[REVISION HISTORY]

Widespread severe weather and flooding across the U.S

Updated 1 time since CLSTR started tracking revisions of this situation.

What changed

2026-08-16 03:39 UTC → 2026-08-17 02:24 UTC · added ~~removed~~

~~Severe~~ Widespread severe weather ~~in central Ohio~~ and flooding across the U.S

Severe weather conditions have been forecast for central Ohio, characterized by the potential for brief tornadoes and heavy rainfall. The Storm Prediction Center noted a miniature supercell over Champaign County that may produce intermittent low-level rotation. In the Columbus area, a flood watch is in effect because of saturated ground and the possibility of several inches of rain from repeated thunderstorm rounds. Forecasters have identified damaging wind gusts as a primary concern, though increasing wind shear could support isolated tornadoes. Storm activity is expected to continue through the weekend. This period of instability has expanded into widespread severe weather across the United States. In the Midwest, a powerful derecho produced wind gusts reaching up to 99 mph in Portage, Indiana, and caused significant damage in the Chicago area, where the National Weather Service confirmed at least three tornadoes. In Colorado, a flash flood emergency was issued for the Middle and Squirrel Creek drainages, while severe thunderstorm watches were active for eastern Colorado and western Kansas. Forecasts indicate continued instability across the central and eastern U.S., with the Plains and Mississippi Valley facing risks of large hail, damaging winds, and tornadoes. Additionally, the Mid-South faces potential wind gusts of 60-70 mph and hail up to 2 inches.

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