Ice Forecast
Issued by NWS Anchorage, AK

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FZAK80 PAFC 172241
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
241 PM AKDT FRIDAY 17 OCTOBER 2014

FORECAST VALID...WEDNESDAY 22 OCTOBER 2014

ANALYSIS CONFIDENCE...MODERATE

SYNOPSIS...HIGH PRESSURE WILL PERSIST OVER THE CHUKCHI AND BEAUFORT
SEAS THROUGH EARLY NEXT WEEK. A FRONT WILL MOVE THROUGH THE CHUKCHI
SEA TUESDAY THROUGH WEDNESDAY.

-ARCTIC OCEAN-

ICE COVERED.

-CHUKCHI SEA-
PKZ500-WESTERN US ARCTIC OFFSHORE-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ215-KOTZEBUE SOUND-

THE MAIN ICE EDGE LIES FROM A POINT ROUGHLY 60 NM NORTH OF BARROW TO
73.8N 166.2W TO 73.1N 169.4W TO 73.1N 174.6W TO 73.7N 179E TO 71.7N
178.7E TO 71.9N 175.1E AND CONTINUES WEST IN THE RUSSIAN ARCTIC. THE
ICE EDGE CONSISTS OF OPEN WATER. NEW ICE HAS FORMED NEW ICE HAS
FORMED IN THE PROTECTED WATERS OF THE ALASKA COAST FROM PEARD BAY TO
POINT HOPE. NEW SEA ICE HAS ALSO FORMED IN THE SHALLOW WATERS OF
KOTZEBUE SOUND AND THE PROTECTED WATERS NEAR KIVALINA.

FORECAST THROUGH WEDNESDAY FOR THE CHUKCHI SEA...MODERATE
NORTHEASTERLY TO EASTERLY FLOW IS EXPECTED TO PERSIST OVER THE
CHUKCHI SEA ICE EDGE THROUGH MONDAY. WINDS WILL BECOME MODERATE
SOUTHERLY AHEAD OF A FRONT MMONOVING THROUGH THE CHUKCHI SEA ON
TUESDAY AND WEDNESDAY. THE OVERALL ICE EDGE IS EXPECTED TO EXPAND TO
THE WEST SOUTHWEST 20 TO 30 NM THROUGH MONDAY...THEN TO THE NORTH 10
TO 25 NM THROUGH WEDNESDAY. IN ADDITION NEW ICE IS EXPECTED TO
CONTINUE FORMING IN THE PROTECTED SHALLOW AREAS ALONG THE COAST FROM
KOTZEBUE SOUND UP TO PEARD BAY.

-BEAUFORT SEA-
PKZ505-CENTRAL US ARCTIC OFFSHORE-
PKZ510-EASTERN US ARCTIC OFFSHORE-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-SATURDAY

THE MAIN ICE EDGE LIES FROM THE SOUTHWEST COAST OF BANKS ISLAND TO
72.3N 129.1W TO 71.5N 132.2W TO 70.9N 142.2W TO 71.3N 150.3W TO A
POINT ROUGHLY 60 NM NORTH OF POINT BARROW. THE ICE EDGE RANGES FROM
OPEN WATER TO 5 TENTHS NEW AND YOUNG SEA ICE IN STRIPS. NEW SEA ICE
LIES UP TO 115 NM OFF THE NORTHERN COASTLINE OF ALASKA EAST OF
HARRISON BAY AND UP TO 8NM OFF THE NORTHERN COASTLINE OF ALASKA
BETWEEN BARROW AND HARRISON BAY.

FORECAST THROUGH WEDNESDAY FOR THE BEAUFORT SEA...MODERATE EASTERLY
TO NORTHEASTERLY FLOW WILL PERSIST OVER MUCH OF THE BEAUFORT SEA
THROUGH WEDNESDAY. THE OVERALL ICE EDGE IS EXPECTED TO EXPAND 15 TO
25 NM TO THE WEST SOUTHWEST THROUGH WEDNESDAY AND NEW SEA ICE IS
EXPECTED TO CONTINUE FORMING WITHIN THE BARRIER ISLANDS OF THE
ALASKA NORTH COAST AND IN LOCATIONS OF LIGHT WINDS.

-BERING SEA-
PKZ200-NORTON SOUND-

NEW SEA ICE IS BEGINNING TO FORM IN THE SHALLOW PROTECTED WATERS OF
NORTHERN NORTON SOUND FROM PORT SAFETY TO GOLOVIN TO KOYUK.

FORECAST THROUGH WEDNESDAY FOR THE BERING SEA...NEW SEA ICE IS
EXPECTED TO SLOWLY CONTINUE FORMING IN THE SHALLOW PROTECTED WATERS
OF NORTHERN NORTON SOUND THROUGH WEDNESDAY.

$$

SCHRECK


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