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Overview

**This information is preliminary and will be updated over the next few days**

 

A well defined cold front associated with a strong upper level low produced widespread wind damage and isolated tornadoes throughout central and eastern Minnesota and western Wisconsin on August 29th, 2024.

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Preliminary storm reports from August 29, 2024. For the latest storm reports, please visit the Storm Prediction Center.

Wind:

There was extensive wind damage that occurred. This event did not have as much widespread damage reported as with the storms on August 26/27, 2024, however it did impact a lot of the same areas which further exasperated power outages and response efforts.

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Large tree downed in Eden Prairie. Photo credit to Jay Wood. Large tree snapped near its base, blocking a road in Willmar, MN. Photo credit to @gopherhockeysi on X. Several large trees downed and pontoon boat and cover flipped near Weaver Lake in Maple Grove, MN. Photo credit to Andrew Siffert. Large camper trailer tipped and blocking the road near 229th Avenue and Holly Street within St. Francis, MN.

Radar

Hourly timesteps of Base Reflectivity and Base Velocity as the storms developed over western Minnesota and travelled east into western Wisconsin.

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Base Reflectivity (left) and Base Velocity (right) at 2PM CDT. Scattered storms began to develop during the afternoon over parts of western MN along the frontal boundary. Base Reflectivity (left) and Base Velocity (right) at 3PM CDT. Storms began to congeal into a line, especially across central MN. Base Reflectivity (left) and Base Velocity (right) at 4PM CDT. Winds intensified over Carver County as the line began to push into the Twin Cities Metro.
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Base Reflectivity (left) and Base Velocity (right) at 5PM CDT. The line intensified with strong winds stretching from Isanti County south towards northern Dakota County. Base Reflectivity (left) and Base Velocity (right) at 6PM CDT. Overall strength of the winds weakened as the line moved into Wisconsin, however there was still a risk of embedded tornados along the line. Base Reflectivity (left) and Base Velocity (right) at 7PM CDT. The line intensified again, resulting in widespread wind damage in Dunn, Pierce, and St. Croix Counties.
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Base Reflectivity (left) and Base Velocity (right) at 8PM CDT. The line began to weaken again as it moved further into Wisconsin.

Rain Reports

The line of storms move quickly through western and central MN, limiting rainfall totals. Storm motion slow quite a bit as the line moved into Wisconsin, resulting in pockets of 2"+ of rain. Parts of southern Polk County received over 3" of rain, resulting in areas of flash flooding in some cities.


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