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EF1 tornado in Custer County, Nebraska

Tornado April 20, 2007 · Custer County, Nebraska

EF1
Rating
18.9 mi
Whole path
220 yd
Path width
9
Injuries
$2.6M
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 220 yards (0.12 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 tornado formed southwest of Gothenburg in Dawson County (see Storm Data for Nebraska, South Central for more information on the beginning portion of this tornado) and tracked north before entering Custer County about 21 miles west southwest of Oconto at 9:35 PM CST. The tornado continued for another 7 miles before dissipating 17 miles southwest of Callaway at 9:40 PM CST. In Custer County, the tornado destroyed a barn, chicken house, milk house, an oil bin, and two dryer bins. In addition, it overturned center pivot irrigation systems, snapped and uprooted trees, and broke off power poles. While in Dawson County, the tornado was rated an F2 but was rated an F1 in Custer County.

The wider storm

Supercells developed rapidly and became tornadic across southwest Nebraska during the evening of April 20th.

Began near Oconto (41.0299, -100.1647).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 24024. Narratives are written by the National Weather Service forecast office that issued the report.

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