Snow Advisory 21, NWS Seattle, WA

000 
WWUS46 KSEW 011325 CCA
WSWSEW

URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE SEATTLE WA
523 AM PST SAT DEC 1 2007

...WINTER STORM FORECAST IN THE MOUNTAINS THIS WEEKEND...
...SNOW EXPECTED OVER THE LOWLANDS TODAY AND TONIGHT...

.A SERIES OF WEATHER SYSTEMS WILL MOVE INTO WESTERN WASHINGTON
TODAY THROUGH MONDAY. SNOW FROM THE FIRST SYSTEM WILL REACH THE
OLYMPICS AROUND MIDDAY AND THE CASCADES LATER THIS AFTERNOON.
SNOWFALL WILL BECOME HEAVY AT TIMES LATER TONIGHT AND SUNDAY AS A
SECOND FRONTAL SYSTEM APPROACHES FROM THE WEST. A THIRD STRONG AND
WARMER SYSTEM WILL REACH THE AREA MONDAY.


WAZ518-519-012145-
/O.COR.KSEW.WS.W.0004.071201T1800Z-071203T1200Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
523 AM PST SAT DEC 1 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO 4 AM PST MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO 4 AM PST MONDAY FOR THE WEST SLOPES OF THE NORTH AND CENTRAL
WASHINGTON CASCADES...

LIGHT SNOW WILL BEGIN THIS AFTERNOON IN THE CASCADES AND CONTINUE
ON AND OFF THROUGH MONDAY MORNING. SNOW WILL INCREASE TONIGHT AND
WILL BE HEAVIEST LATE TONIGHT THROUGH AND SUNDAY NIGHT. TWO OR
THREE FEET OF TOTAL NEW SNOW IS LIKELY IN THE PASSES BY THE TIME
THE SNOW TURNS TO RAIN MONDAY MORNING. AS FREEZING LEVELS RISE
SUNDAY AFTERNOON LOCAL FREEZING RAIN IS ALSO POSSIBLE IN THE
APPROACHES TO THE PASSES.

SINCE THE SNOW LEVEL WILL BE CLOSE TO SEA LEVEL...SNOW WILL FALL
IN THE PASSES AND ALL ALONG THE MAJOR HIGHWAYS. DRIVERS SHOULD BE
AWARE THAT HAZARDOUS DRIVING CONDITIONS WILL EXIST...INCLUDING
ICY ROADS AND AVALANCHE DANGER. LONG DELAYS ARE POSSIBLE.

$$

WAZ513-012145-
/O.COR.KSEW.WS.W.0004.071201T1800Z-071202T0600Z/
OLYMPICS-
523 AM PST SAT DEC 1 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO 10 PM PST THIS EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO 10 PM PST THIS EVENING FOR THE OLYMPICS...

SNOW WILL BEGIN FALLING IN THE OLYMPICS THIS MORNING AND WILL
CONTINUE INTO TONIGHT. TEN TO 18 INCHES ARE LIKELY DURING THIS
STORM. CONDITIONS WILL BE WINDY AND BLOWING AND DRIFTING SNOW WILL
REDUCE VISIBILITY. BY SUNDAY MORNING MOST PRECIPITATION WILL BE IN
THE FORM OF RAIN...WHICH WILL CONTINUE THROUGH MONDAY.

$$

WAZ001-503>512-515>517-012145-
/O.NEW.KSEW.SN.Y.0021.071201T1800Z-071202T0600Z/
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-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
523 AM PST SAT DEC 1 2007

...SNOW ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 10 PM PST
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A SNOW
ADVISORY FOR THE WESTERN WASHINGTON LOWLANDS...WHICH IS IN EFFECT
FROM 10 AM THIS MORNING TO 10 PM PST THIS EVENING.

UP TO THREE INCHES OF SNOW IS EXPECTED ACROSS MUCH OF THE WESTERN
WASHINGTON LOWLANDS BY LATE THIS EVENING. THERE MAY BE LOCAL AREAS
CLOSE TO THE OLYMPICS THAT MAY RECEIVE AROUND 4 INCHES OF
SNOW...SUCH AS HOOD CANAL AND ALONG THE SOUTH SLOPES OF THE
OLYMPICS.

