009  
FZAK80 PAFC 062339  
ICEAFC  
 
SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS  
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA  
330 PM AKDT MONDAY 6 APRIL 2020  
 
FORECAST VALID...SATURDAY 11 APRIL 2020  
 
ANALYSIS CONFIDENCE...HIGH  
 
SYNOPSIS...A LOW WILL MOVE NORTHWARD THROUGH THE WESTERN BERING SEA  
THROUGH SATURDAY, AS HIGH PRESSURE SLOWLY MOVES EASTWARD ACROSS THE  
SOUTHERN BERING SEA.  
 
-BEAUFORT SEA-  
-CHUKCHI SEA-  
-BERING SEA-  
PKZ200-NORTON SOUND-  
PKZ215-KOTZEBUE SOUND-  
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-  
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-  
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-  
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-  
 
ICE COVERED.  
 
-BERING SEA-  
PKZ160-BRISTOL BAY-  
PKZ180-KUSKOKWIM DELTA AND ETOLIN STRAIT-  
PKZ181-NORTH AND WEST OF NUNIVAK ISLAND-  
PKZ185-SAINT MATTHEW ISLAND-  
PKZ210-DALL POINT TO WALES-  
 
THE MAIN SEA ICE EDGE EXTENDS FROM NEAR 57.3N 158.2W TO 58.5N 161.3W  
TO 57.7N 162.7W TO 59.4N 165.9W TO 60.9N 170.7W TO 62.8N 177.7W AND  
CONTINUES INTO RUSSIAN WATERS. THE ICE EDGE IS MAINLY OPEN WATER FOR  
APPROXIMATELY 10 NM, THEN GENERALLY HIGH CONCENTRATION PACK ICE.  
 
FORECAST FOR THE BERING SEA (DAYS 1 THROUGH 5)...WINDS WILL  
GENERALLY BE OUT OF THE NORTH AND NORTHWEST ACROSS THE BERING SEA  
THROUGH TUESDAY. WINDS THEN SHIFT TO EASTERLY THEN SOUTHERLY THROUGH  
SATURDAY. NEW SEA ICE WILL GROW WHILE THE WINDS ARE NORTHERLY AND  
COLD AIR IS MOVING INTO THE REGION.  
 
ONCE WINDS BECOME SOUTHERLY, SEA ICE WILL AGAIN RETREAT NORTHWARD  
WITH SOME MELTING NEAR THE ICE EDGE. POLYNYAS ON THE NORTH SIDE OF  
COASTLINES WILL FILL IN EARLY THIS WEEK AND NEW ONES WILL FORM OFF  
SOUTH-FACING COASTLINES, BUT ONCE THE WINDS SHIFT THOSE POLYNYAS OFF  
THE SOUTH-FACING COASTLINES WILL FILL IN AND NEW ONES WILL FORM OFF  
NORTH-FACING COASTLINES ONCE AGAIN. OVERALL, EXPECT SEA ICE TO  
RETREAT NORTHEASTWARD 20 TO 40NM THROUGH SATURDAY.  
 
-COOK INLET-  
PKZ139-COOK INLET KALGIN ISLAND TO PT. BEDE-  
PKZ140-COOK INLET NORTH OF KALGIN ISLAND-  
 
ANALYSIS CONFIDENCE...HIGH  
 
SYNOPSIS...A LOW WILL MOVE EASTWARD ACROSS THE GULF OF ALASKA  
THROUGH WEDNESDAY, THEN HIGH PRESSURE WILL BUILD IN OVER THE COOK  
INLET REGION THURSDAY THROUGH SATURDAY.  
 
THE MAIN ICE EDGE IN COOK INLET EXTENDS FROM NEAR THE EAST FORELAND  
TO 60.5N 151.5W TO 60.5N 151.8W TO 60.7N 152W. THE ICE EDGE IS  
MAINLY OPEN WATER.  
 
FORECAST FOR COOK INLET (DAYS 1 THROUGH 5)...SOUTHERLY WINDS WILL  
PERSIST THROUGH TUESDAY, THEN BECOME GENERALLY LIGHT AND VARIABLE IN  
NORTHERN COOK INLET AND WESTERLY IN THE SOUTHERN PART OF THE INLET  
THROUGH THURSDAY. NORTHERLY WINDS WILL DEVELOP FRIDAY AND SATURDAY  
THROUGHOUT THE COOK INLET REGION. WITH HIGH TEMPERATURES GRADUALLY  
WARMING EACH DAY THIS WEEK AND LOWS ONLY DROPPING INTO THE 20S AT  
NIGHT, SEA ICE IS EXPECTED TO CONTINUE MELTING THROUGH SATURDAY.  
 

 
SCHRECK  
 
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