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Flood Watch

Flood Watch
National Weather Service Seattle WA
1028 AM PST Tue Nov 30 2021

.Heavy rain from a third-in-a-row atmospheric river is impacting the
northern Cascades and Olympic Peninsula bringing a new threat of
flooding.

WAC009-031-045-057-061-073-010730-
/O.CON.KSEW.FA.A.0014.000000T0000Z-211202T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clallam-Jefferson-Mason-Skagit-Snohomish-Whatcom-
Including the cities of Lynnwood, Bellingham, Marysville, Port
Townsend, Everett, Edmonds, Burlington, Shelton, Sedro-Woolley,
Mount Vernon, Sequim, and Anacortes
1028 AM PST Tue Nov 30 2021

...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING...

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

* WHERE...Portions of northwest Washington and west central
  Washington, including the following areas, in northwest
  Washington, Clallam, Jefferson, Mason, Skagit and Whatcom. In west
  central Washington, Snohomish Counties.

* WHEN...Through Thursday morning.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.
  Creeks and streams may rise out of their banks. Most likely rivers
  to watch at this time include the Nooksack, Skagit, Stillaguamish,
  Bogachiel, and Skokomish Rivers. Any flooding that does occur will
  likely be minor.

* ADDITIONAL DETAILS...
  - Moderate to heavy rain, along with warm temperatures, breezy
    winds, and high relative humidities will increase snow melt,
    though there is less than normal low and mid elevation snow
    available to melt. Rainfall up to 2 to 4 inches in the
    mountains and 1 to 2 inches in the lowlands, combining with
    snow levels above 10,000 feet, will have rivers rising in the
    watch area and they could see minor flooding. With this
    decently strong atmospheric river just to our north, should
    it slide in a little more to the south, there would be
    potential for flooding on the more northerly rivers to be
    moderate severity instead of minor.
    The additional rain on saturated soils will increase the
    landslide threat as well.
  - 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.

&&

$$

JBB



Flood Warning

Flood Statement
National Weather Service Seattle WA
839 AM PST Tue Nov 30 2021

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

  Skagit River Near Mt. Vernon affecting Skagit County.

  Nooksack River At Ferndale affecting Whatcom 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.

Caution is urged when walking near riverbanks.

Additional information is available at www.weather.gov.

The next statement will be issued by this afternoon at 1215 PM PST.

&&


WAC073-010045-
/O.EXT.KSEW.FL.W.0093.000000T0000Z-211201T0031Z/
/NKSW1.2.ER.211129T0426Z.211129T2000Z.211130T1503Z.NO/
839 AM PST Tue Nov 30 2021

...FLOOD WARNING NOW IN EFFECT FROM THIS MORNING THROUGH THIS
AFTERNOON...

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

* WHERE...Nooksack River At Ferndale.

* WHEN...Until this afternoon.

* IMPACTS...At 18.0 feet, the river begins overtopping its banks
  within the City of Ferndale flooding low-lying areas within the
  City and low pasture lands along the river from near Ferndale
  downstream to the mouth.

* ADDITIONAL DETAILS...
  - At 8:15 AM PST Tuesday the stage was 17.9 feet.
  - Forecast...The river will continue falling into this
    afternoon then will begin rising again late this evening. It
    will rise above flood stage tomorrow morning and continue to
    rise to 18.6 feet tomorrow afternoon. It will then fall below
    flood stage tomorrow morning.
  - Flood stage is 18.0 feet.
  - Flood History...This crest compares to a previous crest of
    18.4 feet on 01/09/2002.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4889 12247 4887 12253 4878 12254 4876 12263
      4891 12262 4896 12247


$$

JBB



Special Weather Statement

Special Weather Statement
National Weather Service Seattle WA
822 PM PST Mon Nov 29 2021

WAZ001-503-504-506-507-509>517-555-556-558-559-567>569-010015-
San Juan County-Western Whatcom County-Southwest Interior-
Western Skagit County-Everett and Vicinity-Tacoma Area-
Admiralty Inlet Area-Hood Canal Area-Lower Chehalis Valley Area-
Olympics-Eastern Strait of Juan de Fuca-
Western Strait of Juan De Fuca-North Coast-Central Coast-
East Puget Sound Lowlands-Bellevue and Vicinity-
Seattle and Vicinity-Bremerton and Vicinity-
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
822 PM PST Mon Nov 29 2021

...INCREASED THREAT OF LANDSLIDES IN WESTERN WASHINGTON CONTINUES
DUE TO RECENT AND ADDITIONAL HEAVY RAINFALL...

Persistent rainfall over the last few weeks has dramatically
increased increased soil moisture to high levels across Western
Washington. Additional heavy rainfall is expected to begin over
portions of the area on Tuesday and continue into early Thursday.
Generally 2 to 4 inches of rain are expected in the Olympics and
Cascades, with 1 to 2 inches across portions of the lowlands of
Whatcom and Skagit counties. Thus, the increased threat of
landslides will continue.

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



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Silver Spring, MD 20910
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Page last modified: May 16, 2007
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