####018002273####
FZAK80 PAFC 251711

ICEAFC



Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters

National Weather Service - Alaska Sea Ice Program

910 AM AKDT Monday 25 September 2023



FORECAST VALID...Saturday 30 September 2023



ANALYSIS CONFIDENCE...High to moderate.



SYNOPSIS...High pressure will build over the Beaufort and Chukchi 

Seas Monday through Wednesday. A low will then move northeast across 

the Chukchi Sea and western Beaufort Sea late Wednesday through 

Saturday.



-BEAUFORT SEA-



PKZ505-Central US Arctic Offshore-



The main ice edge in the Beaufort Sea extends from 75 38'N 157 2'W 

to 73 50'N 144 28'W to 74 9'N 141 14'W and continues east in 

Canadian waters. The ice edge is open water.



From land-based points in Alaska, the main ice edge in the Beaufort 

Sea extends from 245 nm north of Point Barrow to 215 nm north of 

Prudhoe Bay to 225 nm north of Demarcation Point and continues east 

in Canadian waters. The ice edge is open water.



FORECAST FOR THE BEAUFORT SEA (DAYS 1 through 5)...Forecast 

confidence is moderate. Winds will shift from light and variable to 

moderate southerly Wednesday through Saturday. Expect new sea ice to 

continue forming within and near the ice pack, though the overall 

ice edge will likely not change significantly.



-CHUKCHI SEA-



PKZ500-Western US Arctic Offshore-



The main ice edge in the Chukchi Sea extends from 75 38'N 157 2'W to 

77 14'N 173 31'W and continues west in Russian waters. There is an 

isolated area of brash ice near 73N 164 24'W. The ice edge is open 

water.



From land-based points in Alaska, the main ice edge in the Chukchi 

Sea extends from 245 nm north of Point Barrow to 435 nm northwest of 

Point Barrow and continues in Russian waters. There is an isolated 

area of brash ice near 190 nm northwest of Point Barrow. The ice 

edge is open water.



FORECAST FOR THE CHUKCHI SEA (DAYS 1 through 5)...Forecast 

confidence is moderate. Winds will shift from light and variable to 

moderate southerly Wednesday through Saturday. Expect new sea ice to 

continue forming within and near the ice pack, though the overall 

ice edge will likely not change significantly.



&& 

Schreck