National Weather Service Pendleton
Headline: FLOOD WARNINGS IN EFFECT...WINTER WEATHER ADVISORY IN EFFECT THURSDAY FOR THE EAST SLOPES OF THE WA CASCADES
Synopsis: Previous heavy rainfall and warm temperatures have caused rivers and streams to rise to above flood stage, and debris flows have been reported. Colder air spreading across WA state behind a cold front will limit snow melt runoff tonight and Thursday, but rivers are responding to runoff and reservoir releases with flood concerns through Thursday. The next system will bring snow to the East Slopes of the WA Cascades tonight and Thursday, mainly above 3000 feet.
Areas Impacted: FLOOD WARNINGS in effect for the Naches, Yakima, and Klickitat Rivers. FLOOD ADVISORY in effect for Yakima County and western Kittitas County. WINTER WEATHER ADVISORY FOR SNOW in effect from 3 AM to 3 PM Thursday for the East Slopes of the Washington Cascades where 3"-5" are expected, mainly north of White Pass and Highway 12.
Timing: Minor to moderate flooding will continue through Thursday. The Naches River at Naches is forecast to rise to near major flood stage tonight. Snow will develop after midnight along the East Slopes of the WA Cascades and continue through Thursday morning before tapering off to showers.
Please visit our website at www.weather.gov/pendleton for the latest watches, warnings, and advisories. You can always call the National Weather Service in Pendleton at 541-276-4493 for your decision support needs.