Emergency Management Mercer County, IL — Severe Weather Impact Who and what is in the warned path. Decision-support only — confirm with your local NWS office; facility coverage is incomplete for some kinds.
8 active warnings
In the warned path right now: ~15,699 residents , plus 1 hospital, 2 nursing homes and 8 schools.
🔔 Get warned for Mercer County, IL
One tap turns on push alerts for Tornado & Severe Thunderstorm Warnings that hit Mercer County, IL — even when the app is closed. No account needed.
Turn on alerts for Mercer County, IL Active warnings Severe Thunderstorm Warning until 7:15 AM UTC
Severe Thunderstorm Warning issued September 20 at 1:41AM CDT until September 20 at 2:15AM CDT by NWS Quad Cities IA IL
In the path: ~0 residents.
Storm details, timeline & reports → Flash Flood Warning until 12:30 PM UTC
Flash Flood Warning issued September 20 at 1:38AM CDT until September 20 at 7:30AM CDT by NWS Quad Cities IA IL
In the path: ~15,699 residents, 1 hospital, 2 nursing homes and 8 schools.
Storm details, timeline & reports → Severe Thunderstorm Warning until 7:15 AM UTC
Severe Thunderstorm Warning issued September 20 at 1:30AM CDT until September 20 at 2:15AM CDT by NWS Quad Cities IA IL
In the path: ~0 residents.
Storm details, timeline & reports → Flash Flood Warning until 11:15 AM UTC
Flash Flood Warning issued September 20 at 12:16AM CDT until September 20 at 6:15AM CDT by NWS Quad Cities IA IL
In the path: ~0 residents.
Storm details, timeline & reports → Flood Watch until 3:15 AM UTC
Flood Watch issued September 19 at 10:12PM CDT until September 26 at 3:00AM CDT by NWS Quad Cities IA IL
In the path: ~0 residents.
Storm details, timeline & reports → Flood Watch until 3:15 AM UTC
Flood Watch issued September 19 at 10:12PM CDT until September 25 at 3:00AM CDT by NWS Quad Cities IA IL
In the path: ~0 residents.
Storm details, timeline & reports → Flood Watch until 3:15 AM UTC
Flood Watch issued September 19 at 10:12PM CDT until September 25 at 1:00PM CDT by NWS Quad Cities IA IL
In the path: ~0 residents, 1 school.
Storm details, timeline & reports → Flood Watch until 1:45 AM UTC
Flood Watch issued September 19 at 8:42PM CDT until September 26 at 2:00AM CDT by NWS Quad Cities IA IL
In the path: ~0 residents.
Storm details, timeline & reports → County exposure The at-risk baseline for Mercer County, IL — the denominator behind “in the path”.
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I'm an emergency manager → Not an official warning source. Always confirm with your local NWS office and follow official guidance. Impact figures are estimates from public data (census + facility datasets) and are incomplete for some facility kinds.