Winter Storm Warning 23, NWS Seattle, WA

591 
WWUS46 KSEW 161805
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
1005 AM PST SUN DEC 16 2012

WAZ513-170300-
/O.UPG.KSEW.WW.Y.0043.000000T0000Z-121217T0200Z/
/O.UPG.KSEW.WS.A.0018.121217T0200Z-121217T2000Z/
/O.EXB.KSEW.WS.W.0023.121216T2200Z-121218T0200Z/
OLYMPICS-
1005 AM PST SUN DEC 16 2012

...WINTER STORM WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO
6 PM PST MONDAY...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WARNING FOR ...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6
PM PST MONDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.
THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

* SOME AFFECTED LOCATIONS...HURRICANE RIDGE.

* TIMING...STEADY SNOW WILL DEVELOP OVER THE AREA TODAY AND BECOME
  LOCALLY HEAVY AT TIMES TONIGHT AND MONDAY. THE HEAVIEST SNOW
  THROUGH TONIGHT WILL BE ALONG SOUTH FACING SLOPES. BEHIND THE
  LOW ON MONDAY...HEAVIER SNOW WILL FOCUS ALONG THE WEST FACING
  SLOPES. EXPECT THE STEADY SNOW TO TAPER OFF TO SHOWERS MONDAY
  NIGHT.

* SNOW ACCUMULATIONS...4 TO 8 INCHES OF NEW SNOW IS LIKELY
  TODAY...WITH ANOTHER 12 TO 18 INCHES EXPECTED TONIGHT AND MONDAY.
  IN ADDITION...EXPECT GUSTY WINDS TO NEAR 65 MPH ACROSS RIDGES
  EXPOSED TO SOUTH OR SOUTHWEST WINDS.

* MAIN IMPACT...THE COMBINATION OF STRONG WINDS AND HEAVY SNOW 
  COULD RESULT IN AREAS OF BLOWING OR DRIFTING SNOW AT THE 
  HIGHER ELEVATIONS...INCLUDING HURRICANE RIDGE. 

CHECK THE STATUS OF HURRICANE RIDGE ROAD IF YOU ARE PLANNING
TRAVEL IN THE OLYMPICS TODAY. FOR THE ROAD CONDITIONS...CALL 360-
565-3131 OR VISIT WWW.NPS.GOV/OLYM/INDEX.HTM.

A WINTER STORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE
WINTER WEATHER. THOSE PLANNING TRAVEL IN THE WATCH AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR NOAA WEATHER RADIO FOR THE LATEST INFORMATION...FORECASTS...AND
WARNINGS. 

&&

$$

WAZ518-519-170300-
/O.CON.KSEW.WS.W.0023.121217T0200Z-121218T0200Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
1005 AM PST SUN DEC 16 2012

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 6 PM PST MONDAY...

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

* TIMING...STEADY SNOW WILL DEVELOP DURING THE DAY TODAY AND THEN
  BECOME HEAVY AT TIMES TONIGHT AND MONDAY. THE SNOW WILL TAPER
  OFF TO SHOWERS MONDAY EVENING.

* SNOW ACCUMULATIONS...2 TO 4 INCHES TODAY. ANOTHER 1 TO 3 FEET OF
  SNOW IS LIKELY BY MONDAY EVENING. EXPECT STRONG GUSTY WINDS TO
  NEAR 60 MPH OVER RIDGES...AND ALSO IN THE PASSES MONDAY
  AFTERNOON AND EVENING.

* MAIN IMPACT...HAZARDOUS WINTER DRIVING CONDITIONS CAN BE
  EXPECTED IN THE PASSES TONIGHT THROUGH MONDAY. THERE MAY BE
  AREAS OF BLOWING OR DRIFTING SNOW IN THE PASSES THAT COULD MAKE
  FOR POOR VISIBILITIES AT TIMES LATE TONIGHT THROUGH MONDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNING AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER CONDITIONS.

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

&&

$$
WEATHER.GOV/SEATTLE
MERCER

428 
WWUS46 KSEW 162205
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
205 PM PST SUN DEC 16 2012

WAZ519-170615-
/O.CAN.KSEW.WS.W.0023.121217T0200Z-121218T0200Z/
/O.NEW.KSEW.BZ.W.0001.121217T0200Z-121218T0200Z/
WEST SLOPES CENTRAL CASCADES AND PASSES-
205 PM PST SUN DEC 16 2012

...BLIZZARD WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM PST
MONDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM PST
MONDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED. 

* SOME AFFECTED LOCATIONS...SNOQUALMIE PASS...STEVENS PASS...WHITE
  PASS...AND PARADISE.

* TIMING...STEADY SNOW WILL DEVELOP DURING THE DAY TODAY AND THEN
  BECOME HEAVY AT TIMES TONIGHT AND MONDAY. THE SNOW WILL TAPER
  OFF TO SHOWERS MONDAY EVENING. WIND WILL RAPIDLY INCREASE AFTER
  ABOUT 4 AM. WHITEOUT CONDITIONS WITH SIGNIFICANT BLOWING AND
  DRIFTING OF SNOW CAN BE EXPECTED 4 AM LATE TONIGHT THROUGH
  MONDAY AFTERNOON.
 
* WIND...30 TO 40 MPH WITH GUSTS TO 60 MPH IN THE PASSES. GUSTS 70
  TO 90 MPH ON EXPOSED RIDGES. 

* VISIBILITY...VISIBILITY WILL FALL TO NEAR ZERO AROUND 4 AM AND
  STAY BELOW 1/4 MILE IN SNOW AND BLOWING SNOW THROUGH MUCH OF
  MONDAY AFTERNOON.

* SNOW ACCUMULATIONS...1 TO 3 FEET OF SNOW IS LIKELY BY MONDAY
  EVENING. THERE WILL BE SIGNIFICANT DRIFTING OF THE SNOW.

* SNOW LEVEL...RISING TO 2500 FEET TONIGHT THEN FALLING TO 1500
  FEET MONDAY AFTERNOON.

