Prompts winter weather advisories as cold air moves in Friday night

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Welcome to another steamy summer air mass Minnesota. 

Our latest air mass features temperatures near 90 degrees and dew points in the tropical 70s. That will yield heat index values in the 90s to around 100 degrees especially Friday afternoon. 

 until 8 p.m. Thursday. And a heat advisory kicks in 

 area at noon Friday and runs through 10 p.m. 

Highs Friday afternoon will push 90 degrees in southern Minnesota.

And dew points with our tropical air mass are in the steamy zone. Look at how dew points in the 70s slosh around much of Minnesota through Friday. 

Obviously we’re used to this kind of heat in a Minnesota summer. But just use common weather sense and take it easy out there especially Friday afternoon.

Our heat dome features warm air aloft that is capping our atmosphere and limiting storms coverage overall. But a couple of waves of storms may brew at night from the Dakotas and blow into Minnesota. The first looks likely overnight into Friday morning and may approaches eastern Minnesota and the Twin Cities around 5-7 a.m. Friday.

The second wave looks likely Friday night into early Saturday and could be more robust in the east. NOAA’s NAM 3 km model shows this possible solution but keep in mind summer storm coverage details are notoriously localized. 

The highest severe weather risk zone favors northwest Minnesota into Friday morning.

A cool front will cross Minnesota by Saturday. The air mass behind the front will be slightly cooler and much less humid especially by Sunday.

Highs this weekend will cool into the 80s south and even comfy 70s north. 

And our inbound air mass transfusion will push dew points in the delightful 50s into Minnesota by Monday! 

Weather and Climate News

Updraft® - Minnesota Weather News

Paul Huttner

Author

A steamy tropical air mass will boost heat index values to around 100 degrees Friday afternoon.

Steamy: Heat advisories and spotty storm chances ahead

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