Ice Forecast
Issued by NWS Anchorage, AK

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FZAK80 PAFC 042318
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
320 PM AKDT FRIDAY 04 SEPTEMBER 2015

FORECAST VALID...WEDNESDAY 09 SEPTEMBER 2015

ANALYSIS CONFIDENCE...MODERATE TO HIGH

SYNOPSIS...HIGH PRESSURE OVER THE BEAUFORT SEA WILL MOVE EASTWARD
INTO THE CANADIAN ARCTIC BY SATURDAY. ANOTHER RIDGE OF HIGH PRESSURE
WILL MOVE FROM THE RUSSIAN ARCTIC INTO THE WESTERN CHUKCHI SEA
THROUGH SUNDAY. LOW PRESSURE WILL MOVE SOUTHWARD OVER THE BEAUFORT
SEA SUNDAY THROUGH MONDAY. HIGH PRESSURE WILL BUILD OVER THE
CHUKCHI TUESDAY AND WEDNESDAY.

-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ510-EASTERN US ARCTIC OFFSHORE-
PKZ505-CENTRAL US ARCTIC OFFSHORE-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-

ICE COVERED.

-CHUKCHI SEA-
PKZ500-WESTERN US ARCTIC OFFSHORE-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-

THE MAIN ICE EDGE LIES FROM A POINT ROUGHLY 60 NM NORTH OF POINT
BARROW TO 72.6N 159.4W TO 72.9N 160.5W TO 73.3N 160W TO 73.9N 162.6W
TO 73.5N 163.4W TO 73.3N 172.1W AND CONTINUES IN RUSSIAN WATERS. THE
ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH MONDAY FOR THE CHUKCHI SEA...EASTERLY FLOW WILL
BECOME WESTERLY SUNDAY NIGHT AND REMAIN WEST TO NORTHWEST THROUGH
WEDNESDAY. THE OVERALL ICE EDGE IS EXPECTED TO SHIFT 10 TO 20 NM TO
THE WEST THROUGH MONDAY AND THEN SOUTH ABOUT 10 TO 15 NM INTO
WEDNESDAY.

-BEAUFORT SEA-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-

THE MAIN ICE EDGE LIES FROM NEAR THE SOUTHWEST CORNER OF BANKS
ISLAND TO 71.1N 127.4W TO 71.2N 130.4W TO 70.4N 137.6W TO 71.2
145.6W TO 72N 141.2W TO 71.5N -150W TO A POINT ROUGHLY 60 NM NORTH
OF POINT BARROW. THE ICE EDGE IS MAINLY OPEN WATER. SEA ICE ALSO
REMAINS JUST BEYOND THE BARRIER ISLANDS OF THE NORTH SLOPE IN AN
ISOLATED REGION BETWEEN 144.4W AND 150.8W.

FORECAST THROUGH MONDAY FOR THE BEAUFORT SEA...EASTERLY WINDS
THROUGH SATURDAY...THAT BECOME LIGHT AGAIN SUNDAY THROUGH MONDAY.
WINDS BECOME NORTH TUESDAY BEFORE TURNING NORTHEAST WEDNESDAY. SEA
ICE REMAINING NEAR THE BARRIER ISLANDS IS EXPECTED TO SLOWLY
DECREASE IN CONCENTRATION BUT POSSIBLY SHIFT EAST 5 TO 10 NM. THE
MAIN ICE EDGE IS EXPECTED TO SHIFT TO THE WEST 10 TO 20 NM THROUGH
MONDAY THEN TURN SOUTH ABOUT 10 TO 15 NM INTO WEDNESDAY.

$$



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