Wind Chill Advisory 22, NWS Anchorage, AK

180 
WWAK41 PAFC 071419
WSWAER

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
519 AM AKST FRI DEC 7 2012

AKZ131-080330-
/X.NEW.PAFC.BZ.A.0037.121208T2100Z-121209T0900Z/
/X.CON.PAFC.WC.Y.0022.000000T0000Z-121207T2100Z/
NORTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...VALDEZ...THOMPSON PASS
519 AM AKST FRI DEC 7 2012

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON AKST TODAY FOR
THOMPSON PASS...

 ...BLIZZARD WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING FOR THOMPSON PASS...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A BLIZZARD
WATCH...WHICH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING. 

* LOCATION...THOMPSON PASS.

* SNOW...ACCUMULATION FROM 6 TO 10 INCHES SATURDAY AFTERNOON THROUGH
  SATURDAY EVENING.

* VISIBILITY...POSSIBLY REDUCED TO ONE QUARTER MILE OR LESS
  SATURDAY AFTERNOON AND EVENING.

* WIND...NORTH 30 TO 45 MPH.

* WIND CHILL VALUES...40 BELOW TO 50 BELOW FRIDAY MORNING.

* TIMING...WINDS WILL DIMINISH SOME AND TEMPERATURES WILL WARM
  THROUGH FRIDAY MORNING. SNOWFALL WILL BEGIN SATURDAY MORNING AND
  INCREASE THROUGH THE AFTERNOON. WINDS WILL INCREASE AGAIN TO 30
  TO 45 MPH BY NOON SATURDAY AND THEN DIMINISH RAPIDLY LATE IN THE
  EVENING SATURDAY.

* IMPACTS...INCREASED RISK OF HYPOTHERMIA AND FROSTBITE THROUGH
  FRIDAY MORNING.

* IMPACTS...SNOWFALL COMBINED WITH STRONG WINDS AND BLOWING SNOW
  MAY PRODUCE WHITE-OUT CONDITIONS AT TIMES. DRIVING MAY BECOME
  VERY DIFFICULT SATURDAY AFTERNOON AND EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROSTBITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITE-OUT CONDITIONS AND MAKE TRAVEL VERY
DIFFICULT.

&&

$$

AKZ125-080330-
/X.NEW.PAFC.BZ.A.0037.121208T1600Z-121209T0900Z/
WESTERN PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...WHITTIER...SEWARD...GIRDWOOD...
MOOSE PASS
519 AM AKST FRI DEC 7 2012

...BLIZZARD WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY EVENING FOR PORTAGE VALLEY AND TURNAGAIN ARM...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A BLIZZARD
WATCH...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY
EVENING FOR PORTAGE VALLEY AND TURNAGAIN ARM. 

* LOCATION...PORTAGE VALLEY AND TURNAGAIN ARM.

* SNOW...8 TO 14 INCHES...HEAVIEST TOWARD PORTAGE.

* VISIBILITY...POSSIBLY REDUCED TO ONE QUARTER MILE OR LESS.

* WIND...EAST 30 TO 45 MPH.

* TIMING...SNOWFALL WILL BEGIN LATE FRIDAY NIGHT AND BECOME
  HEAVIER SATURDAY MORNING. WINDS WILL RAPIDLY INCREASE SATURDAY
  MORNING AND THEN DIMINISH AROUND MIDNIGHT SATURDAY NIGHT.

* IMPACTS...SNOWFALL COMBINED WITH STRONG WINDS AND BLOWING SNOW
  MAY PRODUCE WHITE-OUT CONDITIONS AT TIMES. DRIVING MAY BECOME
  VERY DIFFICULT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITE-OUT CONDITIONS AND MAKE TRAVEL VERY
DIFFICULT.

&&

$$

953 
WWAK41 PAFC 072057
WSWAER

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
1157 AM AKST FRI DEC 7 2012

AKZ131-081000-
/X.EXT.PAFC.WC.Y.0022.000000T0000Z-121208T1900Z/
/X.CON.PAFC.BZ.A.0037.121208T2100Z-121209T0900Z/
NORTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...VALDEZ...THOMPSON PASS
1157 AM AKST FRI DEC 7 2012

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 10 AM AKST SATURDAY...

