EF0 tornado — Walworth County, South Dakota

EF0 tornado in Walworth County, South Dakota

Tornado May 22, 2010 · Walworth County, South Dakota

EF0

Rating

0.5 mi

Path length

50 yd

Path width

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

The first confirmed tornado touchdown was three miles south of Akaska. This was a brief touchdown with no damage reported.

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.

Other tornadoes from the same storm system

Source: NOAA Storm Events Database, event 235852. Narratives are written by the National Weather Service forecast office that issued the report.

EF0 tornado in Walworth County, South Dakota

What the National Weather Service wrote

The wider storm

Other tornadoes from the same storm system

Tornadoes near your address