Thunderstorm Developing Over Northeast Illinois And Wisconsin

Thunderstorms are forming directly overhead along a line from the north side of Chicago and O'Hare International Airport northwest toward Madison Wisconsin. A weak cold front is moving south from Wisconsin this evening and overnight.

No Severe Thunderstaorm Warning has been activated as of 4:00 p.m.; however, wind gusts of 50 mph, nickel-size hail, heavy downpours and frequent lighting are possible.

Showers and thunderstorms likely. Widespread haze. Partly sunny, with a high near 85. East wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight Showers and thunderstorms likely, mainly before 8pm. Widespread haze. Mostly cloudy, with a low around 62. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm. Widespread haze before 2pm. Partly sunny, with a high near 77. Northeast wind 5 to 10 mph. Chance of precipitation is 40%.

Tuesday Night Partly cloudy, with a low around 60. North wind 5 to 10 mph.

Wednesday Mostly sunny, with a high near 74. Northeast wind 5 to 10 mph.

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