Australian Severe Weather Forum

Hi David,

I am trying to look through my threads where I suggested what I had chased was right moving:)

In my opinion, depending on the longitudinal position and I guess the time frame, it is most likely the cell moved from the southwest. But I cannot tell due to lack of orientation. If the rotation is as I have it, it was cyclonic - that is if there was storm scale rotation. The cell that is observed further north was a high based smaller cell that remained ahead of the main storm that approached. It may have interacted east of the road but I cannot confirm beyond this point. The cell structured was consistent with a left mvoing HP supercell or a squall line. The structure of the storm to me suggests that the main updraft was on the southern end of the shelf cloud and is where, as you see in the first few pictures in the sequence, where the shelf cloud begins.

As to storm longetivity, I cannot confirm this either. We have pathetic radar coverage, satellite imagery that we cannot decipher properly, and dust covered most of our view until the bases neared say about 10-20km distance from our location. Of course looking upwards the anvil was approaching for a lot longer and is why I never made any move.

I have not had time to look at the timelapse once again.

I know this is puzzling but a great discussion nevertheless.

Regards,

Jimmy Deguara

Hi,

Consider the map below. Barringun is across the border. Our perspective given we are just south of the border, is a WSW view. This is where the storm is in relation to our perspective W to SW at the approximate time of this image.



Other storms are perhaps 50km north at this point. Our storm had to be one that crossed the border from the south side.

I hope that helps.

Regards,

Jimmy Deguara

It's certainly becoming clearer which cells you were observing.  An interactive radar display is now online here:

http://australiasevereweather.com/storm_news/2007/radar/20070102/warrego512.htm

MB

hi all,
interesting and confusing discussion... :D
thanks for getting the 512k radar MB
this image below was taken (phone) at around 06:40UTC (5:39ESDT) ie. 1 frame before radar comes back online....from ~35km SW of Cunnamulla looking Sth...just prior to it all precipitating as a line on radar (06:50frame) as i could see outflow boundaries and RFB's 'filling in' above and to my N-NNW...
Picture here  (copyright)

cheers,

Hi TM,

It is good to see your perspective of what seems to be the northern storm  did you see anything more distant prior to this? Was there raised dust hindering your view? Did you see the earlier high based storm? Also there was a smaller storm that preceded our storm as well? Did you chase with anyone else or was in contact with such?

Let us know what you did on the day and how things unfolded.

Regards,

Jimmy Deguara

Hi everyone , just to confuse evryone more i thought i would add my memories from the period that i missed jimmy and went north to cunnamulla , i will have to check my shots for the times but i think it was around 3:30pm NSW time . there was a smaller weak storm forming slowly about 50 north west of barringun and also a similar looking storm to the north north east of barringun about 60 km , both these storms had small anvils , had not dropped any bolts that i could see and they were in clear air with no anvils or cloud over head and seperate from tha large cloud mass to the east and sth east. far to the northwest approx 40-50 west of cunnamulla was a better looking prospect and i had thought that jimmy may have had a shot at going for that one before i got his message that he was still in barringun. i will go through my shots tonight to see if i shot any of the northern stuff

nick

hi all,

 I guess I was perhaps located on the northern side of what you saw JD and on the southern end of the line to the north.. (perhaps there was a cell in between this and the one Jimmy saw but it was still clearly visible at times)

Some interesting storms and discussion 

cheers,

Hi all,
Sorry for the lateness of this post but I have some photos from the 1st of Jan. and a few from the 2nd (not posted here) but the cells were HP and electrically weak with only a very few actual CG's by the time they reached us here at Lightning Ridge?
The 1st of Jan storms however put on a great show and I thought I'd share a few of the photos with you
 
It started out quite messy, almost looking like a squall line but it was worth the wait  (for an hour or so) as it soon organised and a nice shelf cloud soon developed. This photo above (looking West from an Opal field called the 4Mile) was the only daylight CG I managed but I was very happy with it.



The gust front on this storm was great and seemed to lift the whole Coocoran (dry) lake into the air (above). We headed back into town immediately after this as it started to rain mud and visibility was down to a few meters!


One of the only CG's I managed to capture as the wind gusts and rain were making photography a total nightmare! This was taken in our main street looking SW. I got completely drenched but it was definately worth it!

Cheers guys,
Shauno.