Watches, Warnings & Advisories



4 products issued by NWS for: Portland OR

Wind Advisory

URGENT - WEATHER MESSAGE
National Weather Service Portland OR
334 AM PST Tue Dec 9 2025

ORZ104>115-123-WAZ202>208-091245-
/O.EXP.KPQR.WI.Y.0004.000000T0000Z-251209T1200Z/
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-Clackamas County Cascade Foothills-
Willapa and Wahkiakum Lowlands-Willapa Hills-Cowlitz County
Lowlands-North Clark County Lowlands-Inner Vancouver Metro-East
Clark County Lowlands-South Washington Cascade Foothills-
Including the cities of Silverton, Evergreen, Monmouth,
Wilsonville, Woodburn, Tigard, Happy Valley, Cathlamet, Sylvan
Hill, Alma, Hillsboro, Rockcreek, Gresham, Knappa, Dallas,
Boring, Portland, Brooklyn, Battle Ground, Washougal, Grand Ronde
Indian Reservation, La Center, Salmon Creek, Lebam, Rhododendron,
Hockinson, Cherryville, Willapa, Troutdale, Fairview, Estacada,
Ridgefield, Scappoose, Eagle Creek, Kelso, Sandy, Jewell, Camas,
Toutle, Necanicum, Skyline Drive, St. Helens, Clatskanie, Amboy,
Mary`s Peak, Newberg, Grand Ronde, McMinnville, Vernonia,
Rainier, Brightwood, Brush Prairie, Vancouver, Castle Rock,
Woodland, Lake Oswego, Keizer, Alsea, Sellwood, Molalla,
Longview, Sunset Summit, Sherwood, Salem, Oregon City, Glenwood,
Valsetz, Forest Grove, Stayton, Welches, Sheridan, Horton, Lake
Merwin, Rosburg, Yacolt, Hoskins, Chehalem Mountain, Mapleton,
Wilson River Summit, and Kalama
334 AM PST Tue Dec 9 2025

...WIND ADVISORY WILL EXPIRE AT 4 AM PST EARLY THIS MORNING...

Wind gusts have decreased well below wind advisory criteria,
therefore the Wind Advisory will be allowed to end at 4 AM Tuesday.

$$

For more information from the National Weather Service visit
www.weather.gov/portland

12




Flood Advisory

Flood Advisory
National Weather Service Portland OR
318 AM PST Tue Dec 9 2025

ORC051-067-WAC011-091800-
/O.NEW.KPQR.FA.Y.0008.251209T1118Z-251209T1800Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Multnomah OR-Washington OR-Clark WA-
318 AM PST Tue Dec 9 2025

...FLOOD ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING...

* WHAT...Urban and small stream flooding caused by excessive
  rainfall is expected.

* WHERE...Portions of northwest Oregon, including the following
  counties, Multnomah and Washington and southwest Washington,
  including the following county, Clark.

* WHEN...Until 1000 AM PST Tuesday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
  Water over roadways.

* ADDITIONAL DETAILS...
  - At 318 AM PST, Gauge reports indicated heavy rain. This will
    cause urban and small stream flooding. Rapid river rises will
    cause minor flooding in the advisory area. Between 1.5 and
    2.5 inches of rain have fallen.
  - Additional rainfall amounts of 0.5 to 1 inch are expected
    over the area. This additional rain will result in minor
    flooding.
  - Some locations that will experience flooding include...
    Hillsboro, Washougal, Portland Downtown, Vancouver Downtown,
    Portland, Vancouver, Gresham, Beaverton, Tigard, Lake Oswego,
    Tualatin, Forest Grove, Milwaukie, Wilsonville, Camas,
    Troutdale, Maywood Park, Rivergrove, West Haven-Sylvan and
    West Slope.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 4533 12274 4535 12297 4540 12303 4540 12311
      4543 12315 4550 12311 4564 12289 4568 12279
      4569 12270 4570 12256 4566 12243 4562 12236
      4558 12237 4556 12233 4552 12230 4546 12232
      4546 12264 4546 12266 4543 12265 4543 12274


$$

12




Flood Warning

Flood Statement
National Weather Service Portland OR
407 PM PST Mon Dec 8 2025

...The Flood Warning is extended for the following rivers in
Washington...

  Grays River at Covered Bridge near Rosburg affecting Wahkiakum
  County.

...The Flood Warning continues for the following rivers in Oregon...

  Wilson River near Tillamook affecting Tillamook County.

  Johnson Creek at Sycamore affecting Clackamas and Multnomah
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Motorists should not attempt to drive around barricades or drive
through flooded areas.

Additional information is available at www.weather.gov.

The next statement will be issued by 4 AM Tuesday morning.late
tonight at 415 AM PST.

&&

ORC005-051-091215-
/O.EXT.KPQR.FL.W.0012.251209T1510Z-251210T0900Z/
/SYCO3.1.ER.251209T1510Z.251209T1800Z.251209T2026Z.NO/
407 PM PST Mon Dec 8 2025

...FLOOD WARNING NOW IN EFFECT FROM TUESDAY MORNING TO EARLY
WEDNESDAY MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Johnson Creek at Sycamore.

* WHEN...From Tuesday morning to early Wednesday morning.

* IMPACTS...Above 11.0 feet, minor flooding begins along Johnson
  Creek between SE 92nd Street to SE 122nd Street and between
  Johnson Creek and SE Harold Street.

* ADDITIONAL DETAILS...
  - At 3:30 PM PST Monday the stage was 4.7 feet.
  - Bankfull stage is 10.0 feet.
  - Forecast...The river will rise above flood stage late
    tonight, then crest near 12 feet early Tuesday morning before
    falling below flood stage by late Tuesday evening. There is a
    25% chance the river will crest above Moderate flood stage
    (13.0 feet) and a 10% chance of cresting above Major flood
    stage (14.0 feet) this week.
  - Flood stage is 11.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4546 12262 4547 12262 4546 12259 4548 12256
      4548 12251 4549 12248 4549 12245 4548 12245
      4548 12248 4547 12251 4547 12256 4545 12259


$$

36




Flood Watch

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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