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EF0 tornado in Ottawa County, Oklahoma

Tornado April 30, 2019 · Ottawa County, Oklahoma

EF0
Rating
13.5 mi
Whole path
650 yd
Path width
$120K
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 650 yards (0.37 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 segment of a two-segment tornado. In Ottawa County, the tornado damaged a home and snapped large tree limbs. Based on this damage, maximum estimated wind in this segment of the tornado was 80 to 85 mph.

The wider storm

Strong to severe thunderstorms developed across eastern Oklahoma during the early afternoon hours of the 30th, to the east of a stationary frontal boundary that was located across north-central Oklahoma into northwest Texas. Moderately strong instability combined with strong wind shear resulted in the development of supercell thunderstorms, which produced multiple tornadoes, including two strong tornadoes, large hail up to half dollar size, and damaging winds. Locally heavy rainfall also occurred across portions of northeastern Oklahoma, which resulted in flash flooding.

Began near Narcissa (36.8403, -94.9993).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 822223. Narratives are written by the National Weather Service forecast office that issued the report.

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