631 

FZUS53 KDLH 161107
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
607 AM CDT Thu Apr 16 2026

For waters within five nautical miles of shore on Lake Superior.

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.

LSZ140-161600-
Grand Portage to Grand Marais MN-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Southwest wind 5 knots becoming south late in the
afternoon. Areas of dense freezing fog in the morning. Areas of
dense fog through the day. Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Patchy dense fog in the
evening, then widespread dense fog after midnight. Slight chance
of rain after midnight. Waves 1 to 2 feet.
.FRIDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots
early in the morning. Areas of dense fog in the morning. Patchy
fog in the afternoon. Rain and chance of thunderstorms in the
afternoon. Waves 1 to 3 feet.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
20 knots increasing to 30 knots. Rain and chance of thunderstorms
in the evening, then rain likely after midnight. Waves 2 to
4 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ141-161600-
Grand Marais to Taconite Harbor MN-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Variable winds 10 knots or less becoming south 5 knots
in the late morning and early afternoon, then becoming east late
in the afternoon. Areas of dense fog in the morning, then patchy
dense fog in the afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Patchy dense fog in the
evening, then widespread dense fog after midnight. Slight chance
of rain after midnight. Waves 1 to 2 feet.
.FRIDAY...Northeast wind 5 to 10 knots becoming north late in the
afternoon. Widespread dense fog in the morning, then patchy fog
in the afternoon. Rain and chance of thunderstorms in the
afternoon. Waves 1 to 3 feet.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
20 knots increasing to 30 knots in the late evening and
overnight. Rain and chance of thunderstorms in the evening. Waves
1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ142-161600-
Taconite Harbor to Silver Bay Harbor MN-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Variable winds 10 knots or less becoming southeast
5 knots in the late morning and early afternoon, then becoming
east late in the afternoon. Areas of dense freezing fog early in
the morning. Areas of dense fog in the morning, then patchy dense
fog in the afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots. Patchy dense fog in the
evening, then widespread dense fog after midnight. Waves 1 to
3 feet.
.FRIDAY...Northeast wind 5 to 10 knots. Areas of dense fog in the
morning. Patchy fog in the afternoon. Rain and chance of
thunderstorms in the afternoon. Waves 1 to 3 feet.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
25 knots increasing to 30 knots in the late evening and early
morning, then decreasing to 25 knots early in the morning. Rain
and chance of thunderstorms in the evening. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ143-161600-
Silver Bay Harbor to Two Harbors MN-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Variable winds 10 knots or less becoming northeast 10 to
15 knots. Areas of dense fog early in the morning. Areas of dense
freezing fog in the morning. Patchy dense fog in the late morning
and afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in
the evening. Patchy fog in the evening, then widespread dense fog
after midnight. Waves 1 to 3 feet.
.FRIDAY...Northeast wind 5 to 10 knots. Areas of dense fog in the
morning. Patchy fog in the afternoon. Rain and chance of
thunderstorms in the afternoon. Waves 1 to 3 feet.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
25 knots. Rain and chance of thunderstorms in the evening. Chance
of snow through the night. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ144-161600-
Two Harbors to Duluth MN-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Variable winds 10 knots or less becoming northeast 10 to
15 knots. Areas of dense fog early in the morning. Areas of dense
freezing fog in the morning. Patchy dense fog in the late morning
and afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in
the evening. Patchy fog in the evening. Areas of dense fog after
midnight. Waves 1 to 2 feet.
.FRIDAY...Northeast wind 5 to 10 knots becoming north 10 to
15 knots with gusts to around 20 knots late in the afternoon.
Areas of dense fog in the morning, then patchy fog in the
afternoon. Slight chance of rain in the morning, then rain and
chance of thunderstorms in the afternoon. Waves 1 to 2 feet.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
25 knots increasing to 30 knots after midnight, then decreasing
to 25 knots early in the morning. Rain and chance of
thunderstorms in the evening. Chance of snow through the night.
Waves 1 to 3 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ145-161600-
Duluth MN to Port Wing WI-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Variable winds 10 knots or less becoming northeast 10 to
15 knots in the late morning and afternoon. Areas of dense fog
early in the morning. Areas of dense freezing fog in the morning.
Patchy dense fog in the late morning and afternoon. Waves 1 foot
or less.
.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in
the evening. Patchy fog in the evening. Areas of dense fog after
midnight. Waves 1 to 3 feet.
.FRIDAY...Northeast wind 10 to 15 knots with gusts to around
20 knots becoming northwest with gusts to around 20 knots late in
the afternoon. Slight chance of rain in the morning, then rain
and chance of thunderstorms in the afternoon. Patchy fog in the
afternoon. Waves 1 to 3 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots with gusts to around
25 knots. Rain and chance of thunderstorms in the evening. Chance
of snow through the night. Waves 2 to 4 feet. A small craft
advisory may be needed.