* MAIN IMPACT...WHITEOUT CONDITIONS ARE EXPECTED DUE TO HEAVY SNOW
  AND STRONG WINDS LATE TONIGHT THROUGH MONDAY IN THE PASSES.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

THIS IS AN EXTREMELY DANGEROUS SITUATION. CONSIDERABLE BLOWING
AND DRIFTING SNOW WILL CREATE WHITEOUT CONDITIONS AND MAKE
ROADWAYS IMPASSABLE. IF YOU BECOME STRANDED...THE SITUATION COULD
BECOME LIFE THREATENING.

&&

$$

WAZ513-170615-
/O.NEW.KSEW.BZ.W.0001.121217T0200Z-121218T0200Z/
/O.EXT.KSEW.WS.W.0023.000000T0000Z-121217T0200Z/
OLYMPICS-
205 PM PST SUN DEC 16 2012

...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 PM PST THIS
EVENING...
...BLIZZARD WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM PST
MONDAY...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM PST
MONDAY. 

* SOME AFFECTED LOCATIONS...HURRICANE RIDGE.

* TIMING...STEADY SNOW WILL DEVELOP OVER THE AREA TODAY AND 
  BECOME LOCALLY HEAVY AT TIMES TONIGHT AND MONDAY. THE HEAVIEST 
  SNOW THROUGH TONIGHT WILL BE ALONG SOUTH FACING SLOPES. BEHIND 
  THE LOW ON MONDAY...HEAVIER SNOW WILL FOCUS ALONG THE WEST 
  FACING SLOPES. EXPECT THE STEADY SNOW TO TAPER OFF TO SHOWERS 
  MONDAY NIGHT. 

* WIND...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 40 TO 60 MPH
  WITH GUSTS TO 75 MPH TONIGHT THEN TURN TO THE WEST AROUND 4 AM
  MONDAY. WIND WILL SLOWLY RELAX LATE MONDAY AFTERNOON.

* VISIBILITY...VISIBILITY WILL FALL TO NEAR ZERO IN SNOW AND
  BLOWING SNOW TONIGHT AND REMAIN LOW THROUGH MONDAY AFTERNOON.

* SNOW ACCUMULATIONS...4 TO 8 INCHES OF NEW SNOW IS LIKELY
  TODAY...WITH ANOTHER 12 TO 18 INCHES EXPECTED TONIGHT AND
  MONDAY.

* SNOW LEVEL...RISING TO 2500 FEET TONIGHT THEN FALLING TO 1500
  FEET MONDAY AFTERNOON.

* MAIN IMPACT...WHITEOUT CONDITIONS ARE EXPECTED DUE TO HEAVY SNOW
  AND STRONG WINDS TONIGHT THROUGH MONDAY AT HIGHER
  ELEVATIONS...INCLUDING HURRICANE RIDGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.


THIS IS AN EXTREMELY DANGEROUS SITUATION. CONSIDERABLE BLOWING
AND DRIFTING SNOW WILL CREATE WHITEOUT CONDITIONS AND MAKE
ROADWAYS IMPASSABLE. IF YOU BECOME STRANDED...THE SITUATION COULD
BECOME LIFE THREATENING.

&&

$$

WAZ518-170615-
/O.CON.KSEW.WS.W.0023.121217T0200Z-121218T0200Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
205 PM PST SUN DEC 16 2012

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 6 PM PST MONDAY...

* SOME AFFECTED LOCATIONS...MOUNT BAKER.

* TIMING...STEADY SNOW WILL DEVELOP DURING THE DAY TODAY AND 
  THEN BECOME HEAVY AT TIMES TONIGHT AND MONDAY. THE SNOW WILL 
  TAPER OFF TO SHOWERS MONDAY EVENING. 

* SNOW ACCUMULATIONS...2 TO 4 INCHES TODAY. ANOTHER 1 TO 3 FEET OF
  SNOW IS LIKELY BY MONDAY EVENING. THE HEAVY SNOW WILL BE
  ACCOMPANIED BY 20 TO 40 MPH WINDS TONIGHT INTO MONDAY MORNING.

* SNOW LEVEL...RISING TO 2500 FEET TONIGHT THEN FALLING TO 1500
  FEET MONDAY AFTERNOON.

* MAIN IMPACT...HAZARDOUS WINTER DRIVING CONDITIONS CAN BE
  EXPECTED THROUGH MONDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNING AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER CONDITIONS.

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

&&

$$

ALBRECHT
WEATHER.GOV/SEATTLE

100 
WWUS46 KSEW 170240
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
640 PM PST SUN DEC 16 2012

WAZ511-171045-
/O.EXB.KSEW.WS.W.0023.000000T0000Z-121217T1200Z/
HOOD CANAL AREA-
640 PM PST SUN DEC 16 2012

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

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT UNTIL 4 AM PST
MONDAY.

* SOME AFFECTED LOCATIONS...HOODSPORT...BRINNON...SEABECK...UNION.

* TIMING...HEAVY WET SNOW WILL CONTINUE UNTIL ABOUT 4 AM WHEN
  PRECIPITATION WILL TURN TO RAIN.

* SNOW ACCUMULATIONS...2 TO 6 INCHES TONIGHT. LOCALLY HEAVIER
  AMOUNTS OVER 6 INCHES ARE POSSIBLE AROUND THE CENTRAL HOOD CANAL
  AREA.

* MAIN IMPACT...HAZARDOUS WINTER DRIVING CONDITIONS CAN BE 
  EXPECTED THROUGH MONDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNING AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER CONDITIONS.

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

&&

$$

WAZ513-519-171045-
/O.CON.KSEW.BZ.W.0001.000000T0000Z-121218T0200Z/
OLYMPICS-WEST SLOPES CENTRAL CASCADES AND PASSES-
640 PM PST SUN DEC 16 2012

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM PST MONDAY...

* SOME AFFECTED LOCATIONS...HURRICANE RIDGE...SNOQUALMIE
  PASS...STEVENS PASS...WHITE PASS...PARADISE RANGER STATION.

* TIMING...BLIZZARD CONDITIONS TONIGHT WILL CONTINUE THROUGH
  MONDAY AFTERNOON.