...BLIZZARD WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR THOMPSON PASS...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A BLIZZARD
WATCH...WHICH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING.

* LOCATION...THOMPSON PASS.

* SNOW...ACCUMULATION FROM 6 TO 10 INCHES SATURDAY AFTERNOON 
  THROUGH SATURDAY EVENING. 

* VISIBILITY...POSSIBLY REDUCED TO ONE QUARTER MILE OR LESS 
  SATURDAY AFTERNOON AND EVENING. 

* WIND...NORTH 30 TO 45 MPH.

* WIND CHILL VALUES...35 BELOW TO 45 BELOW THROUGH SATURDAY
  MORNING. 

* TIMING...TEMPERATURES WILL SLOWLY WARM THROUGH SATURDAY MORNING.
  SNOWFALL WILL BEGIN SATURDAY MORNING AND INCREASE THROUGH THE
  AFTERNOON. WINDS WILL INCREASE TO 30 TO 45 MPH BY NOON SATURDAY
  AND THEN DIMINISH RAPIDLY LATE IN THE EVENING SATURDAY.

* IMPACTS...INCREASED RISK OF HYPOTHERMIA AND FROSTBITE THROUGH 
  FRIDAY MORNING. 

* IMPACTS...SNOWFALL COMBINED WITH STRONG WINDS AND BLOWING SNOW 
  MAY PRODUCE WHITE-OUT CONDITIONS AT TIMES. DRIVING MAY BECOME 
  VERY DIFFICULT SATURDAY AFTERNOON AND EVENING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROSTBITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITE-OUT CONDITIONS AND MAKE TRAVEL VERY
DIFFICULT.

&&

$$

AKZ125-081000-
/X.CON.PAFC.BZ.A.0037.121208T1600Z-121209T0900Z/
WESTERN PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...WHITTIER...SEWARD...GIRDWOOD...
MOOSE PASS
1157 AM AKST FRI DEC 7 2012

...BLIZZARD WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY EVENING FOR PORTAGE VALLEY AND TURNAGAIN ARM...

* LOCATION...PORTAGE VALLEY AND TURNAGAIN ARM.

* SNOW...8 TO 14 INCHES...HEAVIEST TOWARD PORTAGE.

* VISIBILITY...POSSIBLY REDUCED TO ONE QUARTER MILE OR LESS.

* WIND...EAST 30 TO 45 MPH.

* TIMING...SNOWFALL WILL BEGIN LATE FRIDAY NIGHT AND BECOME 
  HEAVIER SATURDAY MORNING. WINDS WILL RAPIDLY INCREASE SATURDAY 
  MORNING AND THEN DIMINISH AROUND MIDNIGHT SATURDAY NIGHT. 

* IMPACTS...SNOWFALL COMBINED WITH STRONG WINDS AND BLOWING SNOW 
  MAY PRODUCE WHITE-OUT CONDITIONS AT TIMES. DRIVING MAY BECOME 
  VERY DIFFICULT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITE-OUT CONDITIONS AND MAKE TRAVEL VERY
DIFFICULT.

&&

$$

029 
WWAK41 PAFC 072101 CCA
WSWAER

URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE ANCHORAGE AK
1200 PM AKST FRI DEC 7 2012

AKZ131-081015-
/X.COR.PAFC.WC.Y.0022.000000T0000Z-121208T1900Z/
/X.COR.PAFC.BZ.A.0037.121208T2100Z-121209T0900Z/
NORTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...VALDEZ...THOMPSON PASS
1200 PM AKST FRI DEC 7 2012

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 10 AM AKST SATURDAY FOR
THOMPSON PASS...

...BLIZZARD WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR THOMPSON PASS...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A BLIZZARD
WATCH...WHICH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING.

* LOCATION...THOMPSON PASS.

* SNOW...ACCUMULATION FROM 6 TO 10 INCHES SATURDAY AFTERNOON 
  THROUGH SATURDAY EVENING. 

* VISIBILITY...POSSIBLY REDUCED TO ONE QUARTER MILE OR LESS 
  SATURDAY AFTERNOON AND EVENING. 

* WIND...NORTH 30 TO 45 MPH.

* WIND CHILL VALUES...35 BELOW TO 45 BELOW THROUGH SATURDAY
  MORNING. 

