Storm Australian Severe Weather Forum

Severe Weather Discussion => Australian Severe Storms, Weather Events and Storm Chasing => Topic started by: David C on 18 September 2008, 05:53:49 AM

Title: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: David C on 18 September 2008, 05:53:49 AM
GFS going for a 2nd consecutive weekend of severe weather across the east. Once again we could see some very solid flow through through the mid levels, along with some strong early-season instability.

It will be interesting to see how Friday pans out in SEQLD. As of now, GFS is clearly favouring quite rich boundary layer moisture with dewpoints in the mid-high teens finding their way south in time for Saturday afternoon. The disparity between GFS and LAPS is still evident for Friday but not as great as the previous weekend. Far from a sure thing, but it will be worth watching.

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: nmoir on 19 September 2008, 03:41:31 AM

   looks like narrabri is the hot spot for sat arvo. last i saw was saying cape over 2000 .
wish i could be there.

nick
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jimmy Deguara on 19 September 2008, 06:18:20 AM
Hi guys,

It seems the models can't seem to make up their mind on positioning but I am not as enthused by the prospects of spenidng hard earned dollars for a northern NSW intercept. Sure there will be severe storms likely but the distance just does not add up to the value one would hope for. I have wedding stuff to do so I am a little biased though haha!! At least for those wanting to chase a few onsecutive days, this is one way to see the countryside.

I will reassess Saturday morning.

Regards,

Jimmy Deguara
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Thomas on 20 September 2008, 12:04:50 AM
I think things are looking pretty good for storms over the next couple of days. It is quite encouraging to see 16-18 C dp's sitting north of Gympie. Even west of the ranges moisture is not too bad with 14 C dp's around Moree and Miles. As long as moisture doesn't mix out with we should be looking pretty good, moisture wise, despite the NW winds forecast on Saturday. On Saturday, mid and upper level winds look quite nice, however, the W to NW surface winds will not be doing any favors. Forecast sounding currently show a pretty strong cap on Saturday morning over the NW slopes. It should break easily enough though with strong heating during the day. If were to pick somewhere now I would have to say around Moree since moisture should be there. Mid-level winds are stronger to the south but with the NW surface wind I feel this will only mean storms will move faster. Storm mode I would say will be multicelluar possibly developing into a squall line later as outflow boundaries merge. Another area of interest may be the border ranges, directional shear should be better due to N'ly surface winds, also it appears lower level moisture should be adequate there.

Michael
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Rodney Wallbridge on 20 September 2008, 12:24:40 AM
Gyday everyone, GFS shows a slight offset convergence on the Richmond Range 1hrs drive west of here this arvo. I am a bit put off by the lack of sfc windspeed.Mid level winds look quite nice today to push it over closer to the coast where hopefully a better feed will be waiting.On past occasions where by high Li's and median Cape and really only Orographic trigger is certain.... a stronger sfc wind might be needed. An increase of these winds produced by strong updrafts will keep these cells alive today.
I'll be out and about after work.... hope the storms wait for me :)
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Steven on 20 September 2008, 02:54:37 AM
I'm almost drooling over the -8 LI and 2600 CAPE on the 18z 4PM run for Saturday, if that's anything to go by, very good instability!

Not sure about our chances here locally however... Maybe Sunday onwards?

Steven
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 20 September 2008, 06:15:53 AM
Hi all,
I hope we manage to get in the firing line out this way this time lol.

It's currently sitting at 30c now (12:00pm) and looks to be a fair bit of mid level moisture with the sky looking almost white with moisture haze. Some cumulus seem to be appearing just now to our north. If I were to hedge a bet here, I'd say we were just a little too far west for action but anything is possible :) Looks like this trough line has started up near Thargomindah (QLD) so it's slightly possible that we may get something come down over the border near us if the trough hangs around long enough into this afternoon/evening. It seems to pretty rapid moving but it is pretty widespread to the SW of QLD and dipping into the far W of NSW near Tibooburra, from current satellite obs.

Cheers guys, take care if chasing today!
Shauno
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 20 September 2008, 12:01:30 PM
The main cell over SE QLD (Kilkoy) this afternoon has been exhibiting a very interesting Doppler wind return for several frames now. Quite a decent mesocyclone on that storm - though we are looking a couple of ks above the surface that far from Staplyton radar.

EDIT - updated warning - large hail reported:

Issued at 6:00 pm Friday, 19 September 2008.

The Bureau of Meteorology warns that, at 6:00 pm, severe thunderstorms were detected on weather radar near Kilcoy and Mount Kilcoy. These thunderstorms are moving towards the northeast. They are forecast to affect the area north of Woodford by 6:30 pm and Conondale by 7:00 pm.

Damaging winds, very heavy rainfall, flash flooding and large hailstones are likely.

Thunderstorms today have already produced damaging wind gusts, large hail, and rainfall of 28mm in 5 minutes at Kilcoy.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Carlos E on 20 September 2008, 12:12:22 PM
28mm in 5 minutes. Wow. >_<

That's like all my July/August rain in 5 minutes.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Steven on 20 September 2008, 12:44:16 PM
Thanks for that Michael, no doubt there was severe conditions under that cell, it was black for almost an hour on radar.

I was beginning to worry whether it would come over or not, but it has dissipated.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: nzstorm on 20 September 2008, 11:36:52 PM
Greetings,
Good to see some decent CAPE being plotted by the GFS so early in the season.  Will watch todays instability with interest.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Thomas on 21 September 2008, 12:11:51 AM
That was a decent storm in SE Qld, quite decent structure. EL was pretty low yesterday so the storm wouldn't of had much height but it still packed quite a punch. Anyway, for today, I feel dp's are not going to be as high as GFS has them west of the ranges. Lower level moisture really took a beating yesterday out there with the dp getting down to 6 C. In fact the 12Z Moree sounding was looking very dry. Overnight, dp's have recovered though I don't see them getting past 15C in a hurry. I guess the 0Z sounding should be good in determining the moisture depth out there. With 30/15 CAPE should be more than sufficient. East of the ranges in SE Qld I have absolutely no concerns about moisture and with the cooling aloft I feel pretty confident in saying CAPE should be quite decent. I think CAPE could approach 2000 j/kg, maybe greater locally. Just wish the mid level winds were a tad stronger. Good luck to those heading out.

Michael
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jimmy Deguara on 21 September 2008, 12:22:43 AM
My feelings reiterated Michael.

I doubt even the dew points west of the ranges would 'be' in the mid teens. I think mixing will occur and the dew points will drop. I have decided not to head out. Good luck to those on the north coast and for those who chase in Queensland. I think this is a NE NSW day for chasing.

I will be investigating what may have happened with GFS this year - that's two weekends and two events it has stuffed up - not that this has not occurred in the past.

Regards,

Jimmy Deguara
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: shanesmp on 21 September 2008, 08:32:55 AM
Appreciate your opinion guys. I'll be heading up to Armidale (As base) for tomorrow and monday. I am hoping for a further moisture increase from 14c DP's to about 16, but looks good regardless. Monday has some rather impressive shear and some turning on the plains. Hoping for a big one!

*A very excited Shane* :)
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Carlos E on 21 September 2008, 09:37:46 AM
An impressive storm on the Grafton radar just a little west of Casino in N-NSW atm.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 21 September 2008, 09:52:26 AM
Hi guys,
Surely something large and severe must spring up around the N-NE NSW, S QLD area over the coming days? ;)
There is currently a large storm cell near Boomi NSW that is very active on the radar and seems severe (well into the red/black at the core) this looks to be following the line that's pushing up into S QLD. So I hope someone is out there covering the action! It looks pretty good on the LT so far!

I noticed the first ever SEVERE? logo on the OzForecast.com site for our area tomorrow. I'll be ready and waiting.

