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Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Northern Plains and Upper Midwest

Dangerous heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms will produce damaging winds and heavy rainfall over portions of the northern/central Plains into the mid/upper-Mississippi Valleys today. Read More >

Overview

A line of storms moved across Iowa from northwest to southeast in the early morning hours of June 17, 2026. A swath of 60-70+ mph winds occurred along the path, along with sporadic gusts of 80+ mph. The strongest gust was recorded at the Marshall County airport at 94 mph! Widespread tree damage occurred with the storms in addition to snapped power poles and damage to homes and out buildings.  

These storms also produced heavy rain, especially from central to southeast Iowa. In this area a swath of 1-3+" of rain fell. 

 

This page remains under construction. Check back for updates.

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Damage in Marshall County, Iowa. 

Photo courtesy Kim Elder, Marshall County Emergency Management

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Shelf cloud observed in Grimes, Iowa. Photo courtesy of NWS employee Jack Rotter.

Damage in Marshall County, Iowa. Photo courtesy Kim Elder, Marshall County Emergency Management

Storm Reports

Storm reports from June 17, 2026. Click here for interactive map. 

 


Wind

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Wind

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Hail

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Rain Reports

 

Morning rainfall totals across Iowa. A swath of 1-3+" fell from central to southeast Iowa.


Radar

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