Marine forecast
Grand Marais to Whitefish Point, MI
- current wind
- 13 kt NW
- Gusts
- 15 kt
- Seas
- 1.3 ft
- Period
- 5 sec
- 72-hr peak
- 35 kt
Observed Tue 1:50 PM | LSZ251
- Gusts now
- 15 kt
- Seas now
- 1.3 ft · 5 sec
- 72-hr peak
- 35 kt
- Peak seas
- 20 ft
In brief
At 1:50 pm CDT on Oct 13, 2026, NDBC station GRMM4 (Grand Marais, MI, 25 miles away) measured wind from the NW at 13 kt, gusting to 15 kt; buoy 4403587 measured seas of 1.3 ft. The NWS forecast for Grand Marais to Whitefish Point, MI issued at 10:01 am CDT on Oct 13, 2026 reads, for rest of today: “Northeast wind less than 10 knots backing northwest 10 to 15 knots late. Cloudy.”
Source: National Weather Service Marquette MI forecast; NDBC observations
Wind forecast · ktPeak 35 kt
Seas forecast · ftPeak 20 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| Rest Of Today | Northeast wind less than 10 knots backing northwest 10 to 15 knots late. Cloudy. A slight chance of showers by late morning. Waves 2 to 3 feet subsiding to 1 to 2 feet. |
| Tonight | Northwest wind 15 to 20 knots. Cloudy. Waves building to 3 to 5 feet occasionally to 7 feet. |
| Wednesday | Northwest wind 15 to 20 knots. Cloudy. Waves 3 to 5 feet occasionally to 7 feet. |
| Wednesday Night | North wind 10 to 20 knots veering east less than 10 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves subsiding to 1 to 2 feet. |
Issued Tue 10:01 AM by Marquette MI (product NSHMQT).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 1:50 PM | 13 kt NW | 15 kt | — | — |
| Tue 12:50 PM | 12 kt N | 15 kt | — | — |
| Tue 11:50 AM | 12 kt N | 14 kt | — | — |
| Tue 10:50 AM | 4 kt E | 5 kt | — | — |
| Tue 9:40 AM | 5 kt ESE | 6 kt | — | — |
| Tue 8:50 AM | 4 kt ESE | 6 kt | — | — |
| Tue 7:50 AM | 9 kt E | 11 kt | — | — |
| Tue 6:50 AM | 13 kt E | 14 kt | — | — |
| Tue 4:50 AM | 10 kt E | 13 kt | — | — |
| Mon 10:40 PM | 16 kt E | 17 kt | — | — |
| Mon 9:50 PM | 10 kt ESE | 13 kt | — | — |
| Mon 8:50 PM | 16 kt E | 20 kt | — | — |
Observed Tue 1:50 PM at NDBC buoy GRMM4 (Grand Marais, MI), 25.0 miles away. Seas from buoy 4403587 (Whitefish Bay), 35.7 miles away, at Tue 1:20 PM.
Frequently asked questions
What is the marine forecast for Grand Marais to Whitefish Point today?
Rest Of Today: Northeast wind less than 10 knots backing northwest 10 to 15 knots late. Cloudy. A slight chance of showers by late morning. Waves 2 to 3 feet subsiding to 1 to 2 feet.
Is there a small craft advisory for Grand Marais to Whitefish Point?
No advisories, warnings or watches are in effect for NWS zone LSZ251 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.
How high are the waves at Grand Marais to Whitefish Point right now?
Seas are running 1.3 ft at a 5-second period, measured at NDBC buoy GRMM4 Tue 1:50 PM, 25.0 miles from this zone. The forecast peaks at 20.0 ft Fri 1 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 LSZ251, issued by Marquette MI, 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 NSHMQT, issued Tue 10:01 AM. Observations: NOAA National Data Buoy Center station GRMM4, read Tue 1:50 PM. Retrieved Oct 13, 2:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.