629
FZAK80 PAFC 052320
ICEAFC

Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters
National Weather Service - Alaska Sea Ice Program
320 PM AKDT Monday 5 May 2025

FORECAST VALID...Saturday 10 May 2025.

ANALYSIS CONFIDENCE...Moderate.

SYNOPSIS...A low near Kodiak Island will linger there as it
gradually weakens through the week. Another low from the North
Pacific will track east across the Bering Sea through Saturday. High
pressure will persist over the Chukchi and Beaufort Seas through
Saturday.

-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 to easterly winds will persist
through Thursday, and then winds will shift northwesterly for Friday
and Saturday. Expect sea ice to drift west-southwestward through
Thursday and then easterly on Saturday. 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. Northerly to easterly winds will generally
persist through Saturday. On Tuesday and Wednesday, winds may become
light and variable. The polynya off the northwest coast of Alaska
will persist and continue to fill in with new ice and multi-year sea
ice will continue to drift west to southwest across the Chukchi Sea.
South of Point Hope, sea ice is expected to remain fairly stationary
through Saturday.

-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-
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.

PKZ764-Kuskokwim Delta from 15 to 80 nm-
PKZ767-Saint Matthew Island Waters-
PKZ816-South side of Saint Lawrence Island out to 15 nm-

The main ice edge extends from near Quinhagak to 59 13N 163 26W to
59 31N 164 19W to 56 51N 169 32W to 57 12N 170 58W to 60 32N
179 52W 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 45 nm southeast of Kipnuk to 25 nm southwest of
Kipnuk to 15 nm north of Saint George to 25 nm west of Saint Paul to
215 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. Northerly to northwesterly winds will persist across the
Bering Sea ice pack through Wednesday. Then, winds become easterly
to southeasterly from Thursday through Saturday. Polynyas will
continue to expand and will generally remain open, especially south
of Saint Lawrence Island and Nunivak Island, and also across
northeastern Norton Sound. Sea ice has reached Saint Paul Island,
but warmer waters around the Pribilof Islands will aid in the sea
ice melting. Later in the week when winds shift
easterly/southeasterly, sea ice will retreat away from the Pribilof
Islands.

&&
Fenrich