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EF1 tornado in Johnson County, Arkansas

Tornado April 13, 2018 · Johnson County, Arkansas

EF1
Rating
5.0 mi
Path length
250 yd
Path width
$20K
Crop damage
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 250 yards (0.14 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

The tornado developed just northwest of Ozone in northern Johnson county, just south of County Road 5420, knocking down several large pine trees. This tornado continued northeast through rural areas of the Ozark National Forest, continuing to knock down several pine and a few hardwood trees, including a few snapped trunks. This tornado lifted just east of Arkansas Hwy 21 near County Road 5571.

The wider storm

Numerous supercell thunderstorms moved across Arkansas from the evening of the 13th into the early morning hours of the 14th. These storms produced multiple weak tornadoes and damaging wind gusts across the state. The tornadoes and damaging wind gusts produced primarily light structural damage, and one of the hardest hit areas was a nursing home near Mountain Home that was heavily damaged by 85 mph straight line winds.

Began near Ozone (35.6662, -93.4634).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 740610. Narratives are written by the National Weather Service forecast office that issued the report.

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