Sea Ice Advisory


FZAK80 PAFC 172342
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS  
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA 
241 PM AKST WEDNESDAY 17 DECEMBER 2014 

FORECAST VALID...MONDAY 22 DECEMBER 2014

ANALYSIS CONFIDENCE...MODERATE
                      
SYNOPSIS...A SERIES OF LARGE LOWS WILL PASS THROUGH THE BERING SEA 
AND GULF OF ALASKA THROUGH MONDAY. 

-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ500-WESTERN US ARCTIC OFFSHORE-
PKZ505-CENTRAL US ARCTIC OFFSHORE-
PKZ510-EASTERN US ARCTIC OFFSHORE-
PKZ220-WALES TO CAPE THOMPSON-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-

ICE COVERED.

-BERING SEA-

PKZ215-KOTZEBUE SOUND-
PKZ200-NORTON SOUND-
PKZ210-DALL POINT TO WALES-
PKZ180-KUSKOKWIM DELTA AND ETOLIN STRAIT-
PKZ181-NORTH AND WEST OF NUNIVAK ISLAND-

THE MAIN ICE EDGE LIES FROM THE ALASKA COAST NEAR 59.2N 162.1W TO 
59.4N 163.5W TO 60.9N 168.1W TO 62.4N 168.8W TO 64.6N 168.4W TO 
64.6N 169.6W TO 63.9N 170.1W TO 63.6N 172.7W TO 63.7N 173.6W TO 
64.1N 173.6 TO 64.3N 173.2W AND CONTINUES ALONG THE RUSSIAN COAST. 
THE ICE EDGE IS MAINLY OPEN WATER AND 5 TO 7 TENTHS NEW AND YOUNG 
ICE.

ALONG THE COAST OF SAINT LAWRENCE ISLAND...NEW ICE OF 3 TO 7 TENTHS 
COVERAGE EXTENDS UP TO 10 NM FROM THE COAST. THERE IS NEW AND YOUNG 
ICE IN SHALLOW BAYS OF NORTHERN BRISTOL BAY AS WELL.

FORECAST THROUGH MONDAY FOR THE BERING SEA...SOUTHEASTERLY FLOW WILL 
CONTINUE THROUGH THURSDAY...THEN FLOW WILL BECOME NORTHEASTERLY ON 
FRIDAY AND NORTHERLY SATURDAY THROUGH MONDAY. THE ICE EDGE NORTH OF 
SAINT LAWRENCE ISLAND IS EXPECTED TO EXPAND TO THE SOUTH 30 TO 45 NM 
THROUGH MONDAY. THE ICE EDGE SOUTH OF SAINT LAWRENCE ISLAND IS 
EXPECTED TO MOVE TO THE WEST-SOUTHWEST 15 TO 30 NM THROUGH MONDAY.

-COOK INLET-
PKZ140-COOK INLET NORTH OF KAMISHAK BAY AND ENGLISH BAY-

COOK INLET ANALYSIS CONFIDENCE...LOW TO MODERATE.

SYNOPSIS FOR COOK INLET...A SERIES OF LOWS WILL PASS OVER THE GULF 
OF ALASKA THROUGH FRIDAY. A LOW WILL REMAIN NEARLY STATIONARY OVER 
THE GULF OF ALASKA SATURDAY THROUGH MONDAY. 

LOW CONCENTRATIONS OF NEW SEA ICE ARE CURRENTLY MOVING WITH THE 
TIDES WITHIN KNIK ARM AND NEAR THE SUSITNA RIVER DELTA. 5 TO 7 TENTHS
NEW ICE IS REMAINING THROUGH THE DAYTIME HOURS NORTH OF FIRE ISLAND.

FORECAST FOR COOK INLET THROUGH MONDAY...NEW SEA ICE IS EXPECTED TO 
REMAIN NEARLY STEADY IN CONCENTRATION NORTH OF FIRE ISLAND THROUGH 
MONDAY.

PLEASE NOTE...COOK INLET SEA ICE CHANGES SIGNIFICANTLY WITH THE 
TIDES.