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EF1 tornado in Okmulgee County, Oklahoma

Tornado May 22, 2019 · Okmulgee County, Oklahoma

EF1
Rating
13.7 mi
Whole path
400 yd
Path width
$50K
Damage as recorded

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

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

This is the second segment of a two-segment tornado. This tornado moved into Okmulgee County over the west side of Dripping Springs Lake and moved north snapping and uprooting numerous trees from south of the E 1000 Road to north of the E 990 Road. The tornado turned north-northwest and dissipated near the E 980 Road and east of Highway 56. Based on the extensive damage to trees, maximum estimated wind in this segment of the tornado was 100 to 110 mph. This tornado was observed by several people, and produced a radar-detected debris signature.

The wider storm

Severe thunderstorms developed over northeastern Oklahoma during the afternoon hours of the 22nd, ahead of a cold front that moved into the area. Very strong instability and wind shear in the air mass ahead of the cold front allowed for the development of supercell thunderstorms, which affected the area through late evening. These supercells produced twenty-one documented tornadoes, including a significant tornado, large hail up to baseball size, damaging wind gusts, and locally heavy rainfall that resulted in flash flooding across northeastern Oklahoma.

Began near Nuyaka (35.5519, -96.1403).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 830314. Narratives are written by the National Weather Service forecast office that issued the report.

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