
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
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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.
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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 |
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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