AtmostormCounty briefing

Warren County, IL

Severe-weather activation briefing

Generated 2026-09-20T08:58:48.210616+00:00

1 active warning

Radar over Warren County, IL with the warned area outlined

In the warned path — county-wide (estimate)

~0 residents, plus 1 school

Active warnings (1)

1. Flash Flood Warninguntil 2026-09-20T12:30:00+00:00

Flash Flood Warning issued September 20 at 2:40AM CDT until September 20 at 7:30AM CDT by NWS Quad Cities IA IL

In path: ~0 residents, 1 school.

Storm details · Full facility list (per-warning briefing)

County exposure (baseline)

Warren County, IL has an estimated 16,835 residents, including 2 nursing homes, 1 hospital and 11 schools. This is the denominator behind “in the warned path”.