Thunderstorm Wind in Lemhi County, Idaho

Thunderstorm Wind August 1, 2013 · Lemhi County, Idaho

49 mph

Estimated gust (43 kt)

$10K

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

A trained spotter in Salmon, Idaho reported trees down over roadways, power lines down in three different areas with power outages and a roof over a patio blew off.

The wider storm

A 40 to 50 knot mid-level southwest jet maximum combined with unstable conditions over Lemhi County helped initiate a large supercell thunderstorm that brought wind and hail. As the main upper low over Washington and Oregon pushed eastward, thunderstorms developed over Idaho County. One of these storms brought heavy rain that triggered flash flooding over the Sheep Fire Burn area.

Began near Salmon (45.1800, -113.9000).

Source: NOAA Storm Events Database, event 472138. Narratives are written by the National Weather Service forecast office that issued the report.

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