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Heavy rains increase landslide risks | National Weather Service

The National Weather Service is warning of potential landslides due to the heavy rains over the past 24 hours.

The forecast call for rain or showers through Thursday.

Special Weather Statement

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
356 PM PDT SUN MAR 16 2014

WAZ001-503>512-514>517-171200-
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-
EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA-
EASTERN STRAIT OF JUAN DE FUCA-WESTERN STRAIT OF JUAN DE FUCA-
NORTH COAST-CENTRAL COAST-
356 PM PDT SUN MAR 16 2014

...HEAVY RAINFALL HAS INCREASED THE RISK OF LANDSLIDES IN WESTERN
WASHINGTON...

HEAVY RAINFALL OVER THE PAST 24 HOURS HAS INCREASED SOIL MOISTURE
TO HIGH LEVELS ACROSS WESTERN WASHINGTON. RAINFALL AMOUNTS ARE
UP TO 1 INCH IN PORTIONS OF THE INTERIOR WITH 1 TO 3 INCHES ALONG
THE COAST. THE HEAVY RAIN THAT HAS FALLEN WILL PUT EXTRA PRESSURE
ON SOIL INSTABILITY...LEADING TO AN INCREASED RISK OF LANDSLIDES.

CUMULATIVE RAINFALL OVER THE LAST WEEK HAS SOAKED SOILS TO THE
POINT WHERE THE WASHINGTON LANDSLIDE RISK LEVEL IS AT ELEVATED
LEVELS. LANDSLIDES ARE POSSIBLE OVER THE NEXT COUPLE OF DAYS.

WITH AN ELEVATED LANDSLIDE RISK...RAINFALL INDUCED LANDSLIDES ARE
POSSIBLE DURING BURSTS OF INTENSE RAINFALL OR WHEN THERE IS HEAVY
RAINFALL OVER A PERIOD OF A DAY OR TWO AS NOTED IN THE FORECAST
ELEVATED RISK LEVEL. A GRADUALLY DIMINISHING RISK OF LANDSLIDES
WILL CONTINUE FOR SEVERAL DAYS AFTER THE RAIN ENDS. AREAS MOST
SUSCEPTIBLE TO LANDSLIDES UNDER THESE CONDITIONS ARE STEEP COASTAL
BLUFFS AND OTHER STEEP HILLSIDES.

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.

TO REPORT LANDSLIDES TO THE STATE FOR TABULATION...GO TO THE
WASHINGTON STATE LANDSLIDE RISK WEB PAGE AND THE LINK FOR
REPORTING.

 

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