Topic: QLD & NSW Severe Storms w/ Supercells, Large Hail, Lightning: 12-19 Dec 2010

[Colin Maitland]

It has been some time since I have felt a little excited at the upcoming week. An early look at the models show Thursday and Friday to be the better of the days. Li and Cape is looking not too bad, plus high temps here in SE Qld of 30-31C. There is a lot of moisture that will be dragged back up into the atmosphere up here, unfortunately that means we are in for oppressive weather ,(high temps and high humidity) for the week, but that adds fuel to the storms so we shouldn't complain.

NSW will probably see more action than QLD, but we will take anything after the dismal start to the storm season.

We had some severe cells move over SEQ yesterday, (11/12/2010) that brought flash flooding to many parts of the area.
(Just in time for the SEQ and NE NSW ASWA BBQ, which started a little earlier I heard). Rain and the chance of a storm is still on the cards for the remainder of today.

Col.

[Mathew Townsend]

Col, make the date 12th instead of 13th. Theres a goood rain and storm potential again today!

Yesterday in Ballina was pretty freaky, the squall line formed west of Lismore and exploded on top of us! Winds picked up towards 100km/hr mark exposed in the core. This is strongest wind gust reported for this season! The rain was so beautiful, dropped down quick 40mm under 15minutes! Sadly the airport AWS have been missed a bit of the rain guage.

The roads were flooded with plenty of debris in the inner suburbs of Ballina mainly. Not sure if i heard a fig tree fell down at Cumbalum!?

[Colin Maitland]

Just to add a little excitement into the equation, there is a low that should form off the Fraser Coast over the next day or two but it is not expected to turn into a cyclone.
 
Looking at the earlier GFS runs it showed the potential for storms most of the week and I believe BoM have adjusted the latest forecast in accordance to the models. At 4.15 pm the update for SEQ/Brisbane is:

Tuesday
    Shower or storm.
    Min 21
    Max 28
Wednesday
    Shower or storm.
    Min 21
    Max 30
Thursday
    Shower or storm.
    Min 21
    Max 31
Friday
    Shower or storm.
    Min 22
    Max 32
Saturday
    Shower or storm.
    Min 23
    Max 32

Take care

Col

[Colin Maitland]

STW issued by BoM for Northern Tablelands

For people in the
Northern Tablelands Forecast District.

Issued at 6:15 pm Monday, 13 December 2010.

Severe thunderstorms are likely to produce large hailstones and damaging winds in the warning area over the next several hours. Locations which may be affected include Armidale, Tenterfield, Glen Innes, Tabulam, Jackadgery and Ebor.

[Simon McCombe]

Hi everyone. Have been observing cloud formations towards the east of us here and there is a cell developing about 200 K'ms east,possibly near Stanthorpe or Warwick from us here. Cant remember the name but there is a lot of turreted cumulus developing as well so keep your eyes and ears open. Havnt checked any soundings or the forecasts so cant tell you much more for now.

[Simon McCombe]

UPDATE - More quite explosive cloud developments in a arc from the east around to the south at about 100 to 200 Kms, and looks the same towards the north at about 150 to 300 kms away from my location here. A few little scattered rain patches on Moree radar to the east and around to the south at the moment.   

[Colin Maitland]

Once again NSW is seeing the storm action with another storm warning issued today.


TOP PRIORITY FOR IMMEDIATE BROADCAST

SEVERE THUNDERSTORM WARNING

for LARGE HAILSTONES and DAMAGING WIND

For people in the Northern Tablelands, Northwest Slopes and Plains,
Central Tablelands, and Hunter Districts.

Issued at 3:30 pm Tuesday, 14 December 201

[Colin Maitland]

2 STW current for QLD

SEQ 

For people in the IPSWICH CITY and parts of the BRISBANE CITY, LOCKYER VALLEY, MORETON BAY, SCENIC RIM and SOMERSET Council Areas.

Issued at 4:27 pm Tuesday, 14 December 2010.

