A Flood Watch has been issued by the National Weather Service for the Central Coast and Central Coast Range, and most of Northwest Oregon and Southwest Washington. It is in effect from Thursday morning through Friday evening. Heavy rain Wednesday night through Thursday night in the Coast Range and Willapa Hills, with totals of 4-8 inches, will cause sharp rises on rivers and creeks draining the Coast Range and Willapa Hills. Rivers of concern include the Grays in Wahkiakum County, the lower Nehalem and Wilson in Tillamook County, the Siletz River in Lincoln County, the upper Tualatin in Washington County, the Luckiamute river in Polk County, and the Marys in Benton County. If flooding occurs, it is expected to be minor, primarily impacting fields and low-lying property and secondary roads vulnerable to flooding in low areas.
UPDATE: Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides.
A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for flood warnings if flooding becomes more certain. Those living in areas prone to flooding should be prepared to take action should flooding develop.