Marine forecast
Sitkinak to Castle Cape, AK
- current wind
- 0 kt
- Gusts
- 4 kt
- Air
- 46°F
- Water
- 50°F
- 72-hr peak
- 36 kt
Observed Tue 10:54 AM | PKZ750
- Gusts now
- 4 kt
- Air
- 46°F
- Water
- 50°F
- 72-hr peak
- 36 kt
- Peak seas
- 14 ft
In brief
At 10:54 am AKDT on Oct 13, 2026, NDBC station ALIA2 (Alitak, AK, 71 miles away) measured wind at 0 kt, gusting to 4 kt. The NWS forecast for Sitkinak to Castle Cape, AK issued at 3:58 am AKDT on Oct 13, 2026 reads, for today: “Variable wind 10 kt. Seas 3 ft.” A Gale Warning is in effect until Wed 5:00 PM.
Source: National Weather Service Anchorage Alaska forecast; NDBC observations
Wind forecast · ktPeak 36 kt
Seas forecast · ftPeak 14 ft
Marine advisory
Gale Warning in effect for Sitkinak to Castle Cape until Wed 5:00 PM.
Full text of this gale warning
Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. .TODAY...Variable wind 10 kt. Seas 3 ft. .TONIGHT...Variable wind 10 kt becoming E 25 kt after midnight. Seas 5 ft. .WED...NE wind 40 kt. Seas 13 ft. Widespread rain showers. .WED NIGHT...E wind 30 kt. Seas 14 ft. .THU...NE wind 35 kt. Seas 10 ft. .FRI THROUGH SAT...NW wind 25 kt. Seas 6 ft.
Small Craft Advisory in effect for Sitkinak to Castle Cape until Wed 5:00 AM.
Full text of this small craft advisory
Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. .TONIGHT...Variable wind 10 kt. Seas 4 ft. .TUE...Variable wind 10 kt. Seas 3 ft. .TUE NIGHT...Variable wind 10 kt becoming E 25 kt after midnight. Seas 4 ft. .WED...E wind 40 kt. Seas 10 ft. .WED NIGHT...E wind 35 kt. Seas 13 ft. .THU...N wind 35 kt. Seas 12 ft. .FRI...NW wind 25 kt. Seas 6 ft. .SAT...NW wind 20 kt. Seas 4 ft.
NWS marine forecast
| Period | Forecast |
|---|---|
| Today | Variable wind 10 kt. Seas 3 ft. |
| Tonight | Variable wind 10 kt becoming E 25 kt after midnight. Seas 5 ft. |
| Wed | NE wind 40 kt. Seas 13 ft. Widespread rain showers. |
| Wed Night | E wind 30 kt. Seas 14 ft. |
| Thu | NE wind 35 kt. Seas 10 ft. |
| Fri Through Sat | NW wind 25 kt. Seas 6 ft. |
Issued Tue 3:58 AM by Anchorage Alaska (product CWFALU).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 10:54 AM | 0 kt | 4 kt | — | 50°F |
| Tue 9:54 AM | 5 kt ESE | 6 kt | — | 50°F |
| Tue 8:54 AM | 5 kt ESE | 7 kt | — | 50°F |
| Tue 7:54 AM | 5 kt E | 6 kt | — | 50°F |
| Tue 6:54 AM | 0 kt | 2 kt | — | 50°F |
| Tue 5:54 AM | 2 kt N | 4 kt | — | 50°F |
| Tue 4:54 AM | 5 kt N | 6 kt | — | 50°F |
| Tue 3:54 AM | 0 kt | 3 kt | — | 50°F |
| Tue 2:54 AM | 4 kt E | 6 kt | — | 50°F |
| Tue 1:54 AM | 2 kt ENE | 3 kt | — | 50°F |
| Tue 12:54 AM | 3 kt E | 6 kt | — | 50°F |
| Mon 11:54 PM | 0 kt | 3 kt | — | 50°F |
Observed Tue 10:54 AM at NDBC buoy ALIA2 (Alitak, AK), 71.3 miles away.
Frequently asked questions
What is the marine forecast for Sitkinak to Castle Cape today?
Today: Variable wind 10 kt. Seas 3 ft.
Is there a small craft advisory for Sitkinak to Castle Cape?
Yes — gale warning, small craft advisory in effect until Wed 5:00 PM.
What is the water temperature at Sitkinak to Castle Cape?
The nearest buoy read 50°F (10°C) at Tue 10:54 AM. Sea surface temperature at a single buoy can differ by several degrees from the water at a beach or in a shallow bay nearby.
What do the wind speeds in knots mean?
One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.
Where does this forecast come from?
The forecast text is the National Weather Service's own marine bulletin for zone PKZ750, issued by Anchorage Alaska, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.
Forecast: NOAA/NWS product CWFALU, issued Tue 3:58 AM. Observations: NOAA National Data Buoy Center station ALIA2, read Tue 10:54 AM. Retrieved Oct 13, 11:42 AM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.