Note...Wave height forecasts are for ice free areas.

$$

LSZ146-161600-
Port Wing to Sand Island WI-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Variable winds 10 knots or less becoming northeast 10 to
15 knots. Areas of dense fog and dense freezing fog early in the
morning, then patchy dense fog in the late morning and afternoon.
Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Patchy dense fog. Waves
1 to 3 feet.
.FRIDAY...Northeast wind 5 to 10 knots becoming northwest late in
the afternoon. Patchy fog in the afternoon. Rain and chance of
thunderstorms in the afternoon. Waves 1 to 3 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots.
Rain and chance of thunderstorms in the evening. Waves 1 to
3 feet building to 2 to 4 feet after midnight. A small craft
advisory may be needed.

Note...Wave height forecasts are for ice free areas.

$$

LSZ147-161600-
Sand Island to Bayfield WI-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Variable winds 10 knots or less becoming southeast
5 knots late in the morning, then becoming east in the afternoon.
Areas of dense fog and dense freezing fog early in the morning,
then patchy dense fog in the late morning and afternoon. Waves
1 foot or less.
.TONIGHT...East wind 5 to 10 knots. Patchy dense fog after
midnight. Waves 1 to 2 feet.
.FRIDAY...East wind 5 to 10 knots becoming northeast early in the
afternoon, then becoming west late in the afternoon. Rain and
chance of thunderstorms in the afternoon. Waves 1 to 2 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots.
Rain and chance of thunderstorms in the evening. Waves 1 to
2 feet building to 2 to 4 feet after midnight.

Note...Wave height forecasts are for ice free areas.

$$

LSZ150-161600-
Outer Apostle Islands Beyond 5 NM from Mainland-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Southeast wind 5 knots becoming east in the afternoon.
Areas of dense freezing fog early in the morning. Patchy dense
fog through the day. Waves 1 foot or less.
.TONIGHT...East wind 5 to 10 knots. Patchy dense fog in the
evening. Widespread dense fog after midnight. Waves 1 to 2 feet
building to 1 to 3 feet early in the morning.
.FRIDAY...Southeast wind 5 to 10 knots becoming northeast 10 to
15 knots early in the afternoon, then becoming west 5 to 10 knots
late in the afternoon. Areas of dense fog in the morning. Rain
and chance of thunderstorms in the afternoon. Waves 1 to 3 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots.
Rain and chance of thunderstorms in the evening. Waves 1 to
3 feet building to 2 to 4 feet after midnight.

Note...Wave height forecasts are for ice free areas.

$$

LSZ148-161600-
Oak Point to Saxon Harbor WI-
607 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...Variable winds 10 knots or less becoming east 5 to
10 knots in the late morning and afternoon. Areas of dense
freezing fog early in the morning. Patchy dense fog through the
day. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 knots becoming south with gusts to
around 20 knots early in the morning. Patchy dense fog in the
evening. Areas of dense fog after midnight. Waves 1 foot or less.
.FRIDAY...South wind 10 to 15 knots becoming southwest. Gusts up
to 20 knots. Rain and chance of thunderstorms in the afternoon.
Waves 1 to 2 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots
early in the morning. Chance of thunderstorms in the evening.
Rain through the night. Waves 1 to 3 feet.

