Tuesday, April 19, 2011

It's a tale of two seasons

(11:50:10 AM) nwsbot: DVN: 6 E Galena [Jo Daviess Co, IL] trained spotter reports HAIL of half inch size (E0.50 INCH) at 11:29 AM CDT -- cocorahs report.


(11:30:05 AM) nwsbot: DVN: Galena [Jo Daviess Co, IL] co-op observer reports HAIL of pea size (M0.25 INCH) at 11:29 AM CDT -- lots of pea size hail falling.





10:30 am Update:  Moderate rainfall continues to fall across north-central Illinois and south-central Wisconsin while thunderstorms move south of I-80.  Places like Rockford, Belvidere, Polo, Genoa, Kingston, Forreston, Byron, Janesville and Milton will continue to see the moderate rain.  There is one cell moving into Whiteside county just southeast of Clinton, IA that will likely produce a few rumbles of thunder this morning.


8:00 am Update:  A few light rain showers passed through during the overnight with even a couple light snow showers across southern Wisconsin.  While those continue to move northward another band will lift northeast out of southern Iowa later this morning.  These are forming ahead of a warm front that currently sits through central Illinois and northern Missouri.  A few reports of pea to dime sized hail is falling with some of the stronger storms in southeast Iowa.

This line will likely weaken some as it moves into northern Illinois as it runs into a little more of a stable airmass, but we may continue with our rain/snow mix this morning before changing over to rain showers through the early afternoon.  Wouldn't be surprised if we saw some pea-sized hail or even sleet mixed in. We may see a break in the rainfall before the low the moves into west-central Illinois by this afternoon.  That's when I do expect a few more showers to fire up with severe weather likely through central and southern Illinois.

Further north across Wisconsin, Winter Storm Warnings have been issued as several inches of snow will be likely from places just north of Madison up through Wausau.  As the low passes to the northeast tonight wrap-around showers and maybe even a few snow flakes could be possible but the cooler weather will stay with highs only reaching the middle 40s. - CK

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