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FZAK80 PAFC 292116
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS 
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA 
130 PM AKDT WEDNESDAY 29 OCTOBER 2014 

FORECAST VALID...MONDAY 3 NOVEMBER 2014

ANALYSIS CONFIDENCE...MODERATE TO HIGH.
                      
SYNOPSIS...AN AREA OF LOW PRESSURE OVER THE NORTHERN BEAUFORT SEA 
WILL WEAKEN AS IT SLOWLY DRIFTS INTO THE NORTHERN ARCTIC FRIDAY 
AFTERNOON. HIGH PRESSURE WILL THEN BUILD ACROSS MUCH OF THE BEAUFORT 
AND CHUKCHI SEAS THROUGH MONDAY.

-ARCTIC OCEAN-

ICE COVERED.

-CHUKCHI SEA-
PKZ500-WESTERN US ARCTIC OFFSHORE-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ215-KOTZEBUE SOUND-

THE MAIN ICE EDGE LIES FROM A POINT ON THE ARCTIC COAST NEAR 68.9N 
165.4W TO 70.1N 162.3W TO 70.9N 161.2W TO 71.3N 160.8W TO 72.2N 
162.1W TO 72.3N 166.2W TO 71.8N 167.9W TO 72.1N 170.2W TO 72.9N 
171.3W TO 73.0N 176.6W TO 71.8N 178.6E AND CONTINUES INTO THE 
RUSSIAN ARCTIC. THE ICE EDGE CONSISTS OF MAINLY OPEN WATER...WITH A 
FEW PATCHES OF GREASE ICE. NEW TO YOUNG ICE LAYS IN THE PROTECTED 
WATERS OF THE ALASKA COAST FROM PEARD BAY TO POINT HOPE. NEW TO 
YOUNG SEA ICE HAS ALSO BEEN OBSERVED IN THE SHALLOW WATERS OF 
KOTZEBUE SOUND AND THE PROTECTED WATERS NEAR KIVALINA.
 
FORECAST THROUGH MONDAY FOR THE CHUKCHI SEA...LIGHT NORTHWESTERLY 
WINDS WILL BECOME VARIABLE ON FRIDAY. WINDS WILL THEN BECOME  
MODERATE WHILE SHIFTING TO THE EAST/NORTHEAST WITH PERIODS OF STRONG 
WINDS OVER THE WEEKEND AND INTO EARLY NEXT WEEK. THE OVERALL ICE 
EDGE IS EXPECTED TO EXPAND TO THE SOUTH/SOUTHWEST 10 TO 20 NM BY 
MONDAY. NEW ICE WILL CONTINUE TO INCREASE ACROSS THE PROTECTED 
SHALLOW AREAS ALONG THE COAST FROM KOTZEBUE SOUND UP TO PEARD BAY 
DURING TIMES OF LIGHT WINDS.

-BEAUFORT SEA-
PKZ505-CENTRAL US ARCTIC OFFSHORE-
PKZ510-EASTERN US ARCTIC OFFSHORE-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-SATURDAY

ICE COVERED...WITH AN EXCEPTION OF AN AREA OF OPEN WATER THAT LIES 
FROM 71.5N 151.4W TO 71.3N 146.7W TO 71.6N 146.7W TO 71.7N 144.5W TO 
71.2N 144.0W 71.0N 146.0W TO 70.6N 145.0W TO 71.0N 147.3W TO 70.9N 
149.3W TO 71.1N 179.3W TO 71.5N 151.4W. 

FORECAST THROUGH MONDAY FOR THE BEAUFORT SEA...LIGHT TO MODERATE 
WESTERLY WINDS WILL PERSIST THROUGH THURSDAY MORNING BEFORE BECOMING 
LIGHT FROM THE NORTH. WINDS WILL THEN BECOME LIGHT TO MODERATE FROM 
THE EAST LATE FRIDAY AND PERSIST THROUGH THE BEGINNING OF NEXT WEEK. 
AREAS WITH LOWER CONCENTRATIONS OF SEA ICE ARE EXPECTED TO INCREASE 
IN CONCENTRATION AND THICKNESS THROUGH MONDAY.

-BERING SEA-
PKZ200-NORTON SOUND-
PZK210-DALL POINT TO WALES-

NEW SEA ICE IS CONTINUING TO SLOWLY FORM IN THE SHALLOW PROTECTED 
WATERS OF NORTON SOUND FROM PORT SAFETY TO GOLOVIN TO KOYUK TO 30 NM 
NORTH OF SCAMMON BAY.

FORECAST THROUGH MONDAY FOR THE BERING SEA...NEW SEA ICE IS EXPECTED 
TO SLOWLY CONTINUE FORMING IN THE SHALLOW PROTECTED WATERS OF NORTON 
SOUND THROUGH MONDAY.

$$



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