EF1 tornado — Crawford County, Arkansas

EF1 tornado in Crawford County, Arkansas

Tornado April 29, 2017 · Crawford County, Arkansas

EF1

Rating

5.5 mi

Path length

300 yd

Path width

$50K

Damage as recorded

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 300 yards (0.17 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

A tornado developed northwest of Natural Dam and moved northeast. It destroyed a mobile home, uprooted numerous trees, and damaged a permanent home along Highway 59. The tornado uprooted more trees as it crossed Liberty Hill Road, and then dissipated over wooded terrain south of Cove Creek Crossing. Based on this damage, maximum estimated wind in the tornado was 90 to 100 mph.

The wider storm

Strong to severe thunderstorms developed during the late evening hours of the 28th over portions of northwestern Arkansas, along and north of a warm front that had moved into the area during the day. These storms produced hail up to golfball size, damaging wind, and locally heavy rainfall through the early morning hours of the 29th.

Another round of severe weather developed during the afternoon hours of the 29th, as a cold front moved into the area from the north. These storms produced a tornado, damaging wind, and locally heavy rainfall.

Source: NOAA Storm Events Database, event 691676. Narratives are written by the National Weather Service forecast office that issued the report.

EF1 tornado in Crawford County, Arkansas

What the National Weather Service wrote

The wider storm

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