Temps are really up here today. Currently just nudging over 35c, still with a lot of mid/low level white moisture haze. The northerly wind does still feel a bit dry but moisture from E QLD must be feeding down into the storms just enough to drive them.

Take care if chasing!
Shauno
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Thomas on 21 September 2008, 10:19:17 AM
Sea breeze front pushing through Amberley is very obvious-

20/03:30pm     28.7         18.5          6.5     ENE          15     19     1013.8     
20/03:00pm    30.0       17.4        8.0    NE        11    16    1014.0    
20/02:30pm    30.6       13.8       10.1    NNW        8    12    1014.3    
20/02:00pm    30.3        14.5       9.6    NNW       6    12    1014.7    

That's a 4C increase in dp and large wind shift. It seems to be the reason that storm near Harrisville quickly got its act together.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Carlos E on 21 September 2008, 10:43:30 AM
I notice they now have the "This thunderstorm is very dangerous" out for that storm as well. It's as black as the ace of spades.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 21 September 2008, 11:38:50 AM
Hi all,

Is that large storm North of Lismore currently, (5:31pm) a possible HP supercell? It looks enormous on the vissat with a nice overshooting top and forward shearing anvil! Not to mention it is very active on LT!

What an afternoon for the NE! I very much wish I were there chasing with you all! :D (I'm staring out my window looking at, now clear, blue skies lol)

The line in SE QLD is still firing and should continue for some time if things hold up. Seems the major 4 or 5 frontline storms spread down the SE QLD and NE NSW coast are the largest from current observations.

I'm expecting some exciting reports and photos to be coming in soon! ;)

Take care,
Shauno
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Mike on 21 September 2008, 12:46:19 PM
Watching the radar and forum comments with interest guys.  Hope those chasing stay safe but get some photos. Nice Doppler wind flow agreed MB - wow!  What great storms they are.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jimmy Deguara on 21 September 2008, 01:04:20 PM
Hi guys,

It seems like a supercell to me and that is the Bureau's way of warning for a dangerous storm.

Michael called in with hail reports - I will let him pass on the information:)

Regards,

Jimmy Deguara

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Rodney Wallbridge on 21 September 2008, 01:12:25 PM
Gyday all, here are two pics from the cell that passed over Kyogle. Michael Bath and Jason were out there earlier and  report ground covered in Hail. Look forward to seeing the pics and report.The cell consolidated just to the south of Kyogle on radar.Some lovely Mammatus spotted and some nice scud cloud in places.
(http://www.australiasevereweather.com/rodney/20080920rwa.jpg)

(http://www.australiasevereweather.com/rodney/20080920rwb.jpg)
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Steven on 21 September 2008, 01:24:37 PM
Brilliant shots Rodney, not bad at all for early spring instability. :)

We're still awaiting our turn, I can't spot any lightning yet, though my hopes have been boosted by further development to the west of the main activity. Can't wait.

Edit: Now I can ha ha.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 21 September 2008, 02:05:08 PM
Chased with Jason Pato this afternoon. There was barely a cloud in the sky until after 2pm.

Fairly high based storms developed - I guess they formed above the 900-850 cap evident of the Brisbane sounding this morning.

Early cell south of Casino.

(http://australiasevereweather.com/temp/forum/thumbs/2008092001.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092001.jpg)

This was the one that passed very close to Casino and was NW of the storm in the first photo. The microburst was quite impressive though had weakened by the time it hit us. We still copped pea sized hail with some 1cm stones.

(http://australiasevereweather.com/temp/forum/thumbs/2008092002.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092002.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008092003.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092003.jpg)

This is the development of the hailstorm that went on to pass right over Kyogle. Again it was fairly high based. There was lots of great lightning to be seen south of the storm, but the prospect of getting into some more hail was too much for me !

(http://australiasevereweather.com/temp/forum/thumbs/2008092004.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092004.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008092005.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092005.jpg)

So we went into it. On the south side of Kyogle there was a lot of 1 to 1.5cm hail and very heavy rain and some brief bursts of violent winds.

(http://australiasevereweather.com/temp/forum/thumbs/2008092006.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092006.jpg)

After about 15 mins of it hailing it started to get bigger - into the 2-3cm range then with some 4cm stones. The sound on the car was awesome!

(http://australiasevereweather.com/temp/forum/thumbs/2008092007.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092007.jpg)

When it finally cleared we noticed some of the hills just W-NW of Kyogle has become white!  This area had a massive cover of hail mostly in the 2 to 4cm range with some measured at 4.5cm. It was an amazing scene.

(http://australiasevereweather.com/temp/forum/thumbs/2008092008.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092008.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008092009.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092009.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008092010.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092010.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008092011.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092011.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008092012.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092012.jpg)

Jase will put up some more pics shortly

Michael

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Steven on 21 September 2008, 02:08:09 PM
Interesting to see how the first line fizzles only for the second line directly behind it to intensify. It is heading straight for my location, you can tell.

Fantastic shots MB, that hail is pretty big.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 21 September 2008, 02:17:46 PM
These VIS satpic need to be shown - pretty ideal situation.

The two supercells are visible at 4.30pm - one over Kyogle and the other Harrisville/Amberley:


(http://australiasevereweather.com/storm_news/2008/satpics/200809200430.jpg) 2.30pm

(http://australiasevereweather.com/storm_news/2008/satpics/200809200530.jpg) 3.30pm

(http://australiasevereweather.com/storm_news/2008/satpics/200809200630.jpg) 4.30pm

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jason(pato) on 21 September 2008, 02:37:43 PM
Gday Everyone,

Well what an extraordinary afternoon, the duration of that hailstorm over Kyogle was amazing. Heres a few pics to add to what MB has posted.

Microburst

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3014.jpg)

Developing Anvil of the Kyogle storm

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3021.jpg)

Just caught the tailend of this CG, you can just make it out on the left of frame

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3027.jpg)

Near whiteout conditions

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3035.jpg)




Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jason(pato) on 21 September 2008, 02:42:24 PM
Heres a couple more of the hail in the surrounds of Kyogle.


(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3052.jpg)

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3054.jpg)

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3060.jpg)

Certainly an enjoyable arvo with MB.

Cheers Jason
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Thomas on 21 September 2008, 03:36:20 PM
Awesome photos there, great work! I have to agree, Kyogle storm appears very much like a supercell. Here's the radar loop of the for the Kyogle and Harrisville storms-

---> Brisbane radar loop (http://australiasevereweather.com/storm_news/2008/radar/20080920/mt_stapylton128.htm)

I would like to see the doppler images, did these indicate a mesocyclone on these storms? Having look at the observations and plotting them on forecast soundings it appears as in there was high CAPE. Lismore got to 30/19 which plotting on a forecast sounding give a surface based LI and CAPE of -8 and 3000, respectively. Amberley got to around 28/18 giving roughly a surface based LI of -6 and CAPE of nearly 2000. Plenty of energy there. I would have to say that I think the sea breaze front played a huge role in todays storms. After the sea breeze front moved through Amberley, winds where 15 knots from the ENE, gusting to 19 knots. Given the weak mid level winds this was needed to get 0-6 km shear around the 40 knot mark for better storm organisation. The sea breeze front was accompanied by a pretty large surge in moisture which would of increased CAPE substantially. All in all, things really came together today, looking froward to seeing more photos, I love the hail there Jason, superb.

I think later I will post my thoughts on tomorrow, which I think at this stage is looking as good, if not better, than today.

Michael
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 21 September 2008, 03:52:52 PM
You might wish to look at these photos by AC - not sure where they were taken but it's the storm near Harrisville/Amberley:

http://www.downunderchase.com/stormchasing/08-09/190908/20-09-08-01.jpg
http://www.downunderchase.com/stormchasing/08-09/190908/20-09-08-02.jpg

Some beautiful structure there !

