National Weather Service United States Department of Commerce

Dangerous Heat in the Central and Southern U.S.; Thunderstorms and Heavy Rain in the Northern Plains

Dangerous, prolonged heat is expected across portions of the Central and Southeast U.S. through July. Scattered severe thunderstorms are expected over parts of the northern Plains into the upper Mississippi Valley Tuesday, with damaging winds and large hail as the primary threats. Heavy rainfall could lead to areas of flooding across the northern Plains, Upper Midwest, Southeast and Southwest. Read More >

Multiple weather systems passed across northern Illinois from Oct 29-31. The rapid succession of these resulted in cold enough air to keep precipitation type mainly as snow for the final system especially on Halloween day. The snow amounts were the most snow on Halloween day on record for long term climate sites in northern Illinois (Chicago and Rockford). Amounts were even in excess of 5" in parts of far northern Illinois. Snow had been mentioned in the forecast as early as six days in advance, and then the message of accumulating snow refined during the week of.  
Snow Photo
Photo courtesy of Andrew Blackford in Valparaiso, IN

 

 

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