119
FZAK80 PAFC 252240
ICEAFC

Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters
National Weather Service - Alaska Sea Ice Program
240 PM AKDT Friday 25 April 2025

FORECAST VALID...Wednesday 30 April 2025.

ANALYSIS CONFIDENCE...High to moderate.

SYNOPSIS...Various lows traverse the Bering Sea through Tuesday, and
then high pressure starts to build over the western Bering Sea.
Through the forecast period, weak low pressure will persist across
the southern Chukchi Sea and high pressure will persist across the
northern Chukchi Sea, Beaufort Sea, and High Arctic.

-BEAUFORT SEA-

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

Ice covered.

FORECAST FOR THE BEAUFORT SEA (DAYS 1 through 5)...Forecast
confidence is high. Northeasterly winds will persist through
Wednesday. Expect sea ice to slowly drift west-southwestward through
the forecast period, though sea ice near the Alaska coastline will
likely move very little overall.

-CHUKCHI SEA-

PKZ500-Western US Arctic Offshore-
PKZ505-Central US Arctic Offshore-
PKZ807-Wales to Cape Espenberg out to 15 nm-
PKZ808-Cape Espenberg to Motherwood Point out to 10 nm-
PKZ809-Motherwood Point to Cape Krusenstern out to 10 nm-
PKZ810-Cape Krusenstern to Cape Thompson out to 15 nm-
PKZ811-Cape Thompson to Cape Beaufort out to 15 nm-
PKZ812-Cape Beaufort to Point Franklin out to 15 nm-
PKZ813-Point Franklin to Cape Halkett out to 15 nm-
PKZ855-Kotzebue Sound greater than 10 nm-
PKZ856-Wales to Cape Thompson greater than 15 nm-
PKZ857-Cape Thompson to Cape Beaufort from 15 to 85 nm-
PKZ858-Cape Beaufort to Point Franklin from 15 to 85 nm-
PKZ859-Point Franklin to Cape Halkett from 15 to 75 nm-

Ice covered.

FORECAST FOR THE CHUKCHI SEA (DAYS 1 through 5)...Forecast
confidence is high. Northeasterly winds will generally persist
through Wednesday. The polynya off the northwest coast of Alaska
will persist and continue to fill in with new ice. Otherwise sea ice
is expected to remain fairly stationary through Wednesday.

-BERING SEA-

PKZ763-Kuskokwim Delta and Etolin Strait out to 15 nm-
PKZ765-North and West of Nunivak Island-
PKZ801-Etolin Strait to Dall Point out to 15 nm-
PKZ802-Dall Point to Kwikpak Pass out to 15 nm-
PKZ803-Kwikpak Pass to Cape Stephens out to 15 nm-
PKZ804-Cape Stephens to Moses Point out to 15 nm-
PKZ805-Moses Point to Sledge Island out to 15 nm-
PKZ806-Sledge Island to Wales out to 15 nm-
PKZ816-South side of Saint Lawrence Island out to 15 nm-
PKZ817-North side of Saint Lawrence Island out to 15 nm-
PKZ850-Etolin Strait to Kwemeluk Pass from 15 to 90 nm-
PKZ851-Southwest of Saint Lawrence Island from 15 to 100 nm-
PKZ852-Norton Sound greater than 15 nm-
PKZ853-Kwemeluk Pass to Kwikpak Pass from 15 to 90 nm-
PKZ854-Sledge Island to Wales greater than 15 nm-

Ice covered.

PKZ414-Bering Sea Offshore East of 171W-
PKZ760-Bristol Bay greater than 15 NM-
PKZ761-Bristol Bay from Port Heiden to Cape Chichagof out to 15 nm-
PKZ762-Bristol Bay from Cape Chichagof to Cape Peirce out to 15 nm-
PKZ764-Kuskokwim Delta from 15 to 80 nm-
PKZ767-Saint Matthew Island Waters-

The main ice edge extends from near Quinhagak to 59 32N 164 1W to
57 19N 166 21W to 57 43N 170 11W to 58 48N 172 54W to 60 35N
177 14W and continues into Russian waters. The ice edge is open
water.

From land-based points in Alaska, the main ice edge extends
from near Quinhagak to 25 nm south of Kipnuk to 130 nm northeast of
Saint Paul to 35 nm north of Saint Paul to 90 nm south of Saint
Matthew Island to 125 nm west of Saint Matthew Island and continues
into Russian waters. The ice edge is open water.

FORECAST FOR THE BERING SEA (DAYS 1 through 5)...Forecast confidence
is high. Winds near the ice edge will be variable through Sunday
while a low tracks east, and then winds become northerly from Monday
through Wednesday. Across the majority of the ice pack, winds will
generally be northerly to northeasterly through the forecast period.
Sea ice will be quite mobile through Wednesday and the ice pack will
continue to break apart/concentrations will continue to decrease.

&&
Fenrich