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Wildfire Smoke and Severe Thunderstorms in the East; Monsoon Thunderstorms in the Southwest

Wildfire smoke continues to impact air quality from the Great Lakes region into New England and the Mid-Atlantic today with widespread Air Quality Alerts in effect. Severe thunderstorms are expected across portions of the Ohio Valley and Lower Great Lakes into the Mid-Atlantic and Northeast, this afternoon into the evening. Monsoonal thunderstorms may bring areas of flooding to the Southwest. Read More >

Overview

Storms impacted parts of the region Friday afternoon and evening, August 27, 2021.  Hardest hit areas were northeast Iowa where at least 2 tornadoes occurred in addition to rounds of heavy rain.

A set of storms tracked across southern Floyd County, IA and produced tornadoes near Marble Rock and Greene, IA. One tornado (rated EF1) heavily damage a few farms. Damaging winds hit several other communities, especially between Calmar and Postville, IA where crops were flattened and some buildings sustained damage.

Rainfall of 3 to 8 inches also led to significant flooding over northeast Iowa. Area rivers flooded which led to the closure of many area highways, including US Highway  18 near Fredericksburg and New Hampton, IA.  Secondary roads were also damaged and several homes were flooded.

Information is preliminary and may be adjusted.

Image
Radar loop showing tornadic storms
over Floyd County, IA on Friday, August 27, 2021
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