NWS issues Coastal Flood Advisory and Special Weather Statement on Landslides

Tis the Season! The National Weather Service has issued a Coastal Flood Advisory and Special Weather Statement warning of Landslides.

Coastal Flood Advisory
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
234 AM PST TUE DEC 4 2012

…MINOR TIDAL OVERFLOW IS POSSIBLE THIS MORNING FOR PUGET SOUND.

HIGH ASTRONOMICAL TIDES AND LOW PRESSURES FROM A FRONT MOVING ONSHORE WILL PRODUCE MINOR TIDAL OVERFLOW FOR PARTS OF PUGET SOUND AND THE NORTH INTERIOR THIS MORNING….

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A COASTAL FLOOD ADVISORY…WHICH IS IN EFFECT FROM 4 AM EARLY THIS MORNING TO NOON PST TODAY.

* HAZARD…MINOR TIDAL OVERFLOW NEAR THE BEACHES.

* IMPACTS…MINOR FLOODING IS POSSIBLE NEAR THE WATER AROUND THE
  TIME OF HIGH TIDE.

* TIME OF HIGH TIDE…AROUND 9 AM AT SEATTLE.

* PREDICTED TIDE…11.93 FEET AT SEATTLE.

* EXPECTED TIDAL ANOMALY…1 TO 1.5 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE.

And about those landslides:

… 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.

NOTE: After clicking through the landslide tabs, the current warning level for King County as of December 3, 2012 is “low”.

Puget Sound Marine Forecast:

…SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING

TODAY…S WIND 15 TO 25 KT. WIND WAVES 2 TO 4 FT. RAIN IN THE MORNING…THEN SHOWERS.

TONIGHT…S WIND 15 TO 25 KT. WIND WAVES 2 TO 4 FT. SHOWERS IN THE EVENING…THEN SHOWERS LIKELY.

WED…SW WIND 15 TO 25 KT…EASING TO 5 TO 15 KT. WIND WAVES 2 TO 4 FT…SUBSIDING TO 2 FT OR LESS. SHOWERS LIKELY IN THE MORNING… THEN A CHANCE OF SHOWERS.

WED NIGHT…SW WIND TO 10 KT…BECOMING S 5 TO 15 KT. WIND WAVES 2 FT OR LESS

Seattle area Forecast:

…COASTAL FLOOD ADVISORY IN EFFECT UNTIL NOON PST TODAY…
TODAY…BREEZY. RAIN TURNING TO SHOWERS BEFORE NOON. HIGHS IN THE UPPER 40S TO MID 50S. SOUTH WIND 15 TO 25 MPH. GUSTS TO 35 MPH THIS MORNING.

TONIGHT…BREEZY. SHOWERS. LOWS IN THE UPPER 30S TO MID 40S. SOUTH WIND 15 TO 25 MPH BECOMING SOUTHWEST AFTER MIDNIGHT. GUSTS TO 35 MPH.

WEDNESDAY…BREEZY. SHOWERS LIKELY…THEN CLOUDY WITH A CHANCE OF SHOWERS IN THE AFTERNOON. HIGHS IN THE 40S. SOUTHWEST WIND 15 TO 25 MPH WITH GUSTS TO 35 MPH EASING TO 10 TO 15 MPH IN THE AFTERNOON.

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