FZAK80 PAFC 222010
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS 
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA 
230 PM AKDT MONDAY 22 SEPTEMBER 2014 

FORECAST VALID...SATURDAY 27 SEPTEMBER 2014

ANALYSIS CONFIDENCE...MODERATE

SYNOPSIS...AN AREA OF LOW PRESSURE NEAR POINT BARROW WILL SLOWLY 
DRIFT NORTHEASTWARD TOWARD BANKS ISLAND WHILE SLOWLY WEAKENING 
THROUGH FRIDAY AFTERNOON BEFORE DISSIPATING. A SECOND AREA OF LOW 
PRESSURE WILL MOVE OVER THE CHUKCHI SEA LATE TUESDAY AND MERGE WITH 
THE AFOREMENTIONED LOW LATE WEDNESDAY. HIGH PRESSURE WILL BUILD 
ACROSS THE CHUKCHI SEA LATE WEDNESDAY AND SPREAD EASTWARD OVER THE 
BEAUFORT SEA BY FRIDAY.
 
-ARCTIC OCEAN-

ICE COVERED.

-CHUKCHI SEA-

THE MAIN ICE EDGE LIES FROM A POINT ROUGHLY 150 NM NORTH OF BARROW 
TO 75.2N 162.0W TO 76.4N 159.0W TO 75.8N 170.5W TO 74.6N 177.4W TO 
72.6N 178.1E AND CONTINUES TO THE WEST IN THE RUSSIAN ARCTIC. THE 
ICE EDGE IS MAINLY OPEN WATER...WITH AREAS OF NEW ICE WEST OF 170W. 

FORECAST THROUGH SATURDAY FOR THE CHUKCHI SEA...MODERATE NORTH TO 
NORTHWESTERLY WINDS WILL BECOME LIGHT AND SHIT TO THE WEST TUESDAY 
MORNING. THE WESTERLY WINDS WILL BECOME MODERATE ON WEDNESDAY AS A 
LOW PUSHES ACROSS THE NORTHERN CHUKCHI SEA. WINDS WILL BECOME LIGHT 
FROM THE NORTHWEST EARLY THURSDAY...WITH LIGHT NORTHERLY WINDS 
CONTINUING IN THE WAKE OF THE LOW THROUGH SATURDAY. NEW ICE IS 
EXPECTED TO DEVELOP ALONG THE ICE EDGE WEST OF 170W. THE REMAINDER 
OF THE CHUKCHI SEA ICE EDGE IS EXPECTED TO SHIFT UP TO 10 NM TO THE 
SOUTH.

-BEAUFORT SEA-

THE MAIN ICE EDGE LIES FROM THE SOUTHWEST COAST OF BANKS ISLAND TO 
71.6M 132.2W TO 71.4N 138.1W TO 72.9N 146.2W TO 73.2N 146.5W TO 
73.5N 150.0W TO 73.3N 150.5W TO A POINT ROUGHLY 150 NM NORTH OF 
BARROW. THE ICE EDGE CONSISTS OF MAINLY OPEN WATER. 
 
 
FORECAST THROUGH SATURDAY FOR THE BEAUFORT SEA...LIGHT NORTHEASTERLY 
WINDS WILL BECOME MODERATE FROM THE NORTHEAST ON TUESDAY. THE 
MODERATE WINDS WILL SHIFT TO THE SOUTH AND SOUTHWEST ON WEDNESDAY AS 
A LOW PUSHES ACROSS THE BEAUFORT SEA. WINDS WILL SLOWLY BEGIN TO 
DIMINISH AS THEY SWITCH TO THE NORTHWEST ON THURSDAY AS HIGH 
PRESSURE SETTLES INTO THE REGION. THE OVERALL ICE EDGE IS EXPECT TO 
SHIFT UP TO 10 NM TO THE SOUTH WITH NEW ICE BEGINNING TO DEVELOP 
ALONG THE ICE EDGE.
 



National Weather Service Anchorage Forecast Office: http://pafc.arh.noaa.gov