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More Storms Sunday

| April 3, 2009 @ 2:46 pm | 2 Replies

**No afternoon Weather Xtreme video today… scroll down for the morning video**

Be sure and scroll down for lots of damage pictures and storm survey info from the NWS in Birmingham. While the clean-up continues from yesterday’s storms, now our attention turns to the event Sunday.

OUR WEEKEND: First off, tomorrow promises to be a beautiful day, with a sunny sky and a high in the mid 70s. Then, Sunday, yet another dynamic storm system will blow in here Sunday. Not as impressive as the one we dealt with yesterday, but still it will bring some risk of strong to severe storms. Here are some severe weather parameters from the NAM for Sunday afternoon:

Surface based CAPE 739 j/kg
Lifted index -5.0
0 to 3 km helicity 453.6
SWEAT index 399.3
850 mb winds 31 knots
500 mb winds 49 knots

Wind fields are marginal, but there should be sufficient instability and shear for the threat of severe thunderstorms Sunday afternoon and Sunday night. SPC has most of the state in a severe weather risk, and it looks scattered storms will fire up Sunday afternoon; those are the ones will have to watch for signs of rotation. Then, a squall line should move through the state during the evening hours. The main window for severe weather seems to be from about 1:00 p.m. until 8:00 p.m. We, of course, will fine tune that risk over the weekend.

FREEZE THREAT NEXT WEEK: The 12Z GFS is printing 28 for Birmingham on Tuesday morning, and 31 on Wednesday morning. These values look good considering the depth of the eastern U.S. upper trough that forms, and of course we all know that valley locations will be colder. Growers will need to prepare for a freeze on both mornings, with Tuesday morning being the coldest, in all probability.

WEATHER BRAINS: Don’t forget you can listen to our weekly 30 minute netcast anytime on the web, or on iTunes. This is the show all about weather featuring many familiar voices, including our meteorologists here at ABC 33/40. You can even listen here on the blog; look for the player on the top left.

TWITTER: Don’t forget, you can follow our news and weather updates from ABC 33/40 on Twitter here. And, my personal Twitter feed is here if you want to keep up with my adventures in life. Twitter is a short messaging service you can receive via the web, cell phone, or IM.

SPECIAL ABC 33/40 NOAA WEATHER RADIO OFFER: You can purchase the WR-100 Midland NOAA Weather Radio, the best selling model in the nation, at any Publix or Handy TV location in this part of Alabama for only $29.95. These receivers have the new digital technology that allows you to choose the counties for which the alarm sounds. Every Alabama home and business needs one!

I enjoyed seeing a big home school group (Crossroads Christian School) this afternoon at Community Presbyterian Church in Moody… be looking for them on the Pepsi KIDCAM today at 5:00 on ABC 33/40 News. My next video will be posted bright and early Monday morning by 7:00… Brian Peters will have the video updates over the weekend!

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About the Author ()

James Spann is one of the most recognized and trusted television meteorologists in the industry. He holds the AMS CCM designation and television seals from the AMS and NWA. He is a past winner of the Broadcast Meteorologist of the Year from both professional organizations.

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