911
FZAK80 PAFC 012303
ICEAFC

Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters
National Weather Service - Alaska Sea Ice Program
302 PM AKDT Wednesday 1 October 2025

FORECAST VALID...Monday 6 October 2025


ANALYSIS CONFIDENCE...High.


SYNOPSIS...High pressure centered over the High Arctic shifts
westward which will allow the storm track to set up from the western
Bering Sea into the Chukchi Sea which will swing fronts over the
southern Beaufort Sea. Several weak systems will move from the
mainland to the Canadian Archipelago before a large system develops
in the Bering Sea Sunday and Monday.


-BEAUFORT SEA-


PKZ505-Central US Arctic Offshore-
PKZ510-Eastern US Arctic Offshore-
PKZ859-Point Franklin to Cape Halkett from 45 to 140 nm-
PKZ860-Cape Halkett to Flaxman Island from 45 to 60 nm-
PKZ861-Flaxman Island to Demarcation Point from 20 to 45 nm-


The main ice edge in the Beaufort Sea extends from 71 47N 154 54W
to 71 10N 152 24W to 70 26N 144 47W to 70 18N 141 6W and
continues east 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 north of Ikiak to 20 nm north of Cape Halkett
to 20 nm northwest of Kaktovik to 36 nm north of Demarcation Point
and continues east into Canadian waters. The ice edge is open
water.

FORECAST FOR THE BEAUFORT SEA (DAYS 1 through 5)...Forecast
confidence is high. New ice has developed along protected areas of
the coast. Growth will continue through Saturday then a front and
stronger northeasterly winds will likely melt everything that has
developed along the coast. Otherwise ice will continue to move
southwest 5-10 nm a day while continuing to grow closer to the pack.


-CHUKCHI SEA-


PKZ505-Central US Arctic Offshore-
PKZ859-Point Franklin to Cape Halkett from 15 to 75 nm-


The main ice edge in the Chukchi Sea extends from 71 47N 154 54W
to 73 8N 161 42W to 73 43N 169 37W and continues southwest into
Russian waters. The ice edge is open water.


From land-based points in Alaska, the main ice edge in the Chukchi
Sea extends from 40 nm north of Ikiak to 135 nm northwest of
Utqiagvik to 250 nm northwest of Point Franklin and continues
southwest into Russian waters. The ice edge is open water.


FORECAST FOR THE CHUKCHI SEA (DAYS 1 through 5)...Forecast
confidence is high. Light northerly winds continue through Saturday
before turning moderate easterly on Sunday and Monday. Expect new
ice to continue to grow out from the ice edge through Saturday, then
melt during the easterlies on Sunday and Monday.



&&
Lawson