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WGUS66 KPQR 082335
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Flood Watch
National Weather Service Portland OR
335 PM PST Mon Dec 8 2025

ORZ101>128-WAZ201>211-091430-
/O.CON.KPQR.FA.A.0003.000000T0000Z-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 Rockcreek, Newberg, Waldo Lake, Lebanon,
Lake Merwin, Oregon City, Hoskins, Washougal, Sandy, Monmouth,
Scappoose, Castle Rock, Evergreen, St. Helens, Oakridge,
Vancouver, Seaside, Bennett Pass, Multnomah Falls, Estacada,
Mary`s Peak, Molalla, McKenzie Bridge, Stayton, Astoria,
Necanicum, Alsea, Santiam Junction, Brooklyn, Toutle, Skyline
Drive, McMinnville, Pacific City, Hillsboro, Lake Oswego, Cape
Horn, Clatskanie, Philomath, Stevenson, Ridgefield, Eugene,
Horton, Rainier, Portland, Camas, Lebam, Yacolt, Eagle Creek,
Hockinson, Manzanita, Glenwood, Chehalem Mountain, Vida,
Neskowin, Grand Ronde, Brownsville, Breitenbush Springs,
Fairview, Odell, Lost Lake, Tokeland, Cathlamet, Mt. St. Helens,
Wilsonville, Tillamook, Raymond, Waldport, North Bonneville,
Santiam Pass, Wilson River Summit, Tigard, Tombstone Summit, Hood
River, Mapleton, Larch Mountain, Creswell, Rooster Rock,
Springfield, Long Beach, Kalama, La Center, Valsetz, Corvallis,
Salmon Creek, Cottage Grove, Sherwood, Parkdale, Grand Ronde
Indian Reservation, Mill City, Sheridan, Woodburn, Woodland,
Welches, Cascade Locks, Corbett, Salem, Keizer, Florence, Happy
Valley, Silverton, Beacon Rock SP, Government Camp, Bonneville,
Underwood, Sylvan Hill, Timothy Lake, Willapa, Longview, Albany,
Jewell, Sunset Summit, Alma, Dallas, Willamette Pass, Carson,
Silver Falls, Cherryville, Boring, Brightwood, Naselle, Sellwood,
Cannon Beach, Monroe, Forest Grove, Detroit, Indian Heaven
Wilderness, Battle Ground, Gresham, Newport, Vernonia, Rosburg,
Junction City, Harrisburg, Rockaway Beach, Kelso, Brush Prairie,
Ocean Park, Wyeth, Knappa, Troutdale, McKenzie Pass, Warrenton,
Rhododendron, Lincoln City, and Amboy
335 PM PST Mon Dec 8 2025

...FLOOD WATCH REMAINS IN EFFECT 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: Benton, Clackamas, Clatsop, Columbia,
  Hood River, Lane, Lincoln, Linn, Marion, Multnomah, Polk,
  Tillamook, Washington, and Yamhill. Counties in Washington: Clark,
  Cowlitz, Pacific, Skamania, and Wahkiakum.

* WHEN...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. This weather system will
    result in an increased risk for flooding. Additional forecast
    rain amounts from 4 PM Monday through 4 AM Thursday range
    from 2.5 to 5 inches in the Cowlitz Valley, Lower Columbia,
    Portland/Vancouver metro and northern Willamette Valley, 1.5
    to 2.5 inches in the central Willamette Valley, and 0.75-1.5
    inches in the southern Willamette Valley. Forecast rain
    amounts reach 6 to 12 inches in the Cascades, Cascade
    foothills, Coast Range and the coast, except 1.5-3.5 inches
    from Florence to Newport and in areas of higher terrain in
    Lane County. Rivers draining the coastal mountains and
    several Willamette Tributaries have a 50 to 70% chance of
    reaching minor flood stage or higher. The Pudding River at
    Aurora and Johnson Creek at Sycamore have an 80% chance of
    reaching minor flood stage or higher. Chances for flooding
    along the Willamette mainstem remains low at 5-15%. Urban
    flooding is possible and water on roadways will increase the
    risk of hydroplaning and car accidents. Landslides in areas
    of steep terrain will be possible due to saturated soils, as
    well as debris flows over recently burned areas.
  - 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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