Ice Forecast
Issued by NWS Anchorage, AK

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773
FZAK80 PAFC 222153 CCA
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
155 PM AKDT WEDNESDAY 22 MARCH 2017

FORECAST VALID...MONDAY 27 MARCH 2017

ANALYSIS CONFIDENCE...HIGH TO MODERATE

SYNOPSIS...HIGH PRESSURE WILL REMAIN OVER THE NORTHERN BERING SEA
THROUGH THURSDAY... SLOWLY SHIFTING NORTHEAST FRIDAY THROUGH MONDAY.
A LARGE LOW WILL MOVE NEAR THE WESTERN ALEUTIAN ISLANDS FRIDAY...
PERSISTING THROUGH MONDAY.

-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 55N 163.7W TO
56.6N 159.7W TO 57.7N 160.7W TO 56.3N 163.4W TO 62.7N 177.2W AND
CONTINUES IN RUSSIAN WATERS. THE ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH MONDAY FOR THE BERING SEA...EASTERLY FLOW WILL
INCREASE OVER THE MAIN BERING SEA ICE EDGE THROUGH MONDAY WHILE
TURNING MORE NORTHEASTERLY LATER IN THE PERIOD. THE ICE EDGE IS
EXPECTED TO SHIFT TO THE WEST SOUTHWEST 25 TO 35 NM THROUGH MONDAY.

-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.

THE MAIN ICE EDGE IN COOK INLET EXTENDS FROM NEAR 59.8N 151.8W TO
59.9N 152W TO 59.7N 152.9W AND CONTINUES DOWN THE WEST COAST OF
LOWER COOK INLET. 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 SATURDAY FOR COOK INLET...NORTHERLY WINDS WILL
PERSIST OVER COOK INLET THROUGH MONDAY. SEA ICE COVERAGE WILL LIKELY
REMAIN FAIRLY STEADY THROUGH MONDAY. 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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