Ice Forecast
Issued by NWS Anchorage, AK

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634
FZAK80 PAFC 162241
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
240 PM AKDT WEDNESDAY 16 AUGUST 2017

FORECAST VALID...MONDAY 21 AUGUST 2017

ANALYSIS CONFIDENCE...HIGH TO MODERATE

SYNOPSIS...A PAIR OF LOW PRESSURE CENTERS WILL REMAIN OVER THE
CHUKCHI SEA THROUGH THURSDAY. ANOTHER LOW WILL ENTER THE BEAUFORT
SEA FROM THE SOUTHEAST WEDNESDAY NIGHT AND MOVE INTO THE HIGH ARCTIC
BY FRIDAY. THIS WILL LEAVE WEAK FLOW OVER THE CHUKCHI AND BEAUFORT
SEAS THIS WEEKEND INTO MONDAY.

-ARCTIC OCEAN-
ICE COVERED.

-BEAUFORT SEA-
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-

THE MAIN ICE EDGE IN THE BEAUFORT SEA CONTINUES FROM CANADIAN WATERS
TO 71.4N 135.0W TO 71.3N 141.4W TO 73.1N 142.9W TO 72.6N 152.5W TO
73.2N 153.7W TO 74.0N 146.7W TO 76.2N 146.0W TO 75.2N 157.7W. THE
ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH MONDAY FOR THE BEAUFORT SEA...GENERALLY LIGHT AND
VARIABLE WINDS WILL PERSIST THROUGH MONDAY...WITH THE EXCEPTION OF A
BRIEF PERIOD OF NORTHERLY WINDS ON THURSDAY. THE ICE EDGE IS
EXPECTED TO SHIFT TO THE SOUTHWEST BY UP TO 10 NM THROUGH MONDAY.

-CHUKCHI SEA-
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-

THE MAIN ICE EDGE IN THE CHUKCHI SEA EXTENDS FROM 75.2N 157.7W TO
73.9N 168.0W TO 72.8N 168.4W TO 72.9 176W AND CONTINUES IN RUSSIAN
WATERS. THE ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH MONDAY FOR THE CHUKCHI SEA...GENERALLY LIGHT AND
VARIABLE FLOW WILL PERSIST OVER THE ICE EDGE THROUGH MONDAY...WITH
THE EXCEPTION OF THE FAR WESTERN CHUKCHI SEA WHERE MODERATE WEST TO
NORTHWEST WINDS WILL PERSIST THROUGH FRIDAY. THE ICE EDGE IS
EXPECTED TO RETREAT TO THE NORTH BY BY UP TO 10 NM THROUGH
MONDAY...WITH CONTINUED MELTING WITHIN THE ICE PACK.

$$



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