Hazard Report Provided By forecast.weather.gov

Special Weather Statement
National Weather Service Seattle WA
434 AM PST Tue Dec 9 2025

WAZ001-301>333-101900-
San Juan County-Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and Northern King Counties-
Cascades of Southern King County-
Cascades of Pierce and Lewis Counties-
Foothills and Valleys of the North Cascades-
Foothills and Valleys of Snohomish and Northern King Counties-
Foothills and Valleys of Central King County-
Foothills and Valleys of Pierce and Southern King Counties-
Foothills and Valleys of Thurston and Lewis Counties-
Lowlands of Western Whatcom County-
Lowlands of Western Skagit and Northwestern Snohomish Counties-
Downtown Everett / Marysville Area-
Shoreline / Lynnwood / South Everett Area-Eastside-City of Seattle-
Lowlands of Pierce and Southern King Counties-
Olympia and Southern Puget Sound-
Lowlands of Lewis and Southern Thurston Counties-
Middle Chehalis River Valley-Willapa and Black Hills-
Southern Hood Canal-Northern Hood Canal-Eastern Kitsap County-
Port Townsend Area-Eastern Strait of Juan de Fuca-
Western Strait of Juan de Fuca-Lake Crescent Area Including US 101-
Olympics-Foothills of the Western and Southern Olympic Peninsula-
Northern Washington Coast-Grays Harbor County Coast-
Lower Chehalis River Valley-Island County-
434 AM PST Tue Dec 9 2025

...HEAVY RAINFALL THIS WEEK WILL LEAD TO AN INCREASED THREAT OF
LANDSLIDES IN WESTERN WASHINGTON...

Rainfall of up to 8 inches over the past several days has increased
antecedent soil moisture to high levels across western Washington.
Heavy rainfall of 1 to 5 inches across the lowlands and 4 to 10
inches over the Olympics and Cascades is expected through late
Wednesday. Wet and unsettled conditions are also favored to continue
through the rest of the week. This amount of rain will put extra
pressure on soil instability, leading to an increased threat of
landslides and debris flows, especially from recent burned areas.

A mudslide has already been reported along I-90 Monday evening near
North Bend, causing closures. More landslides are possible.

Areas most susceptible to landslides debris flows under these
conditions are steep coastal bluffs, other steep hillsides or
road cuts, and recent burned areas. A diminishing threat of
landslides and debris flows will continue for several days after
the rain ends.

For more information about current conditions, visit
www.weather.gov/seattle, select Hydrology, and then scroll down
for the links to the landslide information pages.

For more information on landslides, visit the website for the
Washington State Department of Natural Resources landslide
geologic hazards at: http://bit.ly/2mtA3wn

$$

www.weather.gov/seattle

Flood Statement
National Weather Service Seattle WA
427 PM PST Tue Dec 9 2025

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

  Tolt River Above Carnation affecting King County.

  Chehalis River At Centralia affecting Lewis County.

  Green River Near Auburn affecting King County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Additional information is available at www.weather.gov.

The next statement will be issued by late tonight at 1230 AM PST.

&&

WAC041-100830-
/O.EXT.KSEW.FL.W.0043.251210T1154Z-251211T0420Z/
/CENW1.1.ER.251210T1154Z.251210T1800Z.251210T1920Z.NO/
427 PM PST Tue Dec 9 2025

...FLOOD WARNING NOW IN EFFECT FROM LATE TONIGHT TO TOMORROW
EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Chehalis River at Centralia.

* WHEN...From late tonight to tomorrow evening.

* IMPACTS...At 168.5 feet, the Chehalis River in Lewis County will
  cause shallow flooding of farm lands and some roads. Roads include
  Airport Rd, Florida Ave in Chehalis and Military Rd in Centralia.
  This stage corresponds roughly to a Phase 1 flood in the Lewis
  County flood warning system.

* ADDITIONAL DETAILS...
  - At 4:00 PM PST Tuesday the stage was 167.2 feet.
  - Flood stage is 168.5 feet.
  - Forecast...The river is expected to rise above flood stage
    late tonight to a crest of 168.6 feet late tomorrow morning.
    It will then fall below flood stage late tomorrow morning.
  - Flood History...No available flood history.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4657 12309 4670 12310 4678 12313 4681 12289
      4672 12286 4658 12285


$$

Flood Statement
National Weather Service Seattle WA
259 PM PST Tue Dec 9 2025

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

  Puyallup River At Puyallup affecting Pierce County.

