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EF1 tornado in Perry County, Arkansas

Tornado April 25, 2011 · Perry County, Arkansas

EF1
Rating
6.0 mi
Path length
300 yd
Path width
$700K
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

The worst damage from this tornado occurred at Heifer International's ranch. Several buildings had their roofs torn off and thrown into adjacent fields and several hay barns were destroyed. No animals at the ranch were harmed. Otherwise, several houses had major roof damage and some other houses had lesser amounts of roof damage. Dozens of trees were snapped off or blown over. Several vehicles were badly damaged by falling trees. Barns and outbuildings were damaged. A number of power lines were blown down.

The wider storm

From the 24th through the 27th, the arrival of a slow-moving cold front and several low pressure areas aloft triggered several rounds of thunderstorms. Tornadoes, severe storms, and flash flooding resulted. Widespread areal flooding followed the flash flooding. Some of this flooding was due to heavy rain, while some of it was caused by water from rivers, creeks, and bayous backing up onto the land. On the evening of the 25th, devastating tornadoes affected several areas in central Arkansas. More than 140,000 electric customers in Arkansas lost power. Heavy rains during this period were the beginning of the Great Flood of 2011 in Arkansas. Much of the flooding lasted well into May, and some even continued all the way to late June.

Began near Thornburg (34.9522, -92.8326).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 290100. Narratives are written by the National Weather Service forecast office that issued the report.

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