Blizzard Warning 25, NWS Anchorage, AK

286 
WWAK42 PAFC 030125
WSWALU

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
425 PM AKST THU DEC 2 2010

AKZ161-031430-
/X.UPG.PAFC.BZ.A.0025.101203T1200Z-101204T0000Z/
/X.EXB.PAFC.BZ.W.0025.101203T0400Z-101204T0100Z/
BRISTOL BAY-
INCLUDING THE CITIES OF...KING SALMON...DILLINGHAM...NAKNEK...
PILOT POINT
425 PM AKST THU DEC 2 2010

...BLIZZARD WARNING IN EFFECT FROM 7 PM THIS EVENING TO 4 PM AKST
FRIDAY...

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 THE BLIZZARD WATCH IS NO LONGER IN EFFECT.

A STRONG LOW PRESSURE SYSTEM AND ASSOCIATED FRONT WILL MOVE
ACROSS THE BERING SEA TODAY AND INTO THE BRISTOL BAY AREA TONIGHT.
TEMPERATURES WILL BE BELOW FREEZING ACROSS INLAND AREAS OF BRISTOL
BAY AS THE WINDS AND MOISTURE ARRIVE LATE TONIGHT. WINDS TO 55 MPH
ARE OCCURRING OVER THE WESTERN CAPES AND WINDS OF 25 TO 40 MPH
WILL DEVELOP ACROSS THE REST OF THE AREA. THE COMBINATION OF
FALLING AND BLOWING SNOW ARE EXPECTED TO REDUCE VISIBILITY TO LESS
THAN ONE QUARTER MILE LATE TONIGHT AND FRIDAY. EXPECT SNOW AMOUNTS
OF 4 TO 12 INCHES WITH GREATEST AMOUNTS WEST OF KING SALMON.
CONDITIONS WILL IMPROVE ON FRIDAY AFTERNOON AS THE FRONT MOVES
INLAND.

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.

&&

$$

AKZ155-031430-
/X.EXT.PAFC.BZ.W.0025.000000T0000Z-101203T1500Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
425 PM AKST THU DEC 2 2010

...BLIZZARD WARNING NOW IN EFFECT UNTIL 6 AM AKST FRIDAY...

THE BLIZZARD WARNING IS NOW IN EFFECT UNTIL 6 AM AKST FRIDAY. 

A STRONG LOW PRESSURE SYSTEM AND ASSOCIATED FRONT WILL MOVE
ACROSS THE BERING SEA TODAY. TEMPERATURES WILL BE BELOW FREEZING
AROUND THE KUSKOKWIM DELTA AS THE WINDS AND MOISTURE ARRIVE THIS
EVENING. WINDS ARE EXPECTED TO BE 25 TO 40 MPH WITH GUSTS TO 50
MPH ALONG THE COAST. THE COMBINATION OF FALLING AND BLOWING SNOW
WILL REDUCE VISIBILITY TO LESS THAN ONE QUARTER MILE THIS
AFTERNOON AND TONIGHT. CONDITIONS WILL IMPROVE LATE TONIGHT AS THE
FRONT MOVES INLAND.

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.

&&

$$

AKZ152-031430-
/X.NEW.PAFC.WW.Y.0023.101203T1500Z-101204T0300Z/
LOWER KUSKOKWIM VALLEY-
INCLUDING THE CITIES OF...ANIAK...SLEETMUTE
425 PM AKST THU DEC 2 2010

...WINTER WEATHER ADVISORY FOR SNOW IN EFFECT FROM 6 AM TO 6 PM
AKST FRIDAY...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT
FROM 6 AM TO 6 PM AKST FRIDAY. 

A STORM SYSTEM IN THE BERING SEA WILL MOVE INLAND TONIGHT AND INTO
TOMORROW. THIS WEATHER SYSTEM WILL BRING SNOW TO THE KUSKOKWIM
VALLEY. EXPECT 4 TO 8 INCHES OF SNOW ON FRIDAY ACROSS AREAS NORTH
OF THE KUSKOKWIM RIVER...WITH 2 TO 4 INCHES POSSIBLE SOUTH OF THE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TRAVEL IN THE AFFECTED AREA WILL BE HAZARDOUS. EXPECT AREAS OF
REDUCED VISIBILITIES IN SNOW.

