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EF1 tornado in St. Clair County, Illinois

Tornado March 14, 2025 · St. Clair County, Illinois

EF1

Rating

6.8 mi

Whole path

450 yd

Path width

$170K

Damage as recorded

NOAA records this tornado county by county. Its path ran through St. Clair County → Madison County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 450 yards (0.26 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF1 means. On the Enhanced Fujita scale, EF1 is moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken, consistent with estimated gusts of 86–110 mph. The rating comes from a survey of the worst damage after the storm, not from a wind measurement, so it says as much about what the tornado hit as about how strong it was.

What the National Weather Service wrote

At approximately 10:28 PM a tornado began in the northeastern outskirts of O'Fallon, IL where it caused damage to multiple mobile homes, single family homes, outbuildings, and trees along its track northeast. The tornado then passed into southern Madison County. In Madison County the tornado was rated EF-1 with a path length of 6.75 miles and a maximum path width of 770 yards. In St. Clair County the tornado was rated EF-1 with a path length of 5.9 miles and a maximum path width of 450 yards.

The wider storm

During the late afternoon of March 14, 2025, numerous severe thunderstorms developed across central Missouri and tracked east. After sunset, these thunderstorms began producing tornadoes, some strong, across portions of Missouri and Illinois. In total, 13 tornadoes touched down in the CWA, making it one of the most active outbreaks on record for the St. Louis CWA. Six of these tornadoes occurred at least partially in St. Louis's Illinois counties.

Began near O Fallon (38.6129, -89.8779).

Other tornadoes from the same storm system

5 more tornadoes the National Weather Service filed under this storm episode.

EF2 St. Charles County EF2 St. Clair County EF2 Perry County EF1 Monroe County EF1 Fayette County

Source: NOAA Storm Events Database, event 1241477. Narratives are written by the National Weather Service forecast office that issued the report.

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