Alert archive / Washington / Winter Storm Warnings in 2011

Winter Storm Warning 1, NWS Seattle, WA

January 11, 2011

NWS Seattle, WA issued this winter storm warning at Jan 11, 2011, 3:36 AM PST. It took effect at Jan 11, 2011, 4:00 PM PST. It was in force for 24 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 11, 2011, 3:36 AM PST (11:36 UTC)
In effect from
Jan 11, 2011, 4:00 PM PST
Expired
Jan 12, 2011, 4:00 PM PST
In force
24 hr
Issued by
NWS Seattle, WA

The text

As transmitted, in the capitals the NWS used until 2016.

532 
WWUS46 KSEW 111136
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
336 AM PST TUE JAN 11 2011

WAZ503-511-111945-
/O.UPG.KSEW.WS.A.0001.110111T2100Z-110112T1800Z/
/O.NEW.KSEW.WS.W.0001.110112T0000Z-110112T1500Z/
WESTERN WHATCOM COUNTY-HOOD CANAL AREA-
336 AM PST TUE JAN 11 2011

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
7 AM PST WEDNESDAY FOR THE HOOD CANAL AREA AND WESTERN WHATCOM
COUNTY...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WARNING FOR THE HOOD CANAL AREA AND WESTERN WHATCOM COUNTY FOR HEAVY
SNOW...WHICH IS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM PST
WEDNESDAY. THE WINTER STORM WATCH FOR THIS AREA IS NO LONGER IN EFFECT.

* ACCUMULATIONS...THREE TO SIX INCHES ARE LIKELY.

* TIMING...SNOW WILL BEGIN LATE THIS AFTERNOON AND CONTINUE INTO
  WEDNESDAY MORNING BEFORE TURNING TO RAIN. 

* IMPACTS...TRAVEL WILL BE SIGNIFICANTLY IMPEDED.

* FREEZING RAIN...THERE IS A POSSIBILITY OF FREEZING RAIN DURING
  THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN WORSE FOR
  DRIVERS THAN SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.

&&

$$

WAZ518-519-111945-
/O.UPG.KSEW.WS.A.0001.110112T0200Z-110113T0000Z/
/O.NEW.KSEW.WS.W.0001.110112T0300Z-110113T0000Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
336 AM PST TUE JAN 11 2011

...WINTER STORM WARNING IN EFFECT FROM 7 PM THIS EVENING TO 4 PM
PST WEDNESDAY FOR THE NORTHERN AND CENTRAL CASCADES...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WARNING FOR THE NORTHERN AND CENTRAL CASCADES FOR HEAVY
SNOW...WHICH IS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM PST
WEDNESDAY. THE WINTER STORM WATCH FOR THIS AREA IS NO LONGER IN
EFFECT.

* ACCUMULATIONS...ONE TO TWO FEET OF NEW SNOW IS POSSIBLE THIS
  EVENING THROUGH WEDNESDAY AFTERNOON. 

* SNOW LEVELS...THE SNOW LEVEL WILL RISE TO AROUND 4000 FT ON WEDNESDAY
  BUT EASTERLY FLOW WILL KEEP PASS TEMPERATURES BELOW FREEZING
  UNTIL LATE IN THE DAY. 

* FREEZING RAIN...THERE IS THE POSSIBILITY OF FREEZING RAIN AT
  SNOQUALMIE PASS ON WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.

&&

$$

WAZ504-512-516-517-111945-
/O.UPG.KSEW.WS.A.0001.110111T2100Z-110112T1800Z/
/O.NEW.KSEW.WW.Y.0006.110111T2100Z-110112T0600Z/
SOUTHWEST INTERIOR-LOWER CHEHALIS VALLEY AREA-NORTH COAST-
CENTRAL COAST-
336 AM PST TUE JAN 11 2011

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO
10 PM PST THIS EVENING FOR THE COAST AND SOUTHWEST INTERIOR...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR THE COAST AND SOUTHWEST INTERIOR FOR SNOW...WHICH
IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 PM PST THIS EVENING.
THE WINTER STORM WATCH FOR THIS AREA IS NO LONGER IN EFFECT.

* ACCUMULATIONS...ONE TO THREE INCHES OF SNOW ARE POSSIBLE BY THIS
  EVENING. 

* TIMING...SNOW WILL BEGIN THIS AFTERNOON AND CHANGE TO RAIN IN
  THE EVENING. 

* IMPACTS...EXPECT WINTER WEATHER TRAVEL CONDITIONS.

* MAJOR IMPACT...SNOW IS LIKELY TO START FALLING DURING THE AFTERNOON
  COMMUTE PERIOD. PEOPLE SHOULD SERIOUSLY CONSIDER FINISHING THEIR
  AFTERNOON COMMUTE EARLY TODAY IF AT ALL POSSIBLE.