&&

$$

134 
WWAK42 PAFC 031336
WSWALU

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
436 AM AKST FRI DEC 3 2010

AKZ155-031445-
/X.CAN.PAFC.BZ.W.0025.000000T0000Z-101203T1500Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
436 AM AKST FRI DEC 3 2010

...BLIZZARD WARNING IS CANCELLED...

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

WINDS HAVE DROPPED BELOW 35 MPH...AND VISIBILITIES HAVE IMPROVED
TO ONE MILE OR GREATER ACROSS THE KUSKOKWIM DELTA. THEREFORE...THE
BLIZZARD WARNING HAS BEEN CANCELLED. 

$$

AKZ161-040100-
/X.CON.PAFC.BZ.W.0025.000000T0000Z-101204T0100Z/
BRISTOL BAY-
INCLUDING THE CITIES OF...KING SALMON...DILLINGHAM...NAKNEK...
PILOT POINT
436 AM AKST FRI DEC 3 2010

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 4 PM AKST THIS
AFTERNOON...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 4 PM AKST THIS
AFTERNOON. 

A STRONG LOW PRESSURE SYSTEM AND ASSOCIATED FRONT WILL CONTINUE TO
MOVE EASTWARD THROUGH THE BRISTOL BAY AREA TODAY. TEMPERATURES
WILL REMAIN AT OR BELOW FREEZING ACROSS INLAND AREAS. WINDS TO 55
MPH ARE OCCURRING OVER THE WESTERN CAPES WHILE WINDS OF 25 TO 40
MPH ARE OCCURRING ACROSS THE REST OF THE AREA. THE COMBINATION OF
FALLING AND BLOWING SNOW WILL CONTINUE TO REDUCE VISIBILITY TO
LESS THAN ONE QUARTER MILE THROUGH THE DAY TODAY. EXPECT SNOW
AMOUNTS OF 4 TO 12 INCHES WITH GREATEST AMOUNTS WEST OF KING
SALMON. CONDITIONS WILL IMPROVE THIS AFTERNOON AS THE FRONT MOVES
INLAND.

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.

&&

$$

AKZ152-040300-
/X.CON.PAFC.WW.Y.0023.101203T1500Z-101204T0300Z/
LOWER KUSKOKWIM VALLEY-
INCLUDING THE CITIES OF...ANIAK...SLEETMUTE
436 AM AKST FRI DEC 3 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM AKST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM AKST THIS
EVENING. 

A STORM SYSTEM OVER THE EASTERN BERING WILL MOVE INLAND TODAY. THIS
WEATHER SYSTEM WILL BRING SNOW TO THE KUSKOKWIM VALLEY. EXPECT 4
TO 8 INCHES OF SNOW TODAY ACROSS AREAS NORTH OF THE KUSKOKWIM
RIVER...WITH 2 TO 4 INCHES POSSIBLE SOUTH OF THE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TRAVEL IN THE AFFECTED AREA WILL BE HAZARDOUS. EXPECT AREAS OF
REDUCED VISIBILITIES IN SNOW.

&&

$$

179 
WWAK42 PAFC 032107
WSWALU

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
1207 PM AKST FRI DEC 3 2010

AKZ161-032215-
/X.CAN.PAFC.BZ.W.0025.000000T0000Z-101204T0100Z/
BRISTOL BAY-
INCLUDING THE CITIES OF...KING SALMON...DILLINGHAM...NAKNEK...
PILOT POINT
1207 PM AKST FRI DEC 3 2010

...BLIZZARD WARNING IS CANCELLED...

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

THE FRONT THAT BROUGHT BLIZZARD CONDITIONS TO THE BRISTOL BAY
REGION HAS MOVED INLAND. WEATHER CONDITIONS ARE EXPECTED TO
CONTINUE TO IMPROVE THROUGH THE REST OF THE DAY.

$$

AKZ152-040300-
/X.CON.PAFC.WW.Y.0023.000000T0000Z-101204T0300Z/
LOWER KUSKOKWIM VALLEY-
INCLUDING THE CITIES OF...ANIAK...SLEETMUTE
1207 PM AKST FRI DEC 3 2010

...WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT UNTIL 6 PM
AKST THIS EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM AKST THIS
EVENING. 

