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EF1 tornado in Cook County, Illinois

Tornado February 27, 2024 · Cook County, Illinois

EF1
Rating
8.9 mi
Whole path
110 yd
Path width

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 110 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

This tornado touched down in the area near Della Drive in Hoffman Estates and tracked northeast, snapping tree branches, downing power lines along Hassell Road, and damaging shingles, fascia, and gutters on homes. The tornado then tracked across I-90 and entered the Paul Douglas Forest Preserve, where it snapped and uprooted several trees. The tornado then exited the forest preserve and entered the subdivision to the northwest of Algonquin Road and Ela Road, where it caused roof, soffit, and fascia damage to several residences. Shortly thereafter, the tornado lifted as it entered Inverness.

The wider storm

Following summer-like, record warmth, severe thunderstorms developed in the late afternoon of February 27th over northwest Illinois and spread east through the evening across the Chicago metro area. A total of 11 tornadoes touched down in Illinois. There were 11 tornadoes in total across the NWS Chicago area of responsibility, which is the most in a February event since official NWS tornado records began in 1950. In addition to the tornadoes, the storms produced numerous instances of severe hail and damaging straight-line wind.

Began near Hoffman Estates (42.0572, -88.1184).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 1155977. Narratives are written by the National Weather Service forecast office that issued the report.

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