Spokane, Washington – A sudden burst of heavy rain over the Swawilla Burn Scar is triggering dangerous flash flooding in eastern Washington, putting Keller and the Colville Reservation on high alert Thursday. According to the National Weather Service, Doppler radar detected intense thunderstorms dumping excessive rainfall on the burned terrain, with flash floods already reported or expected to begin at any moment.
Northern Lincoln, southeastern Okanogan, and southwestern Ferry counties are under the Flash Flood Warning until 2 p.m. Thursday. Authorities warn that runoff over steep, unstable slopes is likely to unleash mudslides, rockslides, and flooding—especially in and below the Swawilla Burn Scar. Key trouble spots include Mt. Tolman Road, where debris could block travel and damage property.
Residents and motorists near Keller should avoid low-lying roads and be ready to move to higher ground. Stay away from burn scars, ravines, and drainages until conditions improve. Keep phones charged and check for emergency alerts, as further warnings may be issued this afternoon.
This Flash Flood Warning remains active through Thursday afternoon. More thunderstorms could spark renewed flooding into the evening.