* WIND...SOUTHWEST TO WEST WINDS 40 TO 60 MPH WITH GUSTS TO 75 MPH
  TONIGHT WILL TURN TO THE WEST AROUND 4 AM MONDAY. WIND GUSTS 75
  TO 90 MPH CAN BE EXPECTED ON HIGHER RIDGES IN THE CENTRAL
  CASCADES. WIND WILL SLOWLY RELAX LATE MONDAY AFTERNOON.

* VISIBILITY...VISIBILITY WILL FALL TO NEAR ZERO IN SNOW AND 
  BLOWING SNOW TONIGHT AND REMAIN LOW THROUGH MONDAY AFTERNOON. 

* SNOW ACCUMULATIONS...12 TO 18 INCHES THROUGH MONDAY IN THE
  OLYMPICS AND 1 TO 3 FEET IN THE CENTRAL CASCADES THROUGH MONDAY
  EVENING.

* SNOW LEVEL...RISING TO 2500 FEET TONIGHT THEN FALLING TO 1500 
  FEET MONDAY AFTERNOON. 

* MAIN IMPACT...WHITEOUT CONDITIONS ARE EXPECTED DUE TO HEAVY SNOW
  AND STRONG WINDS TONIGHT THROUGH MONDAY AT HIGHER ELEVATIONS AND
  IN THE CENTRAL CASCADE PASSES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

THIS IS AN EXTREMELY DANGEROUS SITUATION. CONSIDERABLE BLOWING
AND DRIFTING SNOW WILL CREATE WHITEOUT CONDITIONS AND MAKE
ROADWAYS IMPASSABLE. IF YOU BECOME STRANDED...THE SITUATION COULD
BECOME LIFE THREATENING.

&&

$$

WAZ518-171045-
/O.CON.KSEW.WS.W.0023.000000T0000Z-121218T0200Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
640 PM PST SUN DEC 16 2012

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM PST MONDAY...

* SOME AFFECTED LOCATIONS...MOUNT BAKER.

* TIMING...HEAVY SNOW TONIGHT WILL CONTINUE THROUGH MONDAY. SNOW
  WILL TAPER OFF MONDAY NIGHT.

* SNOW ACCUMULATIONS...1 TO 3 FEET OF SNOW IS LIKELY BY MONDAY
  EVENING. THE HEAVY SNOW WILL BE ACCOMPANIED BY 20 TO 40 MPH
  WINDS TONIGHT INTO MONDAY MORNING.

* SNOW LEVEL...RISING TO 2500 FEET TONIGHT THEN FALLING TO 1500 
  FEET MONDAY AFTERNOON. 

* MAIN IMPACT...HAZARDOUS WINTER DRIVING CONDITIONS CAN BE 
  EXPECTED THROUGH MONDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNING AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER CONDITIONS.

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

&&

$$

ALBRECHT
WEATHER.GOV/SEATTLE

741 
WWUS46 KSEW 170753
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
1153 PM PST SUN DEC 16 2012

WAZ511-170900-
/O.CAN.KSEW.WS.W.0023.000000T0000Z-121217T1200Z/
HOOD CANAL AREA-
1153 PM PST SUN DEC 16 2012

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS CANCELLED THE WINTER
STORM WARNING. 

TEMPERATURES HAVE WARMED AND SNOW LEVELS ACROSS THE AREA HAVE
RISEN TO AROUND 2500 FEET. 2 TO 6 INCHES OF SNOW WERE REPORTED
ACROSS PORTIONS OF THE HOOD CANAL ZONE FROM JUST NORTH OF SHELTON
TO THE HOOD CANAL BRIDGE.

$$

WAZ513-519-171600-
/O.CON.KSEW.BZ.W.0001.000000T0000Z-121218T0200Z/
OLYMPICS-WEST SLOPES CENTRAL CASCADES AND PASSES-
1153 PM PST SUN DEC 16 2012

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM PST MONDAY...

* SOME AFFECTED LOCATIONS...HURRICANE RIDGE...SNOQUALMIE PASS... 
  STEVENS PASS...WHITE PASS...PARADISE RANGER STATION. 

* TIMING...BLIZZARD CONDITIONS OVER THE OLYMPICS WILL SPREAD INTO
  THE CASCADES LATE TONIGHT...AND WILL CONTINUE THROUGH MONDAY
  AFTERNOON.

* WIND...EXPECT SOUTHWEST TO WEST WINDS 40 TO 60 MPH WITH GUSTS TO
  75 MPH TONIGHT OVER THE OLYMPICS TO TURN TO THE WEST. WEST
  WINDS WILL INCREASE TO 35 MPH WITH GUSTS TO 60 MPH IN THE
  CASCADE PASSES LATE TONIGHT. WIND GUSTS 75 TO 90 MPH CAN BE
  EXPECTED ON HIGHER RIDGES IN THE CENTRAL CASCADES. WIND WILL
  SLOWLY RELAX LATE MONDAY AFTERNOON.

* VISIBILITY...VISIBILITY WILL FALL TO NEAR ZERO IN SNOW AND 
  BLOWING SNOW TONIGHT AND REMAIN LOW THROUGH MONDAY AFTERNOON. 

* SNOW ACCUMULATIONS...12 TO 18 INCHES THROUGH MONDAY IN THE 
  OLYMPICS AND 1 TO 3 FEET IN THE CENTRAL CASCADES THROUGH 
  MONDAY EVENING. 

* SNOW LEVEL...2000 TO 2500 FEET TONIGHT THEN FALLING TO 1500 FEET
  MONDAY AFTERNOON.

* MAIN IMPACT...WHITEOUT CONDITIONS ARE EXPECTED DUE TO HEAVY 
  SNOW AND STRONG WINDS TONIGHT THROUGH MONDAY AT HIGHER 
  ELEVATIONS AND IN THE CENTRAL CASCADE PASSES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

THIS IS AN EXTREMELY DANGEROUS SITUATION. CONSIDERABLE BLOWING
AND DRIFTING SNOW WILL CREATE WHITEOUT CONDITIONS AND MAKE
ROADWAYS IMPASSABLE. IF YOU BECOME STRANDED...THE SITUATION COULD
BECOME LIFE THREATENING.

&&

$$

WAZ518-171600-
/O.CON.KSEW.WS.W.0023.000000T0000Z-121218T0200Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
1153 PM PST SUN DEC 16 2012

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM PST MONDAY...

