Storm Australian Severe Weather Forum

Severe Weather Discussion => Australian Severe Storms, Weather Events and Storm Chasing => Topic started by: Michael Bath on 23 December 2008, 12:32:52 PM

Title: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 23 December 2008, 12:32:52 PM
Bit of action over the NW of NSW this afternoon with some very strong gusts reported at Bourke.

From Weatherzone News (http://www.weatherzone.com.au/news/storm-hits-bourke-with-strongest-winds-in-years/10622)


Quote
A severe thunderstorm generated wind gusts of 124km/h at Bourke this afternoon, the strongest recorded anywhere in western New South Wales in three years.

The storm hit at about four o'clock this afternoon and also brought 25 millimetres of rain and caused the temperature to plummet from 36 degrees to 19 in just 20 minutes.

This thunderstorm grew several kilometres into the air where winds were very strong and transferred these winds to the ground in an almighty gust. For about 10 minutes winds gusted more than 90km/h (a strength which can bring down trees and powerlines and cause damage to roofs).

The inch of rain which fell is the highest daily total recorded at the airport in six months and may at least help a little with dam and soil moisture levels. The storm area did not spread much beyond the Bourke area. By 6pm Cobar, Walgett, Wanaaring or Lightning Ridge had not received any rain from today's storms.

On Tuesday the storms area will move a bit further south and east towards to slopes, ranges and coast as the trough deepens and edges east. Some storms may bring more than 20mm and are still a chance to become severe with damaging winds and flash flooding.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Peter J on 23 December 2008, 12:40:18 PM
There has been a few storms to the south of my position in VIC too. Wind gusts here did reach 80kph before settling once the first storm developed - the humidity was unbearable for some time today too. Glad the change is on its way in.

Also large raindrops fell here too, once I normally associated with thundery showers - only 1.4mm in the gauge though.

Big Pete
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Harley Pearman on 23 December 2008, 02:30:34 PM
I have been viewing some early weather models for Friday and Saturday and there seems to be opportunities for thunderstorms over large areas of eastern NSW on both days not too far from Sydney.

The fact that I will be travelling back from Batemans Bay to Sydney on Saturday 27/12/08 may provide opportunities for some chasing. The area around Goulburn to Canberra appears to have some promise for Saturday and if it fires and all goes well, then I will certainly be in that region for any activity.

I have been viewing CAPES as high as 2,000 J/KG but with fluctuations and a Lifted Index as high as Minus 6 on the GFS as at Monday. Assuming the models maintain this for the week and all goes well, then this will provide an opportunity for some chasing and photography in this area.

Harley Pearman
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: James on 23 December 2008, 03:04:20 PM
Tomorrow and Wednesday have the aid of stronger shear however after then it looks like pulse city till the weekend. Having Christmas witht he family in Dorrigo so hoping for some serious action on Wednesday followed by some pulses over the following days.

Another interesting vis sat pic series this afternoon from NW NSW/SW QLD. Some serious outflow boundaries from earlier storms seemed to make a perfect circle of cloudless skies with storms firing on the boundary. Pne storm north of Bourke seems to be heading more north than the others, perhaps interacting with an outflow boundary.

(http://sydneystormchasers.com/files/images/outflow.JPG)
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Richary on 23 December 2008, 04:28:40 PM
Possible storms forecast for Sydney tomorrow and Friday. Fingers crossed.

Tomorrow will be stuck at work for a fair part of the day so chase opportunities will be limited to local. If Friday looks good happy to head out with others though if conditions look particularly good somewhere.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: dann weatherhead on 23 December 2008, 04:52:42 PM
The current satpic is enought to warm the cockles of a storm deprived NSW chaser. Late firing storms lined up throught central NSW has been infrequent of recent. Here's hoping for more :)
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Richary on 24 December 2008, 05:56:24 AM
Nasty looking severe warned storm west of Bega at the moment, building quite nicely on the radar loops.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Ursula on 24 December 2008, 06:59:11 AM
The storm cell is most likely hitting the outskirts of Cooma right now and missing Bega, doesn't look good. I just rang my daughter she is in the firing line in about 2 hours give or take and maybe me a bit 15-20 minutes later, they usually move fast at this time of the day, it is overcast and sticky here, I had some activity a bit earlier NW<N<NW of me, the thunder was very, very loud and things where shaking around the place.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Shaun Galman on 24 December 2008, 07:03:53 AM
Hi guys,
Yesterday's (22nd Dec.) storms at Bourke were fairly decent from what I've heard, particularly in the wind gust department. I heard a radio report from a Bourke local this morning that sounded interesting, he thought he was going to lose his roof! So the stats posted by MB above would be pretty accurate I'd imagine.

We had a nice pulse storm pass us by around 3:30pm yesterday (I didn't get a chance to see this cell on radar) the overshoot was enormous and towered well above the forward shearing anvil. I could not see any lower level structure due to it being (possibly) 30k's to our NW on the bottom edge of the line that went through the Warrego area. I think it blew itself out after an hour or so.

Later on after a rather large orphan anvil from another dying cell to our West cleared away, I could see the cells sitting out to our near Brewarrina at around 8pm. These were anviling to the North of the main updrafts so the upper winds must have been pushing from the south (this is noticeable on the VIS image posted by James) while the storms were traveling E - ESE. These small cells were also overshooting a lot more than I've seen recently? I guess the CAPE would've been very favourable yesterday as it most likely is again today.

Definitely feels more humid out today and we already have a Cu field above. I'm hoping it's primed and ready to fire today, we'll be ready and waiting! :D

Kindest regards,
Shauno  
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Richary on 24 December 2008, 09:02:47 AM
That's a particularly nasty looking left mover just north of Cooma at the moment. Pretty impressive on the satpic as well with the anvil covering a huge distance.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Ursula on 24 December 2008, 09:09:26 AM
Hi,

I agree, but it most likely past Cooma, just about to hit Bredbo and then Michelago will most likely move up the great Divide and join the one W of Yass around Collector/Lake Bathurst (between Goulburn-Braidwood, I think, anybody out there chasing them?

Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Ursula on 24 December 2008, 09:41:25 AM
Hi,

the wind has changed to a strong easterly seabreeze, just now and the mist is rolling in from the coastal ridge, it is quiet cool and not sticky anymore, thunder is on the great divide in the distance, on the radar it looks like the system is splitting.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 24 December 2008, 10:04:29 AM
Been a few stand-out cells this afternoon so far. The Southern Tablelands one which has looked the most impressive on VIS for hours. The Cootamundra to Young cell and continuing.... and the Gunnedah to Barraba cell.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Ursula on 24 December 2008, 10:12:01 AM
I looks like the storms are on their way out, but Captains Flat will get a less severe form of it, it is geting quiet cool here now.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: David Brodrick on 24 December 2008, 11:04:06 AM
From the 4:54 pm STW:

A Tornado was reported earlier this afternoon near Nimmitabel in the Southern Tablelands.
Golf ball sized hail was reported from Manilla, and wind gusts of 91km/hr at Walgett.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Shaun Galman on 24 December 2008, 11:21:13 AM
Hi all,
From the 4:54 pm STW:

A Tornado was reported earlier this afternoon near Nimmitabel in the Southern Tablelands.
Golf ball sized hail was reported from Manilla, and wind gusts of 91km/hr at Walgett.


