Ice Forecast
Issued by NWS Anchorage, AK

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000
FZAK80 PAFC 202245
ICEAFC

Sea Ice Advisory for Western and Arctic Alaskan Coastal Waters
National Weather Service Anchorage Alaska
245 PM AKDT Friday 20 April 2018

FORECAST VALID...Wednesday 25 April 2018

ANALYSIS CONFIDENCE...High

SYNOPSIS...A series of lows will move through the southern and
western sections of the Bering Sea through Wednesday.

-Arctic Ocean-
-Beaufort Sea-
-Chukchi Sea-
-Bering Sea-
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-
PKZ180-Kuskokwim Delta and Etolin Strait-
PKZ181-North and west of Nunivak Island-
PKZ200-Norton Sound-
PKZ210-Dall Point to Wales-

The main ice edge in the Bering Sea extends from near 59.8N 162W to
59.5N 163.8W to 61.9N 166.3W to 63.1N 165.1W to 64.4N 167.9W to
63.6N 170.1W to 64.7N 169.8W to 64.1N 173.1W and continues along the
Russian coast. The ice edge is mainly open water.

FORECAST FOR THE BERING SEA (Days 1 through 5)...Winds will be
easterly to northeasterly through Wednesday. The ice edge is
expected to shift to the southwest 20 to 30 nm through Monday.

-Cook Inlet-
PKZ130-West of Barren Islands Including Kamishak Bay-
PKZ139-Cook Inlet Kalgin Island to Pt. Bede-
PKZ140-Cook Inlet North of Kalgin Island-

Analysis confidence...High

SEA ICE EDGE DISCUSSION...The only sea ice that remains within Cook
Inlet is within the upper end of Knik Arm, at the mouth of the
Susitna River, and stranded on mudflats along portions of the coast.
Occasionally some river ice will flow south from Knik Arm past the
Port of Anchorage before melting.

FORECAST FOR COOK INLET (Days 1 through 5)...Temperatures will
generally remain near or above freezing through Monday. The
remaining Cook Inlet sea ice will continue to gradually melt out
through Wednesday.

Please note...Cook Inlet sea ice changes significantly with the
tides.



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