Thunderstorm Wind in Lincoln County, Montana

Thunderstorm Wind July 17, 2013 · Lincoln County, Montana

81 mph

Estimated gust (70 kt)

$5K

Damage as recorded

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

What the National Weather Service wrote

On the afternoon of Wednesday July 17th 2013, a right-moving supercell thunderstorm produced up to one inch hail with estimated winds near 80 mph just north of the Eureka airport in Montana. According to homeowners in the area, the mostly marble-sized hail flew sideways due to the hurricane force wind damaging roof shingles, siding, windows, paint and vehicles, and shredding vegetation. Trees toppled over in a northeast direction implying that winds could have been from the southwest.

The wider storm

A mid-level southwest 50 knot jet maximum combined with high moisture and very warm temperatures provided the prime environment for strong supercells. These cells brought both severe wind and hail.

Began near Roosville (48.9778, -115.0838).

Source: NOAA Storm Events Database, event 469431. Narratives are written by the National Weather Service forecast office that issued the report.

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