391
FZAK80 PAFC 082155
ICEAFC

Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters
National Weather Service - Alaska Sea Ice Program
155 PM AKDT Friday 8 August 2025

FORECAST VALID...Wednesday 13 August 2025

ANALYSIS CONFIDENCE...High

SYNOPSIS...A low weakens while lingering over the Beaufort and
Chukchi Seas through the weekend. High pressure builds over the
Beaufort Sea on Monday and Tuesday. Low pressure strengthens over
the Chukchi Sea starting Monday and spreads east across the Beaufort
Sea through Wednesday. Over the Bering Sea, high pressure builds
through the weekend and then low pressure spreads Monday and Tuesday
before high pressure builds again on Wednesday.

-BEAUFORT SEA-

PKZ505-Central US Arctic Offshore-
PKZ510-Eastern US Arctic Offshore-

Ice covered.

PKZ813-Point Franklin to Cape Halkett out to 15 nm-
PKZ814-Cape Halkett to Flaxman Island out to 15 nm-
PKZ815-Flaxman Island to Demarcation Point out to 15 nm-
PKZ859-Point Franklin to Cape Halkett from 15 to 75 nm-
PKZ860-Cape Halkett to Flaxman Island from 15 to 80 nm-
PKZ861-Flaxman Island to Demarcation Point from 15 to 75 nm-

The main ice edge in the Beaufort Sea extends from near 70 29N 145
24W to 70 31N 140 26W to 69 43N 138 46W to 69 53N 135 1W and
continues into Canadian waters. The ice edge is open water.

From land-based points in Alaska, the main ice edge in the Beaufort
Sea extends from 40 nm northwest of Kaktovik to 65 nm northeast of
Kaktovik to 100 nm east of Kaktovik to 170 nm east of Kaktovik and
continues into Canadian waters. The ice edge is open water.

FORECAST FOR THE BEAUFORT SEA (DAYS 1 through 5)...Forecast
confidence is high. Northeasterly winds become northwesterly on
Sunday and then generally easterly from Monday through Wednesday.
Overall, expect sea ice to continue melting and for ice free and
open water areas near the coast to continue expanding.

-CHUKCHI SEA-

PKZ500-Western US Arctic Offshore-
PKZ505-Central US Arctic Offshore-

Ice covered.

PKZ813-Point Franklin to Cape Halkett out to 15 nm-
PKZ858-Cape Beaufort to Point Franklin from 15 to 85 nm-
PKZ859-Point Franklin to Cape Halkett from 15 to 75 nm-

The main ice edge in the Chukchi Sea extends from near Ikiak to 71
22N 158 24W to 71 21N 166 1W to 71 21N 174 2W and continues
southwest into Russian waters. The ice edge is open water. There is
an area of marginal ice located south of the main ice edge.

From land-based points in Alaska, the main ice edge in the Chukchi
Sea extends from near Ikiak to 30 nm west of Utqiagvik to 170 nm
west of Utqiagvik to 210 nm northwest of Cape Lisburne and continues
southwest into Russian waters. The ice edge is open water. There is
an area of marginal ice located south of the main ice edge.

FORECAST FOR THE CHUKCHI SEA (DAYS 1 through 5)...Forecast
confidence is high. Northerly winds will persist through Sunday and
then shift southerly Monday and Tuesday. Winds become northwesterly
on Wednesday. Expect the ice pack to continue degrading through the
forecast period. Winds will bring the ice edge southward Saturday
and Sunday and then northward on Monday and Tuesday.

&&
Fenrich