I can certainly believe that David!
We had a real nasty cell approach around 4pm-ish with a real nice bow shaped RFB on the leading edge, several strong CG and a greenish hue. The onslaught of rain, hail and wind was ridiculous, however it was luckily that it was only short lived (moving East at a fast rate). The hail was furious and we did see stones up to 2cm but I couldn't catch any on camera due to being stuck inside while the rain and hail came down sideways lol. We received 10mm rain in only 4 minutes!

I managed a few good structure photos and a few core shots that I will post when I can. Looks like the evening may still be interesting?
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jason(pato) on 24 December 2008, 12:24:27 PM
Gday All,

I too noticed the report on the tornado and was waiting for a pic to surface. This photo was taken by Heather Leckie:
 
(http://australiasevereweather.com/temp/forum/nimmitabel_tornado_small.jpg) (http://australiasevereweather.com/temp/forum/nimmitabel_tornado_large.jpg)

Cheers Jason


PS - Weatherzone discussion here (http://forum.weatherzone.com.au/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=10;t=002607;p=8) and here (http://forum.weatherzone.com.au/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=17;t=000486;p=5)

Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Harley Pearman on 24 December 2008, 01:47:25 PM
I have been watching that thunderstorm near Cooma for several hours. It appears to be slow moving but long lived especially between the 1 pm to 5 pm period. It has been moving in a NE direction and as I type this, a severe thunderstorm warning has been issued for parts of Canberra (7.30 pm).

I was watching the radar at work as it was passing very close to Nimmitabel and it looked impressive with a core that was in the black range. There was a severe thunderstorm warning on it at 1 pm for damaging winds and large hail centred on and close to the town of Nimmitabel. Other warnings were issued for parts of the south coast including Moruya and Batemans Bay.

Additionally following the southerly change across North west Sydney some thunderstorm activity has broken out affecting Blacktown to Baulkham Hills. It produced a heavy shower and 2 thunderclaps where I live. The raindrops were exceptionally large but no hail.

Another storm cell is observed SSE towards the Parramatta area that has recently intensified and is producing a reasonable shower.

Further small storms have been observed to the NW out towards Richmond and further to the NW.

However following the southerly change, the bulk of this early evening activity is mainly over north west / northern Sydney and or to the north of the metropolitan area.

Harley Pearman
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Richary on 24 December 2008, 01:48:56 PM
That looks pretty impressive! Be interesting to see if someone reports a damage trail.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Ursula on 24 December 2008, 03:01:46 PM
Hi,
I looked at the pic of the Tornado and remembered a similar one a few years ago late on Boxing day, it build up just south of the Captains Flat Radar, moved across the valley not far from here then to the bay and did some damage on the coast and on the race fleet, Sydney to Hobart that is.

It is quiet here now for the last 1/2 hour, it has been a long afternoon, wasn't game to on the PC, there was sheet raining with small hail at one stage and water everywhere, a few lightening strikes. plenty of rumbling, but couldn't make anything out, no visibility, when the sea breeze kicked in this afternoon it was so strong it looked like rain, almost and right into the storms along the ridges (great divide), so there should have been plenty of moisture going up the hills.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 24 December 2008, 04:08:57 PM
That is a pretty impressive tornado - hopefully a lot more pictures will be placed online.

From radar it would appear the tornado occurred between 1 and 2pm just north of Nimmitabel.

---> Canberra 128km radar loop (http://australiasevereweather.com/storm_news/2008/radar/20081222/canberra128.htm)


Quote
SEVERE THUNDERSTORM WARNING
for LARGE HAILSTONES, FLASH FLOODING and DAMAGING WIND
For people in the CENTRAL TABLELANDS, SOUTHERN TABLELANDS, ACT, NORTH WEST SLOPES, NORTH WEST PLAINS, CENTRAL WEST SLOPES, CENTRAL WEST PLAINS and parts of the HUNTER, ILLAWARRA, SOUTH COAST, SOUTH WEST SLOPES and UPPER WESTERN Forecast Districts.

Issued at 4:54 pm Tuesday, 23 December 2008.

Severe thunderstorms are likely to produce large hailstones, very heavy rainfall, flash flooding and damaging winds in the warning area over the next several hours. Locations which may be affected include Tamworth, Orange, Katoomba, Canberra, Goulburn, Cooma, Yass, Moree, Narrabri, Walgett, Dubbo and Parkes.

Destructive winds are possible in parts of the Southern Tablelands.

A Tornado was reported earlier this afternoon near Nimmitabel in the Southern Tablelands.

Golf ball sized hail was reported from Manilla, and wind gusts of 91km/hr at Walgett.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Paul Graham on 24 December 2008, 04:27:14 PM
I was driving from Melbourne to Sydney. I first observed convection iniating on the Victorian ranges from near Wangaratta. Further north, it became clearer there were two main regions of convection: one to the east along the ranges and the other to the west toward the Central West. A flanking line from the storms over the Monaro extended towards Sydney but cells were very sluggish, perhaps due to gravity waves from other strong cells over the Central West. I hope to post some pic's tomorrow.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 24 December 2008, 04:32:31 PM
Hi guys,

That is an impressive cone - quite large too although one cannot see where it exactly was toucing down. Nice catch and in open country! You can just see the RFD and I think the lack of precipitation in this rain-free base region suggests that the RFD could have been rather warm and thence more ideal for tornadogenesis.

Wow!!

Regards,

Jimmy Deguara
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 24 December 2008, 05:26:18 PM
Hi guys,

Ok so there was a tornado down south but quite a few other storms around. I only was able to get to this storm near Bathurst and let go the other one as we had to get back to Sydney this evening.

Here are some of the pictures from that storm between Bathurst and Oberon (right mover):

(http://australiasevereweather.com/photography/thumbs/2008/1223jd06.jpg) (http://australiasevereweather.com/photography/photos/2008/1223jd06.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1223jd08.jpg) (http://australiasevereweather.com/photography/photos/2008/1223jd08.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1223jd17.jpg) (http://australiasevereweather.com/photography/photos/2008/1223jd17.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1223jd18.jpg) (http://australiasevereweather.com/photography/photos/2008/1223jd18.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1223jd21.jpg) (http://australiasevereweather.com/photography/photos/2008/1223jd21.jpg)

Did anyone else get the left mover? I intended to chase it but got drawn in to this one. Could never see the other one and probably it has escaped beyond Bathurst by that time.

