Chance of scattered showers and t-storms Sunday; a warm week ahead

Severe weather update

I’ll start with the dense fog advisory for portions of northeastern Minnesota plus Douglas County of Wis. that continues until noon this Sunday:

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Dense fog advisory until noon today
National Weather Service

The Duluth office of the NWS will have updates on the fog.

More rain at MSP this morning than in the entire month of July!

Our official Twin Cities rainfall is measured at Minneapolis-St. Paul International Airport. MSP airport reported 1.20 inches of rain early Sunday morning:

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Minneapolis St Paul weather data for Sunday morning
National Weather Service

That’s more rain than MSP airport tallied during the entire month of July, which was 0.87 of an inch.

Sunday rain and thunder chances

Scattered showers and thunderstorms are still possible in southern and central Minnesota and into Wisconsin this Sunday afternoon and Sunday evening. Rain coverage is expected to be more spotty than it was this morning, so some locations will have downpours while some locations see no rain at all.

You can hear updated weather information for Minnesota and western Wisconsin on the Minnesota Public Radio network, and you can see updated weather info on the MPR News live weather blog.

Severe weather outlook

A few strong to severe thunderstorms are possible today. The National Weather Service Storm Prediction Center shows a slight risk (shaded yellow) of severe weather Sunday and Sunday night in portions of Wisconsin, with a marginal risk of severe weather (dark green) in parts of southern Minnesota, the Twin Cities metro area and west-central Wisconsin:

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Severe weather outlook Sunday and Sunday night
NWS Storm Prediction Center

Marginal risk means that an isolated severe thunderstorm is possible. Slight risk means that scattered severe thunderstorms are possible.

The severe weather outlook is updated several times each day by the Storm Prediction Center.

Flash flood watch in parts of Wisconsin

A flash flood watch continues until 1 a.m. Monday in portions of Wisconsin:

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Flash flood watch (shaded dark green) Sunday and Sunday evening
National Weather Service

Here’s more info on the flash flood watch:

National Weather Service La Crosse WI 1007 AM CDT Sun Aug 8 2021 WIZ029-032>034-041>044-053>055-082315- /O.CON.KARX.FF.A.0001.000000T0000Z-210809T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-Adams- Vernon-Crawford-Richland- Including the cities of Arcadia, Richland Center, Black River Falls, Alma, Neillsville, Whitehall, Prairie Du Chien, Sparta, Viroqua, La Crosse, Tomah, Friendship, and Mauston 1007 AM CDT Sun Aug 8 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flash Flood Watch continues for * Portions of central Wisconsin, southwest Wisconsin and west central Wisconsin, including the following areas, in central Wisconsin, Adams, Clark and Juneau. In southwest Wisconsin, Crawford, Richland and Vernon. In west central Wisconsin, Buffalo, Jackson, La Crosse, Monroe and Trempealeau. * Through late tonight. * Heavy rainfall Saturday afternoon and evening resulted in saturated soils. Additional storms with heavy rain will be possible this afternoon into the evening, with rainfall rates of 1 to 2 inches per hour possible. This rainfall could quickly result in flash floodig. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Temperature trends

Sunday afternoon highs should reach the 80s across most of Minnesota, with a few 70s and upper 60s near Lake Superior. Western Wisconsin will have mainly 70s.

Monday highs reach the 80s in most spots, with some lower 90s in the far south:

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Monday forecast highs
National Weather Service

Some spots in the metro area could touch 90.

Monday afternoon dew points will reach the steamy 70s in parts of the south, with sticky 60s elsewhere:

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Monday 4 p.m. forecast dew points
National Weather Service

Back to forecast high temps, Twin Cities metro area highs are projected to reach the upper 80s Tuesday and Wednesday, followed by mid 80s Thursday and around 80 on Friday.

Programming note

You can hear my live weather updates on MPR News at 7:35 a.m., 9:35 a.m. and 4:39 p.m. each Saturday and Sunday.

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