092  
FZAK80 PAFC 062319  
ICEAFC  
 
SEA ICE FORECAST FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS  
NATIONAL WEATHER SERVICE - ALASKA SEA ICE PROGRAM  
319 PM AKDT MONDAY 6 OCTOBER 2025  
 
FORECAST VALID...SATURDAY 11 OCTOBER 2025  
 
ANALYSIS CONFIDENCE...MODERATE TO HIGH.  
 
SYNOPSIS...A BERING SEA LOW WILL MOVE NORTH INTO THE CHUKCHI SEA ON  
WEDNESDAY AND THEN INTO THE BEAUFORT SEA ON THURSDAY. THE LOW  
WEAKENS AS IT MOVES EAST TO THE CANADIAN ARCHIPELAGO ON FRIDAY.  
ANOTHER LOW DEVELOPS NEAR THE WESTERN ALEUTIANS ON THURSDAY AND  
LINGERS THERE THROUGH SATURDAY.  
 
-BEAUFORT SEA-  
 
PKZ505-CENTRAL US ARCTIC OFFSHORE-  
PKZ510-EASTERN US ARCTIC OFFSHORE-  
PKZ813-POINT FRANKLIN TO CAPE HALKETT OUT TO 15 NM-  
PKZ814-CAPE HALKETT TO FLAXMAN ISLAND OUT TO 15 NM-  
PKZ815-FLAXMAN ISLAND TO DEMARCATION POINT OUT TO 15 NM-  
PKZ859-POINT FRANKLIN TO CAPE HALKETT FROM 45 TO 140 NM-  
PKZ860-CAPE HALKETT TO FLAXMAN ISLAND FROM 45 TO 60 NM-  
PKZ861-FLAXMAN ISLAND TO DEMARCATION POINT FROM 20 TO 45 NM-  
 
THE MAIN ICE EDGE IN THE BEAUFORT SEA EXTENDS FROM 71 59’N 154 54’W  
TO 71 12’N 150 36’W TO 71 27’N 148 3’W TO 70 38’N 147 9’W TO 70 33’N  
140 52’W TO 70 3’N 138 23’W AND CONTINUES EAST INTO CANADIAN WATERS.  
THE ICE EDGE IS OPEN WATER.  
 
FROM LAND-BASED POINTS IN ALASKA, THE MAIN ICE EDGE IN THE BEAUFORT  
SEA EXTENDS FROM 50 NM NORTH OF IKIAK TO 40 NM NORTHWEST OF OLIKTOK  
POINT TO 65 NM NORTHEAST OF OLIKTOK POINT TO 22 NM NORTH OF FLAXMAN  
ISLAND TO 50 NM NORTH OF DEMARCATION POINT TO 60 NM NORTHEAST OF  
DEMARCATION POINT AND CONTINUES EAST INTO CANADIAN WATERS. THE ICE  
EDGE IS OPEN WATER.  
 
FORECAST FOR THE BEAUFORT SEA (DAYS 1 THROUGH 5)...FORECAST  
CONFIDENCE IS HIGH. NEW ICE HAS DEVELOPED ALONG PROTECTED AREAS OF  
THE COAST, HOWEVER WARM AIR ADVECTION DUE TO EASTERLY WINDS HAS  
STARTED TO MELT THE NEW ICE. WINDS SHIFT SOUTHEASTERLY ON WEDNESDAY  
AND THEN SOUTHWESTERLY ON THURSDAY WHICH WILL MOVE THE MAIN ICE PACK  
GENERALLY TO THE NORTH ABOUT 10-15 NM PER DAY. THE WARM AIR MASS  
WILL INHIBIT NEW ICE GROWTH IN THE SOUTHERN BERING SEA THROUGH  
THURSDAY. ON FRIDAY AND SATURDAY, WINDS SHIFT WESTERLY AND WILL PUSH  
THE ICE PACK TO THE EAST 10-15 NM PER DAY.  
 
-CHUKCHI SEA-  
 
PKZ500-WESTERN US ARCTIC OFFSHORE-  
PKZ505-CENTRAL US ARCTIC OFFSHORE-  
PKZ812-CAPE BEAUFORT TO POINT FRANKLIN OUT TO 15 NM-  
PKZ813-POINT FRANKLIN TO CAPE HALKETT OUT TO 15 NM-  
PKZ858-CAPE BEAUFORT TO POINT FRANKLIN FROM 15 TO 85 NM-  
PKZ859-POINT FRANKLIN TO CAPE HALKETT FROM 15 TO 75 NM-  
 
THE MAIN ICE EDGE IN THE CHUKCHI SEA EXTENDS FROM 71 59’N 154 54’W  
TO 72 12’N 162 21’W TO 73 7’N 168 12’W AND CONTINUES SOUTHWEST INTO  
RUSSIAN WATERS. THE ICE EDGE IS OPEN WATER.  
 
FROM LAND-BASED POINTS IN ALASKA, THE MAIN ICE EDGE IN THE CHUKCHI  
SEA EXTENDS FROM 50 NM NORTH OF IKIAK TO 110 NM NORTH OF ICY CAPE TO  
250 NM NORTH OF CAPE LISBURNE AND CONTINUES SOUTHWEST INTO RUSSIAN  
WATERS. THE ICE EDGE IS OPEN WATER.  
 
FORECAST FOR THE CHUKCHI SEA (DAYS 1 THROUGH 5)...FORECAST  
CONFIDENCE IS HIGH. NEW ICE HAS DEVELOPED ALONG PROTECTED AREAS OF  
THE COAST FROM POINT LAY TO NEAR PEARD BAY, HOWEVER EASTERLY WINDS  
DEVELOP TUESDAY AND WILL LIKELY MELT THIS NEW ICE. A LOW WILL TRACK  
NORTH ACROSS THE CHUKCHI SEA MID-WEEK WHICH WILL BRING VARIABLE  
WINDS. OVER THE MAIN ICE PACK, EASTERLY WINDS WILL BECOME  
NORTHEASTERLY ON WEDNESDAY, NORTHERLY ON THURSDAY, AND THEN WESTERLY  
ON FRIDAY AND SATURDAY. EXPECT THE ICE PACK TO MOVE IN THE DIRECTION  
OF THE WINDS ABOUT 10-15 NM PER DAY.  
 

 
FENRICH  
 
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