This one incidentally produced hail to 2-3cm but only on the eastern parts of Bathurst as I turned south to Oberon.

Links to all images for 23 December 2008 (http://www.australiasevereweather.com/photography/photos/2008/jd20081223.html)

Regards,

Jimmy Deguara
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: shanesmp on 24 December 2008, 05:39:34 PM
Targeted Bathurst today, patience certainly payed off. And Jimmy, as far as I know I got the left mover you're referring to (The storm that went up behind the eastern line of storms). I am extremely tired and desperately need sleep as I am coming down with a cold and still half jetlagged. Will discuss it more tomorrow if I can find some time.

Got some very healthy hail as well. Would have been atleast 6cm, probably 7 before I reached it. Got to it about 40mins after the storm has moved through that region

(http://i446.photobucket.com/albums/qq183/shanesmp/Central%20Tablelands%20-%2023rd%20Dec%202008/meso_rs2.jpg)

Click here for a few more (http://s446.photobucket.com/albums/qq183/shanesmp/Central%20Tablelands%20-%2023rd%20Dec%202008/)



Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 24 December 2008, 05:48:13 PM
Shane,

Very nice indeed! I wished I had gone back to it now! Nice one - and nice hail as well.

Where was that hail reported?

Regards,

Jimmy Deguara
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: shanesmp on 24 December 2008, 05:58:40 PM
Just added a few more pictures. The hail was on Peel RD going north out of Bathurst. It would have been maybe just south of Wiagdon...
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: nzstorm on 24 December 2008, 11:50:51 PM
It would be nice to see a high res. radar image of that tornadic storm yesterday. Upper level dynamics looked good yesterday. Great photos.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: shanesmp on 25 December 2008, 02:51:12 AM
Upon measurement of my hand (I know its a bit dodgy and will carry a ruler next time). But I'd say that stone would have reached about 7cm, so before I got to it, it may have been a more solid 7cm stone.. not sure. (There definitely could have been biggers ones in the paddock which was fenced off).

I really put myself in quite a bit of danger to get some happy snaps of that storm yesterday. I had to run up a hill on the side of a road (Decent sized hill), was exhausted up the top. Got a heap of snaps... Little did I know, the storm was going to throw out sporadic 4-5cm hail stones ahead of the core, I heard them smacking into the grass... then I BOLTED down the hill hoping that none would hit me... (Really dont like that road north of Bathurst for the views). Just for reference, the road south of Bathurst has some great views... I went about 30km down and there were views right down.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 25 December 2008, 03:47:27 AM
Shane - that's risking life and limb for photos :)

Here's some more weather data for the 23rd December including wider area radar showing other significant cells.

(http://australiasevereweather.com/storm_news/2008/thumbs/2008122300wagga.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008122300wagga.png) Wagga 00z


(http://australiasevereweather.com/storm_news/2008/thumbs/2008122304sydney.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008122304sydney.png) Sydney 04z


---> Sydney 256km radar loop (http://australiasevereweather.com/storm_news/2008/radar/20081222/sydney256.htm)


---> Canberra 128km radar loop (http://australiasevereweather.com/storm_news/2008/radar/20081222/canberra128.htm)


---> Canberra 256km radar loop (http://australiasevereweather.com/storm_news/2008/radar/20081222/canberra256.htm)


---> 1km VIS Satellite loop (http://australiasevereweather.com/storm_news/2008/satpics/20081222/satellite_loop_20081222.htm)

Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: shanesmp on 25 December 2008, 06:38:03 AM
The following video is of me on Peel RD doing a u turn to try and out run the storm with golfball hailing falling all round. I apologise for the heavy breathing and hysterics, it just shows how fast I ran up and down the mountain to get pictures of this thing (Also being sick didn't help)... And I was really hoping that tennis balls were not going to drop out and smash my windscreen... Enjoy!

http://au.youtube.com/watch?v=o57p7ycubeI

Risking life and limb is the way I roll Michael :P
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: pingtang on 25 December 2008, 07:15:25 AM
Yesterdays chase was frustrating,especially after looking at Shanes images and the tornado SE of Cooma.

Firstly we saw some CGs near Goulburn early in the day but these were heavily embedded. We continued further north encountering more thundery rain. This thundery rain cleared once we got to Bathurst. We continued a little further west to a good lookout 15kms east of Orange. At this stage we could see strong convection to the SW W and NW. We jumped on the internet in Orange and could see the Young cell on the 256km Sydney loop. We could see the anvil from this stretching well eastwards.We could also see a cell 40k to our north which eventually became the Gulgong supercell. We wanted to intercept this,but theres no road option from Orange to Mudgee

We headed back to our lookout as a storm was developing to our west. This storm looked rather weak but an interesting base area developed on the southern flank but this rapdily decayed. As the storm moved in,a few CGs were oberved and we had a few borderline flangs as the storm moved overhead.We only got some brief moderate rain,before the storm cleared off to the east. The sun came back out,and it felt very humid. Our storm was now 20kms east of us,and it was beginning to strenghten a little with some nice updrafts visable but I didnt bother chasing this as I was still happy with our target area at that time.

Eventually we became impatient,and targted a base area near the town of Blayney(40kms W of Bathurst). This chucked out some CGs and contained some interesting structure at times but it was a little embedded which proved frustrating. This was the early stages of the cell that eventually hit Bathurst. (taken near Blayney)

(http://i411.photobucket.com/albums/pp197/pingtang200/IMG_5339.jpg)

This was before the storm became severe and was only showing small orange echos.It did intensify however as it moved east,but we got caught out as we had to backtrack 5kms west before being able to head east. From there we were always playing catchup. The storm looked interesting at times but being west of the storm is not ideal.

We went home via the Bathurst Crookwell road. We could see a cell flashing every few seconds south of Goulburn but a scud fest ended any hope of a lightshow.

In hindsight,Orange was perhaps a little too west but I think we were also unlunky. We had full sunshine for much of the afternoon,as the anvil junk from the Young storms passed well to our south. It just didnt happen.Frustating but thats chasing for you.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Paul Graham on 25 December 2008, 07:23:25 AM
Here is a panaroma of the Nimmitabel storm with flanking line extending up to the Illawarra, taken from south of Goulburn.  The area of sluggish convection eventually did develop into storm cells in the early evening.  I suspect gravity waves or a lee ridge or combination was holding it back. 
(http://www.skyrama.com/storm_photos/23-12-2008/stormcollageswebcommentary.jpg)
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Shaun Galman on 25 December 2008, 07:28:08 AM
Hi all,

I almost fell off my chair when I saw the photo of the Nimmitabel tornado! (Thanks for sharing it Jason P.) What an unreal left-mover it spawned from! Thanks for the radar images Michael! I hope we get to see a bit more of it.
And great structure in the Bathurst storm! Awesome shots guys! 7cm hail Shane? WOW!

