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FZAK80 PAFC 222354
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA 
253 PM AKST WEDNESDAY 22 NOVEMBER 2017 

FORECAST VALID THROUGH...MONDAY 27 NOVEMBER 2017

ANALYSIS CONFIDENCE...HIGH
                      
SYNOPSIS...A STRONG LOW OVER THE EASTERN CHUKCHI WILL MOVE INLAND ON 
FRIDAY AND SLOWLY DISSIPATE. A MODERATE STRENGTH FRONT WILL MOVE 
INTO THE CHUKCHI ON FRIDAY. ANOTHER LOW WILL MOVE INTO THE BERING 
SEA ON SATURDAY AND MOVE INTO THE GULF ON MONDAY.

-ARCTIC OCEAN-
-BEAUFORT SEA-

PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-

ICE COVERED.

-CHUKCHI SEA-
PKZ215-KOTZEBUE SOUND-
PKZ220-WALES TO CAPE THOMPSON-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-

THE MAIN ICE EDGE IN THE CHUKCHI SEA EXTENDS FROM APPROXIMATELY 55 
NM NORTH OF POINT BARROW TO 74.6N 170.5W TO 73.1N 177.4W AND 
CONTINUES IN RUSSIAN WATERS. THERE IS ALSO SEA ICE ALONG THE WEST 
COAST OF ALASKA FROM 69.1N 163.7W TO POINT BARROW AS WELL AS WITHIN 
KOTZEBUE SOUND.

FORECAST THROUGH MONDAY FOR THE CHUKCHI SEA...WINDS WILL GENERALLY 
BE NORTHWESTERLY THROUGH FRIDAY WHILE SLOWLY WEAKENING THEN SHIFT TO 
SOUTHEAST AT MODERATE STRENGTH THROUGH MONDAY. THE MAIN ICE EDGE IS 
EXPECTED TO RETREAT 15 TO 30 NM NORTHWESTWARD THROUGH MONDAY FROM 
WRANGELL ISLAND NORTH. SOUTH OF WRANGELL ISLAND...EXPECT THE ICE 
EDGE TO EXPAND 10 TO 20 NM. SEA ICE ALONG THE CHUKCHI SEA COAST AND 
WITHIN KOTZEBUE SOUND MAY EXPAND WESTWARD UP TO 10NM THROUGH 
MONDAY.

-BERING SEA-
PKZ180-KUSKOKWIM DELTA AND ETOLIN STRAIT-
PKZ181-NORTH AND WEST OF NUNIVAK ISLAND-
PKZ200-NORTON SOUND-
PKZ210-DALL POINT TO WALES-

NEW AND YOUNG SEA ICE HAS BEEN OBSERVED WITHIN THE SHALLOW AND 
PROTECTED AREAS FROM THE BERING STRAIT SOUTH TO BRISTOL BAY.

FORECAST THROUGH MONDAY FOR THE BERING SEA...VARIABLE WINDS CAN BE 
EXPECTED THROUGH MONDAY AS A SERIES OF LOWS MOVE THROUGH THE BERING 
SEA. VERY LITTLE NEW ICE GROWTH IS EXPECTED THROUGH MONDAY.

-COOK INLET-
PKZ130-WEST OF BARREN ISLANDS INCLUDING KAMISHAK BAY-
PKZ139-COOK INLET KALGIN ISLAND TO PT. BEDE-
PKZ140-COOK INLET NORTH OF KALGIN ISLAND-

ANALYSIS CONFIDENCE...MODERATE TO HIGH

NEW AND YOUNG SEA ICE HAS BEEN OBSERVED NORTH OF A LINE FROM THE 
SUSITNA RIVER DELTA TO POINT POSSESSION...AS WELL AS WITHIN 
PROTECTED AREAS ON THE WEST SIDE OF COOK INLET TO KAMISHAK 
BAY.

FORECAST THROUGH MONDAY FOR COOK INLET...COLDER TEMPERATURES ARE 
EXPECTED TO PERSIST THROUGH MONDAY. THEREFORE SEA ICE IS EXPECTED TO 
CONTINUE TO FORM AND THICKEN THROUGH MONDAY.

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

$$


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Page Modified: 03 Feb 2008 18:00 UTC
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