FZAK80 PAFC 302214
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS 
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
214 PM AKDT MONDAY 30 MARCH 2015 

FORECAST VALID...SATURDAY 4 APRIL 2015

ANALYSIS CONFIDENCE...HIGH
                      
SYNOPSIS...A SERIES OF LOW PRESSURE SYSTEMS WILL MOVE EASTWARD OVER 
THE SOUTHERN BERING SEA THROUGH THURSDAY...THEN A SERIES OF LOWS 
WILL MOVE EASTWARD ACROSS THE CENTRAL BERING SEA THROUGH SATURDAY. 

-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 CAPE NEWENHAM TO 
57.5N 169.7W TO 57.6N 170.7W TO 57.1N 172.7W TO 61.9N 178.8E AND 
CONTINUES ALONG THE RUSSIAN COAST. LOW CONCENTRATIONS OF ICE ARE 
ALSO PRESENT IN SHALLOW BAYS ALONG NORTHERN BRISTOL BAY. THE ICE 
EDGE IS MAINLY OPEN WATER. 

FORECAST THROUGH SATURDAY FOR THE BERING SEA...NORTHERLY WINDS WILL 
CONTINUE THROUGH WEDNESDAY. AS THE LOW TRACK SHIFTS NORTHWARD FOR 
THE REST OF THE WEEK...WINDS WILL SHIFT TO SOUTHERLY AND WESTERLY AS 
FRONTS PASS THROUGH. THE ICE EDGE IS EXPECTED TO MOVE TO THE 
NORTHEAST 25 TO 40 NM THROUGH SATURDAY.

-COOK INLET-

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

COOK INLET ANALYSIS CONFIDENCE...HIGH

SYNOPSIS FOR COOK INLET...A LOW PRESSURE SYSTEM WILL MOVE EASTWARD 
THROUGH THE GULF OF ALASKA ON TUESDAY. ANOTHER LOW WILL MOVE THROUGH 
THE GULF THURSDAY INTO FRIDAY...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 
151.5W TO 60.3N 151.9W TO 60.7N 151.9W. 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 SATURDAY...LIGHT TO MODERATE 
NORTHERLY WINDS WILL PERSIST THROUGH SATURDAY...ALTHOUGH THERE WILL 
BE A BRIEF PERIOD OF SOUTHERLY WINDS ON TUESDAY. ABOVE NORMAL HIGHS 
ARE FORECAST THROUGH SATURDAY...THEREFORE EXPECT ICE TO CONTINUE TO  
MELT THROUGH THE END OF THE 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.



National Weather Service Anchorage Forecast Office: http://pafc.arh.noaa.gov