Makes my photos look a little weak lol ;)

Yesterday's little onslaught was great here also! We had a lot of messy HP cells build and push through around lunchtime so we waited it out in the 37ºc temps with 100% humidity! (my favorite conditions!) Several cells were present but were just skirting the town area. One had passed over us at 2pm dropping only 2-3mm briefly. We seemed to be right on the build line come 3:40pm and a beautiful little cell formed only 5k's West of town. It had an amazing little RFB, a nice green hue, several powerful CG, VERY strong outflow winds and even a flanking downdraft notch cutting into the edge at one point!
I have to apologize for the view. I was with friends at the time and the cell was fully formed within 20mins so any photographic viewing preparation was almost non existent.
(http://www.ridgelightning.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=2509&g2_serialNumber=1)
3:43pm

(http://www.ridgelightning.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=2513&g2_serialNumber=2)
Just to the right of the photo above.

(http://www.ridgelightning.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=2516&g2_serialNumber=2)
3:45pm and a cool little notch cutting back in there. There were a few nasty CG emitting from that base at this point!

(http://www.ridgelightning.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=2519&g2_serialNumber=2)
3:47pm and the last photo before the town got core punched. Hail was immediate and we saw stones up to 2cm bouncing everywhere. I couldn't get out to any as they were melting to fast due to the high temps? Visibility would only have been a couple metres also. I sent a text to MB just after this was taken.

(http://www.ridgelightning.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=2522&g2_serialNumber=2)
4:05pm and the cell leaving town and heading East towards Collarenebri. We copped 10mm of rain in 4minutes and there were many trees and branches down around town (including my yard!)

(http://www.ridgelightning.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=2525&g2_serialNumber=2)
4:23pm and the hail (white core) was still reigning down out there to the right and rear of the HP area.

(http://www.ridgelightning.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=2528&g2_serialNumber=2)
Russ (left) and myself waiting in the heat (back to 37ºc again) and watching the rear of the cells. This was taken by my friend Rick up for Christmas from Albury.

As you can see from the times my initial panic for a location went out the window pretty fast but it was good fun! :D  
We had another great little cell form around 7pm-ish which I will post photos of soon.
Cheers,
Shauno
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: leo76 on 25 December 2008, 09:32:18 AM
Quote
SEVERE THUNDERSTORM WARNING
for LARGE HAILSTONES, FLASH FLOODING and DAMAGING WIND

For people in the NORTHERN RIVERS and parts of the MID NORTH COAST, HUNTER, NORTHERN TABLELANDS and CENTRAL TABLELANDS Forecast Districts.

Issued at 2:28 pm Wednesday, 24 December 2008.

Severe thunderstorms are likely to produce large hailstones, very heavy rainfall, flash flooding and damaging winds in the warning area over the next several hours. Locations which may be affected include Lismore, Grafton, Yamba, Maclean, Mudgee and Bathurst.

A particularly severe thunderstorm cell has been detected to the south of Grafton, with data from weather indicating it could produce very large hailstones. This cell is likely to pass very close to Grafton city around or shortly after 3pm.


I can hear some rumbles but can't see anything at the moment.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Ben on 25 December 2008, 10:36:07 AM
Fantastic photos everyone. Shane you scored awesomly with the hail! =D. My chase involved coming from behind that Mudgee cell, trying to push through it with awful driving conditions (crazy rain, wind and hail). I got infront of it shortly but not enough for the entire meso structure until Cassilis, where the storms was beginning to weaken. Photo 2 shows the best of it, but I couldn't fit the entire structure in even with a 3 portrait pano... I hung with Shane at Bathurst for a while but family was expecting me to be home at a reasonable hour so I left Shane at 4ish and saw cells heading towards Mudgee. Got in town to see a rather ordinary looking storm.. booted up wireless. Black on radar? So I took the Cassilis road (after pondering avoiding it through Gulgong where the core passed).. JUST avoided the core though ran through copius amounts of hail and insane wind on the front end but still got pelted by golf balls.. finally pushed myself up towards Cassilis and took a view of near the Feb 7 lookout was.. then noticed I had no fuel.. darted to Cassilis.. bar had some (for $1.76 per litre ugh, no servos!).. but then the storm struck and I was trapped in a shed with the petrol bloke, not filming it tragically, but it was the most insane hailstorm I've experienced. Few rooves blown off in town, windows smashed by hail (windward side), even a window blown out from the wind, would have been over 100km/h, until it settled into hail, LOTS of it. The core passed just west of town, but i think the storm had lost its hailage (sizewize anyway) by this stage. Thats a brief (though may not look it to you  :p ) summary, much of the hail is footage, which I'll do back in Sydney. Here are structure photos anyway.
Photo1: Just out of the storm, almost on me.. It didn't look that impressive, probably as I was not ahead of the storm enough. Shortly after I heard a roar of hail then golfballs started.
 (http://farm4.static.flickr.com/3252/3131591413_72e8f82f3b.jpg?v=0) 
Out of the hail again and trying to get ahead of it. Nice seperation from the microburst and meso.
 (http://farm4.static.flickr.com/3233/3131629887_837beb4bc4.jpg?v=0) 
Finally a fair way ahead of it near Cassilis, showing its full structure. Looks to be weakening
 (http://farm4.static.flickr.com/3113/3132422762_2223c641af.jpg?v=0) 

Photos of the cassilis hail, which was only 2-3cm at MOST (30-40 mins after the storm, nice drifts!) can be found at  http://www.flickr.com/photos/[email protected]/?saved=1
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Dazman on 25 December 2008, 02:34:44 PM
Hi All

Quick intro...

I work in an industry that relies heavily on severe storm events, as such I have been watching this forum for about 3 years but this is my first post and I am very interested in learning more about significant weather events. This is why I have been monitoring for three years (have learnt alot with alot more to go!)

Just wondering if anyone has any information or photos of the tornado that allegedly hit Kyogle this afternoon? I have been told there are photos out there. I have also been told by a reliable source that there are at least five houses that have been demolished by the storm that hit this afternoon.

Thanks for your time

Daz
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: leo76 on 25 December 2008, 03:05:02 PM
Havent heard anything as of yet about a tornado at Kyogle - Michael might be your best bet.

