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EF1 tornado in Ozark County, Missouri

Tornado April 30, 2010 · Ozark County, Missouri

EF1

Rating

20.5 mi

Whole path

440 yd

Path width

$120K

Damage as recorded

NOAA records this tornado county by county. Its path ran through Marion County, Arkansas → Ozark County → Ozark County → Ozark County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 440 yards (0.25 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

An EF-1 tornado produced 90 to 100 mph winds uprotting numerous trees, damaging several outbuildings, a horse trailer, and downing power lines and poles.

The wider storm

An approaching shortwave trough and accompanying surface low tracked northeast of Arkansas and into southern Missouri. A modest instability and high shear environment with very moist airmass supported widespread convection and a few supercells. A tornadic supercell tracked northeast from north central Arkansas through Ozark and Howell counties in Missouri producing five tornadoes.

Began near Hardenville (36.5821, -92.3718).

Other tornadoes from the same storm system

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

EF1 Ozark County EF1 Howell County

Source: NOAA Storm Events Database, event 226356. Narratives are written by the National Weather Service forecast office that issued the report.

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