Thunderstorm Wind — Knox, Illinois

2023-08-11 · near Galesburg, Knox, Illinois

Event narrative

Trees and power lines were blown down.

Wider weather episode

Thunderstorms developed overnight across Iowa, ahead of a cold front, in an environment characterized by moderate instability and shear. The storms congealed into a line that swept across central Illinois during the early morning hours of August 11, producing scattered damaging winds before weakening after moving east of I-55. The thunderstorms produced locally heavy rainfall over 1 inch, which led to minor flooding in urban areas.

View location on OpenStreetMap → (40.9500, -90.3700)

Source: NOAA Storm Events Database, event_id 1122231. Narrative written by the NWS forecast office that issued the report.