LIGHT SNOW OR SNOW FLURRIES WITH LITTLE OR NO ACCUMULATION CAN BE
EXPECTED THIS MORNING. LIGHT SNOW FROM THE APPROACHING WEATHER
SYSTEM OVER BRITISH COLUMBIA WILL BEGIN ALONG THE COAST LATE THIS
MORNING...THEN SPREAD INLAND ACROSS THE SOUTHWEST INTERIOR AND
PUGET SOUND AROUND MID-AFTERNOON...AND OVER THE NORTH INTERIOR BY
LATE AFTERNOON. A TRACE TO 2 INCHES OF SNOW IS EXPECTED THROUGH LATE
THIS AFTERNOON WITH MUCH OF THE SEATTLE METRO AREA RECEIVING
AROUND 1 INCH.

LIGHT SNOW WILL CONTINUE THIS EVENING...WITH ANOTHER 1 OR 2
INCHES POSSIBLE. TOTAL ACCUMULATIONS FOR MOST AREAS WILL BE IN
THE 1 TO 3 INCH RANGE. THE EASTERN STRAIT OF JUAN DE FUCA WILL BE
SHADOWED BY THE OLYMPICS SO ONLY AN INCH OR LESS IS EXPECTED.
TOTAL ACCUMULATIONS AROUND 4 INCHES MAY FALL ALONG THE SOUTH AND
EAST SLOPES OF THE OLYMPICS...INCLUDING THE AREA AROUND HOOD
CANAL.

THE SNOW WILL TAPER OFF LATE THIS EVENING. THERE MAY BE ENOUGH
WARMING FOR THE SNOW TO CHANGE TO RAIN ALONG THE COAST...AND FOR
RAIN TO MIX IN WITH THE SNOW OVER THE SOUTHWEST INTERIOR AND PUGET
SOUND. 

A SECOND WARMER AND MOIST FRONTAL SYSTEM WILL MOVE IN OFF THE
EASTERN PACIFIC LATE TONIGHT AND SUNDAY. THE EFFECTS OF THIS
SYSTEM OVER THE LOWLANDS ARE MUCH MORE UNCERTAIN. MORE SNOW COULD
FALL SUNDAY MORNING...OR IT COULD END UP BEING RAIN AND SNOW
MIXED...OR JUST RAIN. THE BEST CHANCE FOR SNOW ON SUNDAY WILL BE
NORTH OF SEATTLE UP THROUGH THE NORTH INTERIOR. 

$$

KAM

000 
WWUS46 KSEW 012143
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
143 PM PST SAT DEC 1 2007

...WINTER STORM FORECAST IN THE MOUNTAINS THIS WEEKEND... ...SNOW
EXPECTED OVER THE LOWLANDS TODAY AND TONIGHT...

.A SERIES OF WEATHER SYSTEMS WILL MOVE INTO WESTERN WASHINGTON
TODAY THROUGH MONDAY. SNOW FROM THE FIRST SYSTEM WILL REACH THE
OLYMPICS AROUND MIDDAY AND THE CASCADES LATER THIS AFTERNOON.
SNOWFALL WILL BECOME HEAVY AT TIMES LATER TONIGHT AND SUNDAY AS A
SECOND FRONTAL SYSTEM APPROACHES FROM THE WEST. A THIRD STRONG
AND WARMER SYSTEM WILL REACH THE AREA MONDAY.

WAZ511-020600-
/O.UPG.KSEW.SN.Y.0021.000000T0000Z-071202T0600Z/
/O.NEW.KSEW.HS.W.0005.071201T2143Z-071202T0600Z/
HOOD CANAL AREA-
143 PM PST SAT DEC 1 2007

...HEAVY SNOW WARNING IN EFFECT UNTIL 10 PM PST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT UNTIL 10 PM PST THIS EVENING. THE
SNOW ADVISORY IS NO LONGER IN EFFECT. 

THREE TO SIX INCHES OF SNOW IS LIKELY THIS AFTERNOON AND EVENING
IN THE HOOD CANAL AREA. SNOW WILL TAPER LATE THIS EVENING AND
PRECIPITATION SHOULD CHANGE TO RAIN OVERNIGHT.

$$

WAZ518-519-020600-
/O.CON.KSEW.WS.W.0004.000000T0000Z-071203T1200Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
143 PM PST SAT DEC 1 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST MONDAY. 

LIGHT SNOW BEGAN THIS AFTERNOON IN THE CASCADES AND WILL CONTINUE
ON AND OFF THROUGH MONDAY MORNING. SNOW WILL INCREASE TONIGHT AND
WILL BE HEAVY SUNDAY AND SUNDAY NIGHT NIGHT. TWO OR THREE FEET OF
TOTAL NEW SNOW IS LIKELY IN THE PASSES BY THE TIME THE SNOW TURNS
TO RAIN MONDAY MORNING. AS FREEZING LEVELS RISE SUNDAY AFTERNOON
LOCAL FREEZING RAIN IS ALSO POSSIBLE IN THE APPROACHES TO THE
PASSES.