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jimmy Deguara on 21 September 2008, 04:18:03 PM
Anthony's is certainly supercellular from what I can gather with striated structure. Bloody great! Looks LP in structure with hail likely closer to the photographer extreme left of the photograph.

Regards,

Jimmy Deguara
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: David C on 21 September 2008, 06:03:55 PM
Very nice hail dump Michael and rainfoot. 

That storm Anthony photographed is exceptionally nice, visually -- definitely a NSW looking storm! ;)
The first picture looks as though the storm had just encountered the boundary and is spectacular form - like a spinning top! Quite interesting that there is some dry air entrainment and no visible precipitation in the first picture, yet the base looks quite low too.

The second picture reveals that the downdraft is winning out but still nice nonetheless.

The 2008/2009 storm season has arrived!
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Thomas on 21 September 2008, 10:45:02 PM
Agreed, those are amazing photos. One day I would like to frame a photo of Australian supercell, I think the first one would be a a good candidate.

Well I don't have much to add. Again I think the dp's forecast by GFS west of the ranges are unrealistically high. This, is beginning to be a real problem. My real interest today is therefore in SE Qld. There should some SE change of sorts sitting around the border. With a sea breeze front we could end up with a triple point which may be the focus point for some strong convection. 500 mbar winds are around 25 to 30 knots which is a tad stronger than yesterday. Although you could hardly fly a kite around 700 mbar with winds only around 5 knot. Anyway, with strong NE or E surface winds (like yesterday) shear should be just enough for serious storms. 500 mbar temps are forecast to be a couple of degrees cooler than yesterday so assuming we get similar surface conditions as yesterday we should see surface based LIs and CAPEs of around -8 and 2500, respectively. With the overnight convection it appears the lower levels have really taken a beating. There's is a few too many 14 C dp's in SE Qld for my liking. Hopefully, deeper, quality moisture is sitting just off shore and during the day we can get some additional moistening of the low levels from evaporation. Would really like to be seeing a few 18C dp's by midday. If so, we'll be set for another big day I would say.

Michael
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: nzstorm on 21 September 2008, 11:02:12 PM
Impressive photos there.   I was amazed by the pic by Anthony Cornelius given the wind profile didn't look great for supercells.  But an upper level jet and a surface boundary is enough I guess.   

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Anthony Cornelius on 21 September 2008, 11:49:33 PM
Thanks for the comments guys.

One must always becareful when just looking at the images and then making an analysis (especially just 2 images!)  What the photos don't show is the massive rain and hail curtain just to the left of the storm.  In fact, on the first image we were receiving 1-2cm hail at the time (albeit hail falling from the overhang of the updraft).  The separation between the updraft and downdraft of the storm was incredible - something I've not personally seen before in Australia.  If you see radar, you can see the main downdraft, and then the very large notch/hook of which the meso is sitting in.  Towards the end it lots its shape, and then a larger black call develops just south of Marburg which I suspect was the storm letting go (and tending more HP).

This particular supercell was most likely a classic, going to a HP towards the end and dying.

Shear was certainly strong enough for supercells (25-30 knot SW @ 500mb, and a 20-25 knot NE at the surface thanks to the seabreeze), but I do agree I didn't think that the structure would be quite like that!

The inflow was particularly impressive, even when the main rain/hail core was just 1-2km away, the inflow was solid.  At times, inflow gusted close to 30knots with small twigs and branches being broken off trees.  For a short time, a small part of the meso was rapidly rotating but it didn't do anything further - I noticed Doppler had a small 70-80km/h in and outbound at the time side by side when this occured.

AC
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jimmy Deguara on 22 September 2008, 12:30:56 AM
Anthony,

By definition, if there is little or no rain falling from the updraft, the storm is more on the LP scale of the supercell spectrum. Perhaps it was tending towards classic and HP as the rain would have dumped through. How long did this structure last? Do you have some timelapse you can upload? Now you suggested there was a separation of the rain from the structure which I pointed out in my post earlier.

But anyway, perhaps you can supply a few more images and video as suggested.

Regards,

Jimmy Deguara
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Anthony Cornelius on 22 September 2008, 12:58:07 AM
Hi Jimmy,

As you know - storms first, and other stuff later - I have all week to upload photos!  Just trying to get work done so I can hopefully chase this afternoon - you know how it is :)  I also have to buy another mobile as mine died.  I suspect it got wet because it was sitting in the side door of my car, and when it started hailing some hail got in there and melted and made a small puddle of water.  Oh well!

Unfortunately I don't have enough time (or webspace) to upload video - but will definately be showing the timelapse at the next ASWA meeting in Brisbane on October 25 for those interested.

AC
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 22 September 2008, 04:47:52 AM
There was also a funnel on the first storm yesterday. It only lasted a minute or so. The photos below show where it was in relation to the rest of the storm. The view is from halfway between Kyogle and Casino looking towards the south between 3.27 and 3.28pm,

(http://australiasevereweather.com/temp/forum/photos/2008092013.jpg)

(http://australiasevereweather.com/temp/forum/photos/2008092014.jpg)

(http://australiasevereweather.com/temp/forum/photos/2008092015.jpg)

(http://australiasevereweather.com/temp/forum/photos/2008092016.jpg)



More of the Brisbane supercell pics can be seen here (http://forum.weatherzone.com.au/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=17;t=000455;p=5).

MB
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 22 September 2008, 04:49:00 AM
Hi all,
WOW! What an amazing chase report and stunning photos to top off a great day of spring weather in the eastern parts!

Those supercell shots of AC's are just ridiculous! That SC looks like something straight off the great plains in the US (only in reverse) Looking forward to seeing a little more on that supercell!

MB: That 4-5cm hail is certainly impressive. Did it add any scarring or damage to the cars paint job when you core punched?

Kindest regards,
Shauno

*I wonder whether we'll get another repeat setup of yesterday?



Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 22 September 2008, 04:51:25 AM
Hey Shauno - I can't see any more dents but the car still has all the dents from the Lismore hailstorm last Oct 9, so no way to tell :)

Storms have started up near Moree already.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Steven on 22 September 2008, 05:15:33 AM
And the Moree radar appears to be down...

We did get a bit of lightning and thunder activity last night, but it all fizzled.

What are the chances of activity firing north of Brissie today?
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: enak_12 on 22 September 2008, 07:31:37 AM
Dam impressive storms and photos fellas. I was out n about last night as well. We had an intesnse squall line come over late like 12:30am I took a lot of photos that I'll add soon probably, tonight. Keeping an eye on things today too.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Steven on 22 September 2008, 08:38:20 AM
Some more action in the Northern Rivers this afternoon (as per usual) I'm guessing Michael is out chasing, he's got two options. Either chase the cell SW of Mallanganee, or chase the cell south of the border. Both look pretty severe on radar.

Lightning tracker is buzzing with white dots. :D
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: dann weatherhead on 22 September 2008, 08:58:05 AM
Again congrats on capturing such a mighty storm - certainly a very photogenic beast.
AC commented on the dramatic inflow of the storm - a few NSW chasers were watching this storm together in Sydney via doppler pointing out the large inflow that was being picked up from this storm. Great being able to verify this sort of stuff - field obs & this sort of data.

All sorts of goodness happening again today.

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Carlos E on 22 September 2008, 09:15:50 AM
Amazing pictures. Absolutely amazing.

