National Weather Service United States Department of Commerce

Becoming Partly Sunny Today

Skies will gradually become partly sunny today. It will become very windy and colder Sunday with northwest winds of 20 to 30 mph and gusts of 40 to 55 mph (highest near the Lake Michigan shoreline). Scattered snow showers are also expected Sunday with a dusting of snow accumulation possible. Temperatures on Sunday will remain fairly steady or fall slowly through the 30s. Read More >

 

FZUS53 KGRR 301506
NSHGRR

Experimental Tabular Nearshore Marine Forecast for Michigan
National Weather Service Grand Rapids MI
1106 AM EDT Fri Oct 30 2020

Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.SYNOPSIS...

LMZ849-302000-
Pentwater to Manistee MI-
1106 AM EDT Fri Oct 30 2020

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE
SUNDAY NIGHT...

.This Afternoon...
Weather.............Mostly cloudy.
Sfc winds...........Northwest 10 to 15 knots.
100-ft winds........Northwest 15 to 20 knots.
Sig waves...........2 to 4 feet subsiding to 1 to 3 feet late in
                              the day.

.TONIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds becoming southeast 10
                              to 15 knots after midnight.
100-ft winds........Light and variable winds becoming southeast 15
                              to 20 knots after midnight.
Sig waves...........1 to 3 feet.

.SATURDAY...
Weather.............Mostly sunny.
Sfc winds...........South to 30 knots increasing to 35 knot gales
                              late in the day.
100-ft winds........South gales to 35 knots increasing to 45 knots
                              late in the day.
Sig waves...........2 to 4 feet building to 4 to 6 feet.
Ocnl waves..........Around 8 feet.

.SATURDAY NIGHT...
Weather.............Rain likely, then mostly cloudy with chance of
                              showers toward daybreak.
Sfc winds...........Southwest gales to 35 knots becoming west at 35
                              knots toward daybreak.
100-ft winds........Southwest gales to 45 knots becoming west at 45
                              knots toward daybreak.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.


.FORECAST DAYS 3 THROUGH 5...

.SUNDAY...Windy. Northwest winds to 30 knots. Waves 6 to 9 feet.
.MONDAY...West winds 15 to 20 knots. Waves 3 to 5 feet.
.TUESDAY...Southwest winds 10 to 15 knots. Waves 2 to 4 feet.

$$

LMZ848-302000-
Whitehall to Pentwater MI-
1106 AM EDT Fri Oct 30 2020

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE
SUNDAY NIGHT...

.This Afternoon...
Weather.............Mostly cloudy.
Sfc winds...........North 10 to 15 knots.
100-ft winds........North 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.

.TONIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds becoming southeast 10
                              to 15 knots after midnight.
100-ft winds........Light and variable winds becoming southeast 15
                              to 20 knots after midnight.
Sig waves...........1 to 3 feet.

.SATURDAY...
Weather.............Mostly sunny.
Sfc winds...........South to 30 knots increasing to 35 knot gales
                              late in the day.
100-ft winds........South gales to 35 knots increasing to 45 knots
                              late in the day.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.

.SATURDAY NIGHT...
Weather.............Rain likely, then mostly cloudy with chance of
                              showers toward daybreak.
Sfc winds...........Southwest gales to 40 knots becoming northwest
                              at 35 knots toward daybreak.
100-ft winds........Southwest storm force winds to 50 knots
                              becoming northwest gales to 45 knots toward
                              daybreak.
Sig waves...........6 to 9 feet building to 8 to 12 feet after
                              midnight.
Ocnl waves..........Around 11 feet building to around 13 feet after
                              midnight.


.FORECAST DAYS 3 THROUGH 5...

.SUNDAY...Windy. Northwest winds to 30 knots. Waves 6 to 9 feet.
.MONDAY...West winds 15 to 20 knots. Waves 3 to 5 feet.
.TUESDAY...Southwest winds 10 to 15 knots. Waves 2 to 4 feet.

$$

LMZ847-302000-
Grand Haven to Whitehall MI-
1106 AM EDT Fri Oct 30 2020

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE
SUNDAY NIGHT...

.This Afternoon...
Weather.............Mostly cloudy.
Sfc winds...........North 5 to 10 knots.
100-ft winds........North 10 to 15 knots.
Sig waves...........2 to 4 feet.

.TONIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds becoming southeast 10
                              to 15 knots after midnight.
100-ft winds........Light and variable winds becoming southeast 15
                              to 20 knots after midnight.
Sig waves...........1 to 3 feet.

.SATURDAY...
Weather.............Mostly sunny.
Sfc winds...........South 15 to 20 knots increasing to 30 knots.
100-ft winds........South 20 to 25 knots increasing to 35 knot
                              gales.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.

.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of rain, then mostly
                              cloudy with showers likely after midnight.
Sfc winds...........Southwest gales to 35 knots becoming northwest
                              at 35 knots toward daybreak.
100-ft winds........Southwest gales to 45 knots becoming northwest
                              at 45 knots toward daybreak.
Sig waves...........6 to 9 feet building to 8 to 12 feet after
                              midnight.
Ocnl waves..........Around 12 feet building to around 14 feet after
                              midnight.


.FORECAST DAYS 3 THROUGH 5...

