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EF0 tornado in Buchanan County, Iowa

Tornado July 14, 2021 · Buchanan County, Iowa

EF0

Rating

3.2 mi

Whole path

30 yd

Path width

$275K

Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 30 yards (0.02 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

Brief tornado touchdown in Buchanan County, which crossed into Fayette County at 17:44 LST, and then into Oelwein.

The wider storm

Severe thunderstorms developed ahead of an approaching cold front during the afternoon and evening of Wednesday, July 14. Some of the storms produced damaging winds and numerous tornadoes. Brief torrential rainfall was also observed with the stronger storm cells. The areas that were hit hardest were in Buchanan, Delaware, Benton, Linn, and Jones counties in IA, where a total of 14 tornadoes occurred. 7 of the tornadoes had no visible damage.

Began near Hazleton (42.6400, -91.9500).

Other tornadoes from the same storm system

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

EF1 Jones County EF1 Jones County EF1 Jones County EF1 Delaware County EF1 Benton County EFU Benton County EFU Buchanan County EFU Benton County EFU Benton County EFU Linn County EFU Linn County EFU Delaware County

Source: NOAA Storm Events Database, event 971920. Narratives are written by the National Weather Service forecast office that issued the report.

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