I live up just about Lismore and we had huge amounts of lightening today. One after the other in rapid succession and there were incredibly close. I truly thought the house was going to get hit.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Rodney Wallbridge on 25 December 2008, 03:15:35 PM
Gyday all, just got home in time from the work christmas party with a few nice drinks to be had. Noticed a fairly hefty storm cruising up from the SW which went over part of Lismore this arvo. I saw some of the Kyogle cell while at work haveing some bourbons. Santa was really nice to deliver this. Merry Christmass all!!
PS:I know that some roofs came off at Kyogle and a workmate lost his pump shed... don't know any other info.
 (http://www.australiasevereweather.com/rodney/20081224rwa.jpg)
 (http://www.australiasevereweather.com/rodney/20081224rwb.jpg)
 (http://www.australiasevereweather.com/rodney/20081224rwc.jpg)
Hope the storms stick around for the next week or so :)
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Richary on 25 December 2008, 04:16:45 PM
Nice structure Rodney. Great looking cell.

Had a poke around on the news sites earlier but couldn't find anything about a tornado. Storms dried up in Sydney lately. Even the Friday ones forecast earlier in the week have disappeared off the news weather bulletins.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 25 December 2008, 04:34:35 PM
Hi,

I very much doubt the tornado report but Michael did experience violent winds in the event and downed trees. I will let him say the rest but the photographs from Rodney are certainly an indication on its spectacular nature.

Imelda, Kimberly and I are in the Northern Rivers for Christmas and also for chasing purposes. We chased the southern cell mentioned in the significant warning above for possible very large hailstones north of Dorrigo. It emerged with some spectacular structure but obviously the SE change drifting into the region won out in the end and the storm weakened significantly. I concentrated on structure and also timelapse of this event.

We then headed north for region around Woodburn and watched a cell merger take place. Some interesting structure and definitely green tinge effects in all storms today.

(http://australiasevereweather.com/photography/thumbs/2008/1224jd08.jpg) (http://australiasevereweather.com/photography/photos/2008/1224jd08.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1224jd16.jpg) (http://australiasevereweather.com/photography/photos/2008/1224jd16.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1224jd17.jpg) (http://australiasevereweather.com/photography/photos/2008/1224jd17.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1224jd19.jpg) (http://australiasevereweather.com/photography/photos/2008/1224jd19.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1224jd23.jpg) (http://australiasevereweather.com/photography/photos/2008/1224jd23.jpg)

Woodburn cells and the merger

(http://australiasevereweather.com/photography/thumbs/2008/1224jd38.jpg) (http://australiasevereweather.com/photography/photos/2008/1224jd38.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1224jd39.jpg) (http://australiasevereweather.com/photography/photos/2008/1224jd39.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1224jd47.jpg) (http://australiasevereweather.com/photography/photos/2008/1224jd47.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1224jd48.jpg) (http://australiasevereweather.com/photography/photos/2008/1224jd48.jpg)


All photos for 24 December 2008 (http://australiasevereweather.com/photography/photos/2008/jd20081224.html)

Regards,

Jimmy Deguara
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 25 December 2008, 04:36:56 PM
No tornado visible out there this afternoon and would be surprised if one occurred. Very much straight line winds but geeeeez they were at the top end of what I've seen over the years. Quite unnerving a few ks north of Kyogle when it really hit - I'm guessing 130-140km/h gusts mainly from the S-SE then later from the NE from the RFD - at this point I witnessed a large tree smash across the Summerland Way. It was completely blocked for 15 minutes until some people with 4WDs and winches dragged the branches out of the way.   Lots of tree damage between Kyogle and Wiangaree. And the rain !   wow, torrents.  Fortunately no hail where I was - and just as well as any large stones would have smashed through the car windows.

Apart from the Kyogle supercell, there was a feast of other cells until early evening - some impressive structures, shelf clouds and torrential rain, but far less lightning than the earlier storms.

Met up with Jimmy and family in Lismore afterwards.

A few pics from this arvo.

The Kyogle HP Supercell

(http://australiasevereweather.com/temp/forum/thumbs/2008122401.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122401.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122402.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122402.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122403.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122403.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122404.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122404.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122405.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122405.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122406.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122406.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122407.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122407.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122408.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122408.jpg)

Other shots of later storms taken near Casino.

(http://australiasevereweather.com/temp/forum/thumbs/2008122409.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122409.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122410.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122410.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122411.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122411.jpg)

(http://australiasevereweather.com/temp/forum/thumbs/2008122412.jpg) (http://australiasevereweather.com/temp/forum/photos/2008122412.jpg)


All photos for 24 December 2008 (http://australiasevereweather.com/photography/photos/2008/mb20081224.html)

Michael
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Ben on 25 December 2008, 05:25:18 PM
Awesome photos Michael and Jimmy!!! GO NSW!!! Both storms look nasty, and those winds sound insane Michael. Top picss!
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: LRC78 on 26 December 2008, 03:06:02 AM
Michael I was out with the SES in Kyogle and at a roof job that I was on the occupant showed me panoramic photo's of the storm as it approached his house that were taken on a new you beaut phone. I am no expert but it looked like a tornado and that is how he described it. I asked for copies of the photo but he didnt know how to transfer them but I am going to try again to get some.
Ian L
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 26 December 2008, 03:55:31 AM
Well, they could try attach on here using the additional options below when posting as a member.

Visual verification is one of the most powerful means of identification. Anyway, if it cannot be done - we'll have to suggest that there is insufficient evidence.

Regards,

Jimmy Deguara
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 26 December 2008, 04:09:26 AM
Thanks Ian - be great if you can get hold of those images. Most of the newer phones come with a USB cable to get them onto a PC. There was an amazing amount of turbulence and motion in the clouds - which were almost on the ground.

There were lots of rescue vehicles around after that major event and the other storms. A semi-trailer jack-knifed on the western side of the Leycester Hill on the Lismore Kyogle Road though it was not blocking traffic.

Michael

Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Thomas on 26 December 2008, 05:05:17 AM
That Kyogle storm yesterday was quite impressive, great photos! Would be interesting to see these pictures of the possible tornado. Rotation was very obvious on the doppler and going by the structure, both visually and by radar, I would agree that it was a HP supercell.

Today is also shaping up nicely for SE Qld. Looking at forecast soundings for SE Qld I would have to guess that again there is sufficient shear and CAPE for supercells. I don't quite believe the extremely low LCL's that GFS is forecasting though. Will be interesting to see the Brisbane sounding. Hopefully there is a bit of a cap in place to hold of convection till later. Could see quite high CAPE if this occurs as the 500mbar temps are forecast to drop to around -10/11 this afternoon.

Michael
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Thompson on 26 December 2008, 06:04:27 AM
Great pictures all, and a good move by Jimmy to spend Christmas in the Northern Rivers.

In regards to the Cooma / Nimmitabel cell I am surprised that the Canberra chasers did not head south, it was only 90mins from them. I guess heading south is a psychological barrier.

