Flood in Wheeler County, Oregon

Flood May 15, 2011 – May 18, 2011 · Wheeler County, Oregon

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

What the National Weather Service wrote

The John Day River near Service Creek crested at 15.2 on May 17th, which was 3.7 feet above flood stage.

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 and flash flooding. As the upper low brought colder air. late season heavy snow ended the episode in the Blue Mountains. Snowfall amounts in inches included Milkshakes Snotel (9) and High Ridge Snotel (7).

Began near Spray (44.8394, -119.6562).

Source: NOAA Storm Events Database, event 312872. Narratives are written by the National Weather Service forecast office that issued the report.

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