Special Weather Statement
Issued by NWS Seattle/Tacoma, WA

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WWUS86 KSEW 161213
SPSSEW

Special Weather Statement
National Weather Service Seattle WA
413 AM PST Thu Feb 16 2017

WAZ503-504-506-507-509-511>513-515>517-555-556-558-559-567>569-
170000-
Western Whatcom County-Southwest Interior-Western Skagit County-
Everett and Vicinity-Tacoma Area-Hood Canal Area-
Lower Chehalis Valley Area-Olympics-
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-
413 AM PST Thu Feb 16 2017

...HEAVY RAINFALL THE PAST 24 TO 36 HOURS HAS LEAD TO AN
INCREASED THREAT OF LANDSLIDES IN WESTERN WASHINGTON...

Heavy rainfall of 2 to 4 inches in the lowlands has fallen over
the past 24 to 36 hours. This amount of rain, in addition to heavy
rain the last 2 weeks, is putting extra pressure on soil
instability, thus leading to an increased threat of landslides.

The USGS antecedent rainfall and antecedent wetness indexes are
above thresholds, indicating an increase in the threat for
landslides. Landslides have occurred, including in West Seattle.

Areas above 6000 feet in elevation have a deep enough snow pack
that this storm is not likely to have much of an effect.

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.

$$

www.weather.gov/seattle


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