Scattered showers and thunderstorms developed late morning Wednesday and
lasted through much of the afternoon, but began to taper off between
4pm and 6pm. There remains quite a temperature spread across northern
Illinois and southern Wisconsin, with temperatures across NW Illinois
warming into the 70s, while areas further east and north stayed in the
50s and low 60s. That difference was all thanks to a very strong warm
front draped from low pressure over Minnesota, stretching down through
Iowa and Illinois.
Thunderstorms were quick to develop over northeast Iowa, stretching east
into southwest Wisconsin and into a slightly more stable air mass.
This line of storms is generally moving east, but also south and further
into southern Wisconsin and northwest Illinois. The intensity of the
storms continues to weaken, but our chance for showers and isolated
thunderstorms will increase between 7pm and 9pm. Severe weather is not
expected, however, heavy downpours will be possible.
The shower and storm chance will last through 1am/2am Thursday morning
with lingering showers expected through the rest of the morning. Skies
will remain mostly cloudy Thursday with highs warming only to the upper
50s and low 60s.
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