816  
FZAK80 PAFC 222244  
ICEAFC  
 
SEA ICE FORECAST FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS  
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA  
244 PM AKDT FRIDAY 22 OCTOBER 2021  
 
FORECAST VALID...WEDNESDAY 27 OCTOBER 2021  
 
ANALYSIS CONFIDENCE...HIGH TO MODERATE.  
 
SYNOPSIS...LOW PRESSURE OVER THE SOUTHERN CHUKCHI SEA WILL GRADUALLY  
WEAKEN AS IT MOVES NORTHWEST INTO THE RUSSIAN ARCTIC SATURDAY.  
ANOTHER LOW WILL FORM OVER THE SOUTHERN CHUKCHI SEA AREA SUNDAY AND  
MEANDER THERE THROUGH WEDNESDAY.  
 
-BEAUFORT SEA-  
-CHUKCHI SEA-  
 
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-  
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-  
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-  
 
ICE COVERED.  
 
-BEAUFORT SEA-  
-CHUKCHI SEA-  
 
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-  
 
THE MAIN ICE EDGE EXTENDS FROM NEAR CAPE LISBURNE TO 69 11'N 164  
26'W TO 70 39'N 162 38'W TO 71 27'N 156 19'W TO 71 4'N 152 35'W TO  
72 9'N 153 19'W TO 72 18'N 158 02'W TO 71 04'N 160 30'W TO 70 50'N  
164 10'W TO 72 39'N 169 49'W TO 72 22'N 175 55'W AND CONTINUES IN  
RUSSIAN WATERS. THE ICE EDGE IS MAINLY OPEN WATER. THERE IS ALSO NEW  
SEA ICE WITHIN PROTECTED BAYS AND BEHIND BARRIER ISLANDS ALONG THE  
ALASKA COASTLINE FROM APPROXIMATELY WALES NORTHWARD.  
 
FORECAST FOR THE BEAUFORT SEA (DAYS 1 THROUGH 5)...WINDS WILL  
GENERALLY BE NORTHEASTERLY TO NORTHERLY OVER THE WESTERN BEAUFORT  
SEA THROUGH WEDNESDAY. THE EXISTING ICE PACK WILL LIKELY DRIFT 20 TO  
40 NM SOUTH-SOUTHWESTWARD THROUGH WEDNESDAY, AND ADDITIONAL NEW SEA  
ICE GROWTH IS LIKELY AS WELL.  
 
FORECAST FOR THE CHUKCHI SEA (DAYS 1 THROUGH 5)...GENERALLY  
NORTHERLY TO NORTHEASTERLY WINDS WILL PERSIST THROUGH WEDNESDAY.  
MUCH COLDER AIR WILL BE MOVING INTO THE CHUKCHI SEA REGION THE  
MIDDLE TO END OF NEXT WEEK, SO ADDITIONAL NEW SEA ICE GROWTH IS  
LIKELY ESPECIALLY DURING THAT TIME. OVERALL, EXPECT THE ICE EDGE TO  
MOVE 25 TO 45 NM TO THE SOUTH-SOUTHWEST THROUGH WEDNESDAY.  
 
-BERING SEA-  
 
PKZ200-NORTON SOUND-  
PKZ210-DALL POINT TO WALES-  
 
THERE IS SEA ICE WITHIN PROTECTED BAYS OF THE NORTHERN BERING SEA  
SUCH AS NORTON BAY, GOLOVIN BAY, AND SAFETY SOUND.  
 
FORECAST FOR THE BERING SEA (DAYS 1 THROUGH 5)...WINDS WILL SHIFT  
FROM NORTHEASTERLY TO WESTERLY BY WEDNESDAY. ADDITIONAL NEW SEA ICE  
GROWTH IS EXPECTED WITHIN THE PROTECTED BAYS OF NORTHERN NORTON  
SOUND. AS COLDER AIR MOVES IN TOWARD THE END OF NEXT WEEK, NEW SEA  
ICE FORMATION FARTHER SOUTH IS LIKELY ESPECIALLY ALONG THE YUKON  
RIVER DELTA AND ALONG THE SOUTHERN EDGE OF NORTON SOUND.  
 

 
SCHRECK  
 
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