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Updraft® - Minnesota Weather News
Ron Trenda

Heat advisory; severe storms possible this afternoon and evening

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Most of Minnesota will have summery heat and humidity today. Dew points in the upper 60s to low 70s will be common, with highs topping 90 in many spots:

rt610h2

Much of northern Minnesota will see 80s, with cooler 70s along the north shore of Lake Superior.

Heat index values will be around 100 over most of central and southern Minnesota this afternoon and early evening. The National Weather Service has issued heat advisories for those areas from noon until 9 p.m.:

rt610ht
NWS Twin Cities

It would be a good idea to stay hydrated this afternoon through early evening and avoid strenuous outdoor activities.

Severe thunderstorm risk

The atmosphere will destabilize this afternoon over Minnesota and western Wisconsin, and some thunderstorms are expected this afternoon and this evening. We could see thunderstorms in the Twin Cities anytime from around mid-afternoon into this evening.

Here is the forecast rainfall pattern, today through Sunday morning, from the National Oceanic and Atmospheric Administration’s North American Mesoscale Forecast System:

rt610rad
NOAA/NAM data, via College of DuPage

The Storm Prediction Center of the National Weather Service indicates an enhanced risk of severe weather from east-central Minnesota into western Wisconsin today and tonight. The enhanced risk area includes most of the Twin Cities metro area. Much of the remainder of Minnesota is in the slight risk category:

rt610svr
Storm Prediction Center/National Weather Service

Large hail and damaging thunderstorm winds are the main severe weather threats, but a few tornadoes will also be possible.

Here are the severe weather category definitions:

rt610cat
Storm Prediction Center/National Weather Service

If you are traveling today, stay aware of which county you are in, because warnings are issued by county.

Warm Saturday, cooler Sunday

Dew points should be slightly lower on Saturday, and high temps will be slightly cooler in many spots:

rt611h2

Southern Minnesota will still see highs in the 90s.

Scattered showers and thunderstorms are possible late Saturday.

On Sunday, 80s return to central and southeastern Minnesota, and much of northern Minnesota will have highs in the 70s:

rt612h2

Some 60s are possible in northeastern Minnesota on Sunday.

There is a chance of scattered showers and thunderstorms on Sunday. There will be a good chance of occasional showers and thunderstorms  from Sunday night through Monday.

I hope that you have a good weekend!