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Anchorage, AK Local Forecast Office

33NM NNE Shemya AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 8 °C
WSW 30km/h
2m
Tonight
Low: 7 °C
W 35km/h
2m
Independence Day
High: 8 °C
NNW 25km/h
1m
Friday Night
Low: 7 °C
NW 15km/h
1m
Saturday
High: 9 °C
W 10km/h
1m
Saturday Night
Low: 6 °C
E 10km/h
1m
Sunday
High: 9 °C
ENE 15km/h
1m
Sunday Night
Low: 7 °C
ENE 20km/h
1m
Monday
High: 9 °C
ENE 30km/h
1m

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:38 pm AKDT Jul 3, 2025
Forecast Valid: 3pm AKDT Jul 3, 2025-6pm AKDT Jul 9, 2025

View Nearby Observations

Detailed Forecast

Synopsis: A 1003 mb low 140 nm S of Sitkinak Island remains nearly stationary through tonight and dissipates Fri morning. A 1000 mb complex low 230 nm NE of Shemya moves to 110 nm N of Unalaska at 1005 mb by Sat afternoon. A 998 mb Kamchatka low moves to 260 nm SW of Attu Island at 999 mb Sat afternoon.

This Afternoon

WSW wind around 30 km/h. A chance of showers. Seas around 2 m.

Tonight

W wind 25 to 35 km/h. Scattered showers before 10pm, then isolated showers after 1am. Areas of fog between 10pm and 4am. Seas around 2 m.

Independence Day

NNW wind 20 to 25 km/h. Areas of fog between 7am and 10am. Seas around 1 m.

Friday Night

NW wind 10 to 15 km/h. Mostly cloudy. Seas around 1 m.

Saturday

W wind 5 to 10 km/h. Mostly cloudy. Seas around 1 m.

Saturday Night

E wind around 10 km/h. Mostly cloudy. Seas around 1 m.

Sunday

S wind 10 to 15 km/h becoming ENE in the morning. Winds could gust as high as 30 km/h. Mostly cloudy. Seas around 1 m.

Sunday Night

ENE wind around 20 km/h, with gusts as high as 60 km/h. Mostly cloudy. Seas around 1 m.

Monday

ENE wind 25 to 30 km/h, with gusts as high as 50 km/h. A chance of showers. Seas around 1 m.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.