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EF1 tornado in Hyde County, South Dakota

Tornado May 22, 2010 · Hyde County, South Dakota

EF1
Rating
1.6 mi
Path length
100 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 yards (0.06 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 for a short time in far northeast Hyde county hitting a farm. The tornado damaged or destroyed several large barns, eighteen grain bins, along with the garage on the home. A grain cart was also tipped over by the tornado along with twelve cattle being killed.

The wider storm

Several supercell thunderstorms developed along a very strong warm front and produced nine tornadoes from Akaska to Bowdle to Hecla. The largest of the tornadoes was an EF4 tornado which occurred near Bowdle. This tornado produced devastating damage in the Bowdle area. The other tornadoes ranged from EF0 to EF2 and caused extensive tree and building damage. Nearly one-hundred power poles were downed along with several high line towers leaving nearly a thousand customers without power. Also, very strong straight line winds and large hail up to the size of golfballs affected parts of the area causing some damage.

Began near Highmore Arpt (44.8700, -99.3900).

Other tornadoes from the same storm system

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

EF4 Walworth CountyEF2 Edmunds CountyEF2 Brown CountyEF1 Walworth CountyEF0 Walworth CountyEF0 Edmunds CountyEF0 Edmunds CountyEF0 Edmunds County

Source: NOAA Storm Events Database, event 236232. Narratives are written by the National Weather Service forecast office that issued the report.

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