Thunderstorm Wind — Warren, Illinois

2023-06-29 · near Swan Creek, Warren, Illinois

87 EG

Magnitude

Event narrative

Farm outbuilding destroyed. Winds estimated near 100 MPH.

Wider weather episode

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.

View location on OpenStreetMap → (40.6400, -90.6700)

Source: NOAA Storm Events Database, event_id 1103154. Narrative written by the NWS forecast office that issued the report.