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

  South Prairie Creek at South Prairie affecting Pierce County.

  Puyallup River Near Orting affecting Pierce County.

  Nisqually River Near National affecting Pierce and Lewis Counties.

  Chehalis River At Porter affecting Grays Harbor County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Additional information is available at www.weather.gov.

The next statement will be issued by this evening at 1100 PM PST.

&&

WAC041-053-100700-
/O.EXT.KSEW.FL.W.0021.000000T0000Z-251212T1719Z/
/NISW1.3.ER.251209T0318Z.251211T0000Z.251212T0819Z.NO/
259 PM PST Tue Dec 9 2025

...FLOOD WARNING NOW IN EFFECT UNTIL LATE FRIDAY MORNING...

* WHAT...Major flooding is forecast.

* WHERE...Nisqually River near National.

* WHEN...Until late Friday morning.

* IMPACTS...At 15,000.0 cfs, the Nisqually River will cause major
  flooding along the upper reaches of the river from Mt Rainier
  National Park downstream to Alder Lake. Deep and swift flood
  waters will inundate roads...pasture lands...and farms. The river
  will likely overtop some levees.   Flooding will occur all along
  the river including headwaters...tributaries...and other streams
  within and near the Nisqually River Basin.

* ADDITIONAL DETAILS...
  - At 2:00 PM PST Tuesday the flow was 4,900.0 cfs.
  - Flood flow is 8,000.0 cfs.
  - Forecast...The river is expected to rise above flood stage
    late this evening to a crest of 16,912.5 cfs tomorrow
    afternoon. It will then fall below flood stage early Friday
    morning.
  - Flood History...This crest compares to a previous crest of
    16,500.0 cfs on 11/29/1995.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4674 12165 4664 12189 4670 12227 4683 12213
      4681 12198 4683 12187


$$

Flood Statement
National Weather Service Seattle WA
153 PM PST Tue Dec 9 2025

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

  Cowlitz River At Packwood affecting Lewis County.

  Newaukum River Near Chehalis affecting Lewis County.

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

  Cowlitz River At Randle affecting Lewis County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Additional information is available at www.weather.gov.

The next statement will be issued by this evening at 1000 PM PST.

&&

WAC041-100600-
/O.EXT.KSEW.FL.W.0017.000000T0000Z-251212T1945Z/
/NEWW1.2.ER.251209T0453Z.251211T0000Z.251212T1045Z.NR/
153 PM PST Tue Dec 9 2025

...FLOOD WARNING NOW IN EFFECT UNTIL LATE FRIDAY MORNING...

* WHAT...Moderate flooding is occurring and moderate flooding is
  forecast.

* WHERE...Newaukum River near Chehalis.

* WHEN...Until late Friday morning.

* IMPACTS...At 204.5 feet, deep and hazardous flood waters will
  inundate many roads and residential and commercial areas along the
  Newaukum River and its forks.  Impacted roadways and surrounding
  areas include SR 508, Jackson Hwy. and Tune, Rush, Sommerville,
  Griel, Hamilton, Tauscher, Guerrier, Kirkland, Macomber, Rice,
  Senn, Lucas Creek, Middle Fork and North Fork, Bishop, Shorey,
  Labree, Gish, Yates Roads.  A stage of 204.5 feet on the Newaukum
  roughly corresponds to Phase 3 flood in the Lewis County flood
  system.

* ADDITIONAL DETAILS...
  - At 12:45 PM PST Tuesday the stage was 205.1 feet.
  - Flood stage is 202.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 12:45 PM PST Tuesday was 205.4 feet.
  - Forecast...The river is expected to rise to a crest of 205.4
    feet tomorrow afternoon. It will then fall below flood stage
    early Friday morning.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4657 12248 4652 12289 4662 12305 4675 12295
      4668 12286 4676 12264


$$

Flood Statement
National Weather Service Seattle WA
153 PM PST Tue Dec 9 2025

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

  Cowlitz River At Packwood affecting Lewis County.

  Newaukum River Near Chehalis affecting Lewis County.

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

  Cowlitz River At Randle affecting Lewis County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Additional information is available at www.weather.gov.

