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EF3 tornado in Cook County, Illinois

Tornado June 20, 2021 · Cook County, Illinois

EF3

Rating

17.6 mi

Whole path

600 yd

Path width

Injuries

NOAA records this tornado county by county. Its path ran through Du Page County → Cook County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 600 yards (0.34 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF3 means. On the Enhanced Fujita scale, EF3 is severe damage: whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, consistent with estimated gusts of 136–165 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 tornado which touched down in Naperville and moved across far southern DuPage County crossed into Cook County near 83rd Street. The tornado produced only tree damage along its path in Cook County and the tornado ended near the Buffalo Woods just east of Forest Avenue.

The wider storm

A line of severe thunderstorms moved across northern Illinois during the late evening of June 20th and the early morning of June 21st producing wind damage and three tornadoes.

Began near Burr Ridge (41.7374, -87.9151).

Other tornadoes from the same storm system

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

EF0 Will County EF0 Du Page County

Source: NOAA Storm Events Database, event 960282. Narratives are written by the National Weather Service forecast office that issued the report.

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