The Bureau of Meteorology warns that, at 4:25 pm, severe thunderstorms were detected on weather radar near Rosewood and Amberley.

These thunderstorms are moving towards the north.

They are forecast to affect Marburg by 4:55 pm and Highvale by 5:25 pm.

Very heavy rainfall and flash flooding are likely.


Very hot and humid in Brisbane today.

[Simon McCombe]

Hi everyone. Cloud development here today is building quickly,however not as quick or as early as it was yesterday. Nice cell towards the north of us here,around Moonie area and heading approx. to the NE.  Other smaller rain patches are developing around the Roma/Mitchell area and also south of Narrabri so it may become interesting later. Keep your eyes and ears open and stay safe.

[Colin Maitland]

STW issued for NSW

For people in the
Illawarra and parts of the
Hunter,
Metropolitan and
Central Tablelands Forecast Districts.

Issued at 1:31 pm Wednesday, 15 December 2010.

Severe thunderstorms are likely to produce large hailstones and damaging winds in the warning area over the next several hours. Locations which may be affected include Penrith, Nowra, Bowral and Katoomba.

2 warnings current for QLD

For people in parts of the
GOLD COAST CITY,
GYMPIE,
SUNSHINE COAST and
SCENIC RIM Council Areas.

Issued at 2:18 pm Wednesday, 15 December 2010.

The Bureau of Meteorology warns that, at 2:25 pm, severe thunderstorms were detected on weather radar near the area south of Gympie, Border Ranges National Park, and Goomboorian. These thunderstorms are moving towards the northeast. They are forecast to affect the area east of Gympie, Rathdowney and Kin Kin by 2:55 pm and Toolara, Tin Can Bay, and Inskip Point by 3:25 pm.

2nd warning

For people in parts of the
Wide Bay and Burnett and
Southeast Coast Forecast Districts.

Issued at 2:16 pm Wednesday, 15 December 2010.

Severe thunderstorms are likely to produce damaging winds, very heavy rainfall, flash flooding and large hailstones in the warning area over the next several hours. Locations which may be affected include Gympie, Toolara Forestry and Boonah.

Each day is getting better and the chances of some decent severe weather is getting a bit closer.

Col

[Colin Maitland]

Hi MB, had this quote on WZ, just wondering if you got anything from it? Pretty amazing afternoon up here in Brisbane.

Thunderz Online content
Cloud Gazer

Registered: 29-09-2010
Loc: Greenbank, QLD    
Friends at Jimboomba/North Maclean said it is absolute shambles out that way - golf hail, trees, 120km winds - heading home from CBD to Greenbank now - wish me luck guys

[Colin Maitland]

Very black up here. AC,(as John said in the previous post), and others have reported loads of golf ball size hail too

Current warning:

SEVERE THUNDERSTORM WARNING - SOUTHEAST QUEENSLAND
for DAMAGING WIND, FLASH FLOODING and LARGE HAILSTONES

For people in the BRISBANE CITY, REDLAND and parts of the GOLD COAST CITY, LOGAN CITY, MORETON BAY and SCENIC RIM Council Areas.

Issued at 4:10 pm Wednesday, 15 December 2010.

The Bureau of Meteorology warns that, at 4:10 pm, very dangerous thunderstorms were detected on weather radar near Tamborine and Logan Village. These thunderstorms are moving towards the north. Very dangerous thunderstorms are forecast to affect Beenleigh, Logan City, Ormiston and Camp Hill by 4:40 pm and Cleveland, Redcliffe, Mud Island and Sandgate by 5:10 pm.

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

[scottme]

Quite nasty looking. Another cell forming south of Ipswitch heading towards the CBD.

[Colin Maitland]

Some shots of the storm from the roof of our house. Still trying to learn how to use this Canon, so some of my photos did not turn out that well.

There is all sorts of reports coming over the news some calling it a super cell and one news report stated a " mini tornado" (they will learn one day.) Still early days for reports and damage reviews.

Col

[Michael Thomas]

Nice photos Colin! I will post mine later. Have to resize then upload first.