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EF0 tornado in Owyhee County, Idaho

Tornado May 27, 2023 · Owyhee County, Idaho

EF0

Rating

5.0 mi

Path length

3 yd

Path width

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 3 yards (0.00 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

Photos on social media showed a land spout near Grandview. Reports state at least 3 of them formed in the same area, lasting around 5 minutes each.

The wider storm

Several reports of land spouts and funnel clouds occurred on May 26th, May 27th, and May 31st, 2023 near Star, ID and Twin Falls, ID. The radar signatures for both events were unremarkable, leading to the conclusion that these vortices were likely originating from low level and surface directional wind shear and cumulus congestus clouds on the fringes of larger thunderstorms.

Began near Grandview (42.9400, -116.1100).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

EF0 Ada County

Source: NOAA Storm Events Database, event 1100057. Narratives are written by the National Weather Service forecast office that issued the report.

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