Weather Alerts for Tacoma Area

Issued by the National Weather Service

       Flood Warning              Flood Warning      

Flood Warning  FLOOD WARNING   Flood Warning
TACOMA AREA

Areas Affected:
King, WA - Pierce, WA
Effective: Sat, 12/13 9:39am Updated: Sat, 12/13 1:53pm Urgency: Immediate
Expires: Sat, 12/13 5:45pm Severity:  Severe  Certainty: Observed

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

White River Near Mud Mtn. Dam Outflow affecting King and Pierce
Counties.

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

* WHERE...White River near Mud Mtn. Dam Outflow.

* WHEN...Until further notice.

* IMPACTS...At 10,000.0 cfs, the White River will flood areas above
and below Mud Mountain Dam downstream to near Auburn. Deep and
swift flood waters will inundate roads and surround and cut off
access to some homes in the Red Creek area. Flood damages occur at
the fish hatchery near the City of Enumclaw. 10000 cfs on the
White river corresponds to a phase 4 flood in the King County
flood system.

* ADDITIONAL DETAILS...
- At 9:00 AM PST Saturday the flow was 10,050.0 cfs.
- Flood flow is 9,000.0 cfs.
- Recent Activity...The maximum river flow in the 24 hours
ending at 9:00 AM PST Saturday was 10,050.0 cfs.
- Forecast...The river is expected to fall to 10,000.0 cfs
early Tuesday morning.
- http://www.weather.gov/safety/flood

Information:
Even 6 inches of fast-moving flood water can knock you off your feet
and a depth of 2 feet will float your car. Never try to walk, swim,
or drive through such swift water. If you come upon flood waters,
stop, turn around and go another way.

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 afternoon at 545 PM PST.

Flood Warning  FLOOD WARNING   Flood Warning
TACOMA AREA

Areas Affected:
King, WA - Pierce, WA
Effective: Sat, 12/13 9:39am Updated: Sat, 12/13 1:53pm Urgency: Expected
Expires: Sat, 12/13 5:45pm Severity:  Severe  Certainty: Likely

 
Details:
...Forecast flooding changed from Minor to Moderate severity for the
following rivers in Washington...

White River At R Street Bridge affecting King and Pierce Counties.

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

* WHERE...White River at R Street Bridge.

* WHEN...Until further notice.

* IMPACTS...At 10,000.0 cfs, River flooding may occur upstream of
the A Street Bridge in the City of Auburn. River levels will
likely be up against the temporary flood protection barriers, with
flooding likely at Government Canal and Butte Avenue in the City
of Pacific and downstream of the Stewart Street Bridge in the City
of Sumner.

* ADDITIONAL DETAILS...
- At 8:45 AM PST Saturday the flow was 9,100.0 cfs.
- Flood flow is 7,500.0 cfs.
- Recent Activity...The maximum river flow in the 24 hours
ending at 8:45 AM PST Saturday was 10,200.0 cfs.
- Forecast...The river is expected to rise to a crest of
10,180.0 cfs late this evening. It will then rise to 10,240.0
cfs early Tuesday morning. Additional rises are possible
thereafter.
- http://www.weather.gov/safety/flood

Information:
Caution is urged when walking near riverbanks.

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.

This will be the last river flood statement on this event. Stay
tuned to developments.

Additional information is available at www.weather.gov.

The next statement will be issued by this afternoon at 545 PM PST.

Special Weather Statement  SPECIAL WEATHER STATEMENT   Special Weather Statement
TACOMA AREA

Areas Affected:
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
Effective: Sat, 12/13 8:12am Updated: Sat, 12/13 1:53pm Urgency: Expected
Expires: Sun, 12/14 11:00am Severity:  Moderate  Certainty: Observed

 
Details:
Rainfall of 2 to 12 inches over the past several days, with locally
higher amounts to 17 inches, has increased soil moisture to very
high levels across western Washington. 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.

Numerous landslides have already been reported in the western
Cascades in western Washington. 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

Hydrologic Outlook  HYDROLOGIC OUTLOOK   Hydrologic Outlook
TACOMA AREA

Areas Affected:
Clallam, WA - Grays Harbor, WA - Jefferson, WA - King, WA - Kitsap, WA - Lewis, WA - Mason, WA - Pierce, WA - Skagit, WA - Snohomish, WA - Thurston, WA - Whatcom, WA
Effective: Sat, 12/13 6:26am Updated: Sat, 12/13 1:53pm Urgency: Future
Expires: Sat, 12/13 7:30pm Severity: Unknown Certainty: Possible

 
Details:
ESFSEW

Another strong atmospheric river will impact western Washington
starting late Sunday extending into mid week. Snow levels will rise
as high as 8500 feet Monday before lowering to 3500 to 4500 feet
Tuesday. Soils will still be saturated and rivers will be elevated.
A few rivers might not drop below flood stage before this round of
rain begins.

Expect rising rivers with the potential for flooding, urban
flooding, and landslides. Debris flows are also possible throughout
this period.

Please monitor the latest river forecasts from the National Weather
Service for additional information.