* SOME AFFECTED LOCATIONS...MOUNT BAKER.

* TIMING...HEAVY SNOW TONIGHT WILL CONTINUE THROUGH MONDAY. SNOW 
  WILL TAPER OFF MONDAY NIGHT. 

* SNOW ACCUMULATIONS...1 TO 3 FEET OF SNOW IS LIKELY BY MONDAY 
  EVENING. THE HEAVY SNOW WILL BE ACCOMPANIED BY 20 TO 40 MPH 
  WINDS TONIGHT INTO MONDAY MORNING. 

* SNOW LEVEL...2000 TO 2500 FEET TONIGHT THEN FALLING TO 1500
  FEET MONDAY AFTERNOON.

* MAIN IMPACT...HAZARDOUS WINTER DRIVING CONDITIONS CAN BE 
  EXPECTED THROUGH MONDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNING AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER CONDITIONS.

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

&&

$$

ALBRECHT
WEATHER.GOV/SEATTLE

695 
WWUS46 KSEW 171259
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
459 AM PST MON DEC 17 2012

WAZ519-172100-
/O.EXB.KSEW.WS.W.0023.121217T2000Z-121218T0200Z/
/O.EXT.KSEW.BZ.W.0001.000000T0000Z-121217T2000Z/
WEST SLOPES CENTRAL CASCADES AND PASSES-
459 AM PST MON DEC 17 2012

...BLIZZARD WARNING NOW IN EFFECT FOR THE CENTRAL CASCADES ABOVE
1000 FEET UNTIL NOON PST TODAY...
...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO 6 PM PST
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM PST THIS
EVENING.

* SOME AFFECTED LOCATIONS...SNOQUALMIE PASS...STEVENS PASS...
  WHITE PASS...AND PARADISE.

* WIND...WESTERLY 30 TO 45 MPH WITH GUSTS TO 65 MPH WILL DEVELOP
  EARLY THIS MORNING IN THE PASSES IN THE WAKE OF A STRONG FRONT.
  THE VERY STRONG WINDS WILL BEGIN DIMINISHING ABOUT MIDDAY.

* VISIBILITY...DOWN TO ZERO AT TIMES THIS MORNING DUE TO BLOWING
  OR DRIFTING SNOW. IMPROVING CONDITIONS CAN BE ANTICIPATED THIS
  AFTERNOON BUT SNOW SQUALLS WILL LIKELY CONTINUE.

* SNOW ACCUMULATIONS...ANOTHER 8 TO 12 INCHES IS LIKELY BY LATE
  TODAY.

* MAIN IMPACT...EXTREMELY DIFFICULT...POSSIBLY DANGEROUS...TRAVEL
  CONDITIONS CAN BE EXPECTED IN THE CASCADES TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. IF YOU MUST
TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

THIS IS AN EXTREMELY DANGEROUS SITUATION. CONSIDERABLE BLOWING
AND DRIFTING SNOW WILL CREATE WHITEOUT CONDITIONS AND MAKE
ROADWAYS IMPASSABLE. IF YOU BECOME STRANDED...THE SITUATION COULD
BECOME LIFE THREATENING.

&&

$$

WAZ513-172100-
/O.NEW.KSEW.WW.Y.0044.121217T2000Z-121218T0200Z/
/O.EXT.KSEW.BZ.W.0001.000000T0000Z-121217T2000Z/
OLYMPICS-
459 AM PST MON DEC 17 2012

...BLIZZARD WARNING NOW IN EFFECT FOR THE OLYMPICS ABOVE 1000 FEET
UNTIL NOON PST TODAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 6 PM PST
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR BLOWING SNOW...WHICH IS IN EFFECT FROM NOON
TODAY TO 6 PM PST THIS EVENING.

* SOME AFFECTED LOCATIONS...HURRICANE RIDGE.

* WIND...WESTERLY 30 TO 40 MPH WITH GUSTS TO 55 MPH CAN BE EXPECTED
  ACROSS SOME AREAS THIS MORNING. THE WINDS WILL DECREASE ABOUT
  MIDDAY.

* VISIBILITY...NEAR ZERO AT TIMES IN SOME AREAS THIS MORNING DUE
  TO BLOWING OR DRIFTING SNOW. AREAS OF BLOWING OR DRIFTING SNOW
  CAN BE EXPECTED THIS AFTERNOON BUT WITH LESS WIND...CONDITIONS
  WILL NOT BE AS POOR AS THIS MORNING.

* SNOW ACCUMULATIONS...ANOTHER 3 TO 6 INCHES IS LIKELY TODAY.

* MAIN IMPACT...HURRICANE RIDGE ROAD MIGHT BE CLOSED TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

THIS IS AN EXTREMELY DANGEROUS SITUATION. CONSIDERABLE BLOWING
AND DRIFTING SNOW WILL CREATE WHITEOUT CONDITIONS AND MAKE
ROADWAYS IMPASSABLE. IF YOU BECOME STRANDED...THE SITUATION COULD
BECOME LIFE THREATENING.

FOR THE STATUS OF HURRICANE RIDGE ROAD...CALL 360-565-3131 OR
VISIT WWW.NPS.GOV/OLYM/INDEX.HTM.

&&

$$

WAZ518-172100-
/O.CON.KSEW.WS.W.0023.000000T0000Z-121218T0200Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
459 AM PST MON DEC 17 2012

...WINTER STORM WARNING REMAINS IN EFFECT FOR THE NORTH CASCADES
ABOVE 1000 FEET UNTIL 6 PM PST THIS EVENING...

* SOME AFFECTED LOCATIONS...MOUNT BAKER.

* SNOW ACCUMULATIONS...ANOTHER 7 TO 10 INCHES IS LIKELY BY LATE
  TODAY.  

* MAIN IMPACT...HAZARDOUS WINTER DRIVING CONDITIONS CAN BE
  EXPECTED IN THE NORTH CASCADE PASSES TODAY. IN ADDITION...THERE
  COULD BE SOME LOCALIZED BLOWING OR DRIFTING SNOW AT THE HIGHER
  ELEVATIONS. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNING AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER CONDITIONS.

