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EF1 tornado in Adair County, Missouri

Tornado May 13, 2009 · Adair County, Missouri

EF1
Rating
7.7 mi
Path length
100 yd
Path width
$100K
Damage as recorded
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 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 EF1 tornado touched down around 5 miles west of Novinger at 16:43 CST, and paralled Highway 6 as it moved east. The tornado lifted around 2 miles east of Novinger at 16:55 CST. The tornado destroyed a house and out building west of Novinger. On the south side of Novinger, a mobile home was destroyed and power poles and lines were downed. Additional power poles and trees were damaged, before the tornado lifted.

The wider storm

During the evening of May 13, 2009, a series of powerful supercell storms developed ahead of a cold front, pushing southward out of Iowa and Nebraska. These supercell storms produced a wide array of severe weather, with large hail up to the size of golf balls and winds up to 60 mph reported. These storms marched across eastern Kansas and northern Missouri during the evening hours, with a strong supercell storm producing tornadic activity in parts of northeast Missouri. Damage surveys conducted

by the National Weather Service, in conjunction with emergency management, have

found evidence of three tornadoes in Sullivan and Adair counties. All tornadoes

appeared to have been produced by the same supercell thunderstorm. There were

three fatalities. Moderate to severe damage was reported, in the Kirksville area.

Began near Pure Air (40.2267, -92.8133).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 171720. Narratives are written by the National Weather Service forecast office that issued the report.

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