Marine forecast
Whitehall to Pentwater, MI
- current wind
- 6 kt W
- Gusts
- 10 kt
- Seas
- 2.6 ft
- Period
- 5 sec
- Air
- 62°F
Observed Tue 2:54 PM | LMZ848
- Gusts now
- 10 kt
- Seas now
- 2.6 ft · 5 sec
- Air
- 62°F
- 72-hr peak
- 30 kt
In brief
At 2:54 pm EDT on Oct 13, 2026, NDBC station LDTM4 (Ludington, MI, 24 miles away) measured wind from the W at 6 kt, gusting to 10 kt; buoy 45210 measured seas of 2.6 ft. The NWS forecast for Whitehall to Pentwater, MI issued at 2:11 pm EDT on Oct 13, 2026 reads, for through early evening: “Northwest winds 10 to 20 knots. Mostly sunny.”
Source: National Weather Service Grand Rapids MI forecast; NDBC observations
Wind forecast · ktPeak 30 kt
NWS marine forecast
| Period | Forecast |
|---|---|
| Through Early Evening | Northwest winds 10 to 20 knots. Mostly sunny. Waves 3 to 5 feet. |
| Tonight | North winds 5 to 10 knots. Partly cloudy. Waves 2 to 4 feet. |
| Wednesday | North winds 15 to 25 knots. Mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet early in the afternoon. |
| Wednesday Night | Northeast winds 15 to 25 knots veering east 10 to 15 knots after midnight. Mostly cloudy. Waves 2 to 4 feet. |
| Thursday | East winds 10 to 15 knots. Cloudy with a slight chance of rain showers. Waves around 1 foot. |
| Thursday Night | East winds 5 to 10 knots backing north 10 to 20 knots in the late evening and early morning, then becoming northwest gales to 40 knots after midnight. Rain showers likely. Waves 1 to 3 feet building to 5 to 7 feet after midnight. |
| Friday | Northwest gales to 45 knots increasing to storm force winds to 50 knots early in the afternoon. Partly sunny with a chance of rain showers. Waves 13 to 17 feet. |
| Saturday | Northwest winds 15 to 25 knots backing west in the late morning and afternoon. Sunny. Waves 6 to 8 feet subsiding to 3 to 5 feet in the late morning and afternoon. |
| Sunday | Southwest gales to 35 knots. Sunny. Waves 8 to 12 feet. |
Issued Tue 2:11 PM by Grand Rapids MI (product NSHGRR).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 2:54 PM | 6 kt W | 10 kt | — | — |
| Tue 1:54 PM | 7 kt W | 12 kt | — | — |
| Tue 12:54 PM | 7 kt W | 13 kt | — | — |
| Tue 11:54 AM | 6 kt W | 12 kt | — | — |
| Tue 10:54 AM | 6 kt WNW | 12 kt | — | — |
| Tue 9:54 AM | 6 kt W | 11 kt | — | — |
| Tue 8:54 AM | 6 kt W | 9 kt | — | — |
| Tue 7:54 AM | 11 kt SSW | 15 kt | — | — |
| Tue 6:54 AM | 8 kt SSW | 15 kt | — | — |
| Tue 5:54 AM | 13 kt SSW | 18 kt | — | — |
| Tue 4:54 AM | 12 kt SSW | 18 kt | — | — |
| Tue 3:54 AM | 12 kt SSW | 17 kt | — | — |
Observed Tue 2:54 PM at NDBC buoy LDTM4 (Ludington, MI), 24.2 miles away. Seas from buoy 45210 (Rawley Point East, WI (269)), 40.4 miles away, at Tue 2:56 PM.
Frequently asked questions
What is the marine forecast for Whitehall to Pentwater today?
Through Early Evening: Northwest winds 10 to 20 knots. Mostly sunny. Waves 3 to 5 feet.
Is there a small craft advisory for Whitehall to Pentwater?
No advisories, warnings or watches are in effect for NWS zone LMZ848 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 Whitehall to Pentwater right now?
Seas are running 2.6 ft at a 5-second period, measured at NDBC buoy LDTM4 Tue 2:54 PM, 24.2 miles from this zone.
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 LMZ848, issued by Grand Rapids 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 NSHGRR, issued Tue 2:11 PM. Observations: NOAA National Data Buoy Center station LDTM4, read Tue 2:54 PM. Retrieved Oct 13, 3:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.