309
FZAK80 PAFC 162208
ICEAFC

Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters
National Weather Service - Alaska Sea Ice Program
208 PM AKDT Monday 16 June 2025

FORECAST VALID...Saturday 21 June 2025

ANALYSIS CONFIDENCE...Moderate to high

SYNOPSIS...High pressure will persist across the Bering Sea, Chukchi
Sea, and Beaufort Sea through at least Wednesday. A low from the
North Pacific will track into the Bering Sea on Wednesday and then
linger through Saturday. Low pressure will spread east into the
Chukchi Sea by 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 winds will shift easterly from
Tuesday through Thursday. On Friday and Saturday, winds become light
and variable. Sea ice will drift to the west through Thursday, and
then movement will diminish over the weekend as winds lighten. Some
shorefast ice will likely break off through the forecast period.

-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.

The main ice edge extends from near Wales to 67 1N 165 53W to 69
1N 169 21W to 66 38N 170 12W. The ice edge is open water.

From land-based points in Alaska, the main ice edge extends from
near Wales to 45 nm north of Shishmaref to 177 nm northwest of
Shishmaref to 100 nm west of Shishmaref. The ice edge is open water.

FORECAST FOR THE CHUKCHI SEA (DAYS 1 through 5)...Forecast
confidence is high. Northerly winds will persist into Tuesday, and
then winds shift southerly later Tuesday through Saturday. There
will likely be periods of light and variable winds on Thursday. When
winds shift southerly, southerly ocean currents near the Bering
Strait and easterly currents near Point Hope will help to enhance
the northerly/northwesterly movement of sea ice. Any remaining
shorefast ice along the Alaska coast will continue to break up.
Overall, areas of open water will continue to expand.

-BERING SEA-

PKZ806-Sledge Island to Wales out to 15 nm-
PKZ817-North side of Saint Lawrence Island out to 15 nm-
PKZ854-Sledge Island to Wales greater than 15 nm-

The main ice edge in the Bering Sea extends from near Savoonga to 66
27N 168 18W to 64 57N 167 24W to the northeast corner of Saint
Lawrence Island. The ice edge is open water.

From land-based points in Alaska, the main ice edge in the Bering
Sea extends from near Savoonga to 43 nm north of Diomede to near
Ukivok to the northeast corner of Saint Lawrence Island. The ice
edge is open water.

FORECAST FOR THE BERING SEA (DAYS 1 through 5)...Forecast confidence
is high. Over the remaining ice pack, winds become southerly later
Tuesday through Wednesday. Winds shift northerly on Thursday and
Friday and then southeasterly on Saturday. Overall, sea ice will
continue to melt throughout the forecast period, and the remaining
ice will continue to drift north through the Bering Strait during
periods of southerly winds.

&&
Fenrich