.SUNDAY...Windy. Northwest winds to 30 knots. Waves 6 to 9 feet.
.MONDAY...West winds 15 to 20 knots. Waves 3 to 5 feet.
.TUESDAY...Southwest winds 10 to 15 knots. Waves 2 to 4 feet.

$$

LMZ846-302000-
Holland to Grand Haven MI-
1106 AM EDT Fri Oct 30 2020

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE
SUNDAY NIGHT...

.This Afternoon...
Weather.............Mostly cloudy.
Sfc winds...........North 5 to 10 knots.
100-ft winds........North 10 to 15 knots.
Sig waves...........2 to 4 feet.

.TONIGHT...
Weather.............Mostly clear.
Sfc winds...........Northeast 5 to 10 knots becoming southeast 10
                              to 15 knots after midnight.
100-ft winds........Northeast 10 to 15 knots becoming southeast 15
                              to 20 knots after midnight.
Sig waves...........1 to 3 feet.

.SATURDAY...
Weather.............Sunny.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.

.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of rain, then showers
                              likely toward daybreak.
Sfc winds...........Southwest gales to 35 knots becoming west at 35
                              knots toward daybreak.
100-ft winds........Southwest gales to 45 knots becoming west at 45
                              knots toward daybreak.
Sig waves...........6 to 9 feet building to 8 to 12 feet toward
                              daybreak.
Ocnl waves..........Around 11 feet building to around 14 feet
                              toward daybreak.


.FORECAST DAYS 3 THROUGH 5...

.SUNDAY...Windy. Northwest winds to 30 knots. Waves 6 to 9 feet.
.MONDAY...West winds 15 to 20 knots. Waves 3 to 5 feet.
.TUESDAY...Southwest winds 10 to 15 knots. Waves 2 to 4 feet.

$$

LMZ845-302000-
South Haven to Holland MI-
1106 AM EDT Fri Oct 30 2020

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE
SUNDAY NIGHT...

.This Afternoon...
Weather.............Mostly cloudy.
Sfc winds...........North 5 to 10 knots.
100-ft winds........North 10 to 15 knots.
Sig waves...........2 to 4 feet.

.TONIGHT...
Weather.............Mostly clear.
Sfc winds...........Northeast 5 to 10 knots becoming southeast 10
                              to 15 knots after midnight.
100-ft winds........Northeast 10 to 15 knots becoming southeast 15
                              to 20 knots after midnight.
Sig waves...........2 to 4 feet.

.SATURDAY...
Weather.............Sunny.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet.
Ocnl waves..........Around 6 feet.

.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of rain, then mostly
                              cloudy with chance of showers toward daybreak.
Sfc winds...........South to 30 knots becoming southwest gales to
                              35 knots late, then becoming west at 35 knots
                              toward daybreak.
100-ft winds........South gales to 35 knots becoming southwest at
                              45 knots late, then becoming west gales to 45
                              knots toward daybreak.
Sig waves...........5 to 7 feet building to 6 to 9 feet toward
                              daybreak.
Ocnl waves..........Around 9 feet building to around 12 feet toward
                              daybreak.


.FORECAST DAYS 3 THROUGH 5...

.SUNDAY...Windy. Northwest winds to 30 knots. Waves 6 to 9 feet.
.MONDAY...West winds 15 to 20 knots. Waves 3 to 5 feet.
.TUESDAY...Southwest winds 10 to 15 knots. Waves 2 to 4 feet.

$$

LMZ844-302000-
St Joseph to South Haven MI-
1106 AM EDT Fri Oct 30 2020

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE
SUNDAY NIGHT...

.This Afternoon...
Weather.............Mostly cloudy.
Sfc winds...........Northeast 10 to 15 knots through early
                              afternoon becoming light and variable, then
                              becoming north 5 to 10 knots late in the day.
100-ft winds........Northeast 15 to 20 knots through early
                              afternoon becoming light and variable, then
                              becoming north 10 to 15 knots late in the day.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.

.TONIGHT...
Weather.............Mostly clear.
Sfc winds...........Light and variable winds becoming southeast 10
                              to 15 knots after midnight.
100-ft winds........Light and variable winds becoming southeast 15
                              to 20 knots after midnight.
Sig waves...........2 to 4 feet.

.SATURDAY...
Weather.............Sunny.
Sfc winds...........South 15 to 20 knots increasing to 20 to 25
                              knots late in the day.
100-ft winds........South 20 to 25 knots increasing to 30 knots
                              late in the day.
Sig waves...........2 to 4 feet building to 3 to 5 feet.
Ocnl waves..........Around 5 feet.

.SATURDAY NIGHT...
Weather.............Partly cloudy. mostly cloudy with chance of
                              showers.
Sfc winds...........South to 30 knots becoming southwest gales to
                              35 knots late, then becoming west at 35 knots
                              toward daybreak.
100-ft winds........South gales to 35 knots becoming southwest at
                              45 knots late, then becoming west gales to 45
                              knots toward daybreak.
Sig waves...........5 to 7 feet building to 6 to 9 feet toward
                              daybreak.
Ocnl waves..........Around 8 feet building to around 11 feet toward
                              daybreak.


.FORECAST DAYS 3 THROUGH 5...

.SUNDAY...Windy. Northwest winds to 30 knots. Waves 6 to 9 feet.
.MONDAY...West winds 15 to 20 knots. Waves 3 to 5 feet.
.TUESDAY...Southwest winds 10 to 15 knots. Waves 2 to 4 feet.

$$

 

Occasional waves will only be displayed when values meet or exceed 5 feet.

 

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