Wet Weather Ahead

The Tuesday afternoon web video update is on the server:

http://beta.abc3340.com/weather/video.hrb

I also should note I put some new digital pictures from viewers on our cool pictures page:

http://beta.abc3340.com/weather/coolpics.hrb

Rain is already showing up nicely on our radar over south Alabama, and it will reach us sooner or later. But, at 2:00 the dewpoint in Birmingham is 29, so the rain sure won't be reaching the ground here within the next 3 to 5 hours at least. Light rain should become rather widespread late tonight as a warm front pushes northward from the Gulf.

SEVERE WEATHER? Severe weather potential for north Alabama tomorrow sure looks rather low at this point. Like I wrote here this morning, I just don't see us getting high dewpoints in here so quickly. Yes, we will have periods of rain tomorrow, and probably some thunder and lightning, but the real maritime tropical air needed for severe weather should be confined to south Alabama, especially south of U.S. 84 (Monroeville to Dothan).

Here are our severe weather parameters for midday tomorrow:

SB CAPE 445
Lifted Index -1.4
SWEAT Index 271
2M AGL Dewpoint 60
0 to 3 km Helicity 207
850 mb wind speed 48 kts
500 mb wind speed 61 kts

Those numbers are based on the NAM, and they sure don't look very impressive. I do note the 850 wind speed of 48 kts is pretty decent, but the GFS (the model I used on the video) was more in the 25 to 30 knot range.

Rainfall around one-half inch are likely late tonight and tomorrow. The NAM is showing 0.50", while the GFS shows 0.39". Both models have backed down a bit from earlier rain totals.

REST OF THE WEEK: Nice spring weather is ahead for Wednesday, Thursday, and Friday.

THE WEEKEND: Another storm system to deal with. No doubt a few showers and possibly a thunderstorm will be around n scattered spots on Saturday, but the more organized storms will hold off until Saturday night and Sunday. Good news for NASCAR fans is that the 12Z GFS is a little faster with the system, giving some hope that the main band of storms might be over in time for the big race Sunday. But, no promises this early in the game. It also looks like strong to severe storms will be possible over the weekend. We will continue to fine tune the forecast as we go along.

Thanks to the first graders at Valley Elementary for being such a good audience today! And, thanks for the BIG COOKIE!
Posted by  
on April 25, 2005, 2:00 pm
Wow.. I've been reading NWS discussions from BHM and HSV and what you've just put here... Seems like SPC are the ONLY ones concerned about severe weather. I would love to get into their heads and really understand their thinking. B/c it seems like the chance of severe weather is basically ZERO based on what you guys are saying (and you know Alabama better than SPC)

This stuff is so fascinating to me.

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