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FZAK80 PAFC 202308
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS 
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
310 PM AKDT WEDNESDAY 20 MAY 2015 

FORECAST VALID...MONDAY 25 MAY 2015

ANALYSIS CONFIDENCE...HIGH TO MODERATE
                      
SYNOPSIS...A LOW IN THE CENTRAL BERING SEA WILL MOVE NORTHWARD AND 
WEAKEN OVER EASTERN SIBERIA ON THURSDAY. A STRONG LOW WILL BRING 
SOME WARMER AIR NORTHWARD AS IT MOVES INTO THE WESTERN BERING SEA ON 
SATURDAY...THEN IT WILL WEAKEN SUNDAY INTO 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-
PKZ185-SAINT MATTHEW ISLAND WATERS-

THE MAIN ICE EDGE LIES FROM THE ALASKA COAST NEAR NEWTOK TO THE 
NORTH ALONG THE ALASKA WEST COAST TO A POINT NEAR 63.1N 165.5W TO 
64.1N 166.7W TO 63.0N 167.5W TO 64.0N 168.3W TO 62.9N 169.8W TO 
64.1N 170.4W TO 65.2N 169.8W TO THE RUSSIAN COAST NEAR 64.2N 173.1W. 
THE ICE EDGE IS MAINLY OPEN WATER.

ISOLATED ICE BELTS ALSO REMAIN TO THE NORTH AND WEST OF SAINT 
MATTHEW ISLAND AND OFFSHORE BETWEEN NUNIVAK ISLAND AND SAINT 
LAWRENCE ISLAND. 

FORECAST THROUGH SATURDAY FOR THE BERING SEA...THERE WILL BE A 
PERIOD OF LIGHT WINDS THROUGH THURSDAY...THEN MODERATE TO STRONG 
SOUTHERLY FLOW WILL BUILD OVER MUCH OF THE EASTERN BERING SEA 
THURSDAY THROUGH MONDAY. REMAINING ISOLATED AREAS OF SEA ICE NEAR 
SAINT MATTHEW ISLAND AND OFFSHORE BETWEEN NUNIVAK ISLAND AND SAINT 
LAWRENCE ISLAND ARE EXPECTED TO DECREASE IN CONCENTRATION THROUGH 
MONDAY... LEAVING BEHIND ISOLATED ICE AREAS LESS THAN 3 TENTHS IN 
CONCENTRATION SURROUNDED BY AREAS OF OPEN WATER. SOUTHERLY TO 
EASTERLY FLOW OVER THE NORTON SOUND AND BERING STRAIT REGION IS 
EXPECTED TO SPREAD APART REMAINING SEA ICE TO THE NORTHWEST... WITH 
SEA ICE CONCENTRATIONS DECREASING AND OPEN WATER AREAS EXPANDING 
THROUGH MONDAY.
 


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