Nearshore Marine Forecast
Issued by NWS Grand Rapids, MI

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FZUS53 KGRR 180913
NSHGRR

Nearshore Marine Forecast
National Weather Service Grand Rapids MI
513 AM EDT Sat Oct 18 2025

For waters within five nautical miles of shore on Lake Michigan

LMZ849-182000-
Pentwater to Manistee MI-
513 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...Southwest winds 15 to 25 knots decreasing to 10 to 15 knots
early in the afternoon. Rain showers likely and a chance of
thunderstorms in the morning, then a chance of rain showers in the
afternoon. Waves 5 to 7 feet.
.TONIGHT...South winds 10 to 20 knots backing east after midnight.
Cloudy with rain showers and a slight chance of thunderstorms. Waves
2 to 4 feet subsiding to 1 to 3 feet in the late evening and
overnight.
.SUNDAY...North winds to 30 knots backing northwest gales to
35 knots in the late morning and afternoon. Rain showers and a
slight chance of thunderstorms. Waves 4 to 6 feet building to 8 to
12 feet in the late morning and afternoon.
.SUNDAY NIGHT...Northwest gales to 35 knots decreasing to 30 knots
in the late evening and overnight. Partly cloudy. Waves 7 to 10 feet
subsiding to 5 to 7 feet after midnight.
.MONDAY...West winds 10 to 20 knots backing southwest 15 to 25 knots
in the late morning and afternoon. Mostly sunny. Waves 2 to 4 feet
building to 5 to 7 feet early in the afternoon.
.TUESDAY...West winds to 30 knots increasing to gales to 35 knots in
the late morning and afternoon. Rain showers. Waves 8 to 12 feet.
.WEDNESDAY...Northwest winds to 30 knots. Mostly cloudy with a
chance of rain showers. Waves 6 to 9 feet.

$$

LMZ848-182000-
Whitehall to Pentwater MI-
513 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...Southwest winds 15 to 25 knots. Rain showers likely and a
chance of thunderstorms in the morning, then a slight chance of rain
showers in the afternoon. Waves 6 to 8 feet.
.TONIGHT...South winds 10 to 20 knots backing east after midnight.
Rain showers and a slight chance of thunderstorms. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight.
.SUNDAY...North winds to 30 knots becoming northwest gales to
40 knots in the late morning and afternoon. Rain showers. Waves 4 to
6 feet building to 9 to 13 feet in the late morning and afternoon.
.SUNDAY NIGHT...Northwest gales to 35 knots decreasing to 30 knots
in the late evening and overnight. Partly cloudy. Waves 8 to 12 feet
subsiding to 6 to 8 feet after midnight.
.MONDAY...West winds 15 to 20 knots backing southwest to 30 knots in
the late morning and afternoon. Mostly sunny. Waves 3 to 5 feet
building to 6 to 9 feet early in the afternoon.
.TUESDAY...West gales to 40 knots. Mostly cloudy with rain showers.
Waves 10 to 14 feet.
.WEDNESDAY...Northwest gales to 35 knots decreasing to 30 knots in
the late morning and afternoon. Partly sunny with a chance of rain
showers. Waves 7 to 11 feet.

$$

LMZ847-182000-
Grand Haven to Whitehall MI-
513 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...Southwest winds 15 to 25 knots. Rain showers and a chance
of thunderstorms in the morning, then a chance of rain showers and a
slight chance of thunderstorms in the afternoon. Waves 6 to 8 feet.
.TONIGHT...South winds 10 to 20 knots backing east after midnight.
Rain showers and a slight chance of thunderstorms. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight.
.SUNDAY...North winds to 30 knots becoming northwest gales to
40 knots in the late morning and afternoon. Rain showers. Waves 3 to
5 feet building to 9 to 13 feet in the late morning and afternoon.
.SUNDAY NIGHT...Northwest gales to 35 knots decreasing to 30 knots
in the late evening and overnight. Partly cloudy with rain showers
likely. Waves 9 to 13 feet.
.MONDAY...West winds 15 to 20 knots backing southwest to 30 knots in
the late morning and afternoon. Sunny. Waves 4 to 6 feet building to
6 to 9 feet early in the afternoon.
.TUESDAY...West gales to 40 knots. Rain showers. Waves 10 to
14 feet.
.WEDNESDAY...Northwest gales to 35 knots decreasing to 30 knots in
the late morning and afternoon. Partly sunny with a chance of rain
showers. Waves 7 to 11 feet.

