Mercer County IL Tornado Warnings — Live Alerts & History
Illinois · updates automatically
Active Tornado Warnings
No active tornado warnings for Mercer County right now
This page updates automatically — new NWS tornado warnings for the county appear here within about a minute of issuance.
Tornado History for Mercer County (Since 1950)
Tornadoes on Record
43
1950–present · NOAA/SPC
Violent (EF3+)
1
2.3% of total
Fatalities
0
4 injuries
Strongest Rating
F3
Fujita / Enhanced Fujita
Most Recent
June 3, 2025
Latest tornado on record
Recent Tornado Warning History
| Date | Issued | Expired |
|---|---|---|
| April 17, 2026 | 10:46 PM UTC | 11:10 PM UTC |
| April 16, 2026 | 1:24 AM UTC | 2:03 AM UTC |
| April 16, 2026 | 1:02 AM UTC | 1:30 AM UTC |
Mercer County Facts
- FIPS Code
- 17131
- NWS County Code (UGC)
- ILC131
More for Mercer County
Recent warning events
Active warnings come from the National Weather Service and refresh on
this page about once a minute. Tornado climatology is computed from the
NOAA/SPC storm events archive (1950–present). VORTEX is not a substitute
for official NWS warnings or a NOAA Weather Radio.