* TIMING...TEMPERATURES WILL SLOWLY WARM THROUGH SATURDAY MORNING.
  SNOWFALL WILL BEGIN SATURDAY MORNING AND INCREASE THROUGH THE
  AFTERNOON. WINDS WILL INCREASE TO 30 TO 45 MPH BY NOON SATURDAY
  AND THEN DIMINISH RAPIDLY LATE IN THE EVENING SATURDAY.

* IMPACTS...INCREASED RISK OF HYPOTHERMIA AND FROSTBITE THROUGH 
  FRIDAY MORNING. 

* IMPACTS...SNOWFALL COMBINED WITH STRONG WINDS AND BLOWING SNOW 
  MAY PRODUCE WHITE-OUT CONDITIONS AT TIMES. DRIVING MAY BECOME 
  VERY DIFFICULT SATURDAY AFTERNOON AND EVENING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROSTBITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITE-OUT CONDITIONS AND MAKE TRAVEL VERY
DIFFICULT.

&&

$$

AKZ125-081015-
/X.CON.PAFC.BZ.A.0037.121208T1600Z-121209T0900Z/
WESTERN PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...WHITTIER...SEWARD...GIRDWOOD...
MOOSE PASS
1200 PM AKST FRI DEC 7 2012

...BLIZZARD WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY EVENING FOR PORTAGE VALLEY AND TURNAGAIN ARM...

* LOCATION...PORTAGE VALLEY AND TURNAGAIN ARM.

* SNOW...8 TO 14 INCHES...HEAVIEST TOWARD PORTAGE.

* VISIBILITY...POSSIBLY REDUCED TO ONE QUARTER MILE OR LESS.

* WIND...EAST 30 TO 45 MPH.

* TIMING...SNOWFALL WILL BEGIN LATE FRIDAY NIGHT AND BECOME 
  HEAVIER SATURDAY MORNING. WINDS WILL RAPIDLY INCREASE SATURDAY 
  MORNING AND THEN DIMINISH AROUND MIDNIGHT SATURDAY NIGHT. 

* IMPACTS...SNOWFALL COMBINED WITH STRONG WINDS AND BLOWING SNOW 
  MAY PRODUCE WHITE-OUT CONDITIONS AT TIMES. DRIVING MAY BECOME 
  VERY DIFFICULT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITE-OUT CONDITIONS AND MAKE TRAVEL VERY
DIFFICULT.

&&

$$

367 
WWAK41 PAFC 080059
WSWAER

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
359 PM AKST FRI DEC 7 2012

AKZ131-081515-
/X.UPG.PAFC.BZ.A.0037.121208T2100Z-121209T0900Z/
/X.NEW.PAFC.BZ.W.0056.121209T0100Z-121209T1600Z/
/X.CON.PAFC.WC.Y.0022.000000T0000Z-121208T1900Z/
NORTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...VALDEZ...THOMPSON PASS
359 PM AKST FRI DEC 7 2012

...BLIZZARD WARNING IN EFFECT FROM 4 PM SATURDAY TO 7 AM AKST
SUNDAY THROUGH THOMPSON PASS...

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 AM AKST
SATURDAY...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 4 PM SATURDAY TO 7 AM AKST
SUNDAY. THE BLIZZARD WATCH IS NO LONGER IN EFFECT. 

* LOCATION...THOMPSON PASS.

* SNOW...8 TO 14 INCHES OF ACCUMULATION SATURDAY AFTERNOON THROUGH
  EARLY SUNDAY MORNING.

* VISIBILITY...REDUCED TO ONE QUARTER MILE OR LESS AT TIMES.

* WIND...NORTH 20 TO 30 MPH THROUGH SATURDAY MORNING INCREASING TO
  30 TO 40 MPH SATURDAY AFTERNOON.

* WIND CHILL VALUES...40 BELOW ZERO THROUGH LATE SATURDAY MORNING.

* TIMING...REGARDING THE BLIZZARD...THE WORST CONDITIONS ARE
  EXPECTED TO DEVELOP LATE SATURDAY AFTERNOON AND PERSIST THROUGH
  THE OVERNIGHT HOURS LATE SATURDAY NIGHT. ALTHOUGH STEADY SNOW
  WILL PERSIST WELL INTO SUNDAY...WINDS SHOULD DIMINISH EARLY
  SUNDAY MORNING RESULTING IN IMPROVED VISIBILITY. REGARDING THE
  WIND CHILLS...AIR TEMPERATURES WILL WARM DURING THE DAY
  SATURDAY.

