Blizzard Watch 1, NWS Anchorage, AK

151 
WWAK42 PAFC 032309
WSWALU

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
209 PM AKST MON JAN 3 2011

AKZ187-040015-
/X.CAN.PAFC.BZ.W.0001.000000T0000Z-110104T0100Z/
CENTRAL ALEUTIANS-
INCLUDING THE CITY OF...ATKA AND ADAK
209 PM AKST MON JAN 3 2011

...BLIZZARD WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS CANCELLED THE
BLIZZARD WARNING. 

VISIBILITIES WILL CONTINUE TO IMPROVE AS THE SNOW AND WINDS
DECREASE THIS AFTERNOON. 

$$

AKZ155-041400-
/X.UPG.PAFC.BZ.A.0001.110104T0600Z-110104T1800Z/
/X.NEW.PAFC.BZ.W.0002.110103T2309Z-110104T1800Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
209 PM AKST MON JAN 3 2011

...BLIZZARD WARNING IN EFFECT UNTIL 9 AM AKST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT UNTIL 9 AM AKST TUESDAY. THE
BLIZZARD WATCH IS NO LONGER IN EFFECT. 

A STRONG LOW PRESSURE SYSTEM IS MOVING EASTWARD SOUTH OF THE
ALEUTIANS. THIS LOW WILL MOVE TO JUST NORTH OF BRISTOL BAY BY
THIS EVENING. STRONG NORTH WINDS OF 35 TO 45 MPH AND HEAVY SNOW
WILL DEVELOP ALONG THE COAST AND NUNIVAK ISLAND THIS AFTERNOON.
VISIBILITIES WILL BE REDUCED TO ONE QUARTER MILE OR LESS AT TIMES
IN BLOWING SNOW THROUGH TUESDAY MORNING.

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 EXTREMELY DANGEROUS. ALL TRAVEL AND
OUTDOOR ACTIVITY IS STRONGLY DISCOURAGED.

&&

$$

863 
WWAK42 PAFC 040048 CCA
WSWALU

URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE ANCHORAGE AK
345 PM AKST MON JAN 3 2011

AKZ187-040145-
/X.CAN.PAFC.BZ.W.0001.000000T0000Z-110104T0100Z/
CENTRAL ALEUTIANS-
INCLUDING THE CITY OF...ATKA AND ADAK
345 PM AKST MON JAN 3 2011

...BLIZZARD WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS CANCELLED THE
BLIZZARD WARNING. 

VISIBILITIES WILL CONTINUE TO IMPROVE AS THE SNOW AND WINDS
DECREASE THIS AFTERNOON. 

$$

AKZ155-041545-
/X.UPG.PAFC.BZ.A.0001.110104T0600Z-110104T1800Z/
/X.COR.PAFC.BZ.W.0002.110104T0045Z-110104T1800Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
345 PM AKST MON JAN 3 2011

...BLIZZARD WARNING IN EFFECT UNTIL 9 AM AKST TUESDAY ALONG THE
COAST AND NUNIVAK ISLAND...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT UNTIL 9 AM AKST TUESDAY. THE
BLIZZARD WATCH IS NO LONGER IN EFFECT. 

STRONG NORTH WINDS OF 35 TO 45 MPH AND HEAVY SNOW WILL DEVELOP
ALONG THE COAST AND NUNIVAK ISLAND THIS AFTERNOON. VISIBILITIES
WILL BE REDUCED TO ONE QUARTER MILE OR LESS AT TIMES IN BLOWING
SNOW THROUGH TUESDAY MORNING.

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 EXTREMELY DANGEROUS. ALL TRAVEL AND
OUTDOOR ACTIVITY IS STRONGLY DISCOURAGED.

