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EF0 tornado in Okmulgee County, Oklahoma

Tornado April 14, 2011 · Okmulgee County, Oklahoma

EF0
Rating
11.4 mi
Whole path
100 yd
Path width

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 yards (0.06 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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 second of two segments of this tornado. The tornado continued into Okmulgee County, producing no known damage in Okmulgee County as it remained over mostly open country until it dissipated. The rope stage of this tornado was recorded by storm chasers.

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 Nuyaka (35.6245, -96.1924).

Other tornadoes from the same storm system

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

EF2 Osage CountyEF2 Delaware CountyEF2 Pushmataha CountyEF1 Washington CountyEF1 Pittsburg CountyEF1 Pushmataha CountyEF1 Wagoner CountyEF1 Latimer CountyEF1 Pushmataha CountyEF1 Pushmataha CountyEF1 Le Flore CountyEF1 Le Flore CountyEF0 Osage CountyEF0 Okfuskee CountyEF0 Washington CountyEF0 Washington CountyEF0 Okfuskee CountyEF0 Latimer County

Source: NOAA Storm Events Database, event 302777. Narratives are written by the National Weather Service forecast office that issued the report.

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