636  
FZAK80 PAFC 172135  
ICEAFC  
 
SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS  
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA  
235 PM AKDT WEDNESDAY 17 JULY 2019  
 
FORECAST VALID...MONDAY 22 JULY 2019  
 
ANALYSIS CONFIDENCE...MODERATE TO HIGH  
 
SYNOPSIS...A WEAK LOW PRESSURE WILL SIT OVER THE CHUKCHI, WITH A  
FRONT DRAPED OVER THE AREA. HIGH PRESSURE WILL BUILD FROM THE  
SOUTHERN CHUKCHI ON SATURDAY, FOLLOWED BY A WARM FRONT ON MONDAY.  
 
-CHUKCHI SEA-  
 
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-  
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-  
 
THE MAIN ICE EDGE IN THE CHUKCHI SEA EXTENDS FROM NEAR UTQIAGVIK TO  
71.3N TO 159.3W TO 72.7N 161W TO 69.9N 178.8W TO 76N 172W. THE ICE  
EDGE IS MAINLY OPEN WATER.  
 
FORECAST FOR THE CHUKCHI SEA (DAYS 1 THROUGH 5)...WINDS WILL REMAIN  
GENERALLY LIGHT FROM THE WEST, EXCEPT FOR POSSIBLE LOCALLY STRONGER  
VARIABLE WINDS AROUND A COMPACT LOW NEAR THE NAVIGATIONAL WATERS  
ALONG THE ALASKAN COAST. EXPECT THE ICE EDGE TO MOVE SOUTHEASTWARD  
UP TO 10 NM WHILE CONTINUING TO MELT.  
 
-BEAUFORT SEA-  
 
PKZ235-POINT FRANKLIN TO CAPE HALKETT-  
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-  
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-  
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-  
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-  
 
THE MAIN ICE EDGE IN THE BEAUFORT SEA EXTENDS FROM 69.3N 138.7W TO  
70N 135W AND CONTINUES IN CANADIAN WATERS. THE ICE EDGE IS MAINLY  
OPEN WATER.  
 
FORECAST FOR THE BEAUFORT SEA (DAYS 1 THROUGH 5)...WINDS WILL REMAIN  
LIGHT AND VARIABLE UNTIL STRONGER EASTERLIES COME THROUGH ON  
THURSDAY, FOLLOWED BY WESTERLY WINDS ON FRIDAY. OVERALL, EXPECT THE  
ICE EDGE TO DRIFT EASTWARD UP TO 10 NM WITH CONTINUED MELTING.  
 

 
LAWSON  
 
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