&&

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST SUN JAN 2 2011

.MODEL DISCUSSION...MODELS ARE IN GOOD AGREEMENT FOR THE NEXT FEW
DAYS. THE BIGGEST QUESTION IS IN REGARDS TO HOW THE LOW SOUTH OF THE
ALEUTIAN ISLANDS WILL SPLIT BETWEEN MONDAY EVENING AND TUESDAY NIGHT.
MODELS THEN ARE MOSTLY TOGETHER WITH THESE TWO LOWS AFTER THAT.
MODELS DO SPLIT ON THEIR SOLUTION FOR A LARGE LOW IN THE WESTERN
ALEUTIANS/BERING SEA AROUND THURSDAY. THAT WILL NEED TO BE WATCHED
OVER THE NEXT FEW DAYS.

.ANALYSIS AND UPPER LEVELS...THE THREE WAVE HEMISPHERIC PATTERN
CONTINUES TODAY WITH THE LARGEST TROUGH EXTENDING FROM THE NORTH POLE
THROUGH THE WESTERN BERING SEA. A STRONG 250 MB JET STREAM RUNS JUST
SOUTH OF THIS TROUGH AND REMAINS IN A FAVORABLE LOCATION FOR THE
DEVELOPMENT OF SURFACE LOWS THAT WILL MOVE INTO THE AREA.
AT THE SURFACE THERE IS A LARGE COMPLEX LOW OVER THE BERING SEA
REGION. THERE ARE FOUR SEPARATE LOW CENTERS IN THIS LOW COMPLEX WITH
THE LARGEST BEING IN THE NORTHERN BERING SEA NEAR ST MATTHEW ISLAND.
A STRENGTHENING LOW IS SOUTH OF THE ALEUTIAN ISLANDS IN THE FAVORABLE
DEVELOPMENT AREA ALONG THE JET STREAM.
THERE IS A WEATHER FRONT BRINGING GALE FORCE WINDS TO THE GULF OF
ALASKA THAT WILL REACH THE NORTH GULF COAST LATER TONIGHT.

.SHORT TERM FORECAST...WINDS WILL INCREASE AHEAD OF THE FRONT IN THE
GULF OF ALASKA. THIS FRONT WILL CAUSE A BARRIER JET TO DEVELOP ALONG
THE NORTH GULF COAST THAT WILL PERSIST INTO TUESDAY NIGHT.
AS THE PRESSURE GRADIENT IN COOK INLET BECOMES STRONGER FROM NORTH TO
SOUTH THE WINDS OUT OF TURNAGAIN ARM WILL ONCE AGAIN BECOME DOWN THE
INLET RESULTING IN THE WINDS IN ANCHORAGE TO GO NORTHEAST AND
DIMINISH. TEMPERATURES WILL DROP AROUND THE ANCHORAGE AREA AS THIS
OCCURS THIS EVENING.
SOUTHWEST MAINLAND ALASKA SHOULD SEE ANY PRECIPITATION REMAIN ALL
SNOW THROUGH TONIGHT. AREAS IN EASTERN BRISTOL BAY MAY SEE A SWITCH
BACK TO RAIN MONDAY AS THE NEXT SYSTEM PUSHES SOME WARMER AIR INTO
THE REGION.
THE REST OF THE BERING SEA SHOULD REMAIN IN SNOW SHOWERS IN THE COLD
SECTOR OF THE COMPLEX LOW.

.LONG TERM FORECAST...THERE WILL BE A SLOW CHANGE IN WEATHER PATTERN
OVER THE COURSE OF THE WEEK AS THE UPPER LEVEL TEMPERATURES COOL AND
SHOULD BECOME MORE SEASONAL BY LATE IN THE WEEK. AN UPPER LEVEL RIDGE
WILL BUILD INTO THE EASTERN BERING SEA/SOUTHWEST ALASKA BY NEXT
WEEKEND WHICH WILL SHIFT THE STORM TRACK TO THE WESTERN AND CENTRAL
BERING SEA.

.AER/ALU...WATCH/WARNING/ADVISORY SUMMARY
PUBLIC...WINTER WEATHER ADVISORY 145.
MARINE...GALE 120 125 130 150 155 165 170 171 172 179 180 185.
         HEAVY FREEZING SPRAY 179 185.
FIRE WEATHER...NONE.

JAN 11