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EF0 tornado in Grundy County, Illinois

Tornado February 28, 2017 · Grundy County, Illinois

EF0

Rating

1.2 mi

Path length

200 yd

Path width

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

The path of this tornado was estimated based on video evidence as well as debris found along Interstate 80 near mile marker 104. (Tornado #4 of 7).

The wider storm

The late afternoon into the evening of Tuesday, February 28 brought a favorable setup for severe weather, including strong tornadoes across much of the Mid-Mississippi Valley and Lower Great Lakes regions. There were seven tornadoes confirmed in the NWS Chicago county warning area. Large hail was reported in numerous areas.

Began near Stockdale (41.3753, -88.5841).

Other tornadoes from the same storm system

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

EF3 La Salle County 2 dead EF3 La Salle County EF2 La Salle County EF1 Ogle County EF0 La Salle County

Source: NOAA Storm Events Database, event 674620. Narratives are written by the National Weather Service forecast office that issued the report.

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