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EF1 tornado in Macoupin County, Illinois

Tornado March 11, 2026 · Macoupin County, Illinois

EF1

Rating

0.4 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

The tornado continued into Macoupin County from Madison County where it uprooted trees along Double Arch Road before dissipating.

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 Staunton (38.9989, -89.7378).

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 Madison County EF1 St. Clair County

Source: NOAA Storm Events Database, event 1325481. Narratives are written by the National Weather Service forecast office that issued the report.

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