* FREEZING RAIN...THERE IS A POSSIBILITY OF FREEZING RAIN 
  DURING THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN 
  WORSE FOR DRIVERS THAN SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WAZ001-505>510-514-515-111945-
/O.UPG.KSEW.WS.A.0001.110111T2100Z-110112T1800Z/
/O.NEW.KSEW.WW.Y.0006.110112T0000Z-110112T1200Z/
SAN JUAN COUNTY-EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-
336 AM PST TUE JAN 11 2011

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
4 AM PST WEDNESDAY FOR THE SAN JUAN ISLANDS...WESTERN SKAGIT
COUNTY...ADMIRALTY INLET AREA...EVERETT AND VICINITY...EAST PUGET SOUND
LOWLANDS...SEATTLE/BREMERTON AREA...TACOMA AREA...AND STRAIT OF
JUAN DE FUCA...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR THE SAN JUAN ISLANDS...WESTERN SKAGIT
COUNTY...ADMIRALTY INLET AREA...EAST PUGET SOUND LOWLANDS...EVERETT
AND VICINITY...SEATTLE/BREMERTON AREA...TACOMA AREA...AND STRAIT
OF JUAN DE FUCA FOR SNOW...WHICH IS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 4 AM PST WEDNESDAY. THE WINTER STORM WATCH FOR THIS
AREA IS NO LONGER IN EFFECT.

* ACCUMULATIONS...ONE TO THREE INCHES OF SNOW ARE POSSIBLE.
  LOCALLY HEAVIER ACCUMULATIONS ARE POSSIBLE NEAR THE CASCADE
  FOOTHILLS. 

* TIMING...SNOW WILL BEGIN LATE THIS AFTERNOON AND CHANGE TO RAIN
  AFTER MIDNIGHT. 

* IMPACTS...EXPECT WINTER WEATHER TRAVEL CONDITIONS.

* MAJOR IMPACT...SNOW IS LIKELY TO START FALLING DURING THE
  AFTERNOON COMMUTE PERIOD. PEOPLE SHOULD SERIOUSLY CONSIDER
  FINISHING THEIR AFTERNOON COMMUTE EARLY TODAY IF AT ALL
  POSSIBLE.

* FREEZING RAIN...THERE IS A POSSIBILITY OF FREEZING RAIN 
  DURING THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN 
  WORSE FOR DRIVERS THAN SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WAZ513-111945-
/O.UPG.KSEW.WS.A.0001.110112T0200Z-110113T0000Z/
/O.NEW.KSEW.WW.Y.0006.110112T0000Z-110112T2100Z/
OLYMPICS-
336 AM PST TUE JAN 11 2011

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
1 PM PST WEDNESDAY FOR THE OLYMPICS...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR THE OLYMPICS FOR SNOW...WHICH IS IN EFFECT
FROM 4 PM THIS AFTERNOON TO 1 PM PST WEDNESDAY. THE WINTER STORM
WATCH FOR THE OLYMPICS IS NO LONGER IN EFFECT.

* ACCUMULATIONS...SIX TO FOURTEEN INCHES OF SNOW ARE POSSIBLE THIS
  AFTERNOON THROUGH MIDDAY WEDNESDAY. THE SNOW LEVEL WILL RISE TO
  AROUND 4500 FEET ON WEDNESDAY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WWW.WEATHER.GOV/SEATTLE
4 follow-up statements
503 
WWUS46 KSEW 111859
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
1059 AM PST TUE JAN 11 2011

WAZ503-511-120600-
/O.CON.KSEW.WS.W.0001.110112T0000Z-110112T1500Z/
WESTERN WHATCOM COUNTY-HOOD CANAL AREA-
1059 AM PST TUE JAN 11 2011

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 7 AM PST WEDNESDAY FOR THE HOOD CANAL AREA AND
WESTERN WHATCOM COUNTY...

A WINTER STORM WARNING FOR THE HOOD CANAL AREA AND WESTERN WHATCOM
COUNTY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM PST
WEDNESDAY.

* ACCUMULATIONS...THREE TO SIX INCHES LIKELY.

* TIMING...SNOW WILL BEGIN LATE THIS AFTERNOON AND CONTINUE 
  INTO WEDNESDAY MORNING BEFORE TURNING TO RAIN. 

* IMPACTS...TRAVEL WILL BE SIGNIFICANTLY IMPEDED.

* FREEZING RAIN...THERE IS A POSSIBILITY OF BRIEF FREEZING RAIN
  DURING THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN WORSE
  FOR MOTORISTS THAN SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.

&&

$$

WAZ518-519-120600-
/O.CON.KSEW.WS.W.0001.110112T0300Z-110113T0000Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
1059 AM PST TUE JAN 11 2011

...WINTER STORM WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 4 PM PST WEDNESDAY FOR THE WEST SLOPES OF THE NORTH AND CENTRAL
CASCADES...