I myself had targeted Bungonia/Marulan, but when I awoke to popcorn convection I immediately adopted a wait and see mode and in hindsight this was wise as I never put in a single wasted kilometre for what would have ended up with a bust chase (finances did not stretch to an extended chase beyond say Goulburn)

I could post of photo of the brief drizzle we had here in the Illawarra yesterday, but somehow I feel it will not raise too much excitement.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 26 December 2008, 06:27:51 AM
Hi,

"A particularly severe thunderstorm cell has been detected to the south of Grafton, with data from weather indicating it could produce very large hailstones. This cell is likely to pass very close to Grafton city around or shortly after 3pm."

This warning and the special warning from the Queensland Bureau of Meteorology were quite interesting. Michael, have you got that message from the Queensland Bureau about it being a particularly dangerous storm? Both to me indicate supercell status.

Michael T, even if you were from Canberra there was little time to get that tornado as it seemed to develop very early on the storms life. I find that extraordinary as this is something usually a feature in Tornado Alley.

Regards,

Jimmy Deguara
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Steven on 26 December 2008, 10:51:41 AM
Xmas day storms are a bit of a letdown today. Thanks too all that low-mid level junk cloud, it put a lid on development because the temp was too low (26-27 throughout the day). Now that the cloud has begun clearing, is the temp starting to creep back up again but not enough for convective heating. And all those storms to the west? Certainly aren't moving anywhere. I think we have to contend with poor sheer today, sorry to say.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 26 December 2008, 11:19:47 AM
Yep - these are the warnings from the QLD boM for the 24th Dec (times are one hour behind NSW):

Quote
The Bureau of Meteorology warns that, at 2:40 pm, very dangerous thunderstorms were detected on weather radar near the area south of the NSW border. Thunderstorms are moving towards the east to northeast. Very dangerous thunderstorms are forecast to affect the McPherson Range, Springbrook and Little Nerang Dam by 3:40 pm.

and this second one. The associated threat maps had that cell marked as well

Quote
The Bureau of Meteorology warns that, at 3:20 pm, very dangerous thunderstorms were detected on weather radar south of the NSW border. Thunderstorms are moving towards the east to northeast. Very dangerous thunderstorms are forecast to affect the McPherson Range and Springbrook by 3:50 pm, and Coolangatta, Miami and Mudgeeraba by 4:20 pm.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 26 December 2008, 11:59:16 AM
More info about the tornado which was photographed halfway between Cooma and Nimmitabel by Heather Leckie

---> Canberra Times report (http://www.canberratimes.com.au/news/local/news/general/twists-and-turns-on-road-to-canberra/1394600.aspx)

---> Google Maps location (http://maps.google.com.au/maps?f=q&hl=en&geocode=&q=-36.346204%C2%B0+149.208627%C2%B0&ie=UTF8&ll=-36.346319,149.20926&spn=0,359.986095&z=17&g=-36.346204%C2%B0+149.208627%C2%B0&iwloc=addr&layer=c&cbll=-36.346255,149.209193&panoid=dU6HnDvZqfhsL_OnXGDbPg&cbp=12,218.36088919641975,,0,9.522873550190157)

Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Thompson on 26 December 2008, 01:10:53 PM

Michael T, even if you were from Canberra there was little time to get that tornado as it seemed to develop very early on the storms life. I find that extraordinary as this is something usually a feature in Tornado Alley.


Jimmy Deguara

That is true, but the persistence of the black core would have rewarded a Canberra chaser who took off south with something worth pointing the camera at. While I am pretty sure this was probably the only tornado from the storm, the mesocyclone may have been quite visible a couple of hours later still.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 26 December 2008, 06:34:06 PM
Hi guys,

Took my family across the border for their first trip to Queensland today via Boonah and then Warwick. I saw the storm to the south and stuff to the west and north west. I did not like the long drive so opted to the nice looking cell down south near Tenterfield at the time. Obviously I confirmed with Michael Bath as per usual to ensure fuel is not wasted.

As I approached Stanthorpe, Imelda had to control me driving as I began to go crazy at the impending structure! I know for a fact that I missed out on the best and the images below only show a weakening phase. I only need 10 or so minutes and it would have been all fine.

The first two photographs are damage from the Kyogle cell yesterday 24th December 2008:

(http://australiasevereweather.com/photography/thumbs/2008/1225jd05.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd05.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1225jd10.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd10.jpg)

Tenterfield severe storm:

(http://australiasevereweather.com/photography/thumbs/2008/1225jd13.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd13.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1225jd18.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd18.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1225jd20.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd20.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1225jd23.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd23.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1225jd26.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd26.jpg)

Hailstones maximum was near golf ball

(http://australiasevereweather.com/photography/thumbs/2008/1225jd38.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd38.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1225jd43.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd43.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1225jd47.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd47.jpg)

(http://australiasevereweather.com/photography/thumbs/2008/1225jd56.jpg) (http://australiasevereweather.com/photography/photos/2008/1225jd56.jpg)

Strangely enough - Kimberly (at 12 years of age) commented after yesterday's storm that she wanted hail - "we get rain in the Philippines"! So hail she got today and she really enjoyed! It was really a pleasant chase but I can assure you, I went hard at one stage to get into the hail once more and succeeded without knowledge of the region and no maps.

All photos for 25 December 2008 (http://australiasevereweather.com/photography/photos/2008/jd20081225.html)


Regards,

Jimmy Deguara
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 27 December 2008, 04:15:55 AM
This funnel photo was taken by Scott Hills on his phone camera 25th Dec @ 2.33pm. Pic taken looking north from the intersection of Invercauld Road and Ballina Road, Goonellabah.

There was a lot of cumulus about 2-3ks deep from the NE during yesterday.


Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: leo76 on 27 December 2008, 12:09:20 PM
Oh you are joking me!!! I completely ignored my partner when he said, "look at that cloud over there...looks like its rotating"

HUGE forehead slap for me and well done to Scott.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jason(pato) on 28 December 2008, 12:29:29 PM
Gday All,

Sorry for the lateness of this post but this is the first time at the PC since the 24th Dec cause I've been at the in-laws house with limited internet access.

The following pics are of the storm that went over the Lismore region on the 24th December. I couldn't get over the impressive structure. For all its fierce looking nature it only delivered some heavy rain and some gusty winds at our location (near the Channon NW of Lismore).

