Snohomish County, Washington
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Snohomish County, Washington
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Flood Watch
WAC009-027-031-033-041-045-053-057-061-067-073-200830-
/O.NEW.KSEW.FA.A.0015.141220T0000Z-141222T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLALLAM-GRAYS HARBOR-JEFFERSON-KING-LEWIS-MASON-PIERCE-SKAGIT-
SNOHOMISH-THURSTON-WHATCOM-
1139 AM PST FRI DEC 19 2014

...FLOOD WATCH IN EFFECT FROM 4 PM PST THIS AFTERNOON THROUGH LATE
SUNDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A

* FLOOD WATCH FOR PORTIONS OF WESTERN WASHINGTON...INCLUDING THE
FOLLOWING COUNTIES... GRAYS HARBOR...CLALLAM...JEFFERSON...
SKAGIT...WHATCOM...KING...LEWIS...MASON...PIERCE...SNOHOMISH...
THURSTON.

* FROM 4 PM PST THIS AFTERNOON THROUGH LATE SUNDAY NIGHT

* HEAVY RAIN IS FORECAST OVER WESTERN WASHINGTON SATURDAY AND
SUNDAY...ESPECIALLY IN THE MOUNTAINS. STRONG WESTERLY FLOW ALOFT
WILL BRING HEAVY RAIN AT TIMES TO THE COAST AND OLYMPICS ON
SATURDAY. HEAVY RAIN WILL SPREAD INTO THE CASCADES SATURDAY
AFTERNOON. MODELS CURRENTLY TAPER RAIN OVER THE OLYMPICS ON
SUNDAY BUT KEEP HEAVY RAIN GOING IN THE CASCADES THROUGH SUNDAY
NIGHT...ESPECIALLY OVER THE CASCADES FROM ABOUT KING COUNTY
SOUTH. THE TOTAL MODEL RAINFALL OVER ABOUT 48 HOURS FROM
SATURDAY MORNING THROUGH SUNDAY NIGHT AMOUNTS TO AROUND THREE TO
SIX INCHES OVER THE OLYMPICS AND CENTRAL CASCADES WITH A NINE-
INCH BULLS-EYE OVER MOUNT RAINIER. RAINFALL OVER THE LOWLANDS WILL
GENERALLY BE AN INCH OR LESS AS THE WESTERLY FLOW CAUSES A
RAINSHADOW EAST OF THE OLYMPICS.

* THESE RAINFALL AMOUNTS ARE ENOUGH TO CAUSE FLOODING. AT THIS
TIME THE RIVERS MOST LIKELY TO FLOOD ARE THE ONES FLOWING OFF
THE CASCADES OF KING...PIERCE...AND LEWIS COUNTIES...AS WELL AS
THE UNUSUALLY FLOOD-PRONE SKOKOMISH RIVER IN MASON COUNTY. ANY
FLOODING WOULD LIKELY BEGIN SATURDAY NIGHT ON THE OLYMPICS AND
SUNDAY FOR THE CASCADES...WITH CRESTS SUNDAY NIGHT OR MONDAY. THE
EXACT POSITION OF THE STREAM OF MOISTURE IS UNCERTAIN SO THIS
OUTLOOK COVERS THE ENTIRE OLYMPIC PENINSULA AND ALL OF THE
CASCADES RIVERS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS CONDITIONS ARE FAVORABLE FOR FLOODING BUT
FLOODING IS NOT IMMINENT OR OCCURRING. MONITOR THE LATEST
FORECASTS FROM THE NATIONAL WEATHER SERVICE AND BE READY TO ACT
QUICKLY IF FLOODING IS OBSERVED OR A WARNING IS ISSUED.

&&

$$

Flood Watch
WAC009-027-031-033-041-045-053-057-061-067-073-210000-
/O.CON.KSEW.FA.A.0015.141221T0000Z-141222T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLALLAM-GRAYS HARBOR-JEFFERSON-KING-LEWIS-MASON-PIERCE-SKAGIT-
SNOHOMISH-THURSTON-WHATCOM-
1208 AM PST SAT DEC 20 2014

...FLOOD WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH LATE
SUNDAY NIGHT...

THE FLOOD WATCH CONTINUES FOR

* PORTIONS OF WESTERN WASHINGTON...INCLUDING THE FOLLOWING
COUNTIES... GRAYS HARBOR...CLALLAM...JEFFERSON...SKAGIT...
WHATCOM...KING...LEWIS...MASON...PIERCE...SNOHOMISH...THURSTON.

