####018002062####
FZAK80 PAFC 112030

ICEAFC



Sea Ice Forecast for Western and Arctic Alaskan Coastal Waters

National Weather Service - Alaska Sea Ice Program

1230 PM AKDT Monday 11 September 2023



FORECAST VALID...Saturday 16 September 2023



ANALYSIS CONFIDENCE...Moderate to high.



SYNOPSIS...A low pressure forms over the north slope Wednesday and 

moves northward in the Beaufort. Another low pressure may form in 

the same location on Friday.



 

-BEAUFORT SEA-



PKZ505-Central US Arctic Offshore-



The main ice edge in the Beaufort Sea extends from 73 11'N 135 21'W 

to 73 48'N 140 38'W to 74 41'N 147 31'W to 76 55'N 150 1'W.



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

Sea extends from 235 nm NE of Kaktovik to 220 nm N of Kaktovik to 

250 nm N of Oliktok Point to 370 nm N of Oliktok Point. The ice edge 

is open water.



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

confidence is moderate. Winds from the east will continue to push 

ice into the eastern Beaufort. Winds are then expected to shift and 

flow around the low pressure starting on Wednesday. Expect retreat 

and melt to continue.





-CHUKCHI SEA-



PKZ500-Western US Arctic Offshore-



The main ice edge in the Chukchi Sea extends from 76 6'N 158 9'W to 

75 32'N 176 42'W to 74 22'N 178 37'W to 72 56'N 160 11'W to 71 58'N 

176 5'W to 69 9'N 175 0'W. The ice edge is open water.



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

Sea extends from 300 nm N of Pt Barrow to 400 nm NW of Pt Barrow to 

400 nm W/NW of Pt Barrow to 110 nm NW of Pt Barrow to 350 nm W of Pt 

Barrow to 180 nm W of Pt Hope. The ice edge is open water.



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

confidence is moderate. Moderate winds from the north will shift 

from the south and east Wednesday. The sea ice edge may expand 

Tuesday, before retreating once again Wednesday and into the 

weekend. Expect overall retreat of around 20 nm.



&& 

Tinker