A front has been pushing across the upper midwest on Sunday. By Sunday evening it was approaching the Stateline, and was generating showers, and some thunderstorms over eastern Iowa. Those storms produced some quarter inch hail just west of the Mississippi River. By the time the precipitation reached northern central Illinois it dissipated into light rain. It will end by 1 am. With relatively cold unstable air aloft, and a continuing southwest upper air flow, showers and thunderstorms will pop on Monday afternoon. They will end quickly as the air stabilizes in the evening. Warmer air will move in under mostly sunny skies on Tuesday boosting temperatures into the middle 70's by late afternoon. A series of systems moving across the midwest from Wednesday through Friday with generate several periods of showers and thunderstorms. Some fairly significant amount of more than 1" may add up by Friday night. Progressively colder air will bring a noticable cooling trend to the area by late week, and into the early part of next weekend.
By Meteorologist
Eric Nefstead
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