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FZAK80 PAFC 012200
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS 
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
205 PM AKDT WEDNESDAY 1 APRIL 2015 

FORECAST VALID...MONDAY 6 APRIL 2015

ANALYSIS CONFIDENCE...HIGH
                      
SYNOPSIS...A LOW OVER THE GULF OF ALASKA WILL SHIFT SOUTHEAST 
THROUGH THE END OF THE WEEK. A RIDGE OF HIGH PRESSURE OVER THE 
CENTRAL BERING SEA WILL SHIFT OVER THE WEST COAST OF ALASKA FRIDAY. 
A SERIES OF LOWS WILL SHIFT FROM THE CENTRAL BERING SEA TO THE GULF 
OF ALASKA SATURDAY 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-
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 
58.0N 167.0W TO 57.2N 172.7W TO 58.6N 176.1W TO 61.8N 178.8W AND 
CONTINUES ALONG THE RUSSIAN COAST. LOW CONCENTRATIONS OF ICE ARE 
ALSO PRESENT IN SHALLOW BAYS ALONG NORTHERN BRISTOL BAY. THE ICE 
EDGE IS OPEN WATER. 

FORECAST THROUGH MONDAY FOR THE BERING SEA...SOUTHERLY TO 
SOUTHEASTERLY FLOW WILL DEVELOP OVER THE WESTERN BERING SEA LATE 
WEDNESDAY AS THE NEXT LOW MOVES INTO THE BERING SEA. THE 
SOUTHEASTERLY FLOW WILL SPREAD EAST ACROSS THE BERING SEA THURSDAY 
THROUGH FRIDAY. WINDS WILL BECOME VARIABLE THROUGH THE WEEKEND AS A 
SECOND LOW MOVES OVER THE BERING SEA... WITH NORTHEASTERLY TO 
NORTHWESTERLY FLOW OVER MUCH OF THE ICE EDGE LATE SUNDAY INTO MONDAY 
AS THE LOW TRACKS EAST. THE OVERALL ICE EDGE IS EXPECTED TO RETREAT 
TO THE NORTH 25 TO 40 NM THROUGH MONDAY.

-COOK INLET-

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

COOK INLET ANALYSIS CONFIDENCE...HIGH

SYNOPSIS FOR COOK INLET...A LOW OVER THE NORTHERN GULF OF ALASKA 
WILL SHIFT SOUTHEAST THROUGH SATURDAY. A RIDGE OF HIGH PRESSURE WILL 
PASS OVER SOUTHCENTRAL ALASKA SATURDAY... FOLLOWED BY A SERIES OF 
LOWS LATE SATURDAY THROUGH MONDAY.
 
THE MAIN ICE EDGE LIES FROM THE COAST FROM 60.9N 150.7W TO 60.7N 
151.6W TO 60.9N 151.5W TO 61.2N 150.2W TO 61.2N 150.9W. THE ICE EDGE 
IS OPEN WATER.

FORECAST FOR COOK INLET THROUGH MONDAY...NORTHERLY WINDS ARE 
EXPECTED TO PERSIST OVER THE INLET THROUGH MONDAY WITH DAYTIME HIGHS 
RANGING FROM THE MID TO LOW 40S AND OVERNIGHT LOWS NEAR THE FREEZING 
POINT. THE ABOVE AVERAGE TEMPERATURES ARE EXPECTED TO CONTINUE 
MELTING OUT THE REMAINING SEA ICE IN THE INLET THROUGH MONDAY. 

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

$$



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