Wintry mix spreads across Minnesota

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Wednesday brings one of the hottest and most humid days of the year to Minnesota. High temperatures will soar into the mid and upper 90s across southern Minnesota Wednesday afternoon. Throw in dew points above 70 degrees and you’ve got heat index values between 105 and 110 degrees across southern Minnesota.

That level of heat index meets the criteria for an 

 from the Twin Cities NWS office Wednesday. 

Short range forecast models suggest a few isolated thunderstorms are possible early Wednesday morning, then a low-pressure system and cool front will sag south through Minnesota Wednesday evening. As it cuts into our steamy tropical air mass, thunderstorms are likely to bloom in the late afternoon and evening hours.

NOAA’s NAM 3 km resolution model develops a line of thunderstorms just north of the Twin Cities eastward into Wisconsin around 6 p.m. Wednesday. The line pushes south through Wednesday night. 

NOAA’s Storm Prediction Center paints an enhanced risk for severe storms from near the Twin Cities southeastward into Wisconsin. Slight and marginal risk zones surround that area. 

It looks like it may be a close call for severe weather in the Twin Cities late Wednesday. Some forecast models keep the bulk of storms just east of the Twin Cities into Wisconsin. We’ll have to watch precisely where storms develop Wednesday afternoon. 

A much more pleasant and comfortable air mass blows into all of Minnesota starting Thursday and lasting through the upcoming weekend.

Weather and Climate News

Updraft® - Minnesota Weather News

Paul Huttner

Author

Wednesday brings one of the hottest (and most humid) days of 2021. Severe storms may erupt late afternoon and evening.

Excessive heat warning and severe risk Wednesday

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