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EF1 tornado in Monroe County, Illinois

Tornado April 20, 2025 · Monroe County, Illinois

EF1
Rating
7.3 mi
Path length
100 yd
Path width
$75K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 yards (0.06 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 touched down at 8:00 PM along Koch Road, southeast of Madonnaville, and moved northeast, producing minor damage to a home and an outbuilding along Rock Road. Further to the northeast along LRC Road the tornado overturned an outbuilding and caused tree damage. More tree damage and minor outbuilding roof damage occurred along JJ road as the tornado tracked northeast between Wartburg and Burksville. The tornado moved into southern Waterloo and produced minor roof damage to one of the greenhouses at Waterloo High School before turning to the east and damaging power poles along Highway 156. The power pole damage was the worst damage and winds were estimated as high as 100 mph (EF-1). The tornado dissipated shortly thereafter at 8:07 PM.The tornado was rated EF-1 with a path length of 7.33 miles and a maximum path width of 100 yards.

The wider storm

During the early evening of Sunday, April 20, 2025 (Easter Sunday) a line of severe thunderstorms responsible for multiple tornadoes and wind damage in Missouri crossed into Illinois. The line went on to produce 6 tornadoes spanning west-central, south-central, and southwest Illinois and no shortage of wind damage.

Began near Madonnaville (38.2534, -90.2182).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 1242855. Narratives are written by the National Weather Service forecast office that issued the report.

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