208  
FZAK80 PAFC 172356  
ICEAFC  
 
SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS  
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA  
255 PM AKST FRIDAY 17 NOVEMBER 2017  
 
FORECAST VALID THROUGH...WEDNESDAY 22 NOVEMBER 2017  
 
ANALYSIS CONFIDENCE...MODERATE TO HIGH  
 
SYNOPSIS...HIGH PRESSURE WILL REMAIN OVER THE BEAUFORT SEA THROUGH  
SATURDAY...THEN A LOW WILL MOVE WESTWARD ACROSS THE BEAUFORT SEA AS  
A SERIES OF LOWS MOVE NORTHWARD THROUGH THE BERING SEA THROUGH  
WEDNESDAY.  
 
-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 71.5N 152.9W TO 72N 152W TO 72.3N 156W AND CONTINUES WESTWARD  
INTO THE CHUKCHI SEA. THE ICE EDGE IS MAINLY OPEN WATER.  
 
FORECAST THROUGH WEDNESDAY FOR THE BEAUFORT SEA...GENERALLY EASTERLY  
WINDS WILL PERSIST THROUGH WEDNESDAY. SEA ICE WILL CONTINUE TO FILL  
IN THE BEAUFORT SEA THROUGH WEDNESDAY.  
 
-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 50  
NM NORTH OF POINT BARROW TO 75N 169.7W TO 73.5N 176.3W 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 WEDNESDAY FOR THE CHUKCHI SEA...WINDS WILL  
GENERALLY BE MODERATE EASTERLY ALONG AND NEAR THE ICE EDGE THROUGH  
WEDNESDAY. THE MAIN ICE EDGE IS EXPECTED TO RETREAT 15 TO 30 NM  
NORTHWESTWARD THROUGH WEDNESDAY. SEA ICE ALONG THE CHUKCHI SEA COAST  
AND WITHIN KOTZEBUE SOUND MAY EXPAND WESTWARD UP TO 20NM THROUGH  
WEDNESDAY.  
 
-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 WEDNESDAY FOR THE BERING SEA...VARIABLE WINDS CAN  
BE EXPECTED THROUGH WEDNESDAY AS A SERIES OF LOWS MOVE THROUGH THE  
BERING SEA. VERY LITTLE NEW ICE GROWTH IS EXPECTED THROUGH  
WEDNESDAY.  
 
-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 WEDNESDAY FOR COOK INLET...COLDER TEMPERATURES ARE  
EXPECTED TO PERSIST THROUGH WEDNESDAY. THEREFORE SEA ICE IS EXPECTED  
TO CONTINUE TO FORM AND THICKEN THROUGH WEDNESDAY.  
 
PLEASE NOTE...COOK INLET SEA ICE CHANGES SIGNIFICANTLY WITH THE  
TIDES.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab AK Page Main Text Page