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EF1 tornado in Delaware County, Indiana

Tornado November 5, 2017 · Delaware County, Indiana

EF1

Rating

0.1 mi

Path length

100 yd

Path width

$20K

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

Brief EF1 tornado within the heart of Muncie, with winds estimated at 95 mph, destroyed a garage, removed roof panels from a couple houses, snapped numerous trees, and uprooted a large tree then deposited it north of another large tree that was north of it.

A large bow echo on radar producing widespread straight line wind damage spun up this small, brief EF1 tornado.

The wider storm

Waves of low pressure moved along a strong cold front on November 5th, generating strong to severe thunderstorms during the afternoon and evening hours. Strong 850mb winds brought up plenty of moisture for the storms to work with and the storms produced some tornadoes, damaging winds, large hail, and flooding.

Began near Muncie (40.1991, -85.3858).

Other tornadoes from the same storm system

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

EF2 Delaware County EF1 Lawrence County

Source: NOAA Storm Events Database, event 729253. Narratives are written by the National Weather Service forecast office that issued the report.

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