It's November — and time for some heavy weather [Update]

As if on cue, a spate of wet, windy and (in some places) snowy weather is coming to the North Olympic Peninsula and Western Washington (the latter geography is made more important because of Thanksgiving travel).

Here are weather advisories straight from the National Weather Service.

Port Angeles, Sequim, Port Townsend and most of the North Olympic Peninsula; Western Washington:

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
844 AM PST MON NOV 19 2012

WAZ001-503>519-200445-
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-
OLYMPICS-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
844 AM PST MON NOV 19 2012

...HEAVY RAINFALL TODAY WILL LEAD TO INCREASED RISK OF LANDSLIDES
IN WESTERN WASHINGTON...

RAINFALL UP TO 1.5 INCHES...WITH LOCALIZED AMOUNTS NEAR 3 INCHES...
DURING THE 24 HOURS ENDING AT 8 AM PST HAS INCREASED THE SOIL
MOISTURE TO MODERATE LEVELS ACROSS WESTERN WASHINGTON. ADDITIONAL
RAINFALL OF UP TO 2 INCHES IS EXPECTED BY LATE THIS EVENING. THIS
AMOUNT OF RAIN WILL PUT EXTRA PRESSURE ON SOIL INSTABILITY...
LEADING TO A RISK OF SCATTERED LANDSLIDES.

CUMULATIVE RAINFALL OVER THE LAST WEEK HAS SOAKED SOILS TO THE
POINT WHERE THE WASHINGTON LANDSLIDE RISK LEVEL WAS MODERATE.
THE PREDICTED RAINFALL COULD RAISE THE LEVEL TO HIGH. THE HIGHER
THE RISK LEVEL...THE MORE NUMEROUS THE LANDSLIDES ARE LIKELY TO
BE.

AREAS ABOVE 5000 FEET IN ELEVATION AND TO NEAR 3000 FEET IN THE
CASCADES PASSES WILL SEE MOSTLY SNOW AND NOT BE AFFECTED.

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.


Flood advisory

FLOOD ADVISORY
NATIONAL WEATHER SERVICE SEATTLE WA
535 AM PST MON NOV 19 2012

WAC009-027-029-031-033-035-041-045-053-061-067-200130-
/O.NEW.KSEW.FA.Y.0003.121119T1335Z-121120T0130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
THURSTON-ISLAND-LEWIS-SNOHOMISH-MASON-GRAYS HARBOR-PIERCE-KITSAP-KING-
JEFFERSON-CLALLAM-
535 AM PST MON NOV 19 2012

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED AN

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR...
CLALLAM COUNTY...
ISLAND COUNTY...
JEFFERSON COUNTY...
KING COUNTY...
KITSAP COUNTY...
LEWIS COUNTY...
MASON COUNTY...
PIERCE COUNTY...
SNOHOMISH COUNTY...
THURSTON COUNTY...
GRAYS HARBOR COUNTY...

* UNTIL 530 PM PST MONDAY.

* MODERATE TO HEAVY RAIN IS EXPECTED ACROSS THE WESTERN WASHINGTON
LOWLANDS TODAY. RAINFALL AMOUNT OF 1 TO 2 INCHES ARE FORECAST WITH
HIGHER AMOUNTS POSSIBLE ALONG THE COAST AND NEAR THE OREGON
BORDER. THIS WILL PRODUCE MINOR FLOODING OF URBAN AREAS AND SMALL
STREAMS INTO THIS EVENING ESPECIALLY ROADWAYS THAT ARE PRONE TO
PONDING OF WATER INCLUDE UNDERPASSES AND INTERSECTIONS WHERE
DRAINAGE IS POOR DUE TO THE BUILD UP OF LEAVES AND OTHER DEBRIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER IN URBAN AREAS...
HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER POOR DRAINAGE
AREAS AND LOW LYING SPOTS.

Last modified: November 19. 2012 10:15AM
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