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EF1 tornado in Franklin County, Arkansas

Tornado May 24, 2011 · Franklin County, Arkansas

EF1
Rating
45.7 mi
Whole path
500 yd
Path width
4
Deaths
27
Injuries
$9.1M
Damage as recorded

NOAA records this tornado county by county. Its path ran through Franklin County → Logan County → Franklin County → Logan County → Franklin County → Johnson County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 500 yards (0.28 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

This is the first of six segments of this tornado. The tornado developed just east of Highway 41 south of Branch where it snapped large tree limbs and caused minor damage to a home. The tornado moved northeast damaging at least one mobile home, snapping power poles, and snapping or uprooting large trees. Maximum estimated wind in this segment of the tornado based on this damage was about 105 mph. The tornado continued into Logan County, Arkansas.

The wider storm

Severe thunderstorms developed along a dry line over central Oklahoma during the afternoon hours. Very unstable air and strong wind shear east of the dry line supported supercell thunderstorm structures, which persisted as the storms moved into northwestern Arkansas late in the evening. These severe storms produced tornadoes, large hail, and damaging downburst wind across portions of northwestern Arkansas. One of the tornadoes was especially intense, resulting in considerable damage to several towns as well as three fatalities in Franklin County.

Began near Branch (35.2781, -93.9515).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 312994. Narratives are written by the National Weather Service forecast office that issued the report.

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