A WINTER STORM WARNING FOR THE WEST SLOPES OF THE NORTH AND
CENTRAL CASCADES REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM
PST WEDNESDAY.

* ACCUMULATIONS...ONE TO TWO FEET OF NEW SNOW IS LIKELY THIS
  EVENING THROUGH WEDNESDAY AFTERNOON.

* SNOW LEVELS...THE SNOW LEVEL WILL RISE TO AROUND 4000 FT ON
  WEDNESDAY BUT EASTERLY FLOW WILL KEEP PASS TEMPERATURES 
  BELOW FREEZING UNTIL LATE IN THE DAY. 

* FREEZING RAIN...THERE IS THE POSSIBILITY OF FREEZING RAIN AT 
  SNOQUALMIE PASS ON WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.

&&

$$

WAZ504-512-516-517-120600-
/O.CON.KSEW.WW.Y.0006.110111T2100Z-110112T0600Z/
SOUTHWEST INTERIOR-LOWER CHEHALIS VALLEY AREA-NORTH COAST-
CENTRAL COAST-
1059 AM PST TUE JAN 11 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR THE COAST THROUGH THE SOUTHWEST INTERIOR...

A WINTER WEATHER ADVISORY FOR THE COAST THROUGH THE SOUTHWEST
INTERIOR REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING.

* ACCUMULATIONS...ONE TO THREE INCHES OF SNOW LIKELY THIS EVENING.

* TIMING...SNOW WILL BEGIN THIS AFTERNOON AND CHANGE TO RAIN IN 
  THE EVENING.

* IMPACTS...EXPECT WINTER WEATHER TRAVEL CONDITIONS.

* MAJOR IMPACT...SNOW IS LIKELY TO START FALLING DURING THE
  AFTERNOON COMMUTE PERIOD. PEOPLE SHOULD SERIOUSLY CONSIDER 
  FINISHING THEIR AFTERNOON COMMUTE EARLY TODAY IF AT ALL 
  POSSIBLE.

* FREEZING RAIN...THERE IS A POSSIBILITY OF BRIEF FREEZING RAIN
  DURING THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN WORSE
  FOR MOTORISTS THAN SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WAZ001-505>510-514-515-120600-
/O.CON.KSEW.WW.Y.0006.110112T0000Z-110112T1200Z/
SAN JUAN COUNTY-EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-
1059 AM PST TUE JAN 11 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 4 AM PST WEDNESDAY FOR THE SAN JUAN ISLANDS...WESTERN
SKAGIT COUNTY...ADMIRALTY INLET...EVERETT AND VICINITY...EAST
PUGET SOUND LOWLANDS...SEATTLE BREMERTON AREA...TACOMA AREA AND
STRAIT OF JUAN DE FUCA...

A WINTER WEATHER ADVISORY FOR THE SAN JUAN ISLANDS...WESTERN
SKAGIT COUNTY...ADMIRALTY INLET...EVERETT AND VICINITY...EAST
PUGET SOUND LOWLANDS...SEATTLE BREMERTON AREA...TACOMA AREA AND
STRAIT OF JUAN DE FUCA REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON
TO 4 AM PST WEDNESDAY.

* ACCUMULATIONS...ONE TO THREE INCHES OF SNOW LIKELY. LOCALLY
  HEAVIER ACCUMULATIONS ARE POSSIBLE NEAR THE CASCADE FOOTHILLS.

* TIMING...SNOW WILL BEGIN LATE THIS AFTERNOON AND CHANGE TO 
  RAIN AFTER MIDNIGHT. 

* IMPACTS...EXPECT WINTER WEATHER TRAVEL CONDITIONS.

* MAJOR IMPACT...SNOW IS LIKELY TO START FALLING DURING THE 
  AFTERNOON COMMUTE PERIOD. PEOPLE SHOULD SERIOUSLY CONSIDER 
  FINISHING THEIR AFTERNOON COMMUTE EARLY TODAY IF AT ALL 
  POSSIBLE.

* FREEZING RAIN...THERE IS A POSSIBILITY OF BRIEF FREEZING RAIN
  DURING THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN WORSE
  FOR MOTORISTS THAN SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WAZ513-120600-
/O.CON.KSEW.WW.Y.0006.110112T0000Z-110112T2100Z/
OLYMPICS-
1059 AM PST TUE JAN 11 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 1 PM PST WEDNESDAY FOR THE OLYMPIC MOUNTAINS...

A WINTER WEATHER ADVISORY FOR THE OLYMPIC MOUNTAINS REMAINS IN
EFFECT FROM 4 PM THIS AFTERNOON TO 1 PM PST WEDNESDAY.

