At 1:10 a.m. on Saturday, the National Weather Service released a flood watch valid from Monday 4 a.m. until Friday 4 a.m. for Clatsop County Coast, Tillamook County Coast, Central Coast of Oregon, North Oregon Coast Range Lowlands, Central Oregon Coast Range Lowlands, North Oregon Coast Range, Central Oregon Coast Range, Lower Columbia River, Tualatin Valley, West Hills and Chehalem Mountains, Inner Portland Metro, East Portland Metro, Outer Southeast Portland Metro, West Central Willamette Valley, East Central Willamette Valley, Benton County Lowlands, Linn County Lowlands, Lane County Lowlands, West Columbia River Gorge of Oregon above 500 ft, West Columbia River Gorge I-84 Corridor, Upper Hood River Valley, Central Columbia River Gorge I-84 Corridor, Clackamas County Cascade Foothills, Cascade Foothills of Marion and Linn counties, Lane County Cascade Foothills, North Oregon Cascades, Cascades of Marion and Linn counties and Cascades of Lane County.

The weather service describes, "River and urban flooding caused by excessive rainfall is possible. Landslides possible in areas of steep terrain, and debris flows possible over recently burned areas."

News Source : https://www.oregonlive.com/weather-alerts/2025/12/flood-watch-for-oregon-from-monday-to-friday-caused-by-significant-rainfall.html