Prompts winter weather advisories as cold air moves in Friday night

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Welcome to the last weekend of July in Minnesota. How did that happen exactly? 

Our partly steamy summers at 45 degrees north latitude can be fleeting. And next week’s forecast maps bring a reminder that September is just about five weeks away.

First, we deal with the latest batch of Canadian wildfire smoke in eastern Minnesota. 

Air quality at ground level has been in the unhealthy range Friday for most of eastern Minnesota. Western Minnesota features good to moderate air quality and the region’s air quality alert has been dropped.

Air quality this weekend is expected to be in the good to moderate range across Minnesota as southerly winds blow smoke northward into Canada.

An increasing hot and humid late July air mass returns to Minnesota this weekend. Highs Saturday will climb toward the 90-degree mark once again. Sunday and Monday will feature 90s in the south. You may want to evacuate to the nearest beach this weekend.

An increasingly steamy air mass with dew points in the 70s to around 80 degrees returns to Minnesota this weekend.

On the map below, the National Oceanic and Atmospheric Administration’s Global Forecast System model shows dew points in the 70s pumping back into our region. Dew points will approach Amazon Jungle levels of 80 degrees by Sunday in the south.

Scattered storms will rumble across the far north overnight through Saturday. NOAA’s FV3 model shows the trend:

By Sunday, storms will work from north to south and may reach the Twin Cities by late Sunday evening. A marginal risk for severe storms covers all of Minnesota Sunday.

Monday still looks steamy with highs in the 90s. A much cooler air mass will begin to filter south Tuesday and highs by Wednesday through Friday in the 70s look likely with comfy dew points in the 50s!

With the northerly flow next week we’ll have to watch for additional wildfire smoke episodes.

Weather and Climate News

Updraft® - Minnesota Weather News

Paul Huttner

Author

An increasingly warm and humid air mass returns to Minnesota this weekend. Next week brings a much cooler and less humid air mass to Minnesota.

Steamy weekend ahead; much cooler and less humid next week

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