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EF1 tornado in Madison County, Illinois

Tornado March 11, 2026 · Madison County, Illinois

EF1

Rating

1.2 mi

Path length

10 yd

Path width

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 10 yards (0.01 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

A brief tornado touched down just west of I-55 in Madison County where it caused power poles to lean askew. The tornado then headed northeast where it caused minor roof damage to a home.

The wider storm

During the early morning of March 11th, a QLCS pushed through portions of southern Illinois. The QLCS caused thunderstorm wind damage as it passed and produced 4 tornadoes.

Began near Williamson (38.9915, -89.7554).

Other tornadoes from the same storm system

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

EF1 Jersey County EF1 Madison County EF1 Macoupin County EF1 St. Clair County

Source: NOAA Storm Events Database, event 1325479. Narratives are written by the National Weather Service forecast office that issued the report.

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