340
FZAK80 PAFC 212355
ICEAFC
SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
255 PM AKST MONDAY 21 JANUARY 2019
FORECAST VALID...SATURDAY 26 JANUARY 2019
ANALYSIS CONFIDENCE...HIGH
SYNOPSIS...A COMPLEX AREA OF LOW PRESSURE WILL PERSIST OVER THE
SOUTHERN BERING SEA THROUGH SATURDAY. WEAKER LOWS ROTATING AROUND
THE MAIN LOW WILL LIKELY MOVE NORTHWARD THROUGH THE BERING SEA
WEDNESDAY THROUGH SATURDAY.
-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ200-NORTON SOUND-
PKZ215-KOTZEBUE SOUND-
PKZ220-WALES TO CAPE THOMPSON-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-
ICE COVERED.
-BERING SEA-
PKZ160-BRISTOL BAY-
PKZ180-KUSKOKWIM DELTA AND 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 56.6N 159.7W
TO 58N 158.2W TO 59.3N 171.2W TO 61.6N 173.1W TO 61.2N 179.9E AND
CONTINUES WESTWARD IN RUSSIAN WATERS. THE ICE EDGE IS MAINLY OPEN
WATER.
FORECAST FOR THE BERING SEA (DAYS 1 THROUGH 5)...WINDS WILL
GRADUALLY WEAKEN ALONG AND NEAR THE ICE EDGE, AND REMAIN GENERALLY
NORTHERLY TO EASTERLY THROUGH SATURDAY. HOWEVER, THERE WILL BE SOME
BRIEF PERIODS OF LIGHT AND VARIABLE WINDS AS WEAK LOWS MOVE
NORTHWARD THROUGH THE EASTERN BERING SEA. THE MAIN ICE EDGE WILL
MOVE 20 TO 35 NM TO THE WEST THROUGH SATURDAY. WINDS WITHIN BRISTOL
BAY WILL BE MORE VARIABLE AND SOME OF THE SEA ICE COULD MELT DUE TO
WARMER AIR AS WELL AS WIND AND WAVE ACTION.
-COOK INLET-
PKZ140-COOK INLET NORTH OF KALGIN ISLAND-
PKZ139-COOK INLET KALGIN ISLAND TO PT. BEDE-
ANALYSIS CONFIDENCE...HIGH
SYNOPSIS...A SERIES OF LOWS AND ASSOCIATED FRONTS WILL MOVE
NORTHWARD THROUGH THE COOK INLET REGION THROUGH SATURDAY.
THE MAIN ICE EDGE WITHIN COOK INLET EXTENDS FROM 60.3N 151.4W TO
60.5N 151.6W TO 60.2N 152.4W TO 59.8N 153W. SEA ICE HAS ALSO BEEN
OBSERVED IN SHALLOW AND PROTECTED BAYS WITHIN SOUTHERN COOK INLET.
FORECAST FOR COOK INLET (DAYS 1 THROUGH 5)...WINDS WILL GENERALLY BE
NORTHERLY THROUGH SATURDAY, ALTHOUGH THERE MAY BE A PERIOD OF
SOUTHERLY WINDS LATER THIS WEEK. WARMER AIR WILL QUICKLY MOVE IN
MONDAY NIGHT AND TUESDAY, AND WILL LIKELY LINGER THROUGH THE REST OF
THE WEEK. THIS WOULD RESULT IN SEA ICE MELTING BACK WITHIN THE
INLET, ESPECIALLY IF AIR TEMPERATURES CLIMB ABOVE FREEZING.
SCHRECK
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