* ACCUMULATIONS...SIX TO FOURTEEN INCHES OF SNOW ARE POSSIBLE 
  THIS AFTERNOON THROUGH MIDDAY WEDNESDAY. THE SNOW LEVEL WILL 
  RISE TO AROUND 4500 FEET ON WEDNESDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
33
WWW.WEATHER.GOV/SEATTLE
163 
WWUS46 KSEW 120519
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
919 PM PST TUE JAN 11 2011

WAZ518-519-121330-
/O.CON.KSEW.WS.W.0001.000000T0000Z-110113T0000Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
919 PM PST TUE JAN 11 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST
WEDNESDAY FOR THE CASCADES...

A WINTER STORM WARNING FOR THE CASCADES REMAINS IN EFFECT UNTIL 4
PM PST WEDNESDAY.

* ACCUMULATIONS...ONE TO TWO FEET OF NEW SNOW IS LIKELY TONIGHT
  THROUGH WEDNESDAY AFTERNOON.

* SNOW LEVELS...THE SNOW LEVEL WILL RISE TO AROUND 4000 FT ON 
  WEDNESDAY BUT EASTERLY FLOW WILL KEEP PASS TEMPERATURES 
  BELOW FREEZING UNTIL LATE IN THE DAY.

* FREEZING RAIN...THERE IS THE POSSIBILITY OF FREEZING RAIN AT 
  SNOQUALMIE PASS ON WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.

&&

$$

WAZ503-511-121330-
/O.CON.KSEW.WS.W.0001.000000T0000Z-110112T1500Z/
WESTERN WHATCOM COUNTY-HOOD CANAL AREA-
919 PM PST TUE JAN 11 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST
WEDNESDAY FOR THE HOOD CANAL AREA AND WESTERN WHATCOM COUNTY...

A WINTER STORM WARNING FOR THE HOOD CANAL AREA AND WESTERN WHATCOM
COUNTY REMAINS IN EFFECT UNTIL 7 AM PST WEDNESDAY.

* ACCUMULATIONS...FOUR TO EIGHT INCHES LIKELY IN THE HOOD CANAL
  AREA. THREE TO FIVE INCHES LIKELY IN WESTERN WHATCOM COUNTY.

* TIMING...SNOW WILL CONTINUE INTO WEDNESDAY MORNING BEFORE
  TURNING TO RAIN.

* IMPACTS...TRAVEL WILL BE SIGNIFICANTLY IMPEDED.

* FREEZING RAIN...THERE IS A POSSIBILITY OF BRIEF FREEZING RAIN 
  DURING THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN 
  WORSE FOR MOTORISTS THAN SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.

&&

$$

WAZ001-505>510-514-515-121300-
/O.EXT.KSEW.WW.Y.0006.000000T0000Z-110112T1300Z/
SAN JUAN COUNTY-EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-
919 PM PST TUE JAN 11 2011

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 AM PST WEDNESDAY
FOR MOST OF THE WESTERN WASHINGTON LOWLANDS...

THE WINTER WEATHER ADVISORY FOR MOST OF THE WESTERN WASHINGTON
LOWLANDS IS NOW IN EFFECT UNTIL 5 AM PST WEDNESDAY.

* ACCUMULATIONS...ONE TO THREE INCHES OF SNOW LIKELY. LOCALLY 
  HEAVIER ACCUMULATIONS ARE POSSIBLE NEAR THE CASCADE FOOTHILLS. 

* TIMING...SNOW WILL CHANGE TO RAIN AFTER MIDNIGHT IN THE SOUTH
  AND BY 4 AM IN THE NORTH.

* IMPACTS...EXPECT WINTER WEATHER TRAVEL CONDITIONS.

* FREEZING RAIN...THERE IS A POSSIBILITY OF BRIEF FREEZING RAIN 
  DURING THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN 
  WORSE FOR MOTORISTS THAN SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WAZ504-512-516-517-120800-
/O.EXT.KSEW.WW.Y.0006.000000T0000Z-110112T0800Z/
SOUTHWEST INTERIOR-LOWER CHEHALIS VALLEY AREA-NORTH COAST-
CENTRAL COAST-
919 PM PST TUE JAN 11 2011

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT PST
TONIGHT FOR THE SOUTHWEST INTERIOR AND COAST...

THE WINTER WEATHER ADVISORY FOR THE SOUTHWEST INTERIOR AND COAST IS
NOW IN EFFECT UNTIL MIDNIGHT PST TONIGHT.

* ACCUMULATIONS...ONE TO THREE INCHES OF SNOW LIKELY.

* TIMING...SNOW WILL CHANGE TO RAIN BY MIDNIGHT.

* IMPACTS...EXPECT WINTER WEATHER TRAVEL CONDITIONS.