Again today, as stated, there are some nasty storms on the Grafton and Brisbane (256k) radars!
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Thomas on 22 September 2008, 09:26:44 AM
Quite a localised bit of severe weather going on at the moment. I was a little off in my assessment yesterday, with the triple point sitting further south than I was expecting. Anyway, the storm west of Casino looked like a left mover but has since transitioned into more of a line.To me there it appears as it is starting go into bow echo west of Kyogle. This shows up on the Mt Stapylton radar quite nicely. It also looks like a mesocyclone is being detected on the doppler from that storm on the border. With pretty much nothing to its north, things should remaining interesting this afternoon. I bet that storm is throwing out golfballs like there's no tomorrow, or at least hail over 2cm.

EDIT: The storm moving into Qld now has a hook. Turning into a beast.

Michael
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Carlos E on 22 September 2008, 10:00:43 AM
Queensland have issued the "Dangerous" thunderstorm warning for that massive and very dark cell on top of the border of NSW/QLD.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Thomas on 22 September 2008, 10:02:15 AM
Looks like the two main storms are merging, I expect maybe some weakening will occur with this. Once this is done, hopefully we are left with one storm with nothing to compete with it. Read on wz of 5 cm hail as well. Looking forward photos.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Steven on 22 September 2008, 10:07:53 AM
Very large and powerful storms, I don't recall seeing anything so large and so severe on radar like that!!

Oh and check Michael's webcam, seriously what the hell???

http://australiasevereweather.com/video/webcam.htm
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Carlos E on 22 September 2008, 10:16:12 AM
Haha, yeah I was watching that and thought "hmm, sure this isn't 4 in the morning?".

I can't believe it's gone so dark.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Steven on 22 September 2008, 10:46:45 AM
It's not 4am now, it's 5:30am! Ha ha.

On a more serious note, Beaudesert is in line for a direct hit from that monster. I hope everyone down there is OK!
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Thomas on 22 September 2008, 11:08:51 AM
Still a battle for supremacy out there. Since the first cell merger we have not had what I would saw are 'classic' radar signatures. That said, I am sure these are dangerous storms. The cell west of Beaudesert appears to be the best bet for the next dominant cell. Now, I have a question, I have not got much experience looking at doppler images but I know the generally principles. Just to the SW of Beaudesert on the 6:37UTC image there is a small region of yellow (away from the radar) opposition a larger region of blue (towards the radar). Is this significant?

Michael
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 22 September 2008, 11:27:22 AM
Hi guys,
Oh man what a day on the eastern coast AGAIN! ;)
Looks to be an enormous left moving cell splitting from the main line and headed up towards the Ipswich area. No doubt severe as hell looking at the radar currently (5:22pm). I haven't seen such a strong left moving storm in ages!!! I hope the guys are out on it, and safe!

Also some very nice looking developing storms between Stanthorpe and Tenterfield so further action is abound for the NE over the next few hours!

What an awesome start to Spring to say the least, mesocyclonic LP & HP supercells, large hail, lightning, the works!!

I'd give my right arm to be over there! :D

Cheers and take care,
Shauno

edit: This definitely needs a current (5:30pm) radar loop and VIS sat image if possible MB! What a gorgeous storm! :D
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Mike on 22 September 2008, 01:13:30 PM
Can anyone give the link for the GIF streamline wind flows?  I'd like to view them.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 22 September 2008, 02:06:21 PM
Had another great storm chase with Jason again this arvo - will sort out those pics in the morning.

But this evening another storm developed and it just went nuts with the number of staccatos!! These were taken from Tregeagle near Lismore about half an hour ago.

All F8, 50mm lens

(http://australiasevereweather.com/temp/forum/photos/2008092101.jpg)

(http://australiasevereweather.com/temp/forum/photos/2008092102.jpg)

(http://australiasevereweather.com/temp/forum/photos/2008092103.jpg)

(http://australiasevereweather.com/temp/forum/photos/2008092104.jpg)

(http://australiasevereweather.com/temp/forum/photos/2008092105.jpg)

It got too close then rained so that was it !

(http://australiasevereweather.com/temp/forum/photos/2008092106.jpg)
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: leo76 on 22 September 2008, 02:36:18 PM
Was so hoping that you were out chasing today Michael. Great shots.

I have a friend out at Kooralbyn and she was saying the clouds were green out there today ... then they got some hail.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Adrian on 22 September 2008, 02:44:37 PM
Fantastic shots Michael !!!!

Thanks for sharing ... starting to pine for our wet ;)


Cheers,
.adrian
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 22 September 2008, 02:52:53 PM
Hi all,
Michael: Those lightning photos are easily the best I've seen in a year or two! (I've seen quite a few in that time)
The first two are amazing. Looks like the last image needed to be stopped down to around f/16-22 & ISO-100 at minimum! Boy they are close CG and staccato to boot!

I'll bet there were a few other stunning photos taken today! I can't wait to see'em :D

Unbelievable!

Kindest regards,
Shauno

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 22 September 2008, 02:58:28 PM
Not sure why the webcams went so dark this arvo - bit weird !!

Shauno - that early evening storm was a gift - I have 20 more great photos not shown here. Jason will be posting his soon too.

Mike - all those streamline ones can be accessed from this page (the links I had bookmarked have changed):

http://www.australianweathernews.com/current_AWN_charts.shtml

Here's today's VIS - how's that overshoot at 4.30pm !!!   I'll do radar loops tomorrow morning.

(http://australiasevereweather.com/storm_news/2008/satpics/200809210330.jpg) 1.30pm

(http://australiasevereweather.com/storm_news/2008/satpics/200809210430.jpg) 2.30pm

(http://australiasevereweather.com/storm_news/2008/satpics/200809210530.jpg) 3.30pm

(http://australiasevereweather.com/storm_news/2008/satpics/200809210630.jpg) 4.30pm

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 22 September 2008, 03:23:17 PM
Here's today's VIS - how's that overshoot at 4.30pm !!!   I'll do radar loops tomorrow morning.

Is it me or does that 4:30pm VIS image of the overshoot look to have some sort of an anti-clockwise spiral rotation? I noticed this at the time while "chair chasing" the storms.

I heard reports on the Ch.7 Brisbane news that they were receiving up to 50mm per half hour (out near Beaudesert) from that HP SC.

Storms are still firing strongly in SE QLD now also. Seemed to be several dozen nice multicells kicking off around the Warrego that are still very active.

MB: From the looks of those photos, I would believe you would have 20 more great ones! Love the ones that are lighting up the surrounding ground around the strike zone! Just stunning :) I'm finding myself staring at the photos in awe lol

Cheers,
Shauno
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: James on 22 September 2008, 03:32:34 PM
MB and Pato ... fworrrr great photos! How good are Prime lenses ... the 50mm are brilliant as seen with your photos MB. Pato I love the rippling cloud base in one of your shots with the two distant CG's. Can I ask where in Tregeagle you took those pictures?
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jason(pato) on 22 September 2008, 03:39:11 PM
Gday Everyone,

As MB mentioned met up again for a chase this arvo. We met at a spot near Casino to observe a cell that was moving in from the NT's. After about 45mins the base came into view so we decided to move further up the road towards Kyogle to try and stay ahead of the monster.

Some nice Mammatus

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3087.jpg)


Decent shelf cloud

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3098.jpg)


After these shots it became apparent that this storm would likely move to near Kyogle. CG's were quite frequent but still behind us. When we arrived in Kyogle the cell looked to move west of town so we decided to travel a bit further up the road towards Wiangaree. By the time we got there the cell was still to the west of our location but some nice structure was observed. It soon got out of our chasing range so we decided to move back towards Kyogle hoping to get out of the rain.

Nice Structure near Wiangaree

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3107.jpg)


Wall of rain advancing toward our location

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3114.jpg)


On the journey back towards Kyogle the rain was quite heavy and we were accompanied by a barrage of close CG's, some slamming down in the paddocks just off the road. Once we cleared the rain we decided to call it quits however distant cells had caught our eye and we wondered if we would get a lightshow later. Did we ever but I'll post pics in another post.