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_4341.jpg)

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_4345.jpg)

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_4346.jpg)

And a nice double rainbow to finish the show

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_4349.jpg)

Hope you enjoy,

Cheers Jason
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Brad Hannon on 28 December 2008, 05:10:51 PM

(http://i238.photobucket.com/albums/ff315/jaypat75/IMG_4341.jpg)


I totally agree with your comment about the structure Jason.  Congrats on being there to see it in the flesh and despite hills and trees you got some great shots.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Ben on 28 December 2008, 09:35:20 PM
Fantastic photos James and Jimmy!!! I was at Coonabarabran on the 26th. Got a rather decent pulse storm. It looked good, weakened, I left it, got another pulse storm, and then rechased the other one!! It dropped a funnel and much to my surprise gave me 3-4cm hail in the Warrumungles (close to the Mudgee size) - the 800m elevation probably aided the size a bit.
Cropped funnel
    (http://farm4.static.flickr.com/3105/3138568356_21682c8d8e.jpg?v=0) 
Guster passing off to east
    (http://farm4.static.flickr.com/3236/3137745305_e78d446e4b.jpg?v=0)
Hail, using the ruler on hand measurement it was ~4cm this stone, due to it being jagged. Most of the larger ones were around 3cm at most (though round not jagged). 
    (http://farm4.static.flickr.com/3122/3137745483_4e9c93a9ce.jpg?v=0)
Rest of photos can be found at http://www.flickr.com/photos/[email protected]
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Ben on 29 December 2008, 06:07:03 PM
!I finally have gotten time to at least get through footage of the 23rd December Mudgee supercell. Will do a brief report.
Started out day at Bathurst with Shane. Only met up briefly before i decided to go north (mostly cos of needing to be at Dubbo) and him south. Got to Mudgee to see what I thought was an ordinary pulse storm just north of town.. no CG's at all. Booted up wireless to see a black core instead so I was going ***!! Quickly became obvious had to go towards Cassilis to get ahead. Ran into some golf ball size hail after taking this road before finally getting just ahead of it.. Didn't last long before the hail returned!!
Footage of golf ball size hail near Mudgee (1 min 51 sec) BEWARE LOTS OF SWEARING!
 http://www.youtube.com/watch?v=37OqHeHFALk
Got caught in the core again and suddenly hit a crazy cover of hail and nearly slid of the road + strong winds and crazy rain, couldn't see. After a good 15 minutes I finally got out of it and got ahead.. to reveal a nice meso.
   (http://farm4.static.flickr.com/3233/3131629887_837beb4bc4.jpg?v=0)
Pushed self further towards Cassilis again. Low on fuel so headed towards town shortly after snapping more photos of the meso that appeared to be weakening.
   (http://farm4.static.flickr.com/3287/3133339196_2d05dbbee1.jpg?v=0)
got to Cassilis and asked for fuel at the bar as no servos. Before the guy could help me (was getting fuel out of the shed) the storm hit and I was trapped in there without the video camera.. as windows got smashed and blown out in the pub and the shed I was in was unrooved tragically.. Couldnt go outside the hail was coming down with a huge force. It settled down and I could finally get the aftermath.
Video of aftermath + structure in Cassilis (2 min 38 sec)
 http://www.youtube.com/watch?v=JEJhcGx6hLU (more swearing)

All pics here  http://www.flickr.com/photos/[email protected]/

Coonabarabran funnel + hail
http://www.youtube.com/watch?v=hmiiPymjfpA
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: nzstorm on 30 December 2008, 12:01:55 AM
Great hail footage there Ben.  The funnel cloud is possibly a little landspout funnel independent of the mesocyclone.
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Dave Nelson on 30 December 2008, 12:48:18 AM
Hi,

"A particularly severe thunderstorm cell has been detected to the south of Grafton, with data from weather indicating it could produce very large hailstones. This cell is likely to pass very close to Grafton city around or shortly after 3pm."


Regards,

Jimmy Deguara

Hi Gang,
              Back home after 3 days in the NE NSW got home at 11pm and have to work today  :(
   Cindy and I watched and photo'ed that storm as we travelled up the Hwy between Armidale and Glen Innes
It was a pretty mean storm.   Oher storm cells around the area as well tho weren't as wild looking till the one that came
through Glen Innes  and on to Tenterfield later that evening  and as Jimmy also found out it dropped some pretty good
hail

cheers
Dave N
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 30 December 2008, 02:25:38 AM
Hi David,

On what date was the storm you mention occurring? The warning I mention was for the storm south of Grafton heading to Wooli on the 24th December?

The Tenterfield - Stanthorpe storm occurred on the 25th December 2008.

Regards,

Jimmy Deguara
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 30 December 2008, 05:12:34 AM

Weather data for Wednesday 24th December which shows the supercells near Grafton, Kyogle and west of Brisbane.


---> 1km VIS satpic loop (http://australiasevereweather.com/storm_news/2008/satpics/20081223/satellite_loop_20081223.htm)


---> Grafton 128km scale radar loop (http://australiasevereweather.com/storm_news/2008/radar/20081224/grafton128.htm)

---> Grafton 256km scale radar loop (http://australiasevereweather.com/storm_news/2008/radar/20081224/grafton256.htm)


---> Brisbane 128km scale radar loop (http://australiasevereweather.com/storm_news/2008/radar/20081224/mt_stapylton128.htm)

---> Brisbane Doppler radar loop (http://australiasevereweather.com/storm_news/2008/radar/20081224/mt_stapylton_doppler128.htm)

---> Brisbane 256km scale radar loop (http://australiasevereweather.com/storm_news/2008/radar/20081224/mt_stapylton256.htm)


(http://australiasevereweather.com/storm_news/2008/thumbs/2008122400brisbane.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008122400brisbane.png) Brisbane 00z

(http://australiasevereweather.com/storm_news/2008/thumbs/2008122400moree.png) (http://australiasevereweather.com/storm_news/2008/soundings/2008122400moree.png) Moree 00z


Also, further discussion about the tornado between Nimmitabel and Cooma on the 23rd December is here (http://forum.weatherzone.com.au/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=17;t=000486;p=5)


MB
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Mike on 30 December 2008, 07:00:08 AM
Winds are just amazing through the levels.  I just can't grasp how you can have a strong cap and cin with little or no CAPE & LI but get supercells. It's something that I need to get my head around when removing our indices from southern counterpart storms that this proves that you don't necessarily need big numbers to get such severe storms.  I'll have to look through the storm chase reports on the forum and study them!
Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: James on 30 December 2008, 07:39:21 AM
Winds are just amazing through the levels.  I just can't grasp how you can have a strong cap and cin with little or no CAPE & LI but get supercells. It's something that I need to get my head around when removing our indices from southern counterpart storms that this proves that you don't necessarily need big numbers to get such severe storms.  I'll have to look through the storm chase reports on the forum and study them!

Hey Mike,

Those soundings are morning soundings and don't show the true temp/dp. I imagine the temps would have hit the low thirties which when re-plotting on the sounding would give a true indication of the set-up in terms of cap, instability, energy etc.

