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Flood Watch


Flood Watch
National Weather Service Seattle WA
427 PM PST Sun Dec 7 2025

.An atmospheric river moving into the region on Monday will increase
the threat of river flooding this week.

WAC009-027-029-031-033-035-041-045-053-055-057-061-067-073-081330-
/O.CON.KSEW.FA.A.0012.251208T1200Z-251213T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clallam-Grays Harbor-Island-Jefferson-King-Kitsap-Lewis-Mason-
Pierce-San Juan-Skagit-Snohomish-Thurston-Whatcom-
Including Bellingham, Langley, Lacey, Silverdale, Sedro-Woolley,
Anacortes, Marysville, Shelton, Mount Vernon, Bremerton, Friday
Harbor, Seattle, Aberdeen, Everett, Chehalis, Lynnwood, Tacoma,
Sequim, Freeland, Fords Prairie, Port Townsend, Tumwater,
Burlington, Olympia, Edmonds, and Hoquiam
427 PM PST Sun Dec 7 2025

...FLOOD WATCH REMAINS IN EFFECT FROM 4 AM PST MONDAY THROUGH FRIDAY
AFTERNOON...

* WHAT...Flooding caused by excessive rainfall continues to be
  possible.

* WHERE...Portions of northwest and west central Washington,
  including the following counties, in northwest Washington,
  Clallam, Grays Harbor, Island, Jefferson, Kitsap, Mason, San Juan,
  Skagit and Whatcom. In west central Washington, King, Lewis,
  Pierce, Snohomish and Thurston.

* WHEN...From 4 AM PST Monday through Friday afternoon.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
  - An atmospheric river moving into the region early this week
    will bring periods moderate to heavy rain to the region.
    Sharp rises will be possible on area rivers, especially those
    flowing off the Olympics and Cascades.

    Urban and small stream flooding is possible for areas with
    poor drainage.

    Saturated soils will bring increased potential for landslides
    and debris flows on burn scars.

  - 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.

&&

$$

Flood Watch
National Weather Service Portland OR
317 PM PST Sun Dec 7 2025

ORZ101>128-WAZ201>211-081215-
/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 Detroit, Boring, Government Camp,
Longview, Washougal, Ocean Park, Vancouver, Timothy Lake,
McKenzie Pass, Wilson River Summit, Carson, Lake Merwin,
Waldport, North Bonneville, Vernonia, Amboy, Larch Mountain,
Scappoose, Rockcreek, Brooklyn, La Center, Tokeland, Hockinson,
Lebam, Santiam Junction, Junction City, Toutle, Florence,
Gresham, Mary`s Peak, Naselle, Eugene, Grand Ronde, Warrenton,
Brightwood, Indian Heaven Wilderness, Molalla, Neskowin, Welches,
Ridgefield, Hoskins, Woodburn, Odell, Underwood, Wyeth, Sellwood,
Stevenson, Estacada, Monmouth, Corvallis, Rockaway Beach, Rooster
Rock, Mill City, Cape Horn, Sylvan Hill, Cathlamet, Manzanita,
McKenzie Bridge, Horton, Cascade Locks, Silverton, Cottage Grove,
Dallas, Bonneville, Brownsville, Rosburg, Harrisburg, Knappa,
Oregon City, Monroe, Skyline Drive, Troutdale, Newport, Kalama,
Sandy, Salem, Vida, Cherryville, Sherwood, Albany, Grand Ronde
Indian Reservation, Cannon Beach, Seaside, Alsea, Stayton,
Springfield, Silver Falls, Lincoln City, Breitenbush Springs, St.
Helens, Tombstone Summit, Fairview, Brush Prairie, Rainier,
Portland, Chehalem Mountain, Waldo Lake, Happy Valley, Creswell,
Forest Grove, Bennett Pass, Yacolt, Santiam Pass, Multnomah
Falls, Oakridge, Sheridan, Sunset Summit, Keizer, Philomath,
Kelso, McMinnville, Hillsboro, Lost Lake, Corbett, Tigard,
Parkdale, Raymond, Rhododendron, Newberg, Mt. St. Helens,
Clatskanie, Eagle Creek, Tillamook, Hood River, Glenwood, Beacon
Rock SP, Willapa, Lebanon, Astoria, Lake Oswego, Evergreen,
Salmon Creek, Mapleton, Camas, Jewell, Castle Rock, Alma,
Valsetz, Long Beach, Woodland, Necanicum, Pacific City, Battle
Ground, Willamette Pass, and Wilsonville
317 PM PST Sun Dec 7 2025

...FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT 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...From late tonight 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 less than 10%. Urban
    flooding is possible and water on roadways will increase the
    risk of hydroplaning. Landslides in areas of steep terrain
    will be possible, 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.