(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3125.jpg)
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jason(pato) on 22 September 2008, 03:46:19 PM
Now for part two. Had only just arrived home from the arvo chase, only to look out the front door to see lightning to the SW. So I quickly stuffed some food down my gob and went out again. Lightning was illuminating the whole sky. Ended up stopping at Parrots Nest to grab some pics of the CG's raining down. I could hardly decide where to point the camera as the stacatto bolts were everywhere. I did stuff up the first few as I had my F stop to low (F4) ended up increasing it to F8 with better results. Enjoy!

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3188.jpg)


(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3209.jpg)


(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3210.jpg)


(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3214.jpg)


(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_3215.jpg)

James my shots are taken from Parrots Nest which is about 7km out of Lismore. I think MB was about 10kms east of me, off the road between Lismore and Woodburn. MB may correct that if Im wrong.

After that last shot I started to get very strong outflow so I decided to pack up and make tracks. Not long after that it began to rain so I called it a night.
It was a perfect way to end an exciting weekend of storm chasing.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Carlos E on 22 September 2008, 03:49:57 PM
Oh my god - those lightning shots Jason and Michael are absolutely incredible!

The best I've ever seen!
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: dann weatherhead on 22 September 2008, 04:03:19 PM
Love the primes too! Great pics MB and Pato! I like the rippled base in particular or Pato's and the third last of MB's one. Stunning!
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Richary on 22 September 2008, 04:07:57 PM
I spent last night camping in the Hunter area before returning to Sydney today. What did we get? It spat a couple of times on me while I was setting up the campfire last night. I miss those Lismore area storms (as a kid lived in Coraki). Hopefully we will get something down here in Sydney tomorrow from the forecast, will be taking the camera to work just in case!

Great photos from you guys up there, some of those strikes are awesome.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Mike on 22 September 2008, 04:23:42 PM
Actually the last image needs a lot of stepping down considering it is so close!  Fantastic stuff Michael and am chuffed you captured some insane lightning.  Would have made your year thus far for sure. :) and superb images also from the other members - really impressive lightning.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: enak_12 on 22 September 2008, 06:59:34 PM
Ok finally had a chance to sort through my shots I had commitments all weekend with friends but managed to race off a few times to take shots. Some of these are a bit rushed but nice enough all the same. Got to love the quality of these September storms!   

September 20 This is the squall line that moved through Coffs late with frequent lightning and a bit of pea sized hail.

(http://i27.photobucket.com/albums/c172/enak12/September%2020%202008/IMG_2119copy.jpg)

(http://i27.photobucket.com/albums/c172/enak12/September%2020%202008/IMG_2109copy.jpg)

(http://i27.photobucket.com/albums/c172/enak12/September%2020%202008/IMG_2128copy.jpg)

(http://i27.photobucket.com/albums/c172/enak12/September%2020%202008/IMG_2139copy.jpg)

(http://i27.photobucket.com/albums/c172/enak12/September%2020%202008/IMG_2130copy.jpg)

(http://i27.photobucket.com/albums/c172/enak12/September%2020%202008/IMG_2161copy.jpg)

(http://i27.photobucket.com/albums/c172/enak12/September%2020%202008/IMG_2169copy.jpg)

September 21

(http://i27.photobucket.com/albums/c172/enak12/September%2021%202008/IMG_2174copy.jpg)

(http://i27.photobucket.com/albums/c172/enak12/September%2021%202008/IMG_2175copy.jpg)

(http://i27.photobucket.com/albums/c172/enak12/September%2021%202008/IMG_2198copy.jpg)

(http://i27.photobucket.com/albums/c172/enak12/September%2021%202008/IMG_2204copy.jpg)

Unfortunately the Jetty is closed for maintenance atm so I couldn't go onto it.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Rodney Wallbridge on 22 September 2008, 07:03:16 PM
Gyday everyone just got home at 1230am after an AWESOME chase. Chaser convergence with Anthony,Jeff,Dave and Julian just north of Rathdowny occured which was quite excitting! Here are a few of my Fav pics.Wowsers at spring so far!!
A better sequence of shots and a report to follow later.
  (http://www.australiasevereweather.com/rodney/20080921rwc.jpg)
  (http://www.australiasevereweather.com/rodney/20080921rwb.jpg)
  (http://www.australiasevereweather.com/rodney/20080921rwa.jpg)
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: nmoir on 23 September 2008, 12:20:21 AM
 I am going to have a go today , GFS has plenty of cape and instability around Narrabri but has proved wayward the last few weeks so i think i will hang closer to the ranges , strong nw winds in 850 make me nervous , i will wait until new data about 930am before i go.
 anyone who wants to meet up i will be on 0407370223
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 23 September 2008, 01:48:19 AM

A couple of other pics from Sunday 21st Sep.

First two near Casino of early development.

(http://australiasevereweather.com/temp/forum/thumbs/2008092107.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092107.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008092108.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092108.jpg)

Then when the storm looked the best halfway between Casino and Kyogle

(http://australiasevereweather.com/temp/forum/thumbs/2008092109.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092109.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008092110.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092110.jpg)

And a nice mammatus sky near Lismore

(http://australiasevereweather.com/temp/forum/thumbs/2008092111.jpg) (http://australiasevereweather.com/temp/forum/photos/2008092111.jpg)


James - the lightning shots were taken near the southern end of Connor Road, Tregeagle (http://maps.google.com.au/maps?f=q&hl=en&geocode=&q=connor+road,+tregeagle,+nsw&sll=-28.859258,153.342533&sspn=0.056454,0.06772&ie=UTF8&ll=-28.859333,153.342447&spn=0.056454,0.06772&z=14) - nice place to live  ;)


Mike - yeah, the last photo is stuffed - just included it to show how close/bright things got at the last min :). Two CGs hit right next to me when I was getting in the car after light rain started - it felt dangerous.


Here's the radar sequences - did anyone save any Doppler images ?

---> Brisbane radar loop (http://australiasevereweather.com/storm_news/2008/radar/20080921/mt_stapylton128.htm)

---> Grafton radar loop (http://australiasevereweather.com/storm_news/2008/radar/20080921/grafton128.htm)

Michael

Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 23 September 2008, 07:28:43 AM
G'day all,

Oh man! What can I say here but WOW! at everyone's images of the impressive storms.

I had an inkling the pictures would be stunning from all, but this is nuts! :D

*I have officially quit now LOL

*not really, only until the next storms arrive! ;)

Quite warm here again today reaching 30c by 10am. We are currently under overcast skies and their seems to be a line of action down below Walgett currently. The state seems to be full of action today so I'm just keeping an eye on the LT and radar.

Regards and take care,
Shauno
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 23 September 2008, 10:25:04 AM
Looks like Narrabri is the place to be currently. The VIS is showing some nice overshooting happening on what seems to be 2 storms, one just about to hit Narrabri now. I can see a few cells from here but they are favoring a SW movement away from us. Still early but I'm watching it closely and will be ready to head out at a moments notice (though I will be on foot which may confine me a little to the town area)

Cheers,
Shauno

5:15pm edit: Just had a cell come across town dropping around 1-2mm in a few minutes with some tiny, matchhead sized hail. I didn't see any lightning as it was only just forming. Seems like a very squally day. Towers are shooting up and forming storms, only to be gone in a matter of minutes.
Title: RE: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Steven on 23 September 2008, 11:16:44 AM
I noticed the trough responsible for the weekend's storms is moving into SE QLD tomorrow, should this increase our chances of further activity? Considering the lack of upper level sheer?
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Macca on 23 September 2008, 04:05:25 PM
Hi all,

Nice chase for me on Saturday. Got off to a slightly late start but had time to sit near the Esk turn-off on the Warrego highway to make a decision...to head north to the Esk/Blackbutt storms or wait to see if the ranges took off down towards Boonah area.  I decided to head N.  This seemed like a great idea at the time as some explosive updrafts went up on the cell between Crows Nest and Esk.  Unfortunately as I got close enough to it, it'd unloaded and the shear was insufficient to keep it going other than a few more weak pulses.

