Jan 18, 2011
A large Pacific weather system became established in mid January that produced copious amounts of rainfall with unseasonably warm conditions in parts of Washington. The heavy rainfall combined with snowmelt caused rapid runoff with 4 rivers and 7 different warning points reaching flood stage. Flood warnings were first issued on the morning of January 15 and the last flood warning ended on January 21st.
Source: NOAA National Weather Service Storm Events Database (event 273420). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Benton County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.