Note...Wave height forecasts are for ice free areas.

$$

Graphical marine forecasts are available online at:
weather.gov/greatlakes

WFO DLH






341 

FZUS53 KGRB 161119
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
619 AM CDT Thu Apr 16 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-161600-
Green Bay south of line from Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI-
619 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...NE wind 5 to 10 kts veering SE early in the afternoon.
Waves 2 ft or less. Areas of dense fog.
.TONIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Areas of dense
fog in the evening, then widespread dense fog after midnight.
.FRIDAY...S wind 10 to 15 kts increasing to 15 to 25 kts early in
the afternoon. Waves 1 to 3 ft. Patchy dense fog in the morning.
. A Small Craft Advisory may be needed.
.FRIDAY NIGHT...S wind 15 to 25 kts veering W 10 to 20 kts after
midnight. Waves 1 to 3 ft. A chance of thunderstorms in the
evening. Rain showers.

$$

LMZ541-161600-
Rock Island Passage to Sturgeon Bay WI-
619 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...N wind 5 to 10 kts veering SE early in the afternoon.
Waves 2 ft or less. Areas of dense fog.
.TONIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Widespread
dense fog.
.FRIDAY...S wind 15 to 25 kts. Waves 1 to 3 ft building to 4 to
7 ft in the afternoon. Widespread dense fog in the morning. A
Small Craft Advisory may be needed.
.FRIDAY NIGHT...S wind 15 to 25 kts veering SW after midnight.
Waves 5 to 8 ft. A chance of thunderstorms in the evening. Rain
showers.

$$

LMZ542-543-161600-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
619 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...N wind 5 to 10 kts veering E early in the afternoon.
Waves 2 ft or less. A slight chance of showers and thunderstorms
in the morning. areas of dense fog.
.TONIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Widespread
dense fog.
.FRIDAY...S wind 10 to 15 kts increasing to to 30 kts in the late
morning and afternoon. Waves 2 to 4 ft building to 4 to 7 ft in
the afternoon. Widespread dense fog in the morning. . A Small
Craft Advisory may be needed.
.FRIDAY NIGHT...S wind to 30 kts veering W 15 to 25 kts after
midnight. Waves 5 to 8 ft. A chance of thunderstorms in the
evening. Rain showers.

$$

See Lake Michigan Open Lake Forecast for Saturday through Monday.

Wave height forecast is for ice free areas.







715 

FZUS53 KGRR 161158
NSHGRR

Nearshore Marine Forecast
National Weather Service Grand Rapids MI
758 AM EDT Thu Apr 16 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ849-162000-
Pentwater to Manistee MI-
758 AM EDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT FRIDAY...

.TODAY...North winds 5 to 15 knots. Rain showers likely and a slight
chance of thunderstorms in the morning, then a chance of rain
showers and a slight chance of thunderstorms in the afternoon.
Widespread dense fog in the morning. Areas of dense fog in the
afternoon. Waves 1 to 2 feet.
.TONIGHT...North winds 5 to 15 knots veering northeast in the late
evening and early morning, then veering south after midnight. Partly
cloudy. Waves 1 to 2 feet.
.FRIDAY...South winds 5 to 15 knots increasing to 15 to 20 knots
early in the afternoon. Partly sunny. Waves 2 to 3 feet.
.FRIDAY NIGHT...South winds to 30 knots. Rain showers and a chance
of thunderstorms. Waves 3 to 6 feet.
.SATURDAY...West winds to 30 knots. Partly sunny with rain showers.
Waves 5 to 7 feet.
.SUNDAY...Northwest winds to 30 knots. Mostly sunny. Waves 6 to
9 feet.
.MONDAY...Northeast winds 10 to 20 knots veering southwest in the
late morning and afternoon. Sunny. Waves 3 to 5 feet subsiding to
1 to 3 feet early in the afternoon.

$$

LMZ848-162000-
Whitehall to Pentwater MI-
758 AM EDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT FRIDAY...

.TODAY...Northwest winds 10 to 15 knots. Mostly cloudy with a chance
of showers and thunderstorms. Widespread dense fog in the morning.
Patchy dense fog in the afternoon. Waves 1 to 2 feet.
.TONIGHT...North winds 5 to 15 knots backing south after midnight.
Partly cloudy. Waves 1 to 2 feet.
.FRIDAY...South winds 10 to 20 knots. Partly sunny. Waves 1 to
3 feet.
.FRIDAY NIGHT...South winds to 30 knots. Rain showers and a chance
of thunderstorms. Waves 4 to 6 feet building to 5 to 7 feet after
midnight.
.SATURDAY...West winds to 30 knots. Partly sunny with rain showers.
Waves 6 to 8 feet.
.SUNDAY...Northwest winds to 30 knots. Mostly sunny. Waves 6 to
9 feet.
.MONDAY...East winds 15 to 20 knots veering south in the late
morning and afternoon. Sunny. Waves 2 to 4 feet.

$$

LMZ847-162000-
Grand Haven to Whitehall MI-
758 AM EDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT FRIDAY...