* FREEZING RAIN...THERE IS A POSSIBILITY OF BRIEF FREEZING RAIN 
  DURING THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN 
  WORSE FOR MOTORISTS THAN SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WAZ513-121330-
/O.CON.KSEW.WW.Y.0006.000000T0000Z-110112T2100Z/
OLYMPICS-
919 PM PST TUE JAN 11 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST
WEDNESDAY FOR THE OLYMPICS...

A WINTER WEATHER ADVISORY FOR THE OLYMPICS REMAINS IN EFFECT
UNTIL 1 PM PST WEDNESDAY.

* ACCUMULATIONS...SIX TO FOURTEEN INCHES OF SNOW ARE POSSIBLE
  THROUGH MIDDAY WEDNESDAY. THE SNOW LEVEL WILL RISE TO AROUND
  4500 FEET ON WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WWW.WEATHER.GOV/SEATTLE
197 
WWUS46 KSEW 120849
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
1249 AM PST WED JAN 12 2011

WAZ503-511-121700-
/O.EXT.KSEW.WS.W.0001.000000T0000Z-110112T1800Z/
WESTERN WHATCOM COUNTY-HOOD CANAL AREA-
1249 AM PST WED JAN 12 2011

...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 AM PST THIS
MORNING FOR THE HOOD CANAL AREA AND WESTERN WHATCOM COUNTY...

THE WINTER STORM WARNING FOR THE HOOD CANAL AREA AND WESTERN
WHATCOM COUNTY IS NOW IN EFFECT UNTIL 10 AM PST THIS MORNING.

* ACCUMULATIONS...FOUR TO EIGHT INCHES ARE LIKELY.

* TIMING...SNOW WILL CONTINUE BEFORE TURNING TO RAIN LATE THIS
  MORNING.

* IMPACTS...TRAVEL WILL BE SIGNIFICANTLY IMPEDED.

* FREEZING RAIN...THERE IS A POSSIBILITY OF BRIEF FREEZING RAIN 
  DURING THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN 
  WORSE FOR MOTORISTS THAN SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.

&&

$$

WAZ518-519-121700-
/O.CON.KSEW.WS.W.0001.000000T0000Z-110113T0000Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
1249 AM PST WED JAN 12 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON FOR THE NORTHERN AND CENTRAL CASCADES...

A WINTER STORM WARNING FOR THE NORTHERN AND CENTRAL CASCADES REMAINS
IN EFFECT UNTIL 4 PM PST THIS AFTERNOON.

* ACCUMULATIONS...ONE TO TWO FEET OF NEW SNOW IS LIKELY BY THIS
  AFTERNOON.

* SNOW LEVELS...THE SNOW LEVEL WILL RISE TO AROUND 4000 FT ON THIS
  AFTERNOON BUT EASTERLY FLOW WILL KEEP PASS TEMPERATURES BELOW
  FREEZING UNTIL LATE IN THE DAY.

* FREEZING RAIN...THERE IS THE POSSIBILITY OF FREEZING RAIN AT
  SNOQUALMIE PASS TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.

&&

$$

WAZ504-512-121100-
/O.NEW.KSEW.WW.Y.0007.110112T0849Z-110112T1100Z/
SOUTHWEST INTERIOR-LOWER CHEHALIS VALLEY AREA-
1249 AM PST WED JAN 12 2011

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 AM PST EARLY THIS
MORNING FOR THE SOUTHWEST INTERIOR AND LOWER CHEHALIS VALLEY...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR THE THE SOUTHWEST INTERIOR AND LOWER CHEHALIS
VALLEY FOR SNOW AND FREEZING RAIN...WHICH IS IN EFFECT UNTIL 3 AM
PST EARLY THIS MORNING.

* ACCUMULATIONS...ONE TO THREE INCHES OF SNOW.

* TIMING...SNOW WILL CHANGE TO RAIN EARLY THIS MORNING.

* FREEZING RAIN...THERE IS A POSSIBILITY OF FREEZING RAIN DURING
  THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN WORSE FOR
  MOTORISTS THAN SNOW.

* IMPACTS...EXPECT WINTER TRAVEL CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WAZ001-505>510-514-515-121500-
/O.EXT.KSEW.WW.Y.0006.000000T0000Z-110112T1500Z/
SAN JUAN COUNTY-EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-
1249 AM PST WED JAN 12 2011

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 7 AM PST THIS
MORNING FOR SAN JUAN COUNTY...EAST PUGET SOUND LOWLANDS...WESTERN
SKGAIT COUNTY...EVERETT AND VICINITY...SEATTLE/BREMERTON
AREA...TACOMA AREA...ADMIRALTY INLET...AND STRAIT OF JUAN DE
FUCA...