A STORM SYSTEM OVER THE EASTERN BERING WILL MOVE INLAND TODAY.
THIS WEATHER SYSTEM WILL BRING SNOW TO THE KUSKOKWIM VALLEY.
EXPECT 4 TO 8 INCHES OF SNOW TODAY ACROSS AREAS NORTH OF THE
KUSKOKWIM RIVER...WITH 2 TO 4 INCHES POSSIBLE SOUTH OF THE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TRAVEL IN THE AFFECTED AREA WILL BE HAZARDOUS. EXPECT AREAS OF
REDUCED VISIBILITIES IN SNOW.

&&

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKST WED DEC 1 2010

.MODEL DISCUSSION...MODEL INITIALIZATIONS ARE FAIRLY REASONABLE.
MODEL SYNOPTIC FORECAST TRENDS IN AND GENERALLY GOOD AGREEMENT AND
REASONABLE THROUGH THE SHORT TERM (SAT AFTERNOON). BIGGEST CHANGE IN
IN THE LAST THREE MODEL RUNS HAVE BEEN WITH THE ADJUSTMENT OF THE
SURFACE LOW MOVING INTO NEAR THE SW COAST OF ALASKA FRI AND ITS
ASSOCIATED FRONT. MODELS REMAIN CONSISTENT ON TRIPLE POINT
DEVELOPMENT NEAR KODIAK ISLAND FRI MORNING...HOWEVER THERE ARE SOME
DIFFERENCES ON TIMING AND TRACK OF THIS FEATURE INTO SOUTHCENTRAL
ALASKA. THIS CENTER WILL LIKELY MOVE OVER THE KENAI PEN FRI NIGHT.

.UPPER LEVELS...
RIDGING OVER THE EASTERN BERING SEA MOVES EAST TO OVER THE GULF OF
ALASKA AND SOUTHCENTRAL ALASKA LATE TONIGHT THEN TO THE WESTERN GULF
THU AFTERNOON. A TROUGH OVER THE EASTERN BERING SEA TODAY MOVES EAST
AND WEAKENS AS A DEVELOPING CENTER NEAR ITS BASE DRIVES SOUTH INTO
THE NE PACIFIC THU. SO THE TROUGH IS FAIRLY DIFFUSE BY THE TIME IT
MOVES THROUGH THE INTERIOR AND SOUTHCENTRAL ALASKA THU. A STRONG LOW
MOVES ACROSS THE BERING SEA TO NEAR THE SW COAST OF ALASKA FRI AND
SLOWLY WEAKENS AND DRIFTS TO NEAR BRISTOL BAY SAT. A STRONG
SOUTHWESTERLY JET SETS UP OVER THE AK PEN AND SW ALASKA THU EVENING
AND SPREADS OVER SOUTHCENTRAL ALASKA FRI MORNING. BY FRI
EVENING...THE MAIN CORE OF THE JET EXTENDS FROM SOUTH OF THE AK
PEN...OVER THE GULF OF ALASKA...TO THE EASTERN GULF COAST.

.SURFACE SHORT TERM FORECAST...

