Coastal Waters Forecast for Grand Haven to Whitehall MI (LMZ847) (Text-Only)
NWS Forecast for: Grand Haven to Whitehall MI (LMZ847)
Issued by: National Weather Service Grand Rapids, MI
Last Update: 1031 PM EDT Sat Oct 18 2025




Rest Of Tonight: Southeast winds 10 to 20 knots backing northeast after midnight. A chance of showers and thunderstorms late in the evening, then rain showers and a chance of thunderstorms after midnight. Waves 1 to 3 feet.

Sunday: Northwest gales to 40 knots. Rain showers and a slight chance of thunderstorms. Waves 6 to 8 feet building to 8 to 12 feet in the late morning and afternoon.

Sunday Night: Northwest gales to 35 knots decreasing to 30 knots after midnight. Partly cloudy with a slight chance of rain showers. Waves 9 to 13 feet.

Monday: Northwest winds 15 to 20 knots backing southwest to 30 knots in the late morning and afternoon. Sunny. Waves 5 to 7 feet subsiding to 3 to 5 feet in the late morning and early afternoon, then building to 5 to 7 feet early in the afternoon.

Monday Night: South winds to 30 knots increasing to gales to 40 knots in the late evening and early morning, then veering southwest after midnight. Partly cloudy with rain showers. Waves 6 to 9 feet building to 10 to 14 feet in the late evening and overnight.

Tuesday: West gales to 45 knots becoming storm force winds to 50 knots early in the afternoon. Partly sunny with rain showers. Waves 13 to 17 feet.

Wednesday: Northwest gales to 45 knots. Rain showers likely. Waves 12 to 16 feet.

Thursday: Northwest winds to 30 knots. Mostly sunny. Waves 6 to 9 feet.







Zone Forecast: Grand Haven to Whitehall MI (LMZ847)

Visit your local NWS office at: https://www.weather.gov/grr/