Hail — Knox, Illinois

2024-02-22 · near Yates City, Knox, Illinois

Wider weather episode

An unseasonably warm and humid airmass characterized by high temperatures in the upper 50s and lower 60s during the afternoon of February 21st preceded the approach of a cold front. As the front sagged into central Illinois and a nocturnal low-level jet interacted with the boundary, scattered thunderstorms developed across north-central Illinois during the pre-dawn hours of February 22nd. The strongest and longest lasting cell tracked from southern Knox County eastward into northern McLean County, producing hail as large as half dollars at times.

View location on OpenStreetMap → (40.7800, -90.0200)

Source: NOAA Storm Events Database, event_id 1154939. Narrative written by the NWS forecast office that issued the report.