Apr 6, 2011
A stationary trough of low pressure off the Pacific Northwest Coast steered a deep fetch of subtropical moisture into the Idaho Panhandle which persisted from the end of March through April 7th bringing several rounds of heavy rain. Mild temperatures and breezy winds accompanying the subtropical moisture feed resulted in excessive mid-elevation snowmelt. The combination of heavy rainfall and excessive runoff resulted in sharp rises in most basins within the Idaho Panhandle. In addition, satura
Source: NOAA National Weather Service Storm Events Database (event 293670). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Boundary County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.