$$

LMZ846-182000-
Holland to Grand Haven MI-
513 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...Southwest winds 15 to 25 knots. Rain showers and a chance
of thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. Waves 5 to 7 feet.
.TONIGHT...South winds 10 to 20 knots. Rain showers and a slight
chance of thunderstorms. Waves 2 to 4 feet subsiding to 1 to 2 feet
in the late evening and overnight.
.SUNDAY...Northwest winds to 30 knots increasing to gales to
40 knots in the late morning and afternoon. Rain showers. Waves 3 to
5 feet building to 10 to 14 feet in the late morning and afternoon.
.SUNDAY NIGHT...Northwest gales to 35 knots decreasing to 20 to
25 knots after midnight. Partly cloudy with rain showers likely.
Waves 10 to 14 feet subsiding to 7 to 10 feet after midnight.
.MONDAY...West winds 15 to 25 knots backing southwest in the late
morning and afternoon. Sunny. Waves 5 to 7 feet.
.TUESDAY...West gales to 40 knots. Rain showers. Waves 11 to
15 feet.
.WEDNESDAY...Northwest winds to 30 knots. Partly sunny with a chance
of rain showers. Waves 8 to 12 feet.

$$

LMZ845-182000-
South Haven to Holland MI-
513 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...Southwest winds 15 to 25 knots. Rain showers and a chance
of thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. Waves 3 to 5 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest after
midnight. Rain showers and a slight chance of thunderstorms. Waves
2 to 3 feet.
.SUNDAY...Northwest winds to 30 knots increasing to gales to
40 knots in the late morning and afternoon. Rain showers. Waves 4 to
6 feet building to 12 to 16 feet in the late morning and afternoon.
.SUNDAY NIGHT...Northwest gales to 35 knots decreasing to 20 to
25 knots after midnight. Partly cloudy with rain showers likely.
Waves 11 to 15 feet subsiding to 7 to 10 feet after midnight.
.MONDAY...West winds 15 to 25 knots backing southwest in the late
morning and afternoon. Sunny. Waves 5 to 7 feet subsiding to 3 to
5 feet in the late morning and afternoon.
.TUESDAY...West gales to 35 knots. Rain showers. Waves 10 to
14 feet.
.WEDNESDAY...Northwest gales to 35 knots decreasing to 30 knots in
the late morning and afternoon. Partly sunny with a chance of rain
showers. Waves 9 to 13 feet subsiding to 6 to 9 feet early in the
afternoon.

$$

LMZ844-182000-
St Joseph to South Haven MI-
513 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...Southwest winds 15 to 25 knots. Rain showers likely and a
chance of thunderstorms. Waves 2 to 4 feet.
.TONIGHT...South winds 10 to 20 knots veering west after midnight.
Rain showers and a chance of thunderstorms. Waves 1 to 2 feet.
.SUNDAY...Northwest gales to 40 knots. Rain showers. Waves 5 to
7 feet building to 13 to 17 feet in the late morning and afternoon.
.SUNDAY NIGHT...Northwest gales to 35 knots decreasing to 20 to
25 knots after midnight. Partly cloudy with rain showers likely.
Waves 12 to 16 feet subsiding to 7 to 10 feet after midnight.
.MONDAY...West winds 15 to 25 knots backing southwest in the late
morning and afternoon. Sunny. Waves 5 to 7 feet subsiding to 3 to
5 feet in the late morning and afternoon.
.TUESDAY...West gales to 35 knots. Partly sunny with rain showers
likely. Waves 8 to 12 feet.
.WEDNESDAY...Northwest gales to 35 knots decreasing to 30 knots in
the late morning and afternoon. Partly sunny with a chance of rain
showers. Waves 8 to 12 feet.

$$