James

Title: RE: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Dave Nelson on 30 December 2008, 02:53:49 PM
Hi David,
On what date was the storm you mention occurring? The warning I mention was for the storm south of Grafton heading to Wooli on the 24th December?
The Tenterfield - Stanthorpe storm occurred on the 25th December 2008.
Regards,
Jimmy Deguara

Ohhh dear,
                       Sorry Jimmy,   after 2200km in 3 days of  NE NSW driving I am just a little frazzled and not thinking clearly ;D
  I was referring to the 26th Dec,  there was quite a good storm moving nthwards from Dorrigo reg. and on to Grafton
area before it died out.   We watched and photo'ed it as we travelled nthwards between Armidale and Glenn Innes

ciao
Dave N
Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: AaronS on 23 May 2009, 01:49:26 PM
Hi all

New to the forum. Got some photos of damage from the Nimmitabel tornado. Was in the area and forgot the camera but tracked it down and used my mobile. Damage path was over 200 m wide and it was obvious that it was on the ground for more than a km. Either side of that we ran out of trees for it to destroy. Very humbling to be standing among the wreckage of a tornado. Let me know if anyone wants more info.

This tree was nearly two arm span circumference at shoulder height

(http://farm4.static.flickr.com/3410/3552781916_af684f4588.jpg?v=0)

(http://farm4.static.flickr.com/3331/3552781832_eefdbf2df6.jpg?v=0)

(http://farm3.static.flickr.com/2457/3551973165_5a43b3e489.jpg?v=0)

(http://farm4.static.flickr.com/3568/3552781650_22df2e4fc9.jpg?v=0)

(http://farm4.static.flickr.com/3556/3551972987_c3d012312c.jpg?v=0)

Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 24 May 2009, 03:54:17 AM
Aaron,

Just briefly, I don't think I can make any realistic judgements on the evidence provided from what I have seen. I need to know the soil type and if it was dry or moist at the time? Do we have a before or after shot - comparison of similar vegetation nearby? Any buildings? Any embedded objects? Nice tornado and from the structure of the tornado it was certainly looking like a drier tornado and therefore in some form of steady state? Are there other pictures of the tornado? I would think that F2 could have been reached in this tornado. F3??? Unsure - if we are talking violent tornado - brick walls caved in cars and tractors tossed around - not thrown of course, is there any evidence that would lead us to such a conclusion. Remember, the F-scale is a damage scale related to ranges of wind strengths - it's not a tornado intensity scale.
Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: AaronS on 24 May 2009, 05:02:53 AM
A little bit more info. No photos of specifically of neighbouring trees but you can see some in the background of the photos. A definite distinction between damaged an undamaged trees. This is in basalt soils, rocky but deep. It would have been dry for a while so trees could have been weakened. There were very few uprooted trees, most had been snapped. No damage to buildings thankfully though it was only several hundred metres from the Myalla homestead! A telegraph pole has been replaced. Did not notice any embedded objects but then again there was probably nothing to embed in the trees.

Can we compare damage from a tornado to straight line wind damage or does the fact that some of the damage is created by winds coming from the opposite direction confuse things? I have seen plenty of storm damage growing up with trees cracked etc. but what I saw here differed in two ways. 1) I have never seen them snap so far down the trunk and 2) the trees that I have seen break in the past have had a much larger crown so more surface area for wind to catch and cause a fracture. In general neighbouring trees are not particularly tall and have quite a sparse leaf cover. The type of tree you expect to see in a wind blown, dry and cold area.

There may never be an accurate estimate of the power of this thing, but for me personally it was still worthwhile spending an extra hour while I was down that way to track down the damage.

Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 24 May 2009, 11:52:35 AM
Thanks for posting the images Aaron. It's been great to see some follow up to this event. Pity only the one photo of the tornado has surfaced.

Are you able to post the location map please ?

regards, Michael
Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: dazz10 on 06 September 2009, 03:24:16 AM
Hi I am Darren,
I live in Cooma and I seen that cell it just went by Cooma by about 25 km I have video of that storm on my website: http://dazz10.webs.com/ (http://dazz10.webs.com/)

It is only short but you can see the structure of the storm and the cloud dropping down and you can see a bit of a wall cloud right at the start of the video.

I went out to where the photo was taken the next day and you could see where the tornado went through there were a few trees in the fields where there is know trees and fences down but lucky know houses were destroyed but it was so cool anyway thanks all.

Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 06 September 2009, 03:59:26 AM
Hi Darren,
Do you know the times your video was taken ?

http://dazz10.webs.com/apps/videos/videos/view/4526640-start-of-the-tornado-near-cooma (http://dazz10.webs.com/apps/videos/videos/view/4526640-start-of-the-tornado-near-cooma)

MB
Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 06 September 2009, 10:36:59 AM
Thanks for posting.

And exact location please (edit JD)? This storm in your video shows a much wetter portion of the storm.

Regards,

Jimmy Deguara
Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: dazz10 on 07 September 2009, 03:40:22 AM
Hi yes the video was taken at about 1:30-2:00 pm and it was next to monbeaf looking towards nimmitabel. and the first bit of the video was out our front door .there was hail about the size of golf balls. and i had a report of hail filling a dam full of hail .and they said they could just about walk accross the dam and the tornado striped all the leaves off the trees and riped some of them out of the ground. this person does not want to be named but his land is about 15km from cooma on calaminda road near the motor bike track.it would be about 3 to 4km from where the pic was taken on the highway to the north and the video was to the east of cooma ithink from memory the storm started near delgety and headed north towards michalago and the area there are no trees much just grass plains but if i can think of anything else i will let you know.if you stop the video at 39 seconds you can see some thing on the ground.it took me a long time to get the video off the camera i had to use a firewire http://australiasevereweather.com/storm_news/2008/radar/20081222/canberra128.htm (http://australiasevereweather.com/storm_news/2008/radar/20081222/canberra128.htm) here is a link to that storm that day thanks guys.
Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: nmoir on 24 December 2009, 03:30:48 AM
Hi guys , came across what may be a new pic of the nimmitabel tornado in a photo comp , claimed is shot in nsw and the car is driving on our side of road , also looks the same as the other shot.  go to 15th place. also attached

photo copyright William Went

http://www.internationalapertureawards.com/Top50-09.php?CatId=12&Category=Science%20&%20Nature&Award=Open (http://www.internationalapertureawards.com/Top50-09.php?CatId=12&Category=Science%20&%20Nature&Award=Open)
Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Michael Bath on 25 December 2009, 02:47:54 AM
Nice find Nick. No doubt there are other photos of it but sitting uselessly on someone's computer somewhere.
Title: Re: NSW / QLD / VIC Storms (incl Nimmitabel tornado and other supercells): 22-26 Dec 2008
Post by: Jimmy Deguara on 25 December 2009, 09:13:28 AM
Nice contrast and structure shot of the storm and tornado - good find Nick! Can't wait for the rest of the pictures.

Regards,

Jimmy Deguara