Mason County IL Tornado Warnings — Live Alerts & History
Illinois · updates automatically
Active Tornado Warnings
No active tornado warnings for Mason 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 Mason County (Since 1950)
Tornadoes on Record
38
1950–present · NOAA/SPC
Violent (EF3+)
3
7.9% of total
Fatalities
1
60 injuries
Strongest Rating
F3
Fujita / Enhanced Fujita
Most Recent
September 20, 2025
Latest tornado on record
Recent Tornado Warning History
| Date | Issued | Expired |
|---|---|---|
| June 11, 2026 | 10:59 PM UTC | 11:30 PM UTC |
| June 11, 2026 | 10:19 PM UTC | 11:00 PM UTC |
| April 27, 2026 | 10:42 PM UTC | 11:15 PM UTC |
| April 18, 2026 | 1:28 AM UTC | 2:00 AM UTC |
| April 18, 2026 | 1:20 AM UTC | 2:00 AM UTC |
| April 18, 2026 | 1:10 AM UTC | 1:45 AM UTC |
| April 18, 2026 | 12:56 AM UTC | 1:30 AM UTC |
| April 3, 2026 | 11:40 PM UTC | 12:15 AM UTC |
| April 3, 2026 | 10:29 PM UTC | 11:00 PM UTC |
| April 3, 2026 | 10:00 PM UTC | 10:30 PM UTC |
| March 11, 2026 | 4:57 AM UTC | 5:34 AM UTC |
Mason County Facts
- FIPS Code
- 17125
- NWS County Code (UGC)
- ILC125
More for Mason 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.