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EF1 tornado in Rock Island County, Illinois

Tornado July 16, 2015 · Rock Island County, Illinois

EF1

Rating

1.1 mi

Path length

200 yd

Path width

$2K

Damage as recorded

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 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

An EF1 tornado with estimated peak wind of 105 mph damaged trees and some homes along 94th Ave. Path length, 1.2 miles.Path width about 200 yards. The tornado began at 7 pm 0.5 miles southeast of Port Byron and lifted around 703 pm 1.3 miles east northeast of Port Byron.

The wider storm

A wave on a northward moving warm front produced scattered thunderstorms along the boundary. Low level shear was favorable for severe weather and tornadoes.

Began near Port Byron (41.6150, -90.3226).

Other tornadoes from the same storm system

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

EF2 Warren County EF1 Henderson County EF1 Warren County EF0 Whiteside County

Source: NOAA Storm Events Database, event 597150. Narratives are written by the National Weather Service forecast office that issued the report.

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