Of course, looking south, the Boonah storm was looking incredible and with it moving due north, all I had to do was head back the way I had come.  I made it to Fernvale with some major drooling over the updrafts on the way before I headed over to Lowood and then up onto the hill just south of town.  Upon reaching the crest, I was greeted with an awesome supercell (which others had been watching for some time).  I watched from atop the hill for about an hour as this cell slowly marched its way northwards.

Eventually I called it quits and headed home just on dark as more storms fired up not far to my north west. 

Great first chase of the season.

Pics on the   2008 Season Gallery  (http://macca.bsch.au.com/gallery2/v/Season+08/) page here...

Macca

(Awesome pics by those others that were out over the weekend too!)
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Richary on 23 September 2008, 04:50:27 PM
Missed out here in Sydney. A few spots of rain mid afternoon and that was it. The wind hasn't gusted anywhere near forecast. All the severe weather warnings had a band to north and south of here with warnings but the gap went over Sydney. Looked like offshore on the south coast might have had some storms as well as a few isolated ones on the north coast near Dorrigo looking at the radar.
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 24 September 2008, 04:41:14 AM
My full sets of photos from the weekend storms in NE NSW are available here:

Sat 20th Sep 2008 (http://australiasevereweather.com/photography/photos/2008/mb20080920.html) | Sun 21st Sep 2008 (http://australiasevereweather.com/photography/photos/2008/mb20080921.html)


Brisbane soundings for the past few days:

(http://australiasevereweather.com/storm_news/2008/thumbs/2008091900brisbane.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008091900brisbane.png)(http://australiasevereweather.com/storm_news/2008/thumbs/2008091912brisbane.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008091912brisbane.png) Brisbane 19th Sep 00z & 12z


(http://australiasevereweather.com/storm_news/2008/thumbs/2008092000brisbane.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008092000brisbane.png)(http://australiasevereweather.com/storm_news/2008/thumbs/2008092012brisbane.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008092012brisbane.png) Brisbane 20th Sep 00z & 12z


(http://australiasevereweather.com/storm_news/2008/thumbs/2008092100brisbane.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008092100brisbane.png)(http://australiasevereweather.com/storm_news/2008/thumbs/2008092112brisbane.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008092112brisbane.png) Brisbane 21st Sep 00z & 12z
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: shanesmp on 24 September 2008, 06:53:56 AM
Thanks to everyone for showing such fabulous pictures. And Michael Bath I want to thank you for taking the time to save and display indepth analysis so often, really appreciate it.

A bit (fairly) dissapointed about the outcome for our chase to NT's on sunday (Although you all know what severe SDS can make you do for a storm). But Phil, Ben and I headed up early on sunday morning to hopefully beat the NT storms (that we knew would develop, but they developed a tad too early). We got to GI about 2pm and saw some unstable looking convection of the sorts to our west, we could have probably made our way into NE NSW, but with no garuntee that we would make the storms (We most likely would have been driving all arvo to get infront of them so we decided not to). So we were hoping something would develop to our west or ontop of us and we would chase it east, but unfortunately... such is life, nothing developed.  :-\ . Unfortunately by this time we had no chance what so ever to get the stuff even in QLD, so we decided to get a motel in GI for the night and hope for something tomorrow. But as I was keeping an eye on radar, we noticed some decent storm/s out near Goondiwindi moving east towards Tenterfield, so we decided to take a drive a bit north (of course after we sat in the local RSL and had some beautiful meals and watched the elderly dance) but unfortunately all seemed too far away for any photos (More like flashes just illuminating the sky). (We were hoping for stuff to develop more to our west). After about 1hr of watching distance lightning we got back to our Motel by about 10pm. At this stage we were all in sleep mode because of our long drive and minimal sleep the night before, but I was so desperate for some storm action I stayed awake for another 2hrs watching the radar. To my suprise stuff went up to our west and let out some bright and powerful but infrequent flashes, too infrequent to photograph and I feel asleep by 12am (I had in the back of my mind that I definitely needed some sleep for the driving tomorrow),only to be woken up by a flang at 1.30am, which was a rather pleasant surprise then another load boom about 2 mins after. These two unfamiliar occurences made me peer out the window for a while hoping that it was becoming more frequent, but to my disappointment we seemed to have received the only two strike in the region within quick succession, back to sleep it was... in hope tomorrow would produce something good.

I woke up about 7am to people next door making loud noises to fellow family members, it was probably about time I got up anyway. Eventually Phil and Ben got up too. by about 7.40am we were all up, and to our annoyance it turns out the close strike that knocked out the power very briefly lastnight fried the modem, so no internet for us... except what we had on Phil's mobile (Which was highly useful). We noticed storms already forming out west and heading for southern part of the plains, so off we set to Narrabri after a quick petrol stop in GI. It was nice to go over Mount Kaputar NP, magnificent views NE and west of the NP, abosutely stunning. As we came over the NP we began to notice decent updrafts to our W and SW, we knew they would be heading SE so we headed for Boggabri, which did give up options east.(although I was wanting to stay out of the cloud and on the NW edge, it made more sense to make our way a bit further south because we did have to get back that night). Just out of boggabri on the road south towards Gunnedah we met a high base guster that had such a lovely and enjoyable cloud feature (Anyone know a name for it?).

(http://i446.photobucket.com/albums/qq183/shanesmp/high_based_guster-1.jpg)

After this we made our way further into Gunnedah and had lunched and watch the storms (which were by then very weak) move over. I knew more would form, but I was hoping they would form soon, and that they did. It start to really perk up with lightning and orange echoes on Moree radar for Narrabri and Boggabri area about 1.50pm so we decided to make our way a bit further north again to have a much better perspective of all the storms, as we did we watched a cell near boggabri take its time but eventually the base began to lower as scud was getting sucked up. We noticed a lowering pop out of the base after rapid up motion from the scud.

(http://i446.photobucket.com/albums/qq183/shanesmp/cropped_lowering_rs-1.jpg)

This base feature then became rainwrapped (or what happened that way from the angle we had) so we decided to go north and then east to get another view of the base. So off we went into and through Boggabri then east on the road towards Manilla. to be greeted by a big rain curtain coming our way with slight green tinge.

(http://i446.photobucket.com/albums/qq183/shanesmp/storm_slightgreen-1.jpg)

Not long after I scored a daytime CG, which I was stoked about.

(http://i446.photobucket.com/albums/qq183/shanesmp/daytime_cg-1.jpg)

We then went a bit further east and then decided to core punch and get through to the other side to see if anything was behind it. We were greeted by very torrential rain (We were on an unsealed road at the time, which was getting quite slushy and slippery) and even some decent hits of hail (I reckon some tinks would have been stones to about 1cm, but most pee or slightly bigger). After this we noticed not much was happening and decided to make our way a bit further south, by this time most of the rain was covering the whole general area, which is great news for that area!

Hope the pictures aren't too big

All in all not the best of chases, but fun to get out nonetheless. I have to admit Sunday was quite disappointing, especially to find a very large HP which hit a couple of hundred km's to our north east, but as I have said to a couple of people, you have to draw the line somewhere otherwise you'll keep going further and further. haha (Which I will probably do on some chases this season when I get back from Canada).

Off to Canada on October 5th and coming back for January, hoping for some big outbreaks in January in NSW. I'll definitely be there haha. (Going to make the most of January and early feb before I begin college).

