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EF1 tornado in Jefferson County, Arkansas

Tornado October 29, 2009 · Jefferson County, Arkansas

EF1
Rating
2.6 mi
Path length
400 yd
Path width
4
Injuries
$400K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 400 yards (0.23 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

Soon after the tornado touched down, it damaged a church, where the steeple was toppled and the portico blown down. It then took part of the roof off a house. Next, the tornado traveled into a shopping center. A discount store had several doors blown in, part of the facade blown off, and damage to the roof which resulted in water dripping inside the store.. A car, a small pickup truck, and a tractor-trailer were overturned. Shopping carts and cart corrals were blown around the parking lot. An ice machine at a gas station was blown out into the driveway. A couple of restaurants and a branch bank suffered roof damage. A couple of business signs were blown out. Three people were injured in the business area. The tornado then continued into a residential area. One house was badly damaged when a tree fell into it, and a couple of outbuildings were destroyed. Several homes had shingles torn off and a fence was blown down. Along the path of the tornado, dozens of large trees were blown down. One of these trees fell on a car, injuring a person.

The wider storm

A large storm system in the Rockies headed through the Plains into the upper Midwest on the 29th. Rain increased ahead of the system, and became widespread in Arkansas. Meanwhile, a cold front arrived from the west. Because the system was so far to the north, it did not give the front much push. The front slowed down, which prolonged the rain. The result was widespread flash flooding, which gave way to areal flooding and river flooding. Winds changed direction and speed up through the atmosphere, a favorable condition for tornadoes. However, instability was sufficient only in southern Arkansas for the development of tornadoes.

Began near Brewster (34.1632, -92.0152).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 196842. Narratives are written by the National Weather Service forecast office that issued the report.

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