Mercer County, IL
Severe-weather activation briefing
Generated 2026-09-20T06:45:03.994901+00:00
8 active warnings
In the warned path — county-wide (estimate)
~16,000 residents, plus 2 nursing homes, 1 hospital and 8 schools
Active warnings (8)
Severe Thunderstorm Warning issued September 20 at 1:41AM CDT until September 20 at 2:15AM CDT by NWS Quad Cities IA IL
In path: ~0 residents.
Flash Flood Warning issued September 20 at 1:38AM CDT until September 20 at 7:30AM CDT by NWS Quad Cities IA IL
In path: ~16,000 residents, 2 nursing homes, 1 hospital and 8 schools.
Severe Thunderstorm Warning issued September 20 at 1:30AM CDT until September 20 at 2:15AM CDT by NWS Quad Cities IA IL
In path: ~0 residents.
Flash Flood Warning issued September 20 at 12:16AM CDT until September 20 at 6:15AM CDT by NWS Quad Cities IA IL
In path: ~0 residents.
Flood Watch issued September 19 at 10:12PM CDT until September 26 at 3:00AM CDT by NWS Quad Cities IA IL
In path: ~0 residents.
Flood Watch issued September 19 at 10:12PM CDT until September 25 at 3:00AM CDT by NWS Quad Cities IA IL
In path: ~0 residents.
Flood Watch issued September 19 at 10:12PM CDT until September 25 at 1:00PM CDT by NWS Quad Cities IA IL
In path: ~0 residents, 1 school.
Flood Watch issued September 19 at 8:42PM CDT until September 26 at 2:00AM CDT by NWS Quad Cities IA IL
In path: ~0 residents.
County exposure (baseline)
Mercer County, IL has an estimated 15,699 residents, including 2 nursing homes, 1 hospital and 8 schools. This is the denominator behind “in the warned path”.