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EF1 tornado in Henderson County, Illinois

Tornado July 16, 2015 · Henderson County, Illinois

EF1

Rating

0.8 mi

Path length

100 yd

Path width

$25K

Damage as recorded

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 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

An EF1 tornado with maximum winds estimated at 95 mph touched down 1.1 miles east of Lone Tree, IL. The tornado traveled 0.84 miles and lifted 1.8 miles east northeast of Lone Tree. The maximum path width was about 100 yards. Along the path, trees and outbuildings were destroyed.

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 Lone Tree (40.8328, -90.9995).

Other tornadoes from the same storm system

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

EF2 Warren County EF1 Warren County EF1 Rock Island County EF0 Whiteside County

Source: NOAA Storm Events Database, event 597117. Narratives are written by the National Weather Service forecast office that issued the report.

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