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

&&

$$

WAZ505>507-510-172100-
/O.NEW.KSEW.WS.A.0019.121218T0600Z-121218T2000Z/
EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-ADMIRALTY INLET AREA-
459 AM PST MON DEC 17 2012

...WINTER STORM WATCH IN EFFECT FOR THE ADMIRALTY INLET AREA...
WESTERN SKAGIT LOWLANDS...WESTERN SNOHOMISH COUNTY LOWLANDS...AND
THE CASCADE FOOTHILLS IN SNOHOMISH COUNTY AND FAR NORTH KING
COUNTY FROM THIS EVENING THROUGH TUESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM THIS EVENING THROUGH TUESDAY
MORNING. 

* SOME AFFECTED LOCATIONS...STANWOOD...OAK HARBOR...EVERETT...GOLD
  BAR...MILL CREEK...LAKE STEVENS...AND CARNATION.

* TIMING...A PUGET SOUND CONVERGENCE ZONE WILL DEVELOP LATER TODAY
  AND IS EXPECTED TO PERSIST THROUGH AT LEAST TUESDAY MORNING. ANY
  PRECIPITATION THAT FALLS TONIGHT THROUGH TUESDAY MORNING WILL
  MOST LIKELY BE IN THE FORM OF SNOW.

* SNOW ACCUMULATIONS...1 TO 4 INCHES OF SNOW IS POSSIBLE BUT THERE
  COULD BE LOCALLY HIGHER AMOUNTS IF A STRONG CONVERGENCE ZONE
  DEVELOPS. INITIALLY...THE SNOW WILL PROBABLY NOT STICK TO THE
  ROADS...ESPECIALLY IN THOSE AREAS CLOSE TO LARGE WATER BODIES.
  HOWEVER IF THERE IS A PROLONGED PERIOD OF MODERATE TO HEAVY
  SNOW...THE SNOW WILL LIKELY STICK TO THE ROADS.

* MAIN IMPACT...WINTER DRIVING CONDITIONS ARE POSSIBLE DURING THE
  TUESDAY MORNING COMMUTE. THUS RESIDENTS SHOULD BE PREPARED TO
  LEAVE FOR WORK EARLIER THAN NORMAL ON TUESDAY TO ALLOW FOR
  POSSIBLE DELAYS DUE TO SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE
WINTER WEATHER. IF YOU MUST TRAVEL IN THE WATCH AREA...CARRY AN
EXTRA FLASHLIGHT...FOOD...WATER...AND BLANKETS IN CASE OF
EMERGENCY. 

&&

$$

WWW.WEATHER.GOV/SEATTLE

521 
WWUS46 KSEW 172019
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
1219 PM PST MON DEC 17 2012

WAZ519-180600-
/O.CAN.KSEW.WS.W.0023.000000T0000Z-121218T0200Z/
/O.EXP.KSEW.BZ.W.0001.000000T0000Z-121217T2000Z/
/O.EXB.KSEW.WW.Y.0044.000000T0000Z-121218T0800Z/
WEST SLOPES CENTRAL CASCADES AND PASSES-
1219 PM PST MON DEC 17 2012

...WINTER WEATHER ADVISORY IN EFFECT ABOVE 1000 FEET UNTIL
MIDNIGHT PST TONIGHT...
...WINTER STORM WARNING IS CANCELLED...
...BLIZZARD WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL MIDNIGHT PST
TONIGHT. THE WINTER STORM WARNING HAS BEEN CANCELLED.

* SOME AFFECTED LOCATIONS...STEVEN PASS...SNOQUALMIE PASS...WHITE
  PASS...PARADISE ON MOUNT RAINIER. 

* SNOW ACCUMULATIONS...AN ADDITIONAL 5 TO 10 INCHES IS LIKELY
  THROUGH THIS EVENING. THE HEAVIEST AMOUNTS WILL LIKELY BE NEAR
  STEVENS PASS.

* MAIN IMPACT...EXPECT WINTER WEATHER DRIVING CONDITIONS.

FOR THE STATUS OF HURRICANE RIDGE ROAD...CALL 360-565-3131 OR
VISIT WWW.NPS.GOV/OLYM/INDEX.HTM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS FREEZING RAIN AND SNOW OCCURRING AT
THE SAME TIME. WHILE THE WEATHER WILL BE SIGNIFICANT...THE WORD
ADVISORY MEANS THAT LIFE THREATENING WINTER WEATHER IS NOT
EXPECTED.

&&

$$

WAZ518-180600-
/O.CAN.KSEW.WS.W.0023.000000T0000Z-121218T0200Z/
/O.EXB.KSEW.WW.Y.0044.000000T0000Z-121218T0800Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
1219 PM PST MON DEC 17 2012

...WINTER WEATHER ADVISORY IN EFFECT ABOVE 1000 FEET UNTIL
MIDNIGHT PST TONIGHT...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL MIDNIGHT PST
TONIGHT. THE WINTER STORM WARNING HAS BEEN CANCELLED.

* SOME AFFECTED LOCATIONS...MOUNT BAKER.

* SNOW ACCUMULATION...AN ADDITIONAL 5 TO 10 INCHES OF SNOW IS
  LIKELY THROUGH THIS EVENING.

* MAIN IMPACT...EXPECT WINTER WEATHER DRIVING CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS FREEZING RAIN AND SNOW OCCURRING AT
THE SAME TIME. WHILE THE WEATHER WILL BE SIGNIFICANT...THE WORD
ADVISORY MEANS THAT LIFE THREATENING WINTER WEATHER IS NOT
EXPECTED.

&&

$$

WAZ513-180600-
/O.EXP.KSEW.BZ.W.0001.000000T0000Z-121217T2000Z/
/O.EXT.KSEW.WW.Y.0044.000000T0000Z-121218T0800Z/
OLYMPICS-
1219 PM PST MON DEC 17 2012

...WINTER WEATHER ADVISORY NOW IN EFFECT ABOVE 1000 FEET UNTIL
MIDNIGHT PST TONIGHT...
...BLIZZARD WARNING HAS EXPIRED...

* SOME AFFECTED LOCATIONS...HURRICANE RIDGE.