THE WINTER WEATHER ADVISORY FOR SAN JUAN COUNTY...EAST PUGET SOUND
LOWLANDS...WESTERN SKGAIT COUNTY...EVERETT AND
VICINITY...SEATTLE/BREMERTON AREA...TACOMA AREA...ADMIRALTY
INLET...AND STRAIT OF JUAN DE FUCA IS NOW IN EFFECT UNTIL 7 AM PST
THIS MORNING.

* ACCUMULATIONS...ONE TO THREE INCHES OF SNOW. LOCALLY HEAVIER
  ACCUMULATIONS ARE POSSIBLE NEAR THE CASCADE FOOTHILLS AND OVER
  THE HIGHER HILLS AWAY FROM THE WATER.

* TIMING...SNOW WILL CHANGE TO RAIN THIS MORNING. 

* IMPACTS...EXPECT WINTER WEATHER TRAVEL CONDITIONS.

* FREEZING RAIN...THERE IS A POSSIBILITY OF FREEZING RAIN DURING
  THE CHANGE FROM SNOW TO RAIN. FREEZING RAIN IS EVEN WORSE FOR
  MOTORISTS THAN SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WAZ513-121700-
/O.CON.KSEW.WW.Y.0006.000000T0000Z-110112T2100Z/
OLYMPICS-
1249 AM PST WED JAN 12 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST THIS
AFTERNOON FOR THE OLYMPICS...

A WINTER WEATHER ADVISORY FOR THE OLYMPICS REMAINS IN EFFECT UNTIL 1 PM
PST THIS AFTERNOON.

* ACCUMULATIONS...SIX TO FOURTEEN INCHES OF SNOW ARE POSSIBLE
  THROUGH MIDDAY TODAY. THE SNOW LEVEL WILL RISE TO AROUND 4500
  FEET TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WWW.WEATHER.GOV/SEATTLE
626 
WWUS46 KSEW 121648
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
848 AM PST WED JAN 12 2011

WAZ503-511-121800-
/O.CAN.KSEW.WS.W.0001.000000T0000Z-110112T1800Z/
WESTERN WHATCOM COUNTY-HOOD CANAL AREA-
848 AM PST WED JAN 12 2011

...WINTER STORM WARNING IS CANCELLED FOR WESTERN WHATCOM AND HOOD
CANAL AREAS...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS CANCELLED THE WINTER
STORM WARNING FOR WESTERN WHATCOM AND HOOD CANAL AREAS.

HEAVY SNOW HAS ENDED ACROSS WESTERN WHATCOM AND HOOD CANAL AREAS
THIS MORNING. TEMPERATURES WILL REMAIN IN THE UPPER 30S TO 40S
WITH RAIN AT TIMES. ROADWAYS WILL BE SLUSHY THIS MORNING.

$$

WAZ518-519-130000-
/O.CON.KSEW.WS.W.0001.000000T0000Z-110113T0000Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
848 AM PST WED JAN 12 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON FOR THE WEST SLOPES OF THE NORTH AND CENTRAL CASCADES...

A WINTER STORM WARNING FOR THE WEST SLOPES OF THE NORTH AND
CENTRAL CASCADES REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON.

* ACCUMULATIONS...SNOWFALL TOTALS OF ONE TO TWO FEET IS LIKELY
  THROUGH THIS AFTERNOON.

* SNOW LEVELS...THE SNOW LEVEL WILL RISE TO AROUND 4000 FT THIS
  AFTERNOON BUT EASTERLY FLOW WILL KEEP PASS TEMPERATURES BELOW
  FREEZING THROUGH MIDDAY.

* FREEZING RAIN...THERE IS THE POSSIBILITY OF FREEZING RAIN AT 
  SNOQUALMIE PASS TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.

&&

$$

WAZ513-122100-
/O.CON.KSEW.WW.Y.0006.000000T0000Z-110112T2100Z/
OLYMPICS-
848 AM PST WED JAN 12 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST THIS
AFTERNOON FOR THE OLYMPIC MOUNTAINS...

A WINTER WEATHER ADVISORY FOR THE OLYMPIC MOUNTAINS REMAINS IN
EFFECT UNTIL 1 PM PST THIS AFTERNOON.

* ACCUMULATIONS...SNOWFALL TOTALS OF SIX TO FOURTEEN INCHES
  EXPECTED THROUGH MIDDAY. THE SNOW LEVEL WILL RISE TO AROUND 4500
  FEET THIS AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

WWW.WEATHER.GOV/SEATTLE

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Seattle, WA wrote its last area forecast discussion before this winter storm warning went out at Jan 11, 3:30 AM PST, 6 minutes earlier.

