EF0 tornado in Buena Vista County, Iowa

Tornado April 9, 2011 · Buena Vista County, Iowa

EF0

Rating

0.3 mi

Whole path

50 yd

Path width

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 50 yards (0.03 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

A brief tornado, one of two close together, caused no reported damage.

The wider storm

Thunderstorms produced widespread severe weather in northwest Iowa during the evening of April 9th, beginning at the end of the afternoon. Most of the reports at the start of the event were large hail, but damaging winds and tornadoes then developed, with significant damage reported.

Began near Alta (42.6400, -95.3400).

Other tornadoes from the same storm system

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

EF3 Sac County EF2 Ida County EF1 Ida County EF1 Cherokee County EF0 Buena Vista County

Source: NOAA Storm Events Database, event 302267. Narratives are written by the National Weather Service forecast office that issued the report.

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