Steady to moderate rain has been falling over southern Wisconsin and
northern Illinois Monday evening. These showers have been forming north
of a warm front and low pressure system currently moving into
west-central Illinois. The current cloud cover has kept the warm front
draped across central Illinois and will limit how far it lifts north
Monday night.
As low pressure moves further into Illinois late
Monday evening
widespread showers and thunderstorms are expected to develop, and have
already begun to blossom over parts of Iowa and Illinois. The highest
risk for strong to severe storms will most likely remain south of the
immediate Stateline area, but could come close to parts of Whiteside,
Lee and DeKalb counties. There, storms with gusty winds and heavy
rainfall will be possible.
Further north the greater threat will most likely remain periods of
heavy rainfall through Midnight. The rain coming down now will come to
an end between 6pm and 7pm, but additional showers have already begun to
develop to the southwest and will continue to lift northeast with the
arrival of the low.
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