Flood Watch

Flood Watch
National Weather Service Portland OR
345 PM PST Sat Dec 6 2025

ORZ101>128-WAZ201>211-071200-
/O.CON.KPQR.FA.A.0003.251208T1200Z-251212T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-Portland West Hills
and Chehalem Mountain-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 Corridor-
Central Columbia River Gorge SR 14 Corridor-South Washington
Cascades-
Including the cities of Seaside, Newport, Cathlamet, Monroe, Long
Beach, Vernonia, Neskowin, Oregon City, Rockaway Beach,
Ridgefield, Forest Grove, Eagle Creek, Portland, Vida, Government
Camp, North Bonneville, Manzanita, Cascade Locks, Mill City, Mt.
St. Helens, Brush Prairie, Washougal, Sellwood, Clatskanie,
Brooklyn, Lake Oswego, Cannon Beach, Hood River, Woodburn,
Woodland, Salmon Creek, Estacada, Oakridge, Breitenbush Springs,
Toutle, Kelso, Eugene, Philomath, Happy Valley, Salem, Monmouth,
Harrisburg, Sandy, Santiam Pass, Jewell, Bennett Pass, Vancouver,
Beacon Rock SP, Evergreen, Stevenson, Brightwood, Welches,
Santiam Junction, Astoria, Corbett, Odell, Bonneville, Raymond,
Newberg, Florence, Hoskins, Rainier, Camas, Larch Mountain,
Creswell, Underwood, Silver Falls, Rhododendron, Sunset Summit,
Warrenton, Keizer, Indian Heaven Wilderness, Molalla, Sherwood,
Pacific City, Glenwood, Tigard, McKenzie Pass, Willamette Pass,
Gresham, Waldport, Lebam, Alsea, Longview, Horton, Stayton,
Silverton, Rockcreek, Cottage Grove, Sylvan Hill, Tokeland,
Albany, Cape Horn, St. Helens, Dallas, Lost Lake, Sheridan,
Detroit, Ocean Park, Necanicum, Grand Ronde Indian Reservation,
Scappoose, Boring, Brownsville, McKenzie Bridge, Yacolt,
Hillsboro, Lebanon, Wilson River Summit, Mapleton, Wilsonville,
Cherryville, Fairview, Grand Ronde, Mary`s Peak, Tillamook, Lake
Merwin, Valsetz, Battle Ground, La Center, Tombstone Summit,
Skyline Drive, Rosburg, Willapa, Corvallis, Rooster Rock,
Springfield, Parkdale, Chehalem Mountain, Alma, Kalama, Wyeth,
Multnomah Falls, Waldo Lake, Troutdale, Carson, Knappa,
Hockinson, Amboy, Naselle, Lincoln City, McMinnville, Castle
Rock, Timothy Lake, and Junction City
345 PM PST Sat Dec 6 2025

...FLOOD WATCH REMAINS IN EFFECT FROM LATE SUNDAY NIGHT THROUGH LATE
THURSDAY NIGHT...

* 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...Counties in Oregon: Clatsop, Columbia, Tillamook,
  Washington, Multnomah, Hood River, Yamhill, Clackamas, Polk,
  Marion, Lincoln, Benton, Linn, and Lane

Counties in Washington: Pacific, Wahkiakum, Cowlitz, Skamania, and
Clark

* WHEN...From late Sunday night through late Thursday night.

* 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 80%. Chances for flooding along
    the Willamette mainstem remains low at around 10%.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

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