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EF1 tornado in Whiteside County, Illinois

Tornado July 21, 2017 · Whiteside County, Illinois

EF1

Rating

3.7 mi

Path length

150 yd

Path width

$40K

Damage as recorded

$2K

Crop damage

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 150 yards (0.09 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

Tornado was rated an EF-1 which touched down on the eastern shore of the Mississippi River and hit the city of Fulton Illinois. The tornado tracked east northeast and caused damage to mainly trees and a cemetery along its 3.7 mile path and max width of 150 yards. Two garages and one farm outbuilding, and some corn were also damaged.

The wider storm

A long duration convective event along a stalled boundary occurred. This resulted in a major heavy rain and flooding event from 3 to over 8 inches of rain falling. Some storms become severe with damaging winds over 60 mph and isolated large hail.

Began near Fulton (41.8722, -90.1666).

Source: NOAA Storm Events Database, event 716075. Narratives are written by the National Weather Service forecast office that issued the report.

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