Weather Alerts for Lowlands of Pierce and Southern King Counties

Issued by the National Weather Service

Special Weather Statement  SPECIAL WEATHER STATEMENT   Special Weather Statement
LOWLANDS OF PIERCE AND SOUTHERN KING COUNTIES

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 - 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 - Middle Chehalis River Valley - Willapa and Black Hills - Southern Hood Canal - 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
Effective: Thu, 3/19 12:11pm Updated: Thu, 3/19 2:01pm Urgency: Expected
Expires: Fri, 3/20 12:15pm Severity:  Moderate  Certainty: Observed

 
Details:
Rainfall of 2 to 7 inches over the past 3 days has increased soil
moisture to high levels across western Washington. Heavy rainfall of
0.75 up to 4 inches is expected over the next 30 hours. 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.

Over the last couple days at least one landslide has been reported
in King County. 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