Hail — Jasper, Illinois

2022-08-01 · near Shamrock, Jasper, Illinois

Wider weather episode

An outflow boundary from convection earlier in the day served as the primary focusing mechanism for numerous storm clusters along and south of I-70 from the late afternoon of August 1st into the pre-dawn hours of August 2nd. Some of the storms dropped very large hail up to 2 inches in diameter. In addition, continuous back-building cells produced a swath of heavy rainfall in excess of 8 inches from eastern Effingham County across Jasper County into northeastern Richland County. As a result, many roads were closed due to flash flooding. The flooding lingered until around midday on August 2nd, particularly in the hardest hit locations from Dietrich in Effingham County to Newton in Jasper County.

View location on OpenStreetMap → (38.8900, -88.2100)

Source: NOAA Storm Events Database, event_id 1050653. Narrative written by the NWS forecast office that issued the report.