P.S. Jimmy, I have decided weather is to stay my hobby rather than my job (I need a balance somewhere). Chasing, the best hobby one could have. (I am not sure if you recall MB, yourself and I discussing it in October last year sometime on the NR's). Take care all!

Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: nmoir on 24 September 2008, 07:37:29 AM
 Narrabri and area was too far for me to make so i took a punt on the mid north coast on advice from jimmy and MB , heading for Kempsey where a weak storm developed on the boundary of NNE winds and NW winds , it had good moist inflow but was killed by the nasty nth westerlys in the 850s , still got a few nice bolts and the tele photographer in port macquarie got a nice frame,


heres a few from the day including and early cell at buledelah and the boundary then some lightning from the eventual storm , very little structure
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 24 September 2008, 08:00:03 AM
Hi Shane, thanks for putting together a detailed chase report. Pity the action started up so early on Sunday - so close yet so far!

I do remember that conversation - it was 30th Oct - 2nd page of this thread (http://www.australiasevereweather.com/forum/index.php?topic=596.0)

Monday and today are your more typical September setups - fast moving with marginal moisture in parts, cloud bands and rain in others - certainly a contrast to the weekend situation. Something should spread through here later - hopefully with lightning and not just rain. Moree sounding this morning was quite encouraging.

Nick - sure was a lot of lightning on tracker in the Port Macquarie area well into the evening. Some more there now.
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: shanesmp on 24 September 2008, 09:33:01 AM
No worries Michael. Yes it was a pity.. Although to be completely honest with you, I was thinking that was just 'early convection' that wasnt really going to get going. But Ended up being rather wrong unfortunately. I am far from a fan of chasing early convection, been there and done that in the past and learnt heavy becasue of it. (I love my clear air at 12pm)

Thanks for the link to that thread, even though it was the most average storm you had all of October (And yes it landed on the day I had free and decided to chase haha), I still enjoyed it! Tis all part of learning.

My car is on 290,000km now, hoping it doesnt cark it for this storm season (haha), though it still starts first go etc which I am certainly pleased about. I need it to keep going so I'm going to get some stuff that needs done on it when I get back from Canada (Dec 30th). No immediate issues, just the ones you dont know about and will cause problems down the track.. as they say, better safe than sorry. I love my Toyota Cressida, especially because it is on LPG, get some great mileage out of it for the price I pay.

(Sorry that was a bit off topic, I apologise)

P.S. I am rather looking forward to some chases in the NWSP this season (Well after 30th Dec). Really hoping the season wont end early this year, because i'll definitely have severe SDS when I get back! (No SNOWDS though)
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Harley Pearman on 24 September 2008, 02:41:31 PM
Excellent photos of lightning strikes from everyone and cloud formations.

Out of interest and during this latest weather event, the cold front racing across New South Wales 22/9/2008 triggered a major dust storm from Broken Hill to Mt Kosciusko. I was unable to find sizeable photographs however winds of 117 km / h in Broken Hill caused damage in town but it seems the dust was the big talking point here.

During the dust storm it started to rain and thus the rain fell as mud or wet dust in town.

In Hay wind gusts reached 115 km /h and similar gusts occurred around Griffith.

The dust storm reached Mt Kosciusko and turned the snow an orange colour. This was followed by a dumping of rain and Thredbo recorded 97 mm of rain.

Harley Pearman
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Rodney Wallbridge on 24 September 2008, 03:10:50 PM
On Sunday the Northern Rivers was primed for storms with some nice storm numbers. GFS suggested some better more potent setups not far away. I selected Woodenbong near the QLD border to start from  I had a look at OBS for the Lismore area and saw a very dry Se SFC mass moving in taking Dps down to single figures, which made me decide my original target.
Just south of Woodenbong I snuck around the northern edge of a developing cell and saw some lovely Cgs and nice thunder. Rain free base along a line with the cells affecting the casino area that Michael and Jason were at.I drove through town and sat about 6ks to the west to survey the weather. It became apparent the  cell I drove very close to was proceeding north so headed off through to the border gate and onto Rathdowny. Took a few pics south of town along the Palen creek area .Some great wall cloud structure and rippled RFB areas.
(http://www.australiasevereweather.com/rodney/20080921rwd.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwe.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwf.jpg)

Passing through Rathdowney ,chaser convergence occurred soon after with Anthony , Dave ,Julian and Jeff. We then spent the next while hop skipping one another enjoying the storm which then began to gust out in a huge way! It was observed the cell had too much moisture and became outflow dominant with spectacular photogenic results.
(http://www.australiasevereweather.com/rodney/20080921rwg.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwh.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwi.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwj.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwk.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwp.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwo.jpg)
In the meantime a cell to the NW flank had developed which was 30ks or so away along the line. We then proceeded to drive towards Ipswich and get over to that cell which ended up just going across it north of Ipswich and only just. Heaps of crawlers were seen and two gunshot flangs within 100mtrs in Fernvale north of  Ipswich, after the cell passed overhead with some isolated 1cm hailstones and the village losing power. which made it easier to aim for the sky for lightning. I headed home and encounted an extremely lightning active cell just to the north west of Kyogle which put on an amazing Lightning retina burnage show.Lightning got closer with some amazing stacattos! all images uncropped
(http://www.australiasevereweather.com/rodney/20080921rwn.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwm.jpg)

(http://www.australiasevereweather.com/rodney/20080921rwl.jpg)
548kms travelled  was an enjoyable chase! Home at 1230am.
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Carlos E on 24 September 2008, 03:56:55 PM
Amazing pictures as well Rodney! I'm extremely jealous and amazed at the same time!
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Thomas on 24 September 2008, 07:35:52 PM
I like the photos there, quite good structure. The second photo there looks particularly interesting. Going by the radar I would have to say the storm that formed in NSW and moved northwards towards Rathdowny was the most spectacular of the day. On the radar a not so obvious V-notch is present and on a couple of frames there is also an inflow notch or hook. A guess the second and third are taken during this time. To me it almost look like the is a clear slot on the far right on the second photo (indicative of a RFD). Then there's the lowering almost touching the ground attached to the base. Could you see any upward motion in this lowering? It really looks quite interesting. Certainly outflow dominated the scene afterwards when the two storms collided.

Michael
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Rodney Wallbridge on 25 September 2008, 12:20:14 AM
Gyday Michael, yes the lowering had some nice upmotion. the cell was just cruzing along which enabled me to stay with it thankfully.The road was perfectly aligned to stay just to the NW flank very nicely as well.The amount of moisture this cell was sucking up with anvil and then huge guster it prolly could have done with some decent inflow winds to keep it going before it became outflow dominant would have seen a monster packing a more then fair dinkin punch.
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 25 September 2008, 09:12:49 AM
Thanks for that report Rodney - I very much like the structure in that 2nd photo as well. Glad you were there to capture it ! :)

The Lismore based newspaper, The Northern Star (http://www.northernstar.com.au/storydisplay.cfm?storyid=3785589) had this report about the Kyogle hailstorm event:

Quote
Kyogle hails storm season
September 23, 2008
 
By MEL MCMILLAN

NORTHERN NSW's official thunderstorm season has begun with hailstones 'bigger that golf balls' being reported in western areas of the region during Saturday's storm.

Kyogle SES duty officer Phil Copeland said the worst-hit area was Geneva, west of Kyogle.

"We had lots of broken skylights in Geneva, but no major damage to property," Mr Copeland said.

"The golf club lost a few tiles off its roof and there was some damage to cars."

Kyogle SES attended 11 hailstorm-related jobs at the weekend.

Mr Copeland said Saturday's hailstorm was not a major event, but warned there may be more storms to come and people should use their common sense to stay safe.

