028
FZAK80 PAFC 132221
ICEAFC

Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters
National Weather Service - Alaska Sea Ice Program
221 PM AKDT Friday 13 June 2025

FORECAST VALID...Wednesday 18 June 2025

ANALYSIS CONFIDENCE...Moderate

SYNOPSIS...Low pressure will remain across the Bering Sea, Chukchi
Sea, and High Arctic through Saturday before high pressure spreads
across each of these areas through Wednesday. Mostly high pressure
will persist across the Beaufort Sea through the forecast period.

-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.  Winds will generally be out of the southeast to
southwest through Sunday. Winds then shift northeasterly on Monday
and easterly Tuesday and Wednesday. Sea ice will slowly drift to the
north through the weekend, with small polynyas likely forming today
and Saturday. Sea ice will drift back to the south on Monday and
then to the west starting Tuesday. 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 66 58N 166 37W to 68
13N 168 56W to 66 48N 170 46W to 66 3N 169 38W. The ice edge
is open water.

From land-based points in Alaska, the main ice edge extends from
near Wales to 45 nm northwest of Shishmaref to 130 nm northwest of
Shishmaref to 115 nm west of Shishmaref to 25 nm northwest of
Diomede. The ice edge is open water.

FORECAST FOR THE CHUKCHI SEA (DAYS 1 through 5)...Forecast
confidence is high. Southerly to southeasterly winds will persist
through Sunday. On Monday, winds direction becomes variable, however
winds will be generally southerly over the western Chukchi Sea and
northerly over the eastern Chukchi Sea. Southerly winds combined
with southerly ocean currents will continue to enhance northward sea
ice movement especially south of Point Hope. The polynya off the
northwest coast of Alaska will also expand to the north. Shorefast
ice in eastern Kotzebue Sound will continue to break up.

-BERING SEA-

PKZ767-Saint Matthew Island Waters-
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 63 38N 170
4W to 64 45N 168 55W to 64 7N 167 15W to 63 51N 168 32W to
the northeast corner of Saint Lawrence Island. The ice edge is open
water. There is also an area of brash ice approximately half way
between Saint Lawrence Island and Saint Matthew Island that is
quickly melting.

From land-based points in Alaska, the main ice edge in the Bering
Sea extends from 11 nm east of Savoonga to 75 nm north-northeast of
Savoonga to 87 nm northeast of Savoonga to 52 nm east-northeast of
Savoonga to the northeast corner of Saint Lawrence Island. The ice
edge is open water. There is also an area of brash ice approximately
half way between Saint Lawrence Island and Saint Matthew Island that
is quickly melting.  FORECAST FOR THE BERING SEA (DAYS 1 through
5)...Forecast confidence is high. Over the remaining ice pack,
southerly to easterly winds will persist through Monday. The
prolonged southerly to easterly winds will cause sea ice to drift
north to northwest off the northern coastline of Saint Lawrence
Island and towards the Bering Strait. The sea ice between Saint
Lawrence Island and Saint Matthew Island will completely melt, if it
hasnt already. Overall, sea ice will continue to melt throughout
the forecast period.

&&
Schreck/Fenrich