Ice Forecast
Issued by NWS Anchorage, AK

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000
FZAK80 PAFC 152321
ICEAFC

Sea Ice Advisory for Western and Arctic Alaskan Coastal Waters
National Weather Service Anchorage Alaska
215 PM AKST Monday 15 January 2018

FORECAST VALID...Friday 19 January 2018

ANALYSIS CONFIDENCE...Moderate

SYNOPSIS...Low pressuring lifting north through the Bering will
weaken as it moves into the Chukchi Sea. High pressure will begin to
rebuild into the Arctic through the end of the week.

-Arctic Ocean-
-Beaufort Sea-
-Chukchi Sea-
-Bering 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-
PKZ210-Dall Point to Wales-

The main ice edge in the Bering Sea extends from near Goodnews Bay
to Nunivak Island to 61.9N 169W to Saint Lawrence Island to 64.7N
169.1W and continues to 63.4N 172.4W and continues into Russian
waters. The ice edge is mainly open water to the east and west of
St. Lawrence island. The ice edge is not uniform for areas to the
north of St. Lawrence island.

FORECAST FOR THE BERING SEA (Days 1 through 5)...Winds across the
Bering will be moderating through this week. As a low lifts towards
the Chukchi sea, winds will be strong around it. Otherwise, winds
will remain predominantly easterly to northerly through the week.
The ice edge will build south around 10 nm through Friday.

-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...Moderate

SEA ICE EDGE DISCUSSION...The main ice edge within Cook Inlet
extends from near Drift River to Kalgin Island and east towards
Kenai. There is also sea ice within protected areas on the west side
of Cook Inlet to Kamishak Bay. The ice edge is mainly open water.

FORECAST FOR COOK INLET (Days 1 through 5)...Temperatures will
fluctuate around the freezing mark through the middle of the week
until they fall below freezing by the end of the week. Continuous
down-inlet flow may lead to ice breaking off and drifting southward
into open waters.

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

$$



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