Ice Forecast
Issued by NWS Anchorage, AK

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FZAK80 PAFC 272312

Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters
National Weather Service Anchorage Alaska
212 PM AKST Friday 27 November 2020

FORECAST VALID...Wednesday 2 December 2020

ANALYSIS CONFIDENCE...High to moderate.

SYNOPSIS...High pressure will remain over the Arctic Ocean while a
series of lows move eastward across the southern Bering Sea through
Wednesday. Broad low pressure over interior Alaska will persist as
well through Wednesday.

-Beaufort Sea-

PKZ235-Point Franklin to Cape Halkett-
PKZ240-Cape Halkett to Flaxman Island-
PKZ245-Flaxman Island to Demarcation Point-
PKZ510-Eastern U.S. Arctic Offshore-

Ice covered.

-Chukchi Sea-
-Bering Sea-

PKZ160-Bristol Bay-
PKZ180-Kuskokwim Delta and Etolin Strait-
PKZ181-North and West of Nunivak Island-
PKZ200-Norton Sound-
PKZ210-Dall Point to Wales-
PKZ215-Kotzebue Sound-
PKZ220-Wales to Cape Thompson-
PKZ225-Cape Thompson to Cape Beaufort-
PKZ230-Cape Beaufort to Point Franklin-
PKZ500-Western U.S. Arctic Offshore-
PKZ505-Central U.S. Arctic Offshore-

The main ice edge in the Chukchi Sea extends from Wales 66.4N 166.3W
to 67.1N 166.3W to 67.6N 164.7W to 68.4N 167.1W to 70.4N 164.6W to
70.7N 161.1W to 71.6N 160.7W to 72.2N 164.6W to 72.8N 164.3W to
73.6N 171.8W and continues in Russian waters. The ice edge is mainly
open water.

FORECAST FOR THE CHUKCHI SEA (Days 1 through 5)...Moderate easterly
winds will become northerly by Monday, and may become easterly again
by Wednesday. Expect the sea ice growth to continue especially along
the west coast of Alaska and near the ice edge. There may also be
some new sea ice growth over Hannah and Herald Shoals by Wednesday.

The main ice edge in the Bering Sea extends from near Quinhagak to
59.7N 164.4W to 61.6N 166.3W to 64.1N 164.7W to 63.9N 162.9W to
64.4N 163.2W. There is also some low concentration river ice moving
into interior Bristol Bay.

FORECAST FOR THE BERING SEA (Days 1 through 5)...Winds will be
variable as lows move eastward across the region through the
weekend, then winds will become northerly Monday through Wednesday.
As temperatures fall and winds become northerly, expect sea ice
growth up to 30nm offshore along the west coast of Alaska including
throughout Norton Sound.

-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-

The main ice edge in Cook Inlet extends from 61.1N 151W to 61N
150.4W. The ice edge is mainly open water.

FORECAST FOR COOK INLET (Days 1 through 5)...A series of lows will
move through the Cook Inlet region through Wednesday. Variable winds
and moderate temperatures will likely inhibit sea ice growth within
upper Cook Inlet through Wednesday.

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