Ice Forecast
Issued by NWS Anchorage, AK

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000
FZAK80 PAFC 242215
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
215 PM AKDT WEDNESDAY 24 AUGUST 2016

FORECAST VALID...MONDAY 29 AUGUST 2016

ANALYSIS CONFIDENCE...HIGH

SYNOPSIS...HIGH PRESSURE WILL REMAIN OVER THE SOUTHERN BEAUFORT SEA
THROUGH MONDAY. A TROUGH OF LOW PRESSURE WILL PASS OVER THE WESTERN
CHUKCHI SEA LATE WEDNESDAY INTO THURSDAY. ANOTHER STRONGER LOW WILL
MOVE OVER THE EAST SIBERIAN SEA SATURDAY...WITH AN ASSOCIATED FRONT
PASSING OVER THE CHUKCHI SEA SATURDAY. HIGH PRESSURE WILL BUILD BACK
OVER THE CHUKCHI SEA SUNDAY INTO MONDAY.

-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ510-EASTERN US ARCTIC OFFSHORE-
PKZ505-CENTRAL US ARCTIC OFFSHORE-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-

ICE COVERED.

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

IN THE CHUKCHI SEA...THE MAIN ICE EDGE EXTENDS FROM NEAR WAINWRIGHT
TO 70.6N 162.4W TO 72N 165.6W TO 69.9N 179.5W AND CONTINUES IN
RUSSIAN WATERS. THE ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH MONDAY FOR THE CHUKCHI SEA...SOUTHEAST WINDS WILL
BECOME SOUTHERLY TO SOUTHWESTERLY WINDS WEDNESDAY NIGHT THROUGH THE
END OF THE WEEKEND.

THE HIGH CONCENTRATION BRASH SEA ICE BOUNDARY HAS SHIFTED BACK TO
THE WEST IN RECENT DAYS...MOVING THE HIGH CONCENTRATION BRASH SEA
ICE AREA ROUGHLY 35 NM TO THE WEST NORTHWEST OF WAINWRIGHT. THE
BRASH SEA ICE JUST OFFSHORE FROM WAINWRIGHT TO BARROW WILL LIKELY
SHIFT TO THE NORTH NORTHEAST THROUGH SUNDAY OWING TO THE SOUTHERLY
TO SOUTHWESTERLY WIND FLOW. THE MAIN OFFSHORE DETERIORATING SEA ICE
PACK AS WELL AS THE SEA ICE NEAR THE NAVIGATIONAL WATERS WILL LIKELY
SHIFT 15 TO 30 NM TO THE NORTH NORTHEAST THROUGH THE END OF THE
WEEKEND. NEAR SHORE NAVIGATIONAL WATERS ARE EXPECTED TO REMAIN
IN OPEN WATER CONDITIONS THROUGH MONDAY.

IN THE BEAUFORT SEA...THE MAIN ICE EDGE EXTENDS FROM NEAR BARROW TO
73.4N 157.3W TO 73.2N 148.1W TO 71.6N 145.1W TO 71.7N 139.4W AND
CONTINUES INTO CANADIAN WATERS. THE ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH MONDAY FOR THE BEAUFORT SEA...NEAR THE ICE EDGE
SOUTHEASTERLY WINDS WILL BECOME WESTERLY TO SOUTHERLY WINDS LATE
FRIDAY THROUGH MONDAY. THE MAIN OFFSHORE SEA ICE PACK WILL SLOWLY
SHIFT TO THE NORTHEAST THROUGH MONDAY. NEAR SHORE NAVIGATIONAL
WATERS ARE EXPECTED TO REMAIN SEA ICE FREE THROUGH MONDAY.

$$



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