May 15, 2011
A wet spring season resulted in saturated soils across the Inland Northwest. Rivers, small streams, and creeks began to rise as warming temperatures on May 13th and 14th melted mountain snowpack across the east slopes of the northern Cascades and Northeast Mountains. Warm and dry weather transitioned to cooler but considerably wetter conditions over the weekend May 14th and 15th. An upper level low pumped a considerable amount of moisture into the region with an extended period of heavy rainf
Source: NOAA National Weather Service Storm Events Database (event 301533). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Chelan County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.