* SNOW ACCUMULATIONS...AN ADDITIONAL 5 TO 10 INCHES IS LIKELY
  THROUGH THIS EVENING.

* MAIN IMPACT...HURRICANE RIDGE ROAD MIGHT BE CLOSED. FOR THE
  STATUS OF HURRICANE RIDGE ROAD...CALL 360-565-3131 OR VISIT
  WWW.NPS.GOV/OLYM/INDEX.HTM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS FREEZING RAIN AND SNOW OCCURRING AT
THE SAME TIME. WHILE THE WEATHER WILL BE SIGNIFICANT...THE WORD
ADVISORY MEANS THAT LIFE THREATENING WINTER WEATHER IS NOT
EXPECTED.

&&

$$

WAZ505>507-510-180600-
/O.UPG.KSEW.WS.A.0019.121218T0600Z-121218T2000Z/
/O.NEW.KSEW.WW.Y.0045.121218T0600Z-121218T2000Z/
EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-ADMIRALTY INLET AREA-
1219 PM PST MON DEC 17 2012

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
NOON PST TUESDAY...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 10 PM THIS
EVENING TO NOON PST TUESDAY. THE WINTER STORM WATCH IS NO LONGER
IN EFFECT.

* SOME AFFECTED LOCATIONS...STANWOOD...OAK HARBOR...EVERETT...
  GOLD BAR...MILL CREEK...LAKE STEVENS...AND CARNATION.

* TIMING...A PUGET SOUND CONVERGENCE ZONE WILL PERSIST THROUGH AT
  LEAST TUESDAY MORNING. PRECIPITATION THAT FALLS LATE THIS
  EVENING THROUGH TUESDAY MORNING WILL MOST LIKELY BE IN THE FORM
  OF SNOW.

* SNOW ACCUMULATIONS...UP TO 3 INCHES. THERE COULD BE LOCALLY HIGHER
  AMOUNTS IF A STRONG CONVERGENCE ZONE DEVELOPS.

* MAIN IMPACT...WINTER DRIVING CONDITIONS ARE POSSIBLE DURING 
  THE TUESDAY MORNING COMMUTE. THUS RESIDENTS SHOULD BE PREPARED 
  TO LEAVE FOR WORK EARLIER THAN NORMAL ON TUESDAY TO ALLOW FOR 
  POSSIBLE DELAYS DUE TO SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS SUCH AS FREEZING RAIN AND SNOW OCCURRING AT
THE SAME TIME. WHILE THE WEATHER WILL BE SIGNIFICANT...THE WORD
ADVISORY MEANS THAT LIFE THREATENING WINTER WEATHER IS NOT
EXPECTED.

&&

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
842 PM PST SAT DEC 15 2012

.SYNOPSIS...A TROUGH OVER WESTERN WASHINGTON WILL SHIFT EAST EARLY
SUNDAY MORNING. RAIN WILL TAPER TO SHOWERS ACROSS THE LOWLANDS BUT
MOUNTAIN SNOW WILL CONTINUE THROUGH THE NIGHT...HEAVY AT TIMES.
ANOTHER MUCH STRONGER STORM WILL IMPACT THE REGION SUNDAY NIGHT AND
MONDAY. THIS STORM WILL GIVE THE POSSIBILITY OF HIGH WINDS ACROSS
WESTERN WASHINGTON AS WELL AS HEAVY SNOW IN THE MOUNTAINS. A COLDER
AIR MASS WILL FOLLOW THIS SYSTEM MONDAY NIGHT...WITH SNOW LEVELS
PREDICTED TO PLUMMET TO NEAR SEA LEVEL BY TUESDAY MORNING. WEAKER
SYSTEMS WILL BRING PERIODS OF RAIN OR SHOWERS TO THE REGION
WEDNESDAY INTO NEXT WEEKEND.

&&

.SHORT TERM...SURFACE OBSERVATIONS...SATELLITE AND RADAR DATA ALL
SHOW THE FRONT MOVING THROUGH THE CASCADES THIS EVENING. FLOW HAS
TURNED ONSHORE...PRECIPITATION HAS BECOME SHOWERY IN NATURE AND THE
AIR MASS ALOFT IS DESTABILIZING. THE SHOWERY REGIME WILL CONTINUE
OVERNIGHT AND THERE IS A POTENTIAL THAT A BRIEF PUGET SOUND
CONVERGENCE ZONE THAT IS FORMING ROM THE NORTHEASTERN OLYMPICS INTO
WESTERN SKAGIT COUNTY WILL BRIEFLY SINK SOUTH TO JUST NORTH OF
EVERETT THIS EVENING BEFORE LIFTING BACK TO THE NORTH AND
DISSIPATING LATE. ONSHORE FLOW TONIGHT INTO SUNDAY MORNING WILL KEEP
SNOW SHOWERS GOING IN THE MOUNTAINS WITH ADDITIONAL SNOWFALL
ACCUMULATIONS OF 4 TO 8 INCHES. THIS IS ON TOP OF THE 4 TO 8 INCHES
THAT HAVE FALLEN SINCE NOON TODAY. WILL MAINTAIN THE WINTER WEATHER
ADVISORY THAT IS IN EFFECT UNTIL NOON SUNDAY.

THE BIG INTEREST NOW IS THE BROAD 996 MB LOW NEAR 46N 155W THAT IS
EXPECTED TO DEVELOP AT THE LEFT EXIT REGION OF A 170 KT 300 MB JET
IN THE CENTRAL PACIFIC. UPPER LEVEL DIVERGENCE AND STRONG
BAROCLINICITY WITH A FRONTAL BAND THAT EXTENDS ESE FROM THE LOW TO
OFF THE FAR NORTHWESTERN CALIFORNIA COASTAL WATERS WILL FEED THE LOW
FOR A WHILE...ALLOWING IT TO DEVELOP TO 970-975 MB AS IT MOVES EAST
TO NEAR 48N 130W PER THE GFS...UKMO...ECMWF...AND CANADIAN GEM
SOLUTIONS. EAST OF THAT POINT THE LOW LOSES ITS UPPER LEVEL FORCING
WITH THE JET MOVING TOWARD CENTRAL OREGON...AND IT SLOWLY FILLS TO
979 MB AS OT MOVES ONSHORE NEAR CAPE FLATTERY 12Z MONDAY. THE LOW
FILLS FURTHER TO AROUND 988 MB AS IT CROSSES THE NORTH CASCADES 18Z
MONDAY. THE 00Z NAM12 HAS GOOD CONTINUITY BY BEING A LITTLE DEEPER
WITH THE LOW AND 3-6 HOURS FASTER THAN THE GLOBAL MODELS.