* IMPACTS...WHITE-OUT CONDITIONS DUE TO BLOWING SNOW RESULTING IN
  DIFFICULT TRAVEL CONDITIONS AT TIMES. INCREASED RISK OF
  HYPOTHERMIA AND FROSTBITE FROM WIND CHILL.

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 WHITE-OUT
CONDITIONS...MAKING TRAVEL VERY DIFFICULT. ALL TRAVEL AND OUTDOOR
ACTIVITY IS STRONGLY DISCOURAGED.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROSTBITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.

&&

$$

AKZ125-081515-
/X.UPG.PAFC.BZ.A.0037.121208T1600Z-121209T0900Z/
/X.NEW.PAFC.BZ.W.0056.121208T1900Z-121209T0900Z/
WESTERN PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...WHITTIER...SEWARD...GIRDWOOD...
MOOSE PASS
359 PM AKST FRI DEC 7 2012

...BLIZZARD WARNING IN EFFECT FROM 10 AM SATURDAY TO MIDNIGHT
AKST SATURDAY NIGHT THROUGH PORTAGE VALLEY AND TURNAGAIN ARM...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 10 AM SATURDAY TO MIDNIGHT AKST
SATURDAY NIGHT. THE BLIZZARD WATCH IS NO LONGER IN EFFECT. 

* LOCATION...PORTAGE VALLEY AND TURNAGAIN ARM.

* SNOW...12 TO 20 INCHES.

* VISIBILITY...REDUCED TO ONE QUARTER MILE OR LESS AT TIMES.

* WIND...EAST 30 TO 45 MPH.

* TIMING...THE WORST CONDITIONS ARE EXPECTED TO DEVELOP SATURDAY
  MORNING AS SNOW BECOMES HEAVY AND WINDS RAPIDLY INCREASE. WINDS
  THEN LOOK TO DIMINISH LATE SATURDAY EVENING AS A WEATHER FRONT
  PASSES THROUGH THE REGION.

* IMPACTS...WHITE-OUT CONDITIONS DUE TO BLOWING SNOW RESULTING IN
  DIFFICULT TRAVEL CONDITIONS AT TIMES.

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 WHITE-OUT
CONDITIONS...MAKING TRAVEL VERY DIFFICULT. ALL TRAVEL AND OUTDOOR
ACTIVITY IS STRONGLY DISCOURAGED.

&&

$$

JM

121 
WWAK41 PAFC 081433
WSWAER

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
533 AM AKST SAT DEC 8 2012

AKZ131-090345-
/X.CON.PAFC.BZ.W.0056.121209T0100Z-121209T1600Z/
/X.CON.PAFC.WC.Y.0022.000000T0000Z-121208T1900Z/
NORTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...VALDEZ...THOMPSON PASS
533 AM AKST SAT DEC 8 2012

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 AM AKST THIS
MORNING THROUGH THOMPSON PASS...

...BLIZZARD WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
7 AM AKST SUNDAY THROUGH THOMPSON PASS...

* LOCATION...THOMPSON PASS.

* SNOW...16 TO 22 INCHES OF SNOW ACCUMULATION THIS AFTERNOON 
  THROUGH EARLY SUNDAY MORNING. 

* VISIBILITY...REDUCED TO ONE QUARTER MILE OR LESS AT TIMES.

* WIND...NORTH 15 TO 25 MPH INCREASING TO 25 TO 40 MPH THIS
  AFTERNOON. WINDS WILL REMAIN IN THE 30 TO 40 MPH RANGE THROUGH
  THE NIGHT.

* WIND CHILL VALUES...40 BELOW ZERO THROUGH LATE MORNING.

* TIMING...REGARDING THE BLIZZARD...THE WORST CONDITIONS ARE
  EXPECTED TO DEVELOP LATE THIS AFTERNOON AND PERSIST THROUGH THE
  OVERNIGHT HOURS. ALTHOUGH STEADY SNOW WILL PERSIST WELL INTO
  SUNDAY...WINDS SHOULD RAPIDLY DIMINISH EARLY SUNDAY MORNING
  RESULTING IN IMPROVED VISIBILITY. REGARDING THE WIND
  CHILLS...AIR TEMPERATURES WILL WARM DURING THE DAY TODAY.