SINCE THE SNOW LEVEL WILL BE CLOSE TO SEA LEVEL...SNOW WILL FALL
IN THE PASSES AND ALL ALONG THE MAJOR HIGHWAYS. DRIVERS SHOULD BE
AWARE THAT HAZARDOUS DRIVING CONDITIONS WILL EXIST...INCLUDING
ICY ROADS AND AVALANCHE DANGER. LONG DELAYS ARE POSSIBLE.

$$

WAZ513-020600-
/O.CON.KSEW.WS.W.0004.000000T0000Z-071202T0600Z/
OLYMPICS-
143 PM PST SAT DEC 1 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING. 

SNOW BEGAN FALLING IN THE OLYMPICS THIS MORNING AND WILL CONTINUE
INTO TONIGHT. TEN TO 18 INCHES ARE LIKELY DURING THIS STORM.
CONDITIONS WILL BE WINDY AND BLOWING AND DRIFTING SNOW WILL REDUCE
VISIBILITY. BY SUNDAY MORNING MOST PRECIPITATION WILL BE IN THE
FORM OF RAIN...WHICH WILL CONTINUE THROUGH MONDAY.

$$

WAZ514-020600-
/O.EXA.KSEW.SN.Y.0021.000000T0000Z-071202T0600Z/
EASTERN STRAIT OF JUAN DE FUCA-
143 PM PST SAT DEC 1 2007

...SNOW ADVISORY IN EFFECT UNTIL 10 PM PST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT UNTIL 10 PM PST THIS EVENING. 

ONE OR TWO INCHES OF SNOW IS LIKELY OVER THE EASTERN STRAIT OF
JUAN DE FUCA AREA THIS AFTERNOON AND EVENING. SNOW WILL TAPER LATE
THIS EVENING AND PRECIPITATION WILL CHANGE TO RAIN OVERNIGHT.

$$

WAZ001-503>510-512-515>517-020600-
/O.CON.KSEW.SN.Y.0021.000000T0000Z-071202T0600Z/
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-LOWER CHEHALIS VALLEY AREA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
143 PM PST SAT DEC 1 2007

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING. 

ONE TO THREE INCHES OF SNOW IS LIKELY ACROSS THE WESTERN WASHINGTON
LOWLANDS BY LATE THIS EVENING. THE SNOW WILL TAPER OFF LATE THIS
EVENING. SNOW WILL CHANGE TO RAIN ALONG THE COAST THIS AFTERNOON.
THE SNOW WILL PROBABLY CHANGE TO RAIN ELSEWHERE LATE THIS EVENING. 

A WARMER AND MOIST FRONTAL SYSTEM WILL MOVE IN OFF THE EASTERN
PACIFIC LATE TONIGHT AND SUNDAY. THE EFFECTS OF THIS SYSTEM OVER
THE LOWLANDS ARE UNCERTAIN. MORE SNOW COULD FALL SUNDAY MORNING...
OR IT COULD END UP BEING RAIN AND SNOW MIXED...OR JUST RAIN. AT
THIS TIME THE PRECIPITATION IS EXPECTED TO BE IN THE FORM OF RAIN.
THE BEST CHANCE FOR SNOW ON SUNDAY WILL BE NORTH OF SEATTLE UP
THROUGH THE NORTH INTERIOR.

$$
BURKE

000 
WWUS46 KSEW 020558
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
958 PM PST SAT DEC 1 2007

...SNOW OVER THE LOWLANDS IS WINDING DOWN...HOWEVER IT WILL
CONTINUE OVER THE MOUNTAINS...

.A SERIES OF WEATHER SYSTEMS WILL MOVE INTO WESTERN WASHINGTON
THROUGH MONDAY. A SECOND FRONTAL SYSTEM WILL APPROACH FROM THE
WEST SUNDAY...ALLOWING HEAVY SNOW TO REDEVELOP OVER THE OLYMPICS
AND CASCADES IN THE MORNING. SNOWFALL WILL REMAIN HEAVY AT TIMES
OVER THE CASCADES INTO SUNDAY NIGHT WHILE IT WILL TURN TO RAIN
OVER THE OLYMPICS SUNDAY AFTERNOON. A THIRD STRONG AND WARMER
SYSTEM WILL REACH THE AREA MONDAY.

