Ice Forecast
Issued by NWS Anchorage, AK

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000
FZAK80 PAFC 272251
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
250 PM AKDT MONDAY 27 MARCH 2017

FORECAST VALID...SATURDAY 1 APRIL 2017

ANALYSIS CONFIDENCE...HIGH

SYNOPSIS...A SERIES OF LOWS WILL MOVE EASTWARD ACROSS THE NORTH
PACIFIC OCEAN AND NORTHERN GULF OF ALASKA...WHILE HIGH PRESSURE
MOVES NORTHWARD OVER THE ARCTIC OCEAN THROUGH SATURDAY.

-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-
PKZ181-NORTH AND WEST OF NUNIVAK ISLAND-
PKZ210-DALL POINT TO WALES-

ICE COVERED.

PKZ165-PORT HEIDEN TO CAPE SARICHEF-
PKZ180-KUSKOKWIM DELTA TO ETOLIN STRAIT-
PKZ185-SAINT MATTHEW ISLAND WATERS-
PKZ412-BERING SEA OFFSHORE 171W TO 180 AND N OF 56N-
PKZ414-BERING SEA OFFSHORE EAST OF 171W-

THE MAIN ICE EDGE IN THE BERING SEA EXTENDS FROM NEAR 55.8N 162.2W
TO 56.1N 160.9W TO 57.4N 161.6W TO 56.3N 164W TO 58.4N 172.7W TO
62.9N 178.3W TO 64.2N 175.2W AND CONTINUES IN RUSSIAN WATERS. THE
ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH SATURDAY FOR THE BERING SEA...EASTERLY FLOW WILL
BECOME NORTHERLY ROUGHLY EAST OF 170W ON TUESDAY...THEN FLOW WILL
BECOME NORTHERLY ACROSS THE ENTIRE ICE EDGE THURSDAY THROUGH
SATURDAY. THE ICE EDGE IS EXPECTED TO SHIFT TO THE SOUTH-SOUTHWEST
25 TO 35 NM THROUGH SATURDAY...WITH STRIPS OF ICE BEING PULLED OFF
THE MAIN ICE PACK.

-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...HIGH

SYNOPSIS FOR COOK INLET...A SERIES OF LOWS WILL MOVE EASTWARD
THROUGH THE NORTHERN GULF OF ALASKA THROUGH SATURDAY.

THE MAIN ICE EDGE IN COOK INLET EXTENDS FROM NEAR 60N 151.7W TO
59.5N 152.7W TO 59.6N 153W TO 59.3N 153.6W TO 58.7N 153.1W TO 58.4N
154W. 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...WINDS WILL GENERALLY BE
LIGHT AND VARIABLE THROUGH WEDNESDAY...THEN BECOME NORTHERLY
THURSDAY THROUGH SATURDAY. DAYTIME TEMPERATURES ARE FORECAST TO BE
IN THE LOW TO MID 30S...THEREFORE THERE COULD BE SOME MELTING OF THE
SEA ICE WITHIN COOK INLET. STRIPS OF ICE WILL CONTINUE TO BE PULLED
OFF THE SOUTHERN END OF THE ICE PACK MAINLY THURSDAY THROUGH SUNDAY
WHEN WINDS ARE NORTHERLY.

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

$$



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