A powerful derecho tore across Iowa and neighboring states Monday night into Tuesday, July 29, 2025, in a dramatic episode of widespread destructive weather now officially confirmed by the National Weather Service as a derecho event. Winds in northwest Iowa reached up to 99 miles per hour, with meteorologist Alexis Jimenez describing the event as a “land hurricane,” a term sometimes used for these exceptionally long-lived and damaging windstorms, according to Radio Iowa.
The line of severe thunderstorms that began forming in southeast South Dakota and northwest Iowa rapidly merged and intensified, creating a massive bow-shaped system visible on radar. The strongest winds battered northern and eastern Iowa, with damage reports streaming in from numerous communities, including Carroll, Waterloo, Cedar Rapids, and Des Moines. In addition to wind damage, parts of Iowa broke rainfall records, with Des Moines surpassing its July precipitation high, tallying 10.62 inches for the month, KSCH reported.
As this derecho charged eastward into the Tri-State area of Iowa, Illinois, and Missouri, winds diminished but still knocked out power to thousands, especially around Quincy, Illinois. By definition, this derecho qualified due to a wind damage swath extending over 240 miles, with gusts above 58 mph throughout much of its length, as explained by KTVO News.
Cleanup continues in many hard-hit Iowa communities, with early estimates suggesting several days or more will be needed to fully restore power and clear debris. Many residents woke Tuesday and Wednesday mornings to uprooted trees, damaged property, and flooded low-lying areas. The Storm Prediction Center designated this event as a derecho after confirming the exceptional size, longevity, and wind impact.
Derechos remain uncommon but most frequently strike the Midwest and Plains during the hot, humid periods of midsummer. Meteorologists like Gino Izzi of the National Weather Service emphasize how quickly conditions can escalate, advising listeners to stay alert for severe weather alerts, especially during July and August.
Derechos like the one this week demonstrate the power of straight-line winds, which unlike tornadoes, can knock down trees, power lines, and cause structural damage over hundreds of miles in just a few hours. This most recent episode follows a pattern of severe weather throughout the Central U.S. in midsummer, including several consecutive nights of damaging storms and oppressive heat indexes above 110 degrees in Iowa. The region is now expecting calmer, drier weather for the upcoming days, providing an opportunity for recovery.
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