WAZ511-020700-
/O.EXP.KSEW.HS.W.0005.000000T0000Z-071202T0600Z/
HOOD CANAL AREA-
958 PM PST SAT DEC 1 2007

...HEAVY SNOW WARNING WILL EXPIRE AT 10 PM PST THIS EVENING
OVER THE HOOD CANAL AREA...

THE HEAVY SNOW WARNING WILL EXPIRE AT 10 PM PST THIS EVENING. 

THE BULK OF THE SNOW HAS ENDED AND ONLY FLURRIES OR MIXED RAIN AND
SNOW SHOWERS ARE EXPECTED FOR THE REMAINDER OF THE NIGHT. LITTLE
OR NO ADDITIONAL ACCUMULATION IS EXPECTED TONIGHT.

$$

WAZ001-503>510-512-514>517-020700-
/O.EXP.KSEW.SN.Y.0021.000000T0000Z-071202T0600Z/
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-LOWER CHEHALIS VALLEY AREA-
EASTERN STRAIT OF JUAN DE FUCA-WESTERN STRAIT OF JUAN DE FUCA-
NORTH COAST-CENTRAL COAST-
958 PM PST SAT DEC 1 2007

...SNOW ADVISORY WILL EXPIRE AT 10 PM PST THIS EVENING OVER
MOST OF THE WESTERN WASHINGTON LOWLANDS...

THE SNOW ADVISORY WILL EXPIRE AT 10 PM PST THIS EVENING. 

THE BULK OF THE SNOW HAS ENDED AND ONLY FLURRIES OR MIXED RAIN AND
SNOW SHOWERS ARE EXPECTED FOR THE REMAINDER OF THE NIGHT. LITTLE
OR NO ADDITIONAL ACCUMULATION IS EXPECTED TONIGHT.

$$

WAZ513-021400-
/O.EXT.KSEW.WS.W.0004.000000T0000Z-071202T2000Z/
OLYMPICS-
958 PM PST SAT DEC 1 2007

...WINTER STORM WARNING NOW IN EFFECT UNTIL 12 PM PST SUNDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 12 PM PST SUNDAY.

SNOW HAS TAPERED OFF THIS EVENING TO OCCASIONAL SNOW SHOWERS.
HOWEVER A SECOND STORM SYSTEM WILL SPREAD ADDITIONAL PRECIPITATION
OVER THE OLYMPIC RANGE SUNDAY MORNING. THE AIR MASS WILL BE COLD
ENOUGH THAT THE PRECIPITATION WILL REMAIN IN THE FORM OF SNOW
UNTIL THE MID DAY HOURS WHEN IT WILL BEGIN TO CHANGE TO RAIN AS
THE SNOW LEVEL RAPIDLY RISES. AN ADDITIONAL 8 TO 14 INCHES OF SNOW
IS POSSIBLE OVER THE OLYMPICS SUNDAY MORNING...MAINLY OVER
SOUTHERN SLOPES...BEFORE IT CHANGES TO RAIN. 

$$

WAZ518-519-021400-
/O.CON.KSEW.WS.W.0004.000000T0000Z-071203T1200Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
958 PM PST SAT DEC 1 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST MONDAY
OVER THE CENTRAL AND NORTHERN CASCADES...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST MONDAY. 

MODERATE TO HEAVY SNOW WILL CONTINUE OVER THE CASCADES UNTIL
AROUND MIDNIGHT THEN EASE UP TO OCCASIONAL SHOWERS. MODERATE TO
HEAVY SNOW WILL AGAIN BEGIN TO FALL SUNDAY MORNING AS A SECOND
STORM SYSTEM APPROACHES THE REGION. THE SNOW WILL CONTINUE THROUGH
THE DAY SUNDAY AND INTO SUNDAY NIGHT. TWO OR THREE FEET OF TOTAL
SNOW IS LIKELY IN THE PASSES BY THE TIME THE SNOW TURNS TO RAIN
MONDAY MORNING. AS FREEZING LEVELS RISE SUNDAY NIGHT LOCAL
FREEZING RAIN IS ALSO POSSIBLE IN THE APPROACHES TO THE PASSES.

SINCE THE SNOW LEVEL WILL BE CLOSE TO SEA LEVEL...SNOW WILL FALL
IN THE PASSES AND ALL ALONG THE MAJOR HIGHWAYS. DRIVERS SHOULD BE
AWARE THAT HAZARDOUS DRIVING CONDITIONS WILL EXIST...INCLUDING
ICY ROADS AND AVALANCHE DANGER. LONG DELAYS ARE POSSIBLE.

$$

CERNIGLIA
WWW.WEATHER.GOV/SEATTLE