Weather Alerts for Seattle

Issued by the National Weather Service

Winter Weather Advisory  WINTER WEATHER ADVISORY   Winter Weather Advisory
SEATTLE

Areas Affected:
West Slopes North Cascades and Passes - West Slopes North Central Cascades and Passes
Effective: Wed, 1/29 6:00am Updated: Tue, 1/28 9:15pm Urgency: Expected
Expires: Wed, 1/29 4:00pm Severity: Minor Certainty: Likely

 
Details:
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 4 PM PST
WEDNESDAY ABOVE 4000 FEET...
* WHAT...Snow expected above 4000 feet with snow accumulation of 6
to 11 inches.
* WHERE...Cascade mountains including Stevens Pass.
* WHEN...From 6 AM to 4 PM PST Wednesday.
* IMPACTS...Plan on winter driving conditions at the higher
elevations.

Information:
Slow down and use caution while traveling.
For the latest road conditions in Washington state, call 5 1 1.

Special Weather Statement  SPECIAL WEATHER STATEMENT   Special Weather Statement
SEATTLE

Areas Affected:
Central Coast - East Puget Sound Lowlands - Hood Canal Area - Lower Chehalis Valley Area - North Coast - Southwest Interior - Western Skagit County - Western Strait of Juan De Fuca - Western Whatcom County
Effective: Tue, 1/28 6:36pm Updated: Tue, 1/28 9:15pm Urgency: Expected
Expires: Wed, 1/29 9:15am Severity: Minor Certainty: Observed

 
Details:
...MODERATE TO HEAVY RAINFALL WEDNESDAY WILL LEAD TO AN INCREASED
THREAT OF LANDSLIDES IN WESTERN WASHINGTON...
Repeated periods of rainfall over the last several weeks has
increased soil moisture to high levels across western Washington.
Moderate rainfall of up to an inch and a half on Wednesday is
expected. This amount of rain will put extra pressure on soil
instability, leading to an increased threat of landslides being
triggered. This will mostly affect the coast and foothills.
A number of landslides have already been reported in various
locations in western Washington over the last week during or right
after the rainstorms that have occurred. More landslides are
possible.
Areas above about 4000 feet in elevation will see mostly snow and
not be affected.
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
SEATTLE

Areas Affected:
Clallam - Grays Harbor - Jefferson - King - Kitsap - Lewis - Mason - Pierce - Skagit - Snohomish - Thurston - Whatcom
Effective: Tue, 1/28 2:55pm Updated: Tue, 1/28 9:15pm Urgency: Future
Expires: Wed, 1/29 10:30am Severity: Unknown Certainty: Possible

 
Details:
...NEW FLOODING POSSIBLE FRIDAY THROUGH SATURDAY THROUGHOUT
WESTERN WASHINGTON...
Heavy rain overnight and another round of rain Wednesday night
will keep rivers at elevated levels and the ground very wet. A
heavy rain event is forecast for Friday through Saturday. One to
three inches are expected in the lowlands with four to seven
inches in the mountains. Snow levels will be rising above 6000
feet. This amount of rain could produce flooding on many rivers,
streams, and urban areas. At this time, there is some possibility
of moderate or even higher flooding. The landslide threat will
also be increasing.