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EF1 tornado in Wagoner County, Oklahoma

Tornado April 14, 2011 · Wagoner County, Oklahoma

EF1
Rating
1.8 mi
Path length
290 yd
Path width
$40K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 290 yards (0.16 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

A tornado damaged a permanent home, destroyed several outbuildings, and snapped or uprooted a number of trees. Maximum estimated wind in the tornado based on this damage was about 110 mph.

The wider storm

Low pressure was centered over southern Kansas during the early afternoon of the 14th with a sharp dryline extending from the low pressure system through central Oklahoma. A moist and very unstable air mass was in place across eastern Oklahoma ahead of the dryline. Severe thunderstorms developed along the dryline during the afternoon and moved into eastern Oklahoma during the early evening hours. Large hail up to grapefruit size, damaging wind gusts, and numerous tornadoes occurred as the storms moved through the region.

Began near La Barge (35.9862, -95.4067).

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 302802. Narratives are written by the National Weather Service forecast office that issued the report.

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