Apr 1, 2012
A stagnant long wave pattern featuring a broad trough off the Pacific Northwest Coast and upper-level ridge over the central United States resulted in a parade of moist storm systems tracking through the Inland Northwest culminating on April 1st. By this time, flooding was coming to an end on the Palouse River in the Palouse. Flood waters became an issue back on March 26th as the first in the series of wet storm systems moved through the area. Daily rainfall accumulations ranged between a qua
Source: NOAA National Weather Service Storm Events Database (event 374923). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Whitman County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.