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EF1 tornado in Buchanan County, Iowa

Tornado July 23, 2016 · Buchanan County, Iowa

EF1

Rating

0.2 mi

Whole path

25 yd

Path width

$5K

Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 25 yards (0.01 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

A tornado touched down near the county line and moved east into Delaware County.

The wider storm

A disturbance interacting with a frontal system produced an area of severe thunderstorms with numerous damaging winds, some flash flooding and a few isolated, brief tornadoes.

Began near Monti (42.4393, -91.5984).

Other tornadoes from the same storm system

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

EF1 Delaware County EF0 Dubuque County

Source: NOAA Storm Events Database, event 654437. Narratives are written by the National Weather Service forecast office that issued the report.

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