Ice Forecast
Issued by NWS Anchorage, AK

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FZAK80 PAFC 302241

Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters
National Weather Service Anchorage Alaska
241 PM AKDT Friday 30 July 2021

FORECAST VALID...Wednesday August 4 2021


SYNOPSIS...Weak low pressure currently over the Chukchi Sea will
give way to a stronger system from the Bering Sea on Saturday. That
system will weaken through the weekend. High pressure builds back
over the area Monday and Tuesday.

-Beaufort Sea-
-Chukchi Sea-

PKZ235-Point Franklin to Cape Halkett-
PKZ500-Western U.S. Arctic Offshore-
PKZ505-Central U.S. Arctic Offshore-
PKZ510-Eastern U.S. Arctic Offshore-

Ice covered.

-Chukchi Sea-

The main ice edge extends from near Utqiagvik to 71 14`N 164 6`W to
72 33`N 167 16`W to 72 21`N 169 33`W to 70 9`N 169 27`W to 70 55`N
176 31`W to 69 25`N 179 29`W to 67 3`N 173 6`W. The ice edge is
mainly open water. There are several areas of brash ice between the
Chukchi Peninsula and Point Hope.

FORECAST FOR THE CHUKCHI SEA (Days 1 through 5)...The incoming low
pressure system will bring northeasterly winds to the remaining ice
in the navigational waters around Alaska, mainly moving ice from
west to east 10 to 20 nm. Once the system weakens and moves into the
Beaufort on Sunday/Monday, light flow returns which will mean more
slow melt/retreat and ice generally moving with the tides and

-Beaufort Sea-

PKZ240-Cape Halkett to Flaxman Island-
PKZ245-Flaxman Island to Demarcation Point-

The main ice edge extends from near 70 10`N 146 13`W to 70 44`N 146
25`W to 70 14`N 139 1`W to 70 26`N 134 58`W and continues in
Canadian waters. The ice edge is mainly open water.

FORECAST FOR THE BEAUFORT SEA (Days 1 through 5)...Easterly winds
will increase through Saturday, and briefly westerly behind the
front/low on Sunday/Monday. Winds will become light and variable
through the middle of next week. Expect the ice edge to continue to
slowly retreat and thin over the next week without much movement
overall. It looks possible that the immedately Alaska coastline
could be ice free.


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