Marine forecast
Port Heiden to Nelson Lagoon (15-60 nm), AK
- current wind
- 5 kt SSE
- Gusts
- 7 kt
- Air
- 38°F
- 72-hr peak
- 35 kt
- Peak seas
- 10 ft
Observed Tue 10:42 AM | PKZ757
- Gusts now
- 7 kt
- Air
- 38°F
- 72-hr peak
- 35 kt
- Peak seas
- 10 ft
In brief
At 10:42 am AKDT on Oct 13, 2026, NDBC station CPSA2 (Cape Seniavin, AK, 20 miles away) measured wind from the SSE at 5 kt, gusting to 7 kt. The NWS forecast for Port Heiden to Nelson Lagoon (15-60 nm), AK issued at 3:58 am AKDT on Oct 13, 2026 reads, for today: “SW wind 15 kt. Seas 5 ft.” A Gale Warning is in effect until Wed 5:00 PM.
Source: National Weather Service Anchorage Alaska forecast; NDBC observations
Wind forecast · ktPeak 35 kt
Seas forecast · ftPeak 10 ft
Marine advisory
Gale Warning in effect for Port Heiden to Nelson Lagoon (15-60 nm) 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...SW wind 15 kt. Seas 5 ft. .TONIGHT...Variable wind 10 kt becoming NE 15 kt after midnight. Seas 5 ft. .WED...NE wind 25 kt increasing to 35 kt in the afternoon. Seas 6 ft building to 10 ft in the afternoon. Rain showers. .WED NIGHT...NE wind 30 kt. Seas 10 ft. .THU THROUGH FRI...NW wind 30 kt. Seas 10 ft. .SAT...NW wind 20 kt. Seas 7 ft.
NWS marine forecast
| Period | Forecast |
|---|---|
| Today | SW wind 15 kt. Seas 5 ft. |
| Tonight | Variable wind 10 kt becoming NE 15 kt after midnight. Seas 5 ft. |
| Wed | NE wind 25 kt increasing to 35 kt in the afternoon. Seas 6 ft building to 10 ft in the afternoon. Rain showers. |
| Wed Night | NE wind 30 kt. Seas 10 ft. |
| Thu Through Fri | NW wind 30 kt. Seas 10 ft. |
| Sat | NW wind 20 kt. Seas 7 ft. |
Issued Tue 3:58 AM by Anchorage Alaska (product CWFALU).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 10:42 AM | 5 kt SSE | 7 kt | — | — |
| Tue 9:52 AM | 7 kt SSE | 9 kt | — | — |
| Tue 8:52 AM | 8 kt S | 11 kt | — | — |
| Tue 7:52 AM | 10 kt S | 15 kt | — | — |
| Tue 6:52 AM | 6 kt SSW | 10 kt | — | — |
| Tue 5:52 AM | 9 kt S | 13 kt | — | — |
| Tue 4:52 AM | 11 kt SSW | 15 kt | — | — |
| Tue 3:52 AM | 9 kt S | 13 kt | — | — |
| Tue 2:52 AM | 10 kt S | 16 kt | — | — |
| Tue 1:52 AM | 7 kt S | 10 kt | — | — |
| Tue 12:52 AM | 8 kt SSW | 16 kt | — | — |
| Mon 11:52 PM | 9 kt S | 12 kt | — | — |
Observed Tue 10:42 AM at NDBC buoy CPSA2 (Cape Seniavin, AK), 20.0 miles away.
Frequently asked questions
What is the marine forecast for Port Heiden to Nelson Lagoon (15-60 nm) today?
Today: SW wind 15 kt. Seas 5 ft.
Is there a small craft advisory for Port Heiden to Nelson Lagoon (15-60 nm)?
Yes — gale warning in effect until Wed 5:00 PM.
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 PKZ757, 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 CPSA2, read Tue 10:42 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.