The National Weather Service Milwaukee/Sullivan Weather Forecast Office’s 8 p.m. update indicates that “The greatest severe weather risk is becoming focused across west central and northern Wisconsin this evening, as a line of thunderstorms advances eastward from Minnesota and northern Iowa. Strong winds, a few brief tornadoes, and large hail will be possible with these storms. 

This line is expected to expand southward, but it’s unclear how far south that development will take place. Overall, the higher probabilities for thunderstorms and any severe weather will be along and north of I-94/US 18, mainly after midnight. Uncertainty remains above average with this severe weather event.

The overall severe weather risk for southern Wisconsin has decreased but still continues.  Forecast confidence remains below average for this event.”

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