TILLAMOOK COUNTY EMERGENCY MANAGEMENT ADVSIORY: Flood Watch from Sunday night 12/7/25 until Friday 12/12/25

* WHAT…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.

* WHERE…Portions of Oregon, including the following areas, Benton County Lowlands, Cascade Foothills of Marion and Linn Counties, Cascades of Lane County, Cascades of Marion and Linn Counties, Central Coast of Oregon, Central Columbia River Gorge I-84 Corridor, Central Oregon Coast Range, Central Oregon Coast Range Lowlands, Clackamas County Cascade Foothills, Clatsop County Coast, East Central Willamette Valley, East Portland Metro, Inner Portland Metro, Lane County Cascade Foothills, Lane County Lowlands, Linn County Lowlands, Lower Columbia River, North Oregon Cascades, North Oregon Coast Range, North Oregon Coast Range Lowlands, Outer Southeast Portland Metro, Portland West Hills and Chehalem Mountain, Tillamook County Coast, Tualatin Valley, Upper Hood River Valley, West Central Willamette Valley, West Columbia River Gorge I-84 Corridor and West Columbia River Gorge of Oregon above 500 ft and southwest Washington, including the following areas, Central Columbia River Gorge SR 14 Corridor, Cowlitz County Lowlands, East Clark County Lowlands, Inner Vancouver Metro, North Clark County Lowlands, South Washington Cascade Foothills, South Washington Cascades, South Washington Coast, West Columbia River Gorge SR 14 Corridor, Willapa Hills and Willapa and Wahkiakum Lowlands.

* WHEN…From late Sunday night, 12/7/25 through late Thursday night 12/11/25.

* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. 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.

* ADDITIONAL DETAILS… – A prolonged atmospheric river is expected to bring periods of heavy rain to northwest Oregon and southwest Washington Monday through Wednesday, with periods of lighter rain continuing Thursday into Friday. Rivers draining the coastal mountains and several Willamette Tributaries have the highest chance of flooding at 40 to 70%. Chances for flooding along the Willamette mainstem remains low at under 5%. – http://www.weather.gov/safety/flood

* AFFECTED AREAS: 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 … CASCADES OF LANE COUNTY … SOUTH WASHINGTON COAST … WILLAPA AND WAHKIAKUM LOWLANDS … WILLAPA HILLS … COWLITZ COUNTY LOWLANDS … NORTH CLARK COUNTY LOWLANDS … INNER VANCOUVER METRO … EAST CLARK COUNTY LOWLANDS … SOUTH WASHINGTON CASCADE FOOTHILLS … WEST COLUMBIA RIVER GORGE – SR 14 … CENTRAL COLUMBIA RIVER GORGE – SR 14 … SOUTH WASHINGTON CASCADES

Instructions:

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.