Sea Ice Advisory


FZAK80 PAFC 272227
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS 
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
225 PM AKDT FRIDAY 27 MARCH 2015 

FORECAST VALID...WEDNESDAY 1 APRIL 2015

ANALYSIS CONFIDENCE...HIGH TO MODERATE
                      
SYNOPSIS...A SERIES OF LOW PRESSURE SYSTEMS WILL MOVE EASTWARD OVER 
THE SOUTHERN BERING SEA THROUGH WEDNESDAY MORNING. 

-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-
PKZ185-SAINT MATTHEW ISLAND WATERS-

THE MAIN ICE EDGE LIES FROM THE ALASKA COAST FROM A POINT NEAR 58N 
157.6W TO 58N 165.4W TO 57.7N 169.5W TO 57.2N 171W TO 57.5N 173.6W 
TO 61.9N 178.7W AND CONTINUES ALONG THE RUSSIAN COAST. THE ICE EDGE 
IS MAINLY OPEN WATER. 

FORECAST THROUGH WEDNESDAY FOR THE BERING SEA...NORTHERLY WINDS WILL 
CONTINUE THROUGH WEDNESDAY...ALTHOUGH BRIEF PERIODS OF EASTERLY OR 
NORTHEASTERLY WINDS EAST OF 168W WILL OCCUR AS LOWS PASS BY TO THE 
SOUTH. THE ICE EDGE IS EXPECTED TO MOVE TO THE SOUTHWEST 10 TO 20 NM 
THROUGH WEDNESDAY.

-COOK INLET-

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

COOK INLET ANALYSIS CONFIDENCE...HIGH

SYNOPSIS FOR COOK INLET...LOW PRESSURE SYSTEMS WILL MOVE INTO THE 
GULF OF ALASKA ON SATURDAY AND TUESDAY...WITH A FRONT EXTENDING 
NORTH AND EAST FROM THE LOW. 
 
THE MAIN ICE EDGE LIES FROM THE COAST FROM 60.7N 151.4W TO 60.5N 
151.9W TO 60.7N 152W. THE ICE EDGE IS MAINLY OPEN WATER. LOW 
CONCENTRATIONS OF ICE ARE ALSO PRESENT IN SHALLOW BAYS ALONG THE 
WEST COAST OF LOWER COOK INLET.

FORECAST FOR COOK INLET THROUGH WEDNESDAY...LIGHT TO MODERATE 
NORTHERLY WINDS WILL PERSIST THROUGH WEDNESDAY. ABOVE NORMAL HIGHS 
ARE FORECAST THROUGH WEDNESDAY...THEREFORE EXPECT ICE TO SLOWLY MELT 
THROUGH THE MIDDLE OF NEXT WEEK. NEW ICE WILL LIKELY FORM EACH NIGHT 
WHERE TEMPERATURES FALL BELOW FREEZING...THEN MELT DURING THE 
DAYTIME.

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