Ice Forecast
Issued by NWS Anchorage, AK

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FZAK80 PAFC 242329
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
325 PM AKDT FRIDAY 24 MARCH 2017

FORECAST VALID...WEDNESDAY 29 MARCH 2017

ANALYSIS CONFIDENCE...HIGH

SYNOPSIS...HIGH PRESSURE WILL REMAIN OVER THE NORTHERN BERING SEA
THROUGH WEDNESDAY. A SERIES OF LOWS WILL LIKELY REMAIN SOUTH OF THE
ALEUTIAN ISLANDS THROUGH WEDNESDAY.

-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ220-WALES TO CAPE THOMPSON-
PKZ215-KOTZEBUE SOUND-
PKZ200-NORTON SOUND-

ICE COVERED.

-BERING SEA-

PKZ160-BRISTOL BAY-
PKZ165-PORT HEIDEN TO CAPE SARICHEF-
PKZ180-KUSKOKWIM DELTA TO ETOLIN STRAIT-
PKZ181-NORTH AND WEST OF NUNIVAK ISLAND-
PKZ185-SAINT MATTHEW ISLAND WATERS-
PKZ210-DALL POINT TO WALES-

THE MAIN ICE EDGE IN THE BERING SEA EXTENDS FROM NEAR 55.6N 162.4W
TO 55.7N 162.9W TO 56.3N 160.9W TO 57.3N 160.9W TO 56N 164W TO 58.8N
172.8W TO 62.5N 177.7W TO 64.1N 175W AND CONTINUES IN RUSSIAN
WATERS. THE ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH WEDNESDAY FOR THE BERING SEA...EASTERLY FLOW WILL
CONTINUE OVER THE MAIN BERING SEA ICE EDGE THROUGH MONDAY...THEN
BECOME MORE NORTHERLY TUESDAY AND WEDNESDAY. THE ICE EDGE IS
EXPECTED TO SHIFT TO THE WEST SOUTHWEST 25 TO 35 NM THROUGH
WEDNESDAY.

-COOK INLET-
PKZ130-WEST OF BARREN ISLANDS INCLUDING KAMISHAK BAY-
PKZ139-COOK INLET KALGIN ISLAND TO POINT BEDE-
PKZ140-COOK INLET NORTH OF KALGIN ISLAND-
PKZ141-KACHEMAK BAY-

COOK INLET ANALYSIS CONFIDENCE...MODERATE

SYNOPSIS FOR COOK INLET...HIGH PRESSURE AND GENERALLY LIGHT
NORTHERLY FLOW WILL PERSIST THROUGH MONDAY. LOW PRESSURE MAY MOVE
NORTHWESTWARD TOWARD THE WESTERN GULF OF ALASKA TUESDAY AND
WEDNESDAY.

THE MAIN ICE EDGE IN COOK INLET EXTENDS FROM NEAR 60N 151.8W TO
59.5N 152.6W TO 59.7N 152.9W TO 59.3N 153.6W TO 58.7N 153.1W TO
58.4N 154.1W. THE ICE EDGE IS MAINLY OPEN WATER. THERE IS ALSO SEA
ICE PRESENT IN NORTHWEST SHELIKOF STRAIT...AS WELL AS IN SHALLOW
AREAS OF KACHEMAK BAY.

FORECAST THROUGH WEDNESDAY FOR COOK INLET...NORTHERLY WINDS WILL
PERSIST OVER COOK INLET THROUGH MONDAY...THEN WINDS MAY SHIFT TO
SOUTHERLY IF LOW PRESSURE MOVE TOWARD THE COOK INLET REGION TUESDAY
AND WEDNESDAY. SEA ICE COVERAGE WILL LIKELY REMAIN FAIRLY STEADY
THROUGH WEDNESDAY. STRIPS OF ICE WILL CONTINUE TO BE PULLED OFF THE
SOUTHERN END OF THE ICE PACK.

PLEASE NOTE...COOK INLET ICE CHANGES SIGNIFICANTLY WITH THE TIDES.

$$


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