Storm Australian Severe Weather Forum

Severe Weather Discussion => Australian Severe Storms, Weather Events and Storm Chasing => Topic started by: Paul D on 22 February 2011, 05:39:04 PM

Title: NE NSW/SE QLD Thunderstorms 20 - 22 February 2011
Post by: Paul D on 22 February 2011, 05:39:04 PM

Few storms around today a SWW for severe thunderstorms was issued for a period earlier this afternoon.
Managed a quick chase to Kilcoy this afternoon.
Couple of pics looking south at the west side of the two cells that poped up infront of the main line just before 3pm
Pics 3.09 to 3-27pm
(http://i979.photobucket.com/albums/ae277/DavJR17/Storms%202011-02/Kilcoysth3-09pmsml.jpg)

(http://i979.photobucket.com/albums/ae277/DavJR17/Storms%202011-02/Kilcoysth3-12pm-1.jpg)

(http://i979.photobucket.com/albums/ae277/DavJR17/Storms%202011-02/Kilcoysth3-18pm.jpg)

(http://i979.photobucket.com/albums/ae277/DavJR17/Storms%202011-02/Kilcoysth3-27pm.jpg)

and an approaching guster back at the coast hinterland later around 4.30pm
(http://i979.photobucket.com/albums/ae277/DavJR17/Storms%202011-02/Guster4-38pm.jpg)

Cheers
PaulD

Title: Re: NE NSW/SE QLD Thunderstorms 20 - 22 February 2011
Post by: Michael Bath on 23 February 2011, 09:52:15 AM

Hi Paul and all,

Yesterday (Monday 21st) was quite an active thunderstorm day - considering how INACTIVE the whole season has been.

A few storms developed on the Northern Tablelands later Sunday after that horribly hot day, with activity persisting and spreading into the border ranges during the night and persisting about NE NSW during the am hours.

Some high based cells spread through the Lismore-Casino region late morning 21st. Pretty featureless but some spectacular staccato bolts. This activity seemed to coincide with the first shallow S-SW 'change'. A slightly stronger S-SE wind developed by early afternoon. This brought the usual stratocumulus here but helped get things going across SEQ where the environment was primed. The more substantial S-SE change with gusty winds did not arrive until sunset, but was also accompanied by more storms in NE-NSW. Some features and lightning were visible but not the best. Bit of a strange change really.

The rainfall totals across the greater Brisbane area from the storms were impressive.

Title: Re: NE NSW/SE QLD Thunderstorms 20 - 22 February 2011
Post by: Paul D on 23 February 2011, 04:04:28 PM

Short timelapse of yesterdays sequence

2011 Feb 21 Kilcoy Sth storm timelapse (http://www.youtube.com/watch?v=gSi5e9kj4V0#ws)

Missing one short section prob the best..
note to self, don't miss red flashing battery light next time...

PD

Title: Re: NE NSW/SE QLD Thunderstorms 20 - 22 February 2011
Post by: Paul D on 23 February 2011, 06:46:28 PM

Zoomed in shot of what appears to be a 2nd wall cloud developing toward the end of the vid (40sec on)in distance
(http://i979.photobucket.com/albums/ae277/DavJR17/Storms%202011-02/KilcoySth3-272ndwallcloudindistance.jpg)
cheers
PaulD

Title: Re: NE NSW/SE QLD Thunderstorms 20 - 22 February 2011
Post by: Jimmy Deguara on 24 February 2011, 05:08:26 PM

Hi Paul,

Excellent timelapse showing rotation in the early portion of the video - at what speed was it sped up?

I am not sure really that the distant feature is a wall cloud - well it cannot be ruled as one with great confidence. Perhaps use the word possible or ask the question of what others think about the feature.

Regards,

Jimmy Deguara

Title: Re: NE NSW/SE QLD Thunderstorms 20 - 22 February 2011
Post by: Mathew Townsend on 25 February 2011, 04:43:24 AM

Hi Michael

The change in late morning appears fixed prior to the actual SE change in the evening? I never seen something twice in a day? SW change seems more like a dryline?

Title: Re: NE NSW/SE QLD Thunderstorms 20 - 22 February 2011
Post by: Paul D on 25 February 2011, 12:38:01 PM

Hi Jimmy,

I meant to add "possible" on that wall cloud in that last pic, it possibly looked around the right spot for the second larger merging cell down toward Somerset but a bit to far away to for me also to have any confidence, cheers for your thoughts on that one.
The timelapse was app x15 over period of 20min but missing a 4min segment, foot still hurting from kicking myself over that one..
evolved from pic 2 in top post to pic 3 in the missing 4min and had a couple of interesting lowering's which I wanted to check the motion of on film, but alas, next time..

Cheers
Paul