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FZAK80 PAFC 210008
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA 
308 PM AKST MONDAY 20 NOVEMBER 2017 

FORECAST VALID THROUGH...WEDNESDAY 22 NOVEMBER 2017

ANALYSIS CONFIDENCE...MODERATE TO HIGH
                      
SYNOPSIS...A STRONG LOW WILL MOVE INTO THE CHUKCHI THROUGH 
SATURDAY...SLOWLY DISSIPATING. ANOTHER LOW WILL MOVE INTO THE BERING 
SEA ON WEDNESDAY AND MOVE INLAND OVER THE SOUTHWEST MAINLAND ON 
THURSDAY.

-ARCTIC OCEAN-
-BEAUFORT SEA-

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

ICE COVERED.

-BEAUFORT SEA-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE- 

THE MAIN ICE EDGE IN THE BEAUFORT SEA EXTENDS FROM NEAR POINT BARROW 
TO 72.3N 154.3W TO 72.3N 156.6W CONTINUES WESTWARD INTO THE CHUKCHI 
SEA. THE ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH SATURDAY FOR THE BEAUFORT SEA...GENERALLY EASTERLY 
WINDS WILL PERSIST THROUGH THURSDAY. SEA ICE WILL CONTINUE TO FILL 
IN THE BEAUFORT SEA THROUGH SATURDAY AND DRIFT TO THE NORTHWEST 10 
TO 20 NM DURING THAT TIME.

-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 73.9N 162.8W TO 74.6N 170.1W TO 75.4N 
169.7W TO 74N 172.6W TO 73.6N 176.6W 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 SATURDAY FOR THE CHUKCHI SEA...WINDS WILL GENERALLY 
BE MODERATE EASTERLY ALONG AND NEAR THE ICE EDGE THROUGH WEDNESDAY 
THEN SHIFT TO THE NORTH AND NORTHWEST THROUGH SATURDAY. THE MAIN ICE 
EDGE IS EXPECTED TO RETREAT 15 TO 30 NM NORTHWESTWARD THROUGH 
SATURDAY. SEA ICE ALONG THE CHUKCHI SEA COAST AND WITHIN KOTZEBUE 
SOUND MAY EXPAND WESTWARD UP TO 10NM THROUGH SATURDAY.

-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 THE KUSKOKWIM RIVER 
DELTA. 

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

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

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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