"People should stay in their cars if they find themselves in the middle of a hailstorm," he said. "It's better to have a few dings on your car than to put yourself at risk of injury from hailstones."

Hail is often accompanied by wind and strikes at an angle.

"It is important to keep away from windows and doors. People can be at risk of injury from shattering glass," Mr Copeland said.

Bureau of Meteorology severe weather forecaster Michael Logan said the North Coast storm season continued until the end of March.

"September and October, and March and April are the peak periods for storm activity in Northern NSW," he said.

Hailstorms form when humid hot air rises rapidly into the atmosphere.

"The updraught transports water high into the atmosphere which is very cold," Mr Logan said.

"Hailstones form there and when they become too big for the updraught to suspend them, they fall to earth."

The Northern Rivers was one of the few places in Australia likely to experience super cell hailstorms capable of producing 10cm hailstones, Mr Logan said.

The most dramatic recent example of a super cell on the North Coast was last year's October hailstorm, which flung hailstones almost as big as softballs at Lismore and surrounding areas.

Australia's largest reported hailstones were 10cm in diameter. They fell in the Hunter Valley in 1990.
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Mike on 25 September 2008, 09:18:56 AM
Great report and pics Rodney - dramatic images.  A great read from all the reports from everyone and it's even better to see the big grins on all your faces while we are still waiting for our storms!
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: shanesmp on 25 September 2008, 10:48:27 AM
Sensational pictures and report Rodney. Just arranged my flight back from overseas, I'll be leaving Los Angeles on the 30th December to get into Brisbane 7.45am on the 1st then leave Brisbane at 9.15am and get into Sydney at 11.20am. Hoping from some serious storms as I cross the equator.

 
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: JulianR on 26 September 2008, 01:54:41 PM
Hi All!

This is my first time posting on here I think so I will come up with the goods to share with all :)

Last weekend certainly has to be one of the most spectacular chases I have ever experienced in my life - Ever since seeing the Meso Mothership of Dave Ellem's on www.nswstorms.com I have longed to come across one in the flesh, and saturday I just got that .... And still I cannot believe my luck! Full credit to Anthony Cornelius for sticking with this particular cell - certainly paid off dividends in the end!

Anway enough with the ranting, on with the pics - enjoy :)

Saturday 20/09/08

(http://julian.bsch.au.com/pics/200908/200908_005thumb.jpg)

(http://julian.bsch.au.com/pics/200908/200908_012thumb.jpg)

(http://julian.bsch.au.com/pics/200908/200908_030thumb.jpg)

(http://julian.bsch.au.com/pics/200908/200908_042thumb.jpg)

(http://julian.bsch.au.com/pics/200908/200908_051thumb.jpg)

(http://julian.bsch.au.com/pics/200908/200908_073thumb.jpg)

(http://julian.bsch.au.com/pics/200908/200908_091thumb.jpg)

(http://julian.bsch.au.com/pics/200908/200908_104thumb.jpg)

Sundays Images will follow shortly
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Richary on 26 September 2008, 05:14:12 PM
Hey Julian - some awesome structure in those pictures. Exactly where was it you caught those? Never seen one like that myself, though have had mammatus and also some amazing lightning displays years ago when I used to work on the 31st floor of a building opposite Hyde Park in Sydney that had great views.
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Mike on 26 September 2008, 07:38:49 PM
Welcome Julian to the forum and congrats on your first post!  Superb images and I rather enjoyed viewing the screw shape of the supercell in the last few images - just awesome.  Glad to hear you got your first decent supercell - I'm jealous as hell of course.

Look forward to seeing more of you and those images.  Well done and welcome again.
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Jimmy Deguara on 26 September 2008, 11:12:06 PM
Hi guys,

It was easier to wait down this far to congratulate and welcome all those who participated in recent chases. The supercell in particular was absolutely awesome whilst it exhibited the striated appearance.

A couple of good weekends across east Australia.

Regards,

Jimmy Deguara
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: JulianR on 27 September 2008, 02:17:48 AM
Hi Guys,

As promised, the pictures from Sunday, 21/09/08 ... Enjoy :)

Crisp Updrafts starting to shoot upwards as the cell increases in intensity on radar (Rathdowney Area)
(http://julian.bsch.au.com/pics/210908/210908_010thumb.jpg)


Anvil now starting to overshoot - still looking the part on radar at this stage (Rathdowney Area)
(http://julian.bsch.au.com/pics/210908/210908_012thumb.jpg)


Cell now starting to give off some photogenic structure - Angry RFB starting to show its might
(http://julian.bsch.au.com/pics/210908/210908_019thumb.jpg)


At this point, we got a lovely little surprise visit from Rodney Wallbridge - Jeff Higgins was off in the distance somewhere as well
(http://julian.bsch.au.com/pics/210908/210908_037thumb.jpg)


Cell now starting to give off classic HP SC tendancies - beautiful structure in this pic - Outflow was extremely cold here!
(http://julian.bsch.au.com/pics/210908/210908_038thumb.jpg)


I can't get over how magnificent this looked in the flesh - so awesome to experience
(http://julian.bsch.au.com/pics/210908/210908_043thumb.jpg)


(http://julian.bsch.au.com/pics/210908/210908_045thumb.jpg)


(http://julian.bsch.au.com/pics/210908/210908_046thumb.jpg)


Bit of lightning @ Rosewood - As we set up our cameras the lightning became shy :(
(http://julian.bsch.au.com/pics/210908/210908_051thumb.jpg)


For full size images from both chases please goto http://julian.bsch.au.com/pics/200908/ and http://julian.bsch.au.com/pics/210908/

Cheers,

Julian
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: shanesmp on 27 September 2008, 04:59:53 AM
Absolutely superb there Julian. I love no. 6 picture in your first post, perfect textbook SC with meso and wallcloud. Thanks for sharing mate and welcome to the ASW forum :)
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Shaun Galman on 27 September 2008, 05:51:55 AM
Hi guys,

Welcome Julian! I couldn't think of a better way to join up here than with stunning images of a fully fledged supercellular storm's lifecycle! Great Job!

What a weekend to start the season of with :D

I'm still coming back most days to stare at, and study the pictures! As I'm doing again now lol!

What a "monster plow" of a shelf cloud that SC had! Unreal.

MB: All those other lightning images are fantastic! The only hard part now is which ones do you hang on your wall? ;)

Take care,
Shauno
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: JulianR on 27 September 2008, 06:09:03 AM
Hi Guys,

Thanks for all your warm comments - glad you have enjoyed the pictures. Hopefully the season will not shy away & give off some more beauties as we draw closer to the end of spring & start of summer :)

Cheers,

Julian
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: Michael Bath on 27 September 2008, 06:35:42 AM
Hi Julian, thanks for posting those reports and beautiful storm photos! Be great if you contribute over the season ahead :) Certainly off to a great start in NE NSW and SE QLD. 2005 was the previous active September in this part of the world but not to the extent of the events we've had this month !

Off-topic but if you want to see the full report and more pictures of the Mothership Supercell of 30th March 2003 here is my report (http://australiasevereweather.com/storm_news/2003/docs/200303-01.htm). There are stacks of reports in the Storm News section of this website you might like to browse through.

Shauno - yeah - lots of nice ones from that Sunday night !

Regards, Michael
Title: Re: NSW & S Qld Severe Storms: 19-23 September 2008
Post by: David C on 27 September 2008, 11:29:44 AM
All supercells, but that one from a few years back is all high precipitation. This one that Julian and Anthony have provided pictures of is low-precipitation during what I consider the really impressive stage tending to 'classic' later on. In scale it appears a much smaller storm but very impressive structure!  I agree with Shane -- look like a nice wall cloud too!