Winter Storm Warning 9, NWS Seattle, WA

Issued

Feb 21, 2012, 3:08 PM PST (23:08 UTC)

Expired

Feb 21, 2012, 6:45 PM PST

In force

4 hr

Issued by

NWS Seattle, WA

936 
WWUS46 KSEW 212308
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
308 PM PST TUE FEB 21 2012

WAZ519-220715-
/O.CAN.KSEW.WW.Y.0017.000000T0000Z-120222T0000Z/
/O.NEW.KSEW.WW.Y.0018.120222T1400Z-120223T0800Z/
WEST SLOPES CENTRAL CASCADES AND PASSES-
308 PM PST TUE FEB 21 2012

...WINTER WEATHER ADVISORY IN EFFECT FOR THE CENTRAL CASCADES
ABOVE 2500 FEET FROM 6 AM WEDNESDAY TO MIDNIGHT PST WEDNESDAY
NIGHT...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 AM
WEDNESDAY TO MIDNIGHT PST WEDNESDAY NIGHT. THE WINTER WEATHER
ADVISORY THAT WAS IN EFFECT EARLIER HAS ENDED.

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

* TIMING...THE SNOW HAS CHANGED OVER TO RAIN AT MOST PLACES BUT
  WILL CHANGE BACK OVER TO SNOW WEDNESDAY MORNING BEHIND A COLD
  FRONT. THE SNOW LEVEL IS EXPECTED TO FALL TO NEAR 2500 FEET
  WEDNESDAY AFTERNOON.

* SNOW ACCUMULATIONS...6 TO 12 INCHES...WITH LOCALLY HIGHER
  AMOUNTS...ARE LIKELY BY LATE WEDNESDAY NIGHT.

* MAIN IMPACT...TRAVEL MAY BECOME DIFFICULT AT TIMES IN THE
  PASSES. THERE IS ALSO AN AVALANCHE WARNING IN EFFECT FOR
  EXTREME AVALANCHE DANGER THROUGH EARLY WEDNESDAY.

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.

&&

$$

WAZ518-220715-
/O.UPG.KSEW.WW.Y.0017.000000T0000Z-120222T0000Z/
/O.NEW.KSEW.WS.W.0009.120221T2308Z-120222T1400Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
308 PM PST TUE FEB 21 2012

...WINTER STORM WARNING IN EFFECT FOR THE NORTH CASCADES ABOVE
3500 FEET UNTIL 6 AM PST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WARNING FOR SNOW...WHICH IS IN EFFECT UNTIL 6 AM PST WEDNESDAY.
THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

* SOME AFFECTED LOCATIONS...MOUNT BAKER.

* TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE ABOVE THE 3500
  FOOT LEVEL THROUGH TONIGHT BEFORE TAPERING OFF TO SHOWERS
  WEDNESDAY MORNING. 

* SNOW ACCUMULATIONS...8 TO 14 INCHES OF SNOW IS LIKELY BY EARLY
  WEDNESDAY. 

* MAIN IMPACT...EXPECT HAZARDOUS WINTER DRIVING CONDITIONS IN THE
  PASSES. THERE IS ALSO AN AVALANCHE WARNING IN EFFECT FOR EXTREME
  AVALANCHE DANGER THROUGH EARLY WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING IS ISSUED WHEN A FOOT OF OR MORE OF SNOW IS
LIKELY IN 12 HOURS.

&&

$$

WWW.WEATHER.GOV

573 
WWUS46 KSEW 220245
WSWSEW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
645 PM PST TUE FEB 21 2012

WAZ518-221300-
/O.CAN.KSEW.WS.W.0009.000000T0000Z-120222T1400Z/
/O.EXA.KSEW.WW.Y.0018.120222T1400Z-120223T0800Z/
WEST SLOPES NORTHERN CASCADES AND PASSES-
645 PM PST TUE FEB 21 2012

...WINTER WEATHER ADVISORY IN EFFECT ABOVE 2500 FEET FROM 6 AM
WEDNESDAY TO MIDNIGHT PST WEDNESDAY NIGHT...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 AM
WEDNESDAY TO MIDNIGHT PST WEDNESDAY NIGHT. THE WINTER STORM
WARNING HAS BEEN CANCELLED.

* SOME AFFECTED LOCATIONS...MOUNT BAKER.

* SNOW ACCUMULATION...5 TO 10 INCHES.

* TIMING...WEDNESDAY MORNING THROUGH WEDNESDAY EVENING.

* SNOW LEVELS...4500 TO 5000 FEET TONIGHT WITH LITTLE
  ACCUMULATIONS EXPECTED BELOW THAT. FALLING TO 2500 FEET
  WEDNESDAY.

* MAIN IMPACT...EXPECT WINTER TRAVEL 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.

&&

$$

WAZ519-221300-
/O.CON.KSEW.WW.Y.0018.120222T1400Z-120223T0800Z/
WEST SLOPES CENTRAL CASCADES AND PASSES-
645 PM PST TUE FEB 21 2012

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM WEDNESDAY
TO MIDNIGHT PST WEDNESDAY NIGHT...

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

* SNOW ACCUMULATIONS...6 TO 12 INCHES. 

* TIMING...WEDNESDAY MORNING THROUGH WEDNESDAY EVENING.

* SNOW LEVELS...6000 TO 7000 FEET TONIGHT...FALLING TO 2500 FEET
  WEDNESDAY.

* MAIN IMPACT...EXPECT WINTER TRAVEL 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.

&&

$$

Winter Storm Warnings in Washington, 2012Every winter storm warning in 2012

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