Morning Update
* Dewpoints continue to rise quickly across the area. This increase in moisture will aid in thunderstorm development later this evening. Dewpoint at Key Field now up to 58...* Morning sounding from Jackson shows a pretty strong "cap". Still, with enough heating, we should break the cap later this afternoon across northern Mississippi, where the storms will initially form. Then, the storms will track east, while the front moves south.
* NAM continues to show impressive parameters by later this afternoon and especially into the evening hours. These are valid at 6pm today:
CAPE: 1511
Storm Relative Helicity: 162
EHI: 1.4
LI: -6.0
For a rundown of what each of these mean, check out the post directly below this one.
* I sure get the idea that someone is going to see some pretty big hail today. The combination of intense surface heating and very cold temperatures aloft set the stage. Factor in a very low freezing level (so the hail doesn't melt much as it falls), and I wouldn't be surprised to hear about some golf-ball sized hail or larger. The best chance of this will occur along a line from Louisville to Columbus, but we could certainly see some large hail further south as well.
posted by WTOK Weather Staff @ 9:42 AM
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