THE TIMING OF THE LOW IS CRITICAL TO THE POTENTIAL FOR TIDAL STORM
SURGE FLOODING ACROSS THE INLAND WATERS. GLOBAL MODELS SHOW A GOOD
DEAL OF RISK OF THE TIDAL SURGE WITH AIR PRESSURE CONTRIBUTING TO
ABOUT 2 FOOT ANOMALIES DURING THE 8 TO 9 AM HIGH TIDE AND POSSIBLE 8
TO 11 FT WIND WAVES THROUGH THE STRAIT OF JUAN DE FUCA BEHIND THE
LOW ON TOP OF THE STORM TIDE.

THERE CONTINUES TO BE A RISK OF HIGH WINDS ACROSS THE ENTIRE AREA
WITH THIS STORM...THE COAST AND NORTH INTERIOR AHEAD OF THE LOW AND
EVERYWHERE WITH THE BENT BACK OCCLUSION AND PRESSURE RISES BEHIND
THE LOW. THE RISK FOR THE STRONGEST WIND IS ON THE CENTRAL COAST
WITH THE BENT BACK OCCLUSION AND PRESSURE RISES MONDAY MORNING WITH
SOME GUSTS TO 70 MPH POSSIBLE. THE REMAINDER OF THE AREA WILL LIKELY
SEE MORE OF A MARGINAL HIGH WIND EVENT...STILL ENOUGH TO TOPPLE SOME
TREES AND CAUSE POWER OUTAGES. THE STORM WILL BE WEAKENING AS IT
MOVES THROUGH THE AREA...SO IT WILL NOT LIKELY BE THE SAME MAGNITUDE
AS THE HANUKKAH EVE WIND STORM THAT HIT THE AREA IN DECEMBER 2006.

VERY HEAVY SNOW ACCUMULATIONS ARE LIKELY IN THE MOUNTAINS...STARTING
WITH THE WARM FRONT LATE SUNDAY AFTERNOON THROUGH SUNDAY
NIGHT...THEN WITH THE STRONG ONSHORE FLOW BEHIND THE LOW LATE SUNDAY
NIGHT INTO MONDAY NIGHT. THE MOUNTAINS COULD SEE 1.5 TO 3 FEET
SNOWFALL AMOUNTS SUNDAY AFTERNOON THROUGH MONDAY NIGHT. THE SNOW AS
THE LOW PASSES AND MOVES OFF TO THE EAST WILL LIKELY BE ACCOMPANIED
BY STRONG WESTERLY WINDS RESULTING IN BLIZZARD LIKE CONDITIONS AT
TIMES MONDAY MORNING.

THE HIGH WIND...WINTER STORM...AND COASTAL FLOOD WATCHES WILL BE
CONTINUED THIS EVENING.

COLD AIR ALOFT RUSHES INTO THE AREA BEHIND MONDAYS LOW. BY MONDAY
NIGHT SNOW LEVELS DROP TO SEA LEVEL TO 500 FEET IN THE LOWLANDS AS
THE AIR MASS STARTS DRYING. BUT MODELS...ESPECIALLY THE 00Z
NAM12...DO SHOW A CONVERGENCE ZONE FORMING LATER MONDAY NIGHT INTO
TUESDAY MORNING THAT COULD GIVE SOME ACCUMULATIONS OVER NORTH KING
AND SOUTH SNOHOMISH COUNTIES. WILL NEED TO EVALUATE INCOMING
GUIDANCE FURTHER BEFORE MAKING ANY FORECAST CHANGES.

CURRENT FORECASTS LOOK GOOD. NO UPDATES ARE PLANNED THIS EVENING.
ALBRECHT

.LONG TERM...FROM THE AFTERNOON FORECAST DISCUSSION...A COLD UPPER
TROUGH WILL BEGIN TO MOVE EAST OF THE REGION TUESDAY NIGHT WITH
DECREASING SHOWERS. LITTLE BREAK IS EXPECTED AS A WARM FRONT
ASSOCIATED WITH THE NEXT FRONTAL SYSTEM WILL SPREAD RAIN BACK INTO
THE AREA ON WEDNESDAY. THE FRONT OCCLUDES AS IT MOVES INTO WRN WA
WITH ONLY SLIGHT RISES IN SNOW LEVELS. THE ASSOCIATED COLD FRONT
WILL PUSH INTO THE AREA WEDNESDAY EVENING THEN WEAKEN AND SPLIT WITH
THE STRONGER PORTION HEADING SWD.

A LARGE UPPER LOW CENTERED BETWEEN 130-140 W WILL STALL THROUGH THE
REST OF THE WEEK. THIS WILL KEEP WRN WA UNDER MOIST SLY OR SW FLOW.
MODELS SHOW MOSTLY WEAK SYSTEMS TO BRING RAIN OR SHOWERS AT TIMES TO
THE AREA. NO CHANGES TO THE EXTENDED. MERCER

&&

.HYDROLOGY...FROM THE AFTERNOON FORECAST DISCUSSION...FLOODING IS
NOT EXPECTED ON AREA RIVERS THROUGH THE END OF NEXT WEEK. MERCER

&&

.AVIATION...SCATTERED SHOWERS WILL CONTINUE OVERNIGHT BEHIND A
VIGOROUS COLD FRONT THAT MOVED THROUGH WESTERN WA. STRONG
POST-FRONTAL ONSHORE FLOW WILL GRADUALLY RELAX OVERNIGHT...ALLOWING
THE GUSTY W-SW SURFACE WINDS TO EASE TOWARD DAYBREAK. SURFACE
GRADIENTS WILL BE TURNING OFFSHORE BY SUNDAY MORNING AS A DEEPENING
SURFACE LOW APPROACHES THE REGION. RAIN WILL SPREAD ONSHORE ONCE
AGAIN AHEAD A STRONG FRONTAL SYSTEM DURING THE DAY SUNDAY. WINDS
ALOFT WILL BECOME RATHER STRONG BY LATE SUNDAY AFTERNOON WITH
SOUTHERLY WINDS OF 50-60 KNOTS NEAR 5000 FEET POSSIBLE BY 00Z.