&&

$$

19

Flood Watch
National Weather Service Spokane WA
1230 PM PST Sun Dec 7 2025

WAC007-082030-
/O.NEW.KOTX.FA.A.0005.251208T1500Z-251209T1200Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chelan-
Including the cities of Plain, Cashmere, Leavenworth, Entiat,
Wenatchee, Chelan, and Manson
1230 PM PST Sun Dec 7 2025

...FLOOD WATCH IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY
NIGHT...

* WHAT...Flooding caused by rain and snowmelt is possible.

* WHERE...Chelan County.

* WHEN...From Monday morning through late Monday night.

* IMPACTS...Excessive runoff may result in flooding of smaller
  rivers, creeks, streams, and other low-lying and flood-prone
  locations. People, structures, and roads located below steep
  slopes and near recently burned areas may be at risk from rock and
  mud slides.

* ADDITIONAL DETAILS...
  - An atmospheric river moving into the Pacific Northwest will
    bring moderate to heavy rainfall to western and central
    Chelan County. Rising snow levels will lead to a rain on snow
    event for elevations below 7000 feet. Forecasted 24 hour rain
    totals of 1.5 to 4 inches in addition to snowmelt will bring
    an increased risk for flooding.
  - 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.

&&

$$

VMT

Flood Watch
National Weather Service Missoula MT
1214 PM MST Sun Dec 7 2025

IDC035-049-081915-
/O.NEW.KMSO.FA.A.0009.251209T0000Z-251211T1200Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clearwater-Idaho-
1214 PM MST Sun Dec 7 2025 /1114 AM PST Sun Dec 7 2025/

...FLOOD WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH THURSDAY
MORNING...

* WHAT...Flooding caused by rain and snowmelt is possible.

* WHERE...Clearwater and Idaho County, Idaho.

* WHEN...From Monday afternoon through Thursday morning.

* IMPACTS...Creeks and streams may rise out of their banks. Flooding
  may occur in poor drainage and urban areas. Storm drains and
  ditches may become clogged with debris. People, structures, and
  roads located below steep slopes, in canyons, and near the mouths
  of canyons may be at risk from landslides.

* ADDITIONAL DETAILS...
  - A prolonged atmospheric river is expected to bring periods of
    heavy rain to Idaho and Clearwater Counties, Monday night
    through Thursday. Rising snow levels will lead to a rain on
    snow event for elevations below 7,000 feet Monday night into
    Tuesday morning. The precipitation rates will briefly
    decrease Tuesday afternoon, before a second surge of moisture
    arrives Tuesday night into Thursday morning. By Thursday,
    significant precipitation totals are forecast, with 2 to 4
    inches in the valleys and 4 to 8 inches in the mountains,
    with locally higher totals over mountain crests. Landslides
    in areas of steep terrain and minor flooding in urban and
    poor drainage areas is possible.
  - https://www.weather.gov/mso/hydrology

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.

&&

$$

Flood Watch
National Weather Service Missoula MT
1214 PM MST Sun Dec 7 2025

MTC061-081915-
/O.NEW.KMSO.FA.A.0009.251209T0000Z-251211T1200Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mineral-
1214 PM MST Sun Dec 7 2025

...FLOOD WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH THURSDAY
MORNING...

* WHAT...Flooding caused by rain and snowmelt is possible.

* WHERE...Mineral County, Montana.

* WHEN...From Monday afternoon through Thursday morning.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas. Storm drains
  and ditches may become clogged with debris.

* ADDITIONAL DETAILS...
  - A prolonged atmospheric river is expected to bring periods of
    heavy rain to Mineral County, Monday night through Thursday.
    Rising snow levels will lead to a rain on snow event for
    elevations below 7,000 feet Monday night into Tuesday
    morning. The precipitation rates will briefly decrease
    Tuesday afternoon, before a second surge of moisture arrives
    Tuesday night into Thursday morning. By Thursday, significant
    precipitation totals are forecast, with 1 to 3 inches in the
    valleys and 3 to 6 inches in the mountains, with locally
    higher totals over mountain crests. Landslides in areas of
    steep terrain and  minor flooding in urban and poor drainage
    areas is possible.
  - https://www.weather.gov/mso/hydrology

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.

&&

$$

AL

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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