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Outdoor concert in Wisconsin briefly halted as storms pass through

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Heavy rain and some thunderstorms moved through southeastern Minnesota and western Wisconsin Sunday evening, prompting the organizers of an outdoor concert in Somerset, Wisconsin, to suspend the show for about an hour.

Concert staff told the 15,000 or so attendees to seek shelter in their vehicles until the weather passed, according to the Star Tribune.

Only light rain fell, and after about an hour the crowd was allowed back in to the concert grounds.

The band of rain and storms is expected to affect much of southern Minnesota Sunday evening into Monday morning.

Earlier forecasts called for heavy rains which could have resulted in flash flooding. But those expected amounts have been reduced to 1-3 inches from Sunday evening through early Monday morning.

The National Weather Service cancelled a flash flood watch that had been issued for the Twin Cities metro area, according to MPR News meteorologist Paul Huttner.

Showers soaked parts of western Minnesota Sunday morning, and the rain redeveloped in the afternoon, spreading across the region ahead of a cold front that's slowly moving east across the southern half of the state, the National Weather Service says.

Cooler air expected this week

After a hot and humid weekend, Minnesota will start to cool off Sunday behind the bout of wet weather, and that cooler air is expected to stick around for much of the next week.

The high for Sunday is expected to be in the mid-80s in the south, and slightly cooler – in the mid-70s – in northern Minnesota, the National Weather Service says.

A cooler air mass behind the front will give Minnesotans a break from the rain Monday, but the chance for another bout of wet weather returns Tuesday. Showers could linger until Thursday, when the storm system is expected to move out of the area, the weather service says.

Temperatures are also expected to stay cooler this week, with highs in the mid-70s Monday, and cooling down to the low 70s and upper 60s on Tuesday. (See map above.)

Minnesota's mini heat wave

The mini-heat wave began on Friday, when hot and humid weather moved in over the region, bringing with it the high heat indexes.

Friday night, it was still 85 degrees in the Twin Cities at 10 p.m., and the heat index at that time was still at 90 degrees, the National Weather Service tweeted.

We haven’t had all that many days of 90 degrees or more this summer. But several cities in the area broke that mark for high temperatures this week.

The high temp at Minneapolis-St. Paul International airport was 91 degrees on Saturday, and 94 on Friday. In St. Cloud, it was 87 on Saturday and 91 on Friday, MPR News' Updraft blog notes.

And if you look outside, you may notice your grass is greener than a typical August, Paul Douglas wrote on the Star Tribune's weather blog. Since June 1 – the start of meteorological summer – the Twin Cities is 2-3 inches wetter and 1 degree warmer than average.

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