Storms arrive after midnight

Showers and thunderstorms have grown to 50,000 feet across South-Central Iowa late this evening and will continue to march eastward through the night.

Because we have a very dry, stable airmass in place with dewpoints in the 30s, storms will weaken as they move across the Mississippi River into Northern Illinois and Southern Wisconsin. However with cold air aloft we could see some dime to nickel sized hail make it to the ground after midnight It’s even conceivable we could get a few storms pulse, producing some isolated quarter-sized hail.  

There will be quite a bit of lightning as rising motion continues overnight. Storms will end by 7am with general rains lingering through noon.

Our Threatrack storm risk remains at level-1.-ES 

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Posted under severe weather, Threatrack

This post was written by qni_it on March 29, 2012

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