Flood — Grant, Oregon

2011-05-15 · near Monument Arpt, Grant, Oregon

Event narrative

The North Fork of the John Day River at Monument crested at 15.8 feet which was 1.8 feet above flood stage. Flooding was also observed in Kimberly.

Wider weather episode

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).

View location on OpenStreetMap → (44.8647, -119.3939)

Source: NOAA Storm Events Database, event_id 312525. Narrative written by the NWS forecast office that issued the report.