Thunderstorm Wind in Walla Walla County, Washington

Thunderstorm Wind May 14, 2011 · Walla Walla County, Washington

60 mph

Estimated gust (52 kt)

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

What the National Weather Service wrote

Microburst like wind gust blew trampoline over and kicked up several pieces of debris. Several tree limbs 1 to 3 inches in diameter have fallen.

The wider storm

An upper level low pressure system moved over the Pacific Northwest. Moist and unstable conditions ahead of the low triggered widespread thunderstorms with heavy rainfall and isolated large hail. This combined with the abundant spring snow-pack and wet ground to cause flooding. A 75 yard wide mudslide closed Highway 410 at milepost 87. As the upper low brought colder air. late season heavy snow ended the episode in the Blue Mountains. Snowfall amounts in inches included Touchet Snotel (7).

Began near Villard Jct (46.1900, -118.9900).

Source: NOAA Storm Events Database, event 312814. Narratives are written by the National Weather Service forecast office that issued the report.

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