Ice Forecast
Issued by NWS Anchorage, AK

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000
FZAK80 PAFC 182316
ICEAFC

Sea Ice Advisory for Western and Arctic Alaskan Coastal Waters
National Weather Service Anchorage Alaska
315 PM AKDT Friday 18 May 2018

FORECAST VALID...Wednesday 23 May 2018

ANALYSIS CONFIDENCE...High

SYNOPSIS...High pressure will persist over the far northern Beaufort
Sea through Wednesday. Low pressure will pass south of the Aleutian
chain into the Gulf of Alaska by Sunday night. Another low will
enter the far western Bering Sea on Monday and move over the Central
Aleutians by Wednesday.

-Arctic Ocean-
-Beaufort Sea-
-Bering Sea-
PKZ215-Kotzebue Sound-
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.

-Chukchi Sea-
PKZ220-Wales to Cape Thompson-

FORECAST FOR THE CHUKCHI SEA (Days 1 through 5)...Northeasterly
winds will persist over the southern Chukchi Sea through Wednesday,
becoming stronger this weekend and again Monday night into Tuesday.
The ice pack is expected to shift to the southwest by 20 to 30 nm
through Monday.

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

The remaining sea ice in the eastern Bering Sea is largely confined
to the Alaskan coast. Ice extends up to 4 nm offshore along the
coast between Scammon Bay and Kwikpak. An ice edge also extends from
65N 166.7W to 65.6N 169.5W to 64.3N 171.8W and continues along the
Russian coast to 64.3N 172.9W. There is additional ice within bays
of Norton Sound. The ice edge is mainly open water.

FORECAST FOR THE BERING SEA (Days 1 through 5)...Generally northerly
winds will persist through the Bering Strait and northern Bering Sea
through Wednesday. Winds will increase this weekend and again Monday
night into Tuesday. Strips of pack ice from the southern Chukchi Sea
may drift south into the Bering strait region through Wednesday.
This ice will decrease in concentration and eventually melt out as
it moves into open water. The remaining coastal pack ice within the
Bering Sea will continue to deteriorate through Wednesday. Strips of
ice may be pulled away from the pack and drift south into open water
farther offshore, but will then likely melt as they encounter warmer
sea surface and air temperatures.

$$


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