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re: May 4th Severe Weather Threat Thread (Flash Flood Emergency - Birmingham & Hoover, Ala.)

Posted on 5/4/21 at 4:48 pm to
Posted by Roll Tide Ravens
Birmingham, AL
Member since Nov 2015
42805 posts
Posted on 5/4/21 at 4:48 pm to
quote:

All the rain ------> stable air. Go back to that WPC image I posted on that last page, basically north of the W to E boundary will be instability limited

Yeah, and the earlier storms really worked the atmosphere from Birmingham north. Where I’m at north of Birmingham, my temp and dew point dropped into the lower 60s after those storms. It came back up during the lull, but the atmosphere clearly didn’t recover enough.
Posted by Duke
Twin Lakes, CO
Member since Jan 2008
35641 posts
Posted on 5/4/21 at 5:03 pm to
quote:

Yeah, and the earlier storms really worked the atmosphere from Birmingham north. Where I’m at north of Birmingham, my temp and dew point dropped into the lower 60s after those storms. It came back up during the lull, but the atmosphere clearly didn’t recover enough.


It doesn't look like it can. The high energy air is getting lifted over y'all vs being able to advect in at the surface and reload quickly.

In weather oddities news, I'm watching a flurry and it's 50 degrees outside. I've seen wet bulbing, but this is a little ridiculous. It's evaporating basically on contact with the surface with this 40something% RH.
Posted by Roll Tide Ravens
Birmingham, AL
Member since Nov 2015
42805 posts
Posted on 5/4/21 at 5:08 pm to
Southern half of the line has its act together.
Posted by LegendInMyMind
Member since Apr 2019
54743 posts
Posted on 5/4/21 at 5:29 pm to
quote:

Yeah, and the earlier storms really worked the atmosphere from Birmingham north. Where I’m at north of Birmingham, my temp and dew point dropped into the lower 60s after those storms. It came back up during the lull, but the atmosphere clearly didn’t recover enough.

Last night was the first evening/night we've had in North AL where it felt like storms. This morning, after the first round, it was entirely different. It became evident with the wording from NWSHuntsville and them dropping the Tornado watch way early.
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