Severe Thunderstorm Watch Issued for Northern Iowa Counties
Severe Thunderstorm Watch Issued for Northern Iowa Counties
US · Published Aug 19, 2026
The Storm Prediction Center has issued a Severe Thunderstorm Watch for northern counties in Iowa, including areas north of U.S. Highway 30, until 10:00 p.m. CDT on Tuesday, August 18,
The primary threats include large hail and gusty winds, with the potential for scattered strong to severe storms. The activity is being driven by a cold front moving through the region, which is creating favorable conditions for storm development, particularly in areas north of Highway

Impact & Risks

Residents in northern Iowa, particularly those in areas north of U.S. Highway 30 and Highway 20, should remain alert for potential severe weather. The main risks include large hail and gusty winds, which could cause localized damage to property and vegetation. While the threat of a widespread severe weather outbreak is low, isolated strong storms could still pose a danger. Drivers should also be cautious of patchy, dense fog in the early morning hours, which may reduce visibility and create hazardous travel conditions.

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