SOUTHCENTRAL ALASKA
LOCALLY GUSTY WINDS ARE SLOWLY DIMINISHING ACROSS THE NORTH GULF
COAST TODAY AS THE LOW CENTER WEAKENS OVER THE PANHANDLE. ALTHOUGH
PRESSURE GRADIENTS WEAKEN...THERMAL GRADIENTS ASSOCIATED WITH THE
ARCTIC/POLAR AIRMASS OVER THE COPPER RIVER BASIN AND MARITIME AIR
OVER THE GULF WILL REMAIN RELATIVELY STRONG. SO WOULD EXPECT LOCALLY
BRISK GAP WINDS TO CONTINUE OVER THE NORTH GULF THROUGH TONIGHT.
PATCHY FOG WAS OBSERVED ACROSS THE ANCHORAGE BOWL THIS MORNING. IT IS
A GOOD CHANCE THAT IT WILL DEVELOP AGAIN TONIGHT WITH STRONG
INVERSIONS TONIGHT. ON DETRACTOR WILL BE ON HOW MUCH CLOUD COVER
COMES IN WITH APPROACHING WEAK FRONT. FRONT APPROACHING SW ALASKA
TODAY WILL WEAKEN AS IT MOVES ACROSS SOUTHCENTRAL ALASKA THU. CURRENT
THOUGHT IS THAT THE BEST CHANCE OF SNOW WILL BE NEAR KODIAK AND
LESSER AMOUNTS OVER THE THE SOUTHCENTRAL MAINLAND. THE NEXT FRONT
APPROACHING FRI/FRI NIGHT WILL BRING IN THE BEST SHOT OF SIGNIFICANT
SNOWFALL. WINDS AHEAD OF FRONT WILL ALSO PRODUCE STRONG WINDS OVER
THE GULF OF ALASKA AND BRISK GAP WINDS ACROSS SOUTHCENTRAL
ALASKA...ESPECIALLY OVER THE EASTERN KENAI PEN AND ANCHORAGE BOWL.
COULD SEE BLOWING SNOW PROBLEMS OVER THE EASTERN KENAI FRI. TIMING
AND INTENSITY OF THIS POTENTIAL EVENT IS STILL A LITTLE UNCERTAIN AT
THIS POINT. FOR NOW WILL SHOW DETERIORATING TREND IN FORECAST
CONDITIONS

WESTERN ALASKA.
FRONT APPROACHING SW ALASKA THIS AFTERNOON ACROSS THE AREA LATE
TONIGHT. SO SNOW SHOULD GIVE WAY TO A FEW BREAKS AND SNOW SHOWERS
LATE TONIGHT AND THU. A LOW CENTER OVER THE WESTERN BERING SEA LATE
TONIGHT MOVES TO NEAR NUNIVAK ISLAND FRI MORNING THEN WEAKENS OVER
THE SW INTERIOR FRI NIGHT. A SECONDARY LOW CENTER THEN MOVES TO OVER
BRISTOL BAY EARLY SAT. THE ASSOCIATED FRONT MOVES TO NEAR THE EASTERN
ALEUTIANS AND PRIBILOF ISLANDS LATE FRI MORNING THEN TO THE SW
MAINLAND THU EVENING. THE FRONT THEN MOVES INTO SOUTHCENTRAL ALASKA
ON FRI. MODELS DIFFER SOME ON THE AMOUNT OF WARM ADVECTION AHEAD OF
FRONT INTO SW ALASKA THU NIGHT. THE GFS SEEMS TO BE THE MOST
AGGRESSIVE AND WOULD SUGGEST MIXED RAIN AND IN BRISTOL BAY COASTAL
LOCATIONS AND SNOW OVER MUCH OF THE REMAINDER OF SW ALASKA. STRONG
WINDS ARE EXPECTED WITH AND AHEAD OF THE APPROACHING FRONT SO BLOWING
SNOW IS ALSO LIKELY OVER INLAND BRISTOL BAY AND OVER MUCH OF THE
DELTA. MAY EVEN SEE A FEW POCKETS OF FREEZING RAIN INTO BRISTOL BAY
THU NIGHT. SINCE MODELS HAVE UNDERGONE A SIGNIFICANT SHIFT...WILL
TREND FORECAST CONDITIONS DOWN AND WAIT FOR ANOTHER RUN BEFORE
CONSIDERING WWA.

.LONG TERM FORECAST...AS GULF/N PACIFIC LOW STALLS LATE SAT/SUN
A WAVE MAY MOVE N ALONG FRONT AND DEVELOP A LOW OVER EASTERN GULF
COAST THEN AND BRING ANOTHER SHOT OF RAIN/SNOW TO OUTER COAST
SUN...AND KENAI LATE SUN/MON. WHICH WOULD THEN MOVE TOWARD PADQ...BY
LATE MON. N TO NE SURFACE PRESSURE GRADIENTS WILL TIGHTEN UP OVER
S-CENTRAL AND COPPER BASIN SUN/MON...RETURNING GUSTY OFFSHORE FLOW.
SW AK AND MOST OF ALEUTIANS TO REMAIN UNDER COOL NORTHERLY FLOW
THEN...WITH SOME SCATTERED -SHSN POSSIBLE FROM ABOUT PADU EAST.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE....STORMS 176 175. GALES 150 155 170 172.
FIRE WEATHER...NONE.

RMC DEC 10