KSEA...KSEA IS SOMEWHAT SHADOWED BY THE OLYMPICS THIS EVENING WITH
ONLY A FEW SHOWERS IN POST-FRONTAL ONSHORE FLOW. CEILINGS ARE MOSTLY
MVFR BUT EXPECTED TO IMPROVE TOWARD DAYBREAK. BREEZY SW WINDS WILL
GRADUALLY SUBSIDE LATE TONIGHT. GRADIENTS TURN OFFSHORE BY 18Z WITH
E-SE SURFACE WINDS RISING 10 TO 20 KNOTS WITH HIGHER GUSTS AFTER
00Z. WINDS ALOFT WILL BECOME STRONG AS NOTED ABOVE. RAIN
REDEVELOPING BY EARLY AFTERNOON WITH MVFR RETURNING AFTER 00Z MONDAY.

&&

.MARINE...SMALL CRAFT ADVISORIES CONTINUE OVERNIGHT ALL WATERS WITH
POST FRONTAL ONSHORE FLOW IN THE WAKE OF A FRONT THAT SWEPT THROUGH
EARLIER IN THE DAY.

A RATHER STRONG FRONTAL SYSTEM WILL REACH THE AREA LATE SUNDAY
AFTERNOON AND EVENING. THE FRONT ITSELF SHOULD BE QUITE
STRONG...WITH SE GALES IN ALL THE NORMAL SPOTS BUT QUICKLY SHIFTING
TO SW GALES OVER THE COASTAL WATERS. A SURFACE LOW AROUND 977
MILLIBARS SHOULD REACH THE COAST LATER SUNDAY NIGHT. THE LOW OUGHT
TO BE FILLING NEAR KBLI BY MIDDAY MONDAY. THIS IS A GOOD TRACK TO
GIVE A BURST OF 40-50KT WINDS BEHIND THE LOW FOR THE COASTAL WATERS
AND STRAIT. HAVE MAINTAINED THE PRESENT SUITE OF STORM WATCHES FOR
THE COASTAL WATERS...AND SHOULD THE 00Z RUNS OF THE UW MESO MODELS
CONTINUE PREVIOUS TRENDS THEN I WOULD BE INCLINED TO ISSUE STORM
WARNINGS FOR THE COASTAL WATERS/STRAIT AND GALES FOR THE REMAINING
WATERS WITH THE MORNING FORECAST PACKAGE.

THE DEEP LOW MONDAY MORNING WILL LIKELY GIVE A STORM SURGE OF A
COUPLE FOOT TIDAL ANOMALY SO TIDAL OVERFLOW IS LIKELY DURING HIGH
TIDE MONDAY MORNING IN THE INTERIOR WATERS AROUND 8AM. THE TIMING IS
DIFFERENT ON THE COAST WHERE THE FIRST HIGH TIDE AROUND 3AM WILL
HAVE SE GALES AND THE WAVES STILL BUILDING...THEN LOW TIDE MAY
COINCIDE WITH THE HIGHEST TIDAL ANOMALY WHICH HELPS FOR AWHILE. THE
MONDAY AFTERNOON HIGH TIDE WILL SEE HIGH SURF OF 25 TO 30 FEET
COASTAL AREAS. 27

&&

.AVALANCHE...FROM THE AFTERNOON FORECAST DISCUSSION...STRONG WINDS
AND INCREASING SNOW SHOULD BEGIN IN THE OLYMPICS AND CASCADES AS THE
FRONT APPROACHES SUNDAY AFTERNOON. WESTERLY OROGRAPHIC FLOW AND
HEAVY SNOW SHOULD FOLLOW THE FRONT AND THE STRONG SURFACE LOW
PRESSURE SYSTEM SUNDAY NIGHT AND MONDAY. WINDS...HEAVY SNOW... RAPID
LOADING...TEMPORARY WEAK STORM LAYERS...PREVIOUS LOW DENSITY LAYERS
AND CRUSTS SHOULD ALL HELP TO CAUSE DEEP NEW WIND AND STORM SLAB
LAYERS AND A HIGH AVALANCHE DANGER SUNDAY NIGHT AND MONDAY. THESE
CONDITIONS SHOULD BE SEEN IN THE OLYMPICS AND CASCADES FROM MT BAKER
TO MT HOOD. AN AVALANCHE WATCH IS IN EFFECT FOR SUNDAY NIGHT AND
MONDAY. PLEASE SEE NWAC.US FOR DETAILS. FERBER

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...WINTER WEATHER ADVISORY IN EFFECT FOR THE OLYMPICS AND CASCADES
     UNTIL NOON SUNDAY.

     WINTER STORM WATCH IN EFFECT FOR THE OLYMPICS AND CASCADES FROM
     NOON SUNDAY THROUGH LATE MONDAY NIGHT.

     HIGH WIND WATCH ALL ZONES EXCEPT MOUNTAINS.

     COASTAL FLOOD WATCH FOR THE NORTH AND CENTRAL COAST LATE SUNDAY
     NIGHT THROUGH MONDAY NIGHT AND FOR THE REMAINDER OF WESTERN WA
     SHORELINES MONDAY MORNING.

     AVALANCHE WATCH OLYMPICS AND CASCADES LATE SUNDAY AND
     MONDAY.

PZ...SMALL CRAFT ADVISORY ALL WATERS TONIGHT.

     SMALL CRAFT ADVISORY GRAYS HARBOR FOR ROUGH BAR.

     STORM WATCH COAST AND STRAIT OF JUAN DE FUCA AND GALE WATCH
     FOR THE REMAINING WATERS.

&&

WWW.WEATHER.GOV/SEATTLE

FOR THE GRAPHICAL AFD...VISIT
WWW.WEATHER.GOV/SEATTLE/GAFD/LATEST_WEBAFD.HTML