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Unhealthy air quality in northwestern Minnesota; storms possible western Minnesota late Tuesday

Unhealthy air quality in northwestern Minnesota; storms possible western Minnesota late

Tuesday will be a fine summer day just about statewide across Minnesota. Afternoon highs will be mainly from the mid 70s to low 80s, but cooler near Lake Superior. The Twin Cities should warm to about 83 with a light southwest breeze. Dew points will remain quite dry for July.

However, wildfire smoke has returned to northwestern Minnesota. Air quality has become unhealthy for sensitive groups (orange) as of Tuesday morning from around Bemidji up to Roseau.

Air quality as of Tuesday morning
Air quality as of Tuesday morning
Environment Protection Agency

An air quality alert for hazardous levels of fine particulates has been issued for a large area of northwestern Minnesota until 10 p.m. on Tuesday and might be continued beyond that time.

Air quality alert for Tuesday
Air quality alert for Tuesday
Minnesota Pollution Control Agency

Strong storms to develop from the west

Low pressure and its cold front will advance across the Dakotas on Tuesday. Numerous thunderstorms will develop with the heating of the day. Some storms are likely to become severe. A slight (level 2 of 5) risk of severe weather has been posted for much of eastern North Dakota for Tuesday. Some strong storms could leak into western Minnesota late Tuesday evening. A marginal (level 1) risk of severe weather has been extended into the westernmost Minnesota counties for late Tuesday evening.

Severe weather risk for Tuesday
Severe weather risk for Tuesday
NOAA Storm Prediction Center

Storms farther into Minnesota Tuesday night and Wednesday

Scattered showers and storms are likely to track across Minnesota Tuesday night.

By Wednesday morning, the cold front will be approaching western Minnesota.

Forecast weather map for Wednesday
Forecast weather map for Wednesday
NOAA Weather Prediction Centerf

Warm, moist air will get drawn into Minnesota ahead of the front. The Twin Cities should warm into the upper 80s on what will become a muggy Wednesday.

Some storms could become severe in the afternoon or evening in response to the heating. A marginal risk of severe storms has been issued for most of Minnesota for the afternoon and evening hours.

Severe weather risk for Wednesday
Severe weather risk for Wednesday
NOAA Storm Prediction Center

Dry, cooler Thursday

Thursday will be dry, breezy and cooler behind the passing cold front.

The heat returns, especially next week

Temperatures will warm through the weekend.

Next week looks toasty. The Twin Cities are likely to heat up into the low 90s on Monday.

Forecast high temperatures for Monday
Forecast high temperatures for Monday
NOAA Weather Prediction Center