* IMPACTS...WHITE-OUT CONDITIONS DUE TO BLOWING SNOW RESULTING 
  IN DIFFICULT TRAVEL CONDITIONS AT TIMES. INCREASED RISK OF 
  HYPOTHERMIA AND FROSTBITE FROM WIND CHILL. 

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 WHITE-OUT
CONDITIONS...MAKING TRAVEL VERY DIFFICULT. ALL TRAVEL AND OUTDOOR
ACTIVITY IS STRONGLY DISCOURAGED.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROSTBITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.

&&

$$

AKZ125-090345-
/X.CON.PAFC.BZ.W.0056.121208T1900Z-121209T0900Z/
WESTERN PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...WHITTIER...SEWARD...GIRDWOOD...
MOOSE PASS
533 AM AKST SAT DEC 8 2012

...BLIZZARD WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
MIDNIGHT AKST TONIGHT THROUGH PORTAGE VALLEY AND TURNAGAIN ARM...

* LOCATION...PORTAGE VALLEY AND TURNAGAIN ARM.

* SNOW...12 TO 20 INCHES.

* VISIBILITY...REDUCED TO ONE QUARTER MILE OR LESS AT TIMES.

* WIND...EAST 35 TO 55 MPH.

* TIMING...WINDS WILL INCREASE RAPIDLY THIS MORNING AS SNOW
  BECOMES HEAVIER. WINDS WILL BECOME 35 TO 50 MPH IN THE AFTERNOON
  AND PEAK IN THE 40 TO 55 MPH RANGE DURING THE EVENING RIGHT
  BEFORE A WEATHER FRONT PASSES THROUGH THE AREA. AFTER THE FRONT
  PASSES LATE IN THE EVENING THE WINDS WILL RAPIDLY DIMINISH.
  SNOWFALL WILL ALSO DIMINISH IN INTENSITY AFTER FRONTAL PASSAGE.

* IMPACTS...WHITE-OUT CONDITIONS DUE TO BLOWING SNOW RESULTING 
  IN DIFFICULT TRAVEL CONDITIONS AT TIMES. 

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 WHITE-OUT
CONDITIONS...MAKING TRAVEL VERY DIFFICULT. ALL TRAVEL AND OUTDOOR
ACTIVITY IS STRONGLY DISCOURAGED.

&&

$$

964 
WWAK41 PAFC 081805
WSWAER

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
905 AM AKST SAT DEC 8 2012

AKZ131-090715-
/X.CAN.PAFC.WC.Y.0022.000000T0000Z-121208T1900Z/
/X.CON.PAFC.BZ.W.0056.121209T0100Z-121209T1600Z/
NORTHEAST PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...VALDEZ...THOMPSON PASS
905 AM AKST SAT DEC 8 2012

...BLIZZARD WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
7 AM AKST SUNDAY THROUGH THOMPSON PASS...

...WIND CHILL ADVISORY IS CANCELLED THROUGH THOMPSON PASS...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS CANCELLED THE WIND
CHILL ADVISORY. 

* LOCATION...THOMPSON PASS.

* SNOW...16 TO 22 INCHES OF SNOW ACCUMULATION THIS AFTERNOON 
  THROUGH EARLY SUNDAY MORNING. 

* VISIBILITY...REDUCED TO ONE QUARTER MILE OR LESS AT TIMES.

* WIND...LIGHT NORTH WINDS THIS MORNING WILL GRADUALLY INCREASE
  THROUGH THE DAY AND REACH EAST 25 TO 35 MPH BY LATE THIS
  AFTERNOON. WINDS WILL REMAIN IN THE 25 TO 35 MPH RANGE THROUGH
  THE NIGHT.

* TIMING...REGARDING THE BLIZZARD...THE WORST CONDITIONS ARE 
  EXPECTED TO DEVELOP LATE THIS AFTERNOON AND PERSIST THROUGH 
  THE OVERNIGHT HOURS. ALTHOUGH STEADY SNOW WILL PERSIST WELL 
  INTO SUNDAY...WINDS SHOULD RAPIDLY DIMINISH EARLY SUNDAY 
  MORNING RESULTING IN IMPROVED VISIBILITY. REGARDING THE WIND 
  CHILLS... AIR TEMPERATURES WILL WARM DURING THE DAY TODAY. 

