Sea Ice Advisory


FZAK80 PAFC 282312
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS  
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA 
215 PM AKST WEDNESDAY 28 JANUARY 2015 

FORECAST VALID...MONDAY 2 FEBRUARY 2015

ANALYSIS CONFIDENCE...MODERATE
                      
SYNOPSIS...A LARGE LOW OVER THE GULF OF ALASKA IS EXPECTED TO 
PERSIST THROUGH MONDAY. A RIDGE OF HIGH PRESSURE OVER THE CENTRAL 
BERING SEA WILL SLOWLY SHIFT EAST OVER MAINLAND ALASKA THIS 
WEEKEND... AS ANOTHER WEAK LOW MOVES OVER THE WESTERN BERING SEA 
SUNDAY.  
 
-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-
PKZ160-BRISTOL BAY-
PKZ180-KUSKOKWIM DELTA AND ETOLIN STRAIT-
PKZ181-NORTH AND WEST OF NUNIVAK ISLAND-

THE MAIN ICE EDGE LIES FROM THE ALASKA COAST NEAR 57.4N 158.1W TO 
58.0N 157.9W TO 58.6N 166.6W TO 59.6N 170.7W TO 61.3N 171.5W TO 
62.7N 177.0W AND CONTINUES ALONG THE RUSSIAN COAST. THE ICE EDGE IS 
MAINLY OPEN WATER. 

FORECAST THROUGH MONDAY FOR THE BERING SEA EAST OF 175W...NORTHERLY 
TO NORTHEASTERLY FLOW IS EXPECTED TO PERSIST OVER THE ICE EDGE 
THROUGH MONDAY. THE ICE EDGE IS EXPECTED TO SHIFT TO THE SOUTHWEST 
20 TO 35 NM THROUGH MONDAY. 

FORECAST THROUGH MONDAY FOR THE BERING SEA WEST OF 175W...SOUTHERLY 
TO EASTERLY FLOW IS EXPECTED TO PERSIST THROUGH SUNDAY... BECOMING 
LIGHTER AND VARIABLE ON MONDAY. THE ICE EDGE IS EXPECTED TO SHIFT TO 
THE NORTHWEST 10 TO 25 NM THROUGH MONDAY.

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

COOK INLET ANALYSIS CONFIDENCE...MODERATE 

SYNOPSIS FOR COOK INLET...A LARGE LOW OVER THE GULF OF ALASKA IS 
EXPECTED TO PERSIST THROUGH MONDAY... WITH TEMPERATURES EXPECTED TO 
SLOWLY INCREASE THROUGHOUT THIS WEEKEND.

THE MAIN ICE EDGE LIES FROM THE COAST NEAR 60.3N 151.3W TO 60.6N 
151.4W TO 60.6N 151.6W TO 60.7N 151.8W TO 60.4N 152.3W. THE ICE EDGE 
IS 1 TO 3 TENTHS NEW SEA ICE. LOW CONCENTRATIONS OF ICE ARE ALSO 
PRESENT IN SHALLOW BAYS ALONG THE WEST COAST OF LOWER COOK INLET. 

FORECAST FOR COOK INLET THROUGH MONDAY...NORTHERLY FLOW IS EXPECTED 
TO PERSIST OVER MUCH OF THE INLET WITH TEMPERATURES SLOWLY RISING TO 
NEAR NORMAL BY THE WEEKEND. DUE TO THE NORTHERLY WIND FLOW... IT IS 
POSSIBLE THAT SOME SEA ICE MAY PASS INTO LOWER COOK INLET... LIKELY 
NEAR THE WEST FORELAND MOVING WITH THE TIDES THROUGH MONDAY. THE 
OVERALL ICE EDGE MAY EXPAND UP TO 15 NM TO THE SOUTH IN LOWER COOK 
INLET THROUGH MONDAY. 

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

$$