Ice Forecast
Issued by NWS Anchorage, AK

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000
FZAK80 PAFC 262246
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
0245 PM AKDT FRIDAY 26 AUGUST 2016

FORECAST VALID...WEDNESDAY 31 AUGUST 2016

ANALYSIS CONFIDENCE...HIGH TO MODERATE

SYNOPSIS...A LARGE STRONG LOW WILL MOVE OVER THE EAST SIBERIAN SEA
SATURDAY...WITH AN ASSOCIATED FRONT PASSING OVER THE CHUKCHI SEA
SATURDAY THROUGH EARLY SUNDAY. HIGH PRESSURE WILL BUILD OVER THE
CHUKCHI SEA AND BEAUFORT SEA LATE SUNDAY AND IS EXPECTED TO
PERSIST THROUGH WEDNESDAY.

-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-

THE MAIN ICE EDGE EXTENDS FROM 73.7N 135W TO 73.1N 139.9W TO 73.8N
157.7W TO 73.3N 160.1W TO 72.4N 156.7W TO 70.9N 161.2W TO 71.6N
164.6W TO 72.5N 164.1W TO 72.6N 167.3W TO 71.5N 171.4W AND CONTINUES
IN RUSSIAN WATERS. THE ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH WEDNESDAY FOR THE CHUKCHI SEA...SOUTHERLY TO
SOUTHWESTERLY WINDS ARE EXPECTED TO PERSIST OVER MUCH OF THE
REMAINING OFFSHORE SEA ICE AREAS THROUGH EARLY SUNDAY. WINDS WILL
THEN BECOME NORTHWESTERLY SUNDAY AFTERNOON... WITH NORTHERLY TO
EASTERLY WINDS EXPECTED MONDAY THROUGH TUESDAY... AND LIGHTER WINDS
BY WEDNESDAY.

THE OFFSHORE DETERIORATING SEA ICE PACK WILL LIKELY CONTINUE TO
SHIFT TO THE NORTH NORTHEAST 10 TO 25NM THROUGH EARLY SUNDAY OWING
TO THE WIND FORCING. AS WINDS BECOME NORTHERLY TO EASTERLY EARLY
NEXT WEEK THE OFFSHORE ICE PACK WILL SLOWLY SHIFT BACK TO THE WEST
SOUTHWEST. NEAR SHORE NAVIGATIONAL WATERS ARE EXPECTED TO REMAIN SEA
ICE FREE THROUGH WEDNESDAY.

FORECAST THROUGH WEDNESDAY FOR THE BEAUFORT SEA...NEAR THE ICE EDGE
WESTERLY TO SOUTHERLY WINDS ARE EXPECTED TO PERSIST THROUGH SUNDAY
WITH NORTHERLY TO EASTERLY WINDS MONDAY THROUGH TUESDAY... AND
SOUTHEASTERLY WINDS EARLY WEDNESDAY. THE MAIN OFFSHORE SEA ICE PACK
WILL SHIFT TO THE NORTHEAST THROUGH MONDAY... THEN SLOWLY SHIFT TO
THE WEST SOUTHWEST TUESDAY THROUGH WEDNESDAY.

NEAR SHORE NAVIGATIONAL WATERS ARE EXPECTED TO REMAIN SEA ICE FREE
THROUGH WEDNESDAY.

$$



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