* IMPACTS...WHITE-OUT CONDITIONS DUE TO BLOWING SNOW RESULTING IN
  DIFFICULT TRAVEL CONDITIONS AT TIMES. INCREASED RISK OF
  HYPOTHERMIA AND FROSTBITE FROM WIND CHILL. 

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 WHITE-OUT
CONDITIONS...MAKING TRAVEL VERY DIFFICULT. ALL TRAVEL AND OUTDOOR
ACTIVITY IS STRONGLY DISCOURAGED.

&&

$$

AKZ125-090715-
/X.CON.PAFC.BZ.W.0056.121208T1900Z-121209T0900Z/
WESTERN PRINCE WILLIAM SOUND-
INCLUDING THE CITIES OF...WHITTIER...SEWARD...GIRDWOOD...
MOOSE PASS
905 AM AKST SAT DEC 8 2012

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT AKST TONIGHT
THROUGH PORTAGE VALLEY AND TURNAGAIN ARM...

* LOCATION...PORTAGE VALLEY AND TURNAGAIN ARM.

* SNOW...12 TO 20 INCHES.

* VISIBILITY...REDUCED TO ONE QUARTER MILE OR LESS AT TIMES.

* WIND...EAST 35 TO 55 MPH.

* TIMING...WINDS WILL INCREASE RAPIDLY THIS MORNING AS SNOW 
  BECOMES HEAVIER. WINDS WILL BECOME 35 TO 50 MPH IN THE 
  AFTERNOON AND PEAK IN THE 40 TO 55 MPH RANGE DURING THE 
  EVENING RIGHT BEFORE A WEATHER FRONT PASSES THROUGH THE AREA. 
  AFTER THE FRONT PASSES LATE IN THE EVENING THE WINDS WILL 
  RAPIDLY DIMINISH. SNOWFALL WILL ALSO DIMINISH IN INTENSITY 
  AFTER FRONTAL PASSAGE. 

* IMPACTS...WHITE-OUT CONDITIONS DUE TO BLOWING SNOW RESULTING 
  IN DIFFICULT TRAVEL CONDITIONS AT TIMES. 

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 WHITE-OUT
CONDITIONS...MAKING TRAVEL VERY DIFFICULT. ALL TRAVEL AND OUTDOOR
ACTIVITY IS STRONGLY DISCOURAGED.

&&

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
500 AM AKST THU DEC 6 2012

.ANALYSIS AND UPPER LEVELS...
DIPOLE PATTERN CURRENTLY OVERHEAD WITH TWO BROAD FEATURES...A CLOSED
SIBERIAN HIGH PRESSURE ALOFT ALONG WITH A CLOSED UPPER LOW FROM THE
FROM THE ALCAN BORDER THROUGH THE SOUTHERN GULF OF ALASKA. THE STRONG
SURFACE LOW PRESSURE HELPING TO FACILITATE A PATTERN CHANGE IS IN THE
PROCESS OF STRENGTHENING IN THE NORTHERN PACIFIC WITH A VERY WELL
DEFINED MOIST BAROCLINIC ZONE FROM SOUTHWEST TO NORTHEAST ACROSS THE
NORTH CENTRAL PACIFIC. VERY TIGHTLY WOUND SURFACE LOW STILL LURKS
OFFSHORE KODIAK ISLAND IS KEEPING SNOW SHOWERS IN THE AREA. ANOTHER
UPPER SHORTWAVE AND SURFACE LOW IN THE NORTHERN GULF IS BRINGING
PERIODIC SNOW SHOWERS TO THE NORTHERN GULF COAST.

