Ice Forecast
Issued by NWS Anchorage, AK

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FZAK80 PAFC 250028

Sea Ice Advisory for Western and Arctic Alaskan Coastal Waters
National Weather Service Anchorage Alaska
325 PM AKST Monday 24 February 2020

FORECAST VALID...Saturday 29 February 2020

ANALYSIS CONFIDENCE...High to moderate

SYNOPSIS...A series of lows will move eastward across the southern
Bering Sea and North Pacific, while high pressure remains over
mainland Alaska and the northern Bering Sea through Saturday.

-Beaufort Sea-
-Chukchi Sea-
-Bering Sea-
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-
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-
PKZ165-Port Heiden to Cape Sarichef-
PKZ185-Saint Matthew Island-
PKZ412-Bering Sea Offshore 171W to 180 and N of 56N-
PKZ414-Bering Sea Offshore East of 171W-

The main sea ice edge extends from near 56N 161.4W to 57.3N 159.8W
to 57.9N 162.2W to 57.3N 161.9W to 56.8N 163.4W to 57.9N 167.2W to
58N 170.5W to 60.3N 176.6W and continues in Russian waters. The ice
edge is mainly open water, with strips of sea ice approximately 15nm
north of this line. The strips have compacted against the main ice
pack with the recent southerly winds, so the area of strips is only
5 to 10 nm wide at this time before reaching the main ice pack.

FORECAST FOR THE BERING SEA (Days 1 through 5)...As lows move
eastward across the south side of the Aleutian Islands, winds over
the Bering Sea will generally be from the from east through
Saturday. The ice edge will move westward 25 to 40nm, with some
strips of ice being pulled off the main pack.

Looking ahead, another period of northerly winds is expected over
much of the Bering Sea early next week.

-Cook Inlet-
PKZ140-Cook Inlet North of Kalgin Island-

Ice covered.

PKZ130-West of Barren Islands Including Kamishak Bay-
PKZ138-Shelikof Strait-
PKZ139-Cook Inlet Kalgin Island to Pt. Bede-
PKZ141-Kachemak Bay-


SYNOPSIS...High pressure will remain over mainland Alaska through
Saturday. A low will move into the Gulf of Alaska Wednesday through

The main ice edge in Cook Inlet extends from near Ninilchik to 59.8N
152.8W to 59.4N 153.6W to 59N 153.4W. The ice edge is mainly open

FORECAST FOR COOK INLET (Days 1 through 5)...Winds will generally be
northerly through Saturday. Temperatures will moderate somewhat over
the region, with highs in the mid to upper 20s and lows in the teens
through Saturday. Some new sea ice growth is expected through
Saturday, and the ice edge will likely advance up to 15nm south
through Saturday.

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