The next statement will be issued by this evening at 1000 PM PST.

&&

WAC041-100600-
/O.EXT.KSEW.FL.W.0019.000000T0000Z-251212T0532Z/
/PACW1.3.ER.251209T0541Z.251210T1800Z.251211T2032Z.NR/
153 PM PST Tue Dec 9 2025

...FLOOD WARNING NOW IN EFFECT UNTIL LATE THURSDAY EVENING...

* WHAT...Major flooding is forecast. This approaches the flood of
  record.

* WHERE...Cowlitz River at Packwood.

* WHEN...Until late Thursday evening.

* IMPACTS...At 13.0 feet, the Cowlitz River will cause severe near
  record flooding from the upper reaches of the river downstream
  through Packwood...with dangerous inundation of residential and
  commercial areas...roads...and farms throughout the flood plain.
  Flooding will occur all along the river including headwaters...
  tributaries...and other streams within and near the Cowlitz River
  Basin.

* ADDITIONAL DETAILS...
  - At 1:00 PM PST Tuesday the stage was 6.6 feet.
  - Flood stage is 10.5 feet.
  - Forecast...The river is expected to rise above flood stage
    just after midnight tonight to a crest of 13.7 feet late
    tomorrow morning. It will then fall below flood stage early
    Thursday afternoon.
  - Flood History...This crest compares to a previous crest of
    13.5 feet on 11/23/1959.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4664 12146 4653 12160 4646 12173 4660 12182
      4667 12173 4674 12164


$$

Flood Statement
National Weather Service Seattle WA
153 PM PST Tue Dec 9 2025

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

  Cowlitz River At Packwood affecting Lewis County.

  Newaukum River Near Chehalis affecting Lewis County.

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

  Cowlitz River At Randle affecting Lewis County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Additional information is available at www.weather.gov.

The next statement will be issued by this evening at 1000 PM PST.

&&

WAC041-100600-
/O.CON.KSEW.FL.W.0020.000000T0000Z-000000T0000Z/
/RAWW1.3.ER.251209T0703Z.251211T1200Z.000000T0000Z.NO/
153 PM PST Tue Dec 9 2025

...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Major flooding is occurring and major flooding is forecast.

* WHERE...Cowlitz River at Randle.

* WHEN...Until further notice.

* IMPACTS...At 22.0 feet, the Cowlitz River will cause major
  flooding from the vicinity of Randle downstream through Riffe
  Lake...with dangerous inundation of many roads including US
  Highway 12...residential and commercial areas...and farms.
  Flooding will occur all along the river including headwaters...
  tributaries...and other streams within and near the Cowlitz River
  Basin.

* ADDITIONAL DETAILS...
  - At 1:45 PM PST Tuesday the stage was 23.0 feet.
  - Flood stage is 18.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 1:45 PM PST Tuesday was 23.0 feet.
  - Forecast...The river is expected to rise to a crest of 24.0
    feet early Thursday morning.
  - Flood History...This crest compares to a previous crest of
    23.6 feet on 11/30/1995.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4645 12180 4645 12194 4640 12219 4654 12220
      4659 12198 4661 12183


$$

33

Flood Watch
National Weather Service Seattle WA
507 AM PST Tue Dec 9 2025

WAC009-027-029-031-033-035-041-045-053-055-057-061-067-073-100315-
/O.CON.KSEW.FA.A.0012.000000T0000Z-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 Shelton, Sedro-Woolley, Port Townsend, Marysville,
Lacey, Langley, Bremerton, Olympia, Hoquiam, Everett, Tumwater,
Friday Harbor, Tacoma, Burlington, Mount Vernon, Silverdale,
Anacortes, Freeland, Lynnwood, Seattle, Fords Prairie, Sequim,
Edmonds, Aberdeen, Chehalis, and Bellingham
507 AM PST Tue Dec 9 2025

...FLOOD WATCH REMAINS IN EFFECT 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...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. Storm drains
  and ditches may become clogged with debris. Area creeks and
  streams are running high and could flood with more heavy rain.

* ADDITIONAL DETAILS...
  - An atmospheric river will continue to impact the area through
    much of the week and bring periods moderate to heavy rain to
    the region. Sharp rises are expected 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.

&&

$$

15

Hazard Report Provided By forecast.weather.gov