.MODEL DISCUSSION...
GUIDANCE COMING INTO BETTER AGREEMENT WITH THE UPCOMING PATTERN
CHANGE AND STRONG LOW MOVING TOWARD THE AKPEN BUT SOME DIFFERENCES
STILL EXIST. ALOFT MOST GUIDANCE IS IN AGREEMENT WITH THE PHASE OF A
NORTHERN PACIFIC SHORTWAVE WITH A NEARLY STATIONARY TROUGH JUST SOUTH
OF THE ALEUTIANS. AS THE SYSTEM STRENGTHENS AND SURGES WARM AIR
NORTHWARD...HEIGHTS BEGIN TO BUILD OVER THE GULF IN RESPONSE. AT THE
SURFACE THERE IS MORE DISAGREEMENT EARLY ON REGARDING HOW QUICKLY AND
HOW DEEP THE SURFACE LOW DEVELOPS. THE TREND HAS BEEN FURTHER SOUTH
AND SLOWER IN THE BEGINNING STAGES WITH A MORE WESTWARD TRACK AFTER
MATURATION. MOST GUIDANCE HAS CAVED TO THE ECMWF SOLUTION OF A MORE
WESTERN SOLUTION INCLUDING GFS ENSEMBLE AND SHORT RANGE ENSEMBLE
GUIDANCE. THE MAJORITY OF THE SHIFTING HAS BEEN WITH THE SURFACE LOW
DEVELOPMENT...POSITION...AND TRACK. THE TIMING OF THE FRONTAL PUSH
INTO THE GULF OF ALASKA HAS BEEN RELATIVELY WELL AGREED UPON WITH THE
FRONTAL PRECIPITATION OVERSPREADING THE SOUTHCENTRAL MAINLAND BY
SATURDAY EVENING.

.SHORT TERM FORECAST...
SOUTHCENTRAL ALASKA...THE SHORT TERM LOOKS QUITE A BIT DIFFERENT THAN
THE PREVIOUS FEW WEEKS. FILLING LOW PRESSURE IN THE GULF IS BRINGING
SNOW SHOWERS TO THE NORTHERN GULF COAST AS WELL AS KODIAK
ISLAND...WHICH SHOULD DECREASE THROUGHOUT THE DAY. MID-LEVEL CLOUDS
ASSOCIATED WITH THE SYSTEM ARE SPILLING OVER THE CHUGACH INTO THE
ANCHORAGE BOWL AND KENAI PENINSULA WHICH WILL REMAIN COLD AND DRY
ONCE AGAIN. AFTER TODAY...ALL EYES TURN TO A FRONTAL BOUNDARY
APPROACHING THE MAINLAND OVER THE WEEKEND...WHICH LOOKS INCREASINGLY
LIKELY TO BRING THE FIRST WIDESPREAD SNOW BACK TO THE AREA.

SOUTHWEST ALASKA...MUCH OF THE SAME FOR THE SOUTHWEST MAINLAND TODAY.
NORTHERLY WINDS WILL BE LIGHTER AND LESS GUSTY THAN THE PREVIOUS
DAYS. A LOW CLOUD DECK WILL BE HANGING AROUND THE BRISTOL BAY COAST
BUT SHOULD REMAIN JUST OFFSHORE. SCATTERED SNOW SHOWERS WILL CONTINUE
FOR THE ALASKAN PENINSULA AS COLD AIR STREAMS OVER THE WARMER WATER.
EARLY SATURDAY MORNING A FRONT WILL OVERSPREAD THE AREA FROM THE
SOUTH BRINGING THE FIRST WIDESPREAD PRECIPITATION IN QUITE SOME TIME.

BERING SEA AND ALEUTIANS...NORTHERLY FLOW AND SNOW SHOWERS WILL
CONTINUE FOR MOST OF THE CHAIN TODAY. LATE THURSDAY NIGHT A FRONT
ASSOCIATED WITH A STRONG NORTHERN PACIFIC LOW WILL APPROACH THE
EASTERN CHAIN...INCREASING THE WINDS AND BRINGING RAIN AND SNOW BY
FRIDAY AFTERNOON.

.LONG TERM FORECAST...
A BRAND NEW PATTERN IS EMERGING AFTER THE WEEKEND AND LOOKS TO
CONTINUE FOR THE FORESEEABLE FUTURE. DETAILS ARE HARD TO COME BY AT
THIS POINT BUT A MORE PROGRESSIVE ZONAL SOUTHWESTERLY FLOW SETS UP
WITH BROAD WEAK TROUGHING OVER THE BERING SEA AS WELL AS WEAK RIDGING
OVER THE NORTHEASTERN PACIFIC.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...
FIRE WEATHER...NONE

MTL DEC 12