Area forecast discussion, Jan 11, 3:30 AM PST, 6 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
330 AM PST TUE JAN 11 2011

.SYNOPSIS...SNOW WILL DEVELOP LATE THIS AFTERNOON OR THIS EVENING AS
MOISTURE SPREADS UP FROM THE SOUTH. SNOW WILL CHANGE TO RAIN LATE
TONIGHT OR WEDNESDAY MORNING ACROSS MOST AREAS. THE MOUNTAINS
AND POSSIBLY A FEW LOWLAND AREAS WILL GET HEAVY SNOW. A SERIES OF
WET AND WARMER SYSTEMS WILL IMPACT THE REGION THROUGH THE WEEKEND.

&&

.SHORT TERM...MODELS IN GOOD AGREEMENT SHOWING A WEATHER SYSTEM
MOVING INTO THE AREA FROM THE SOUTHWEST THIS AFTERNOON AND EVENING.
THE LOW LEVELS WILL START OUT COLD ENOUGH FOR SNOW OVER THE
LOWLANDS. WITH A SURFACE LOW MOVING ONSHORE TO THE NORTH TONIGHT
GRADIENTS WILL QUICKLY BECOME SOUTHERLY AND SNOW WILL CHANGE TO RAIN
FROM SOUTH TO NORTH ACROSS THE AREA. DURING THE TRANSITION FROM SNOW
TO RAIN THERE WILL BE A POSSIBILITY OF A FEW HOURS OF FREEZING RAIN.
MOST AREAS SHOULD CHANGE OVER LATE IN THE EVENING OR IN THE EARLY
MORNING HOURS OF WEDNESDAY. SNOW COULD HOLD ON A BIT LONGER OVER THE
NORTHWEST INTERIOR AND THE HOOD CANAL AREA...PROBABLY CHANGING TO
RAIN A LITTLE AFTER SUNRISE WEDNESDAY MORNING. MODEL TRENDS HAVE
BEEN TO BACK OFF ON SNOW ACCUMULATIONS AS THE EVENT NEARS. BASED ON
LATEST MODELS AND TRENDS...IT LOOKS LIKE THE AREAS MOST LIKELY TO
GET HEAVY SNOW WILL BE THE HOOD CANAL ZONE AND NORTHWEST INTERIOR.
WILL UPGRADE THE WINTER STORM WATCH TO A WARNING FOR THOSE AREAS.
WILL GO WITH A SNOW ADVISORY ALL OTHER AREAS WHERE 1 TO 3 INCHES
LOOKS MOST LIKELY. THE CASCADES LOOK LIKE THEY WILL GET HEAVY SNOW
AS WELL...MAINLY FROM 03Z TONIGHT THROUGH 00Z THURSDAY. RAIN
WEDNESDAY WILL TAPER TO SHOWERS LATE IN THE DAY AS THE WEATHER
SYSTEM MOVES INLAND BUT THE LULL WILL BE BRIEF AS ANOTHER SYSTEM
MOVES IN DURING THE EVENING.

A COUPLE OF ADDITIONAL WEATHER SYSTEMS WILL SPREAD ADDITIONAL RAINS
INTO THE AREA WEDNESDAY NIGHT AND THURSDAY. HIGHS WEDNESDAY AND
THURSDAY WILL BE ABOVE NORMAL...INTO THE LOW 50S SOME AREAS. SNOW
LEVELS IN THE MOUNTAINS WILL BE FAIRLY HIGH BY LATE WEDNESDAY AND
INTO THURSDAY...ABOVE PASS LEVELS. SCHNEIDER

.LONG TERM...A SERIES OF FRONTAL SYSTEMS WILL BRING RAIN EVERY 12-24
HOURS THROUGH THIS PERIOD. TEMPERATURES WILL REMAIN ABOVE NORMAL
WITH HIGHS NEAR 50 EACH DAY AND LOWS IN THE 40S. SCHNEIDER

&&

.HYDROLOGY...WITH THE SWITCH TO A WARMER AND WETTER WEATHER PATTERN
THERE IS THE POSSIBILITY OF FLOODING ON THE SKOKOMISH RIVER AT SOME
POINT LATE THIS WEEK INTO EARLY NEXT WEEK. FOR THE REMAINDER OF THE
RIVERS...BRIEF BREAKS IN THE HEAVIER PRECIPITATION WILL ALLOW THE
RIVERS TO RECEDE IN A BIT BETWEEN SYSTEMS. FLOODING ON THE GREEN
RIVER IS NOT EXPECTED IN THE NEXT 10 DAYS.

