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EF0 tornado in McHenry County, Illinois

Tornado November 22, 2010 · McHenry County, Illinois

EF0

Rating

18.1 mi

Whole path

200 yd

Path width

Injuries

$5.0M

Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 200 yards (0.11 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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 touched down in eastern Winnebago County, moved northeast across Boone County and then crossed into northwest McHenry County. Damage consisted of mainly sporadic tree damage across McHenry County where the tornado appears to have dissipated at 325 pm CST.

The wider storm

Strong to severe thunderstorms moved across parts of northern Illinois during the afternoon hours of November 22nd. These storms produced two tornadoes, hail, heavy rain and some flooding.

Began near Chemung (42.4249, -88.7061).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

EF1 McHenry County

Source: NOAA Storm Events Database, event 1244228. Narratives are written by the National Weather Service forecast office that issued the report.

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