* FROM THIS AFTERNOON THROUGH LATE SUNDAY NIGHT

* HEAVY RAIN IS FORECAST OVER WESTERN WASHINGTON TODAY AND
SUNDAY...ESPECIALLY IN THE MOUNTAINS. STRONG SOUTH FLOW ALOFT
WILL BRING HEAVY RAIN AT TIMES TO THE COAST AND OLYMPICS TODAY.
HEAVY RAIN WILL SPREAD OVER THE CASCADES LATE THIS AFTERNOON AS
STRONG WESTERLY FLOW ALOFT DEVELOPS. MODELS CURRENTLY TAPER RAIN
OVER THE OLYMPICS ON SUNDAY BUT KEEP HEAVY RAIN GOING IN THE
CASCADES INTO SUNDAY EVENING...ESPECIALLY OVER THE CASCADES FROM
ABOUT KING COUNTY SOUTH. THE TOTAL MODEL RAINFALL OVER ABOUT 48
HOURS FROM THIS MORNING THROUGH SUNDAY NIGHT AMOUNTS TO AROUND
THREE TO SIX INCHES OVER THE OLYMPICS AND CENTRAL CASCADES WITH
A NINE-INCH BULLS-EYE OVER MOUNT RAINIER. RAINFALL OVER THE
LOWLANDS WILL GENERALLY BE AN INCH OR LESS AS THE WESTERLY FLOW
CAUSES A RAIN SHADOW EAST OF THE OLYMPICS.

* THESE RAINFALL AMOUNTS ARE ENOUGH TO CAUSE FLOODING. AT THIS
TIME THE RIVERS MOST LIKELY TO FLOOD ARE THE ONES FLOWING OFF
THE CASCADES OF KING...PIERCE...AND LEWIS COUNTIES...AS WELL AS
THE UNUSUALLY FLOOD-PRONE SKOKOMISH RIVER IN MASON COUNTY. ANY
FLOODING WOULD LIKELY BEGIN SATURDAY NIGHT ON THE OLYMPICS AND
SUNDAY FOR THE CASCADES...WITH CRESTS SUNDAY NIGHT OR MONDAY.
THE EXACT POSITION OF THE STREAM OF MOISTURE IS UNCERTAIN SO
THIS OUTLOOK COVERS THE ENTIRE OLYMPIC PENINSULA AND ALL OF THE
CASCADES RIVERS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS CONDITIONS ARE FAVORABLE FOR FLOODING BUT
FLOODING IS NOT IMMINENT OR OCCURRING. MONITOR THE LATEST
FORECASTS FROM THE NATIONAL WEATHER SERVICE AND BE READY TO ACT
QUICKLY IF FLOODING IS OBSERVED OR A WARNING IS ISSUED.

&&

$$




Winter Weather Advisory
WAZ567>569-210000-
/O.CON.KSEW.WW.Y.0029.000000T0000Z-141221T0000Z/
CASCADES OF WHATCOM AND SKAGIT COUNTIES-
CASCADES OF SNOHOMISH AND KING COUNTIES-
CASCADES OF PIERCE AND LEWIS COUNTIES-
404 AM PST SAT DEC 20 2014

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON FOR THE WEST SLOPES OF THE WASHINGTON CASCADES...

* SOME AFFECTED LOCATIONS...WHITE PASS...PARADISE...SNOQUALMIE
PASS...STEVENS PASS...MOUNT BAKER.

* TIMING...SNOW...HEAVY AT TIMES...THIS MORNING THROUGH EARLY
AFTERNOON. SNOW LEVELS WILL START OUT NEAR 3000 FEET...RISING TO
4500 FEET TO 6500 FEET FROM SNOQUALMIE PASS SOUTHWARD BY MIDDAY.
RISING TO 5500 FEET FROM STEVENS PASS NORTHWARD BY LATE
AFTERNOON.

* ACCUMULATIONS...4 TO 11 INCHES WITH THE HIGHEST AMOUNTS AT
PARADISE AND ON MOUNT BAKER.

* MAIN IMPACT...BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES. USE CAUTION WHILE DRIVING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR ROAD CONDITIONS OR TRAVEL ALERTS...CALL 5-1-1 OR 1-800-695-
7623...OR VISIT WWW.WSDOT.WA.GOV.

&&

$$

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