EF0 tornado in Cavalier County, North Dakota

Tornado August 9, 2020 · Cavalier County, North Dakota

EF0

Rating

0.3 mi

Path length

40 yd

Path width

$50K

Crop damage

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 40 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

A brief touchdown was noted and photographed in an open field, before the tornado became engulfed in downburst winds and heavy rain. The tornado likely tracked for a half mile or less and ended by 1059 am CST. Peak winds estimated to 80 mph.

The wider storm

A cold front moved across eastern North Dakota and the northwest quarter of Minnesota on Sunday, August 9th. Abundant moisture remained in place, with dew points in the upper 60s to lower 70s. Thunderstorms formed across the area, producing large hail, damaging wind gusts, and tornadoes.

Began near Osnabrock (48.6700, -97.9747).

Other tornadoes from the same storm system

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

EF1 Barnes County EF0 Traill County

Source: NOAA Storm Events Database, event 931857. Narratives are written by the National Weather Service forecast office that issued the report.

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