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EF1 tornado in Deuel County, South Dakota

Tornado May 30, 2022 · Deuel County, South Dakota

EF1
Rating
0.4 mi
Path length
20 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 20 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 clear path was observed through a tree grove. Additionally, farm machinery was tossed around on the property.

The wider storm

Storms redeveloped in the late morning, with supercell characteristics across eastern South Dakota producing up to one inch diameter hail and winds of 70 mph, in addition to 6 confirmed tornadoes, one of which was rated EF3. Heavy rain also occurred with this system, with the greatest amount of rainfall measured by a CoCoRaHS observer being 4.69 inches measured near Columbia, and the highest COOP observer report coming out of Milbank with a two day total of 2.86. This heavy rain resulted in flooding in several rural locations but also included parts of Watertown and Aberdeen.

Began near Clear Lake Muni Arpt (44.7731, -96.7557).

Other tornadoes from the same storm system

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

EF3 Deuel CountyEF2 Deuel CountyEF1 Grant CountyEF0 Hamlin County

Source: NOAA Storm Events Database, event 1027750. Narratives are written by the National Weather Service forecast office that issued the report.

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