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EF1 tornado in Grant County, Arkansas

Tornado April 30, 2010 · Grant County, Arkansas

EF1
Rating
2.8 mi
Path length
75 yd
Path width
$40K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 75 yards (0.04 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

An EF1 tornado caused roof damage to a house and a church. Half of a barn roof was blown off and trees were blown down. This was the first of five tornadoes spawned by the same supercell thunderstorm.

The wider storm

Moisture from the Gulf of Mexico surged into Arkansas at the end of April, so conditions in the state became warm and humid. On the 30th, a strong area of low pressure aloft approached from the west, resulting in the development of thunderstorms. Wind shear, a change in wind direction and speed with height, was present. This created a favorable environment for the formation of tornadoes.

Began near Belfast (34.3929, -92.5105).

Other tornadoes from the same storm system

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

EF3 Van Buren County 1 deadEF3 Jackson CountyEF2 Conway CountyEF2 Saline CountyEF2 Pulaski CountyEF1 Van Buren CountyEF1 Dallas CountyEF1 White CountyEF1 Marion County

Source: NOAA Storm Events Database, event 219258. Narratives are written by the National Weather Service forecast office that issued the report.

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