Thunderstorm Wind in Warren County, Illinois
Thunderstorm Wind June 29, 2023 · Warren County, Illinois
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Farm outbuilding destroyed. Winds estimated near 100 MPH.
The wider storm
On Thursday, June 29, a powerful severe wind event moved over the region. This event was known as a derecho given its long duration from north of Kansas City to southern Indiana and its consistent strong intensity. Almost all of the damage in the area surveyed locally was due to straight-line winds, at times easily peaking between 100-120 mph in far western Illinois. Those who experienced the event conveyed how the strongest winds persisted for 10 to 15 minutes, and in some locations, it lasted as long as 20 minutes, which is atypical for derecho events.
There were some swaths of enhanced damage. These were largely due to intense wind surges in the local area. One of these in Clark county, Mo was determined to be a short-lived EF1 tornado.
Began near Swan Creek (40.6400, -90.6700).
Source: NOAA Storm Events Database, event 1103154. Narratives are written by the National Weather Service forecast office that issued the report.
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