&&

.AVIATION...WEST FLOW ALOFT OVER THE PACIFIC NORTHWEST EARLY THIS
MORNING WITH A FLAT RIDGE BUILDING WEAKLY OVER THE REGION AND AN
UPPER LOW OVER BRITISH COLUMBIA. THE RIDGE WILL SHIFT EAST OF THE
CASCADES TODAY AS A PACIFIC FRONTAL SYSTEM APPROACHES THE AREA FROM
THE WEST. THE FRONTAL SYSTEM WILL MOVE THROUGH THE AREA TONIGHT.
SURFACE HIGH PRESSURE EAST OF THE CASCADES WILL MAINTAIN LOW LEVEL
OFFSHORE FLOW ACROSS WESTERN WASHINGTON TODAY...WITH A RAPID SHIFT
SOUTHERLY ONSHORE FLOW TONIGHT BEHIND THE FRONT.

AT 2 AM WE HAD GENERALLY VFR CONDITIONS ACROSS WESTERN WASHINGTON
WITH CEILINGS MAINLY 090 OR ABOVE. PATCHY FREEZING FOG HAS PRODUCED
LOCAL IFR CONDITIONS MAINLY AT OLYMPIA. THE AIR MASS IS DRY AND
STABLE WITH TEMPERATURES BELOW FREEZING JUST ABOUT EVERYWHERE.

CLOUD COVER WILL SPREAD ACROSS WESTERN WASHINGTON TODAY AHEAD OF THE
APPROACHING FRONTAL SYSTEM...GRADUALLY LOWERING BUT REMAINING
GENERALLY VFR. LIGHT SNOW WILL BEGIN FALLING IN SOUTHWEST WASHINGTON
THIS AFTERNOON AND SPREAD NORTHWARD ACROSS THE FORECAST AREA DURING
THE LATE AFTERNOON AND EVENING...WITH CONDITIONS DETERIORATING TO
LOW-END MVFR AND IFR. PRECIPITATION WILL CHANGE TO RAIN AFTER
MIDNIGHT OVER MOST OF THE WESTERN WASHINGTON LOWLANDS...AND A BRIEF
PERIOD OF FREEZING RAIN IS POSSIBLE DURING THE TRANSITION.

KSEA...EAST OR NORTHEAST WIND 6-12 KT...SHIFTING TO SOUTH 10-20 KT
LATE TONIGHT. SNOW WILL BEGIN AROUND 4 PM TODAY...THEN CHANGE TO
RAIN ROUGHLY MIDNIGHT TO 2 AM. SNOWFALL ACCUMULATION WILL LIKELY BE
A TRACE TO 2 INCHES. ALSO...A BRIEF PERIOD OF FREEZING RAIN IS
POSSIBLE DURING THE TRANSITION FROM SNOW TO RAIN. MCDONNAL

&&

.MARINE...SURFACE HIGH PRESSURE EAST OF THE CASCADES WILL MAINTAIN
OFFSHORE FLOW TODAY. A 998 MB SURFACE LOW ABOUT 600 NM WEST OF THE
OREGON COAST WILL DEEPEN TO 991 MB LATE TODAY AS IT MOVES INTO THE
WASHINGTON OFFSHORE WATERS...THEN WEAKEN AND REACH VANCOUVER ISLAND
EARLY WEDNESDAY. THE FRONT ASSOCIATED WITH THE LOW WILL MOVE THROUGH
THE COASTAL WATERS LATE TONIGHT AND INLAND WEDNESDAY MORNING.

SOLID GALE FORCE WINDS ARE EXPECTED TO DEVELOP AHEAD OF THE FRONT
OVER THE COASTAL WATERS...THE STRAIT OF JUAN DE FUCA...AND NORTHERN
INLAND WATERS. GALES ARE LIKELY TO CONTINUE FOR A WHILE BEHIND THE
FRONT ON WEDNESDAY...INCLUDING A BRIEF WESTERLY GALE IN THE CENTRAL
STRAIT AND EAST ENTRANCE.

MORE FRONTAL SYSTEMS WILL AFFECT THE AREA WEDNESDAY NIGHT THROUGH
SATURDAY. SOME OF THESE FEATURES COULD ALSO BE FAIRLY VIGOROUS BUT
DETAILS ARE HIGHLY UNCERTAIN. MCDONNAL

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...WINTER STORM WARNING HOOD CANAL AREA...WESTERN WHATCOM
       COUNTY...AND NORTHERN AND CENTRAL CASCADES.
    .WINTER WEATHER ADVISORY ALL OTHER ZONES.
PZ...GALE WARNING COASTAL WATERS...ENTIRE STRAIT OF JUAN DE
       FUCA...NORTHERN INLAND WATERS.
    .SMALL CRAFT ADVISORY ADMIRALTY INLET.

WWW.WEATHER.GOV/SEATTLE

The office that day

Everything else NWS Seattle, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 11, 3:36 AM PSTWinter Weather AdvisorySEWSan Juan33 hr
Jan 11, 2:58 PM PSTSmall Craft Advisory for Rough BarSEW4 days

Nearby

Winter Storm Warnings in Washington, 2011Every winter storm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.