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FZAK80 PAFC 242157
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS 
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
200 PM AKDT FRIDAY 24 APRIL 2015 

FORECAST VALID...WEDNESDAY 29 APRIL 2015

ANALYSIS CONFIDENCE...MODERATE TO HIGH
                      
SYNOPSIS...A LOW OVER BRISTOL BAY WILL SHIFT OVER THE GULF OF ALASKA 
SATURDAY. A RIDGE OF HIGH PRESSURE WILL MOVE OVER THE WESTERN BERING 
SEA LATE FRIDAY AND SHIFT EAST ACROSS THE BERING SEA THROUGH THE 
WEEKEND. ANOTHER WEAK LOW WILL MOVE OVER THE WESTERN BERING SEA 
SUNDAY... SLOWLY SHIFTING OVER THE CENTRAL BERING SEA THROUGH 
WEDNESDAY.

-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 A POINT NEAR THE KUSKOKWIM DELTA TO 
59.6N 164.2W TO 58.4N 166.8W TO 57.6N 170.1W TO 57.6N 171.1W TO 
60.7N 179.4W TO 60.8N 178.7E AND CONTINUES ALONG THE RUSSIAN COAST. 
THE ICE EDGE IS OPEN WATER.

FORECAST THROUGH WEDNESDAY FOR THE BERING SEA...NORTHERLY TO 
NORTHWESTERLY FLOW IS EXPECTED OVER MUCH OF THE ICE EDGE THROUGH 
SATURDAY... WITH WIND FLOW BECOMING SOUTHEASTERLY TO EASTERLY SUNDAY 
THROUGH WEDNESDAY. THE ICE EDGE IS EXPECTED TO SPREAD APART TO THE 
SOUTHEAST THROUGH SATURDAY. AS WINDS BECOME SOUTHEASTERLY TO 
EASTERLY ON SUNDAY MUCH OF THE ICE PACK WILL COMPACT ALONG THE 
SOUTHERN EDGE AND THE ICE PACK WILL RETREAT TO THE NORTHWEST. 
OVERALL THE ICE EDGE IS EXPECTED TO SEE A NET RETREAT TO THE 
NORTHWEST 5 TO 15 NM THROUGH WEDNESDAY.
 
$$



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