.TODAY...West winds 10 to 20 knots veering northwest early in the
afternoon. Mostly cloudy with a chance of showers and thunderstorms.
Patchy dense fog. Waves 1 to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots backing southwest after
midnight. Partly cloudy. Patchy dense fog. Waves 1 to 2 feet.
.FRIDAY...Southeast winds 5 to 15 knots increasing to 15 to 20 knots
early in the afternoon. Partly sunny. Waves 1 to 2 feet.
.FRIDAY NIGHT...Southeast winds 15 to 25 knots veering south to
30 knots in the late evening and overnight. Rain showers and a
chance of thunderstorms. Waves 3 to 5 feet building to 5 to 7 feet
after midnight.
.SATURDAY...West winds to 30 knots. Partly sunny with rain showers
and a slight chance of thunderstorms. Waves 5 to 7 feet.
.SUNDAY...Northwest winds to 30 knots. Mostly sunny. Waves 6 to
9 feet.
.MONDAY...East winds 10 to 15 knots veering south in the late
morning and early afternoon, then veering southwest early in the
afternoon. Sunny. Waves 1 to 3 feet.

$$

LMZ846-162000-
Holland to Grand Haven MI-
758 AM EDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT FRIDAY...

.TODAY...Southwest winds 15 to 20 knots veering northwest early in
the afternoon. Rain showers likely and a chance of thunderstorms in
the morning, then a chance of rain showers and a slight chance of
thunderstorms in the afternoon. Patchy dense fog in the morning.
Areas of dense fog in the afternoon. Waves 1 to 3 feet.
.TONIGHT...Northwest winds 10 to 15 knots backing southwest 5 to
10 knots after midnight. Partly cloudy. Waves 1 to 2 feet.
.FRIDAY...Southeast winds 10 to 20 knots. Partly sunny. Waves around
1 foot.
.FRIDAY NIGHT...South winds 15 to 25 knots increasing to 30 knots
after midnight. Rain showers and a chance of thunderstorms. Waves
1 to 3 feet building to 4 to 6 feet in the late evening and
overnight.
.SATURDAY...West winds to 30 knots. Partly sunny with rain showers
and a slight chance of thunderstorms. Waves 5 to 7 feet.
.SUNDAY...Northwest winds to 30 knots. Mostly sunny. Waves 6 to
9 feet.
.MONDAY...East winds 10 to 20 knots veering southwest early in the
afternoon. Sunny. Waves 2 to 3 feet.

$$

LMZ845-162000-
South Haven to Holland MI-
758 AM EDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT FRIDAY...

.TODAY...Southwest winds 15 to 20 knots veering northwest early in
the afternoon. Mostly cloudy with a chance of showers and
thunderstorms. Patchy fog in the morning. Areas of fog in the
afternoon. Waves 1 to 3 feet.
.TONIGHT...Northwest winds 5 to 15 knots backing southwest after
midnight. Mostly cloudy. Patchy dense fog. Waves 1 to 2 feet.
.FRIDAY...Southeast winds 5 to 15 knots. Partly sunny. Waves 1 foot
or less.
.FRIDAY NIGHT...South winds 15 to 25 knots becoming after midnight.
Rain showers and a chance of thunderstorms. Waves 2 to 4 feet.
.SATURDAY...West winds to 30 knots. Partly sunny with rain showers
and a slight chance of thunderstorms. Waves 5 to 7 feet.
.SUNDAY...Northwest winds to 30 knots. Mostly sunny. Waves 6 to
9 feet.
.MONDAY...East winds 10 to 20 knots veering southwest around
10 knots early in the afternoon. Sunny. Waves 2 to 4 feet subsiding
to 1 to 3 feet in the late morning and afternoon.

$$

LMZ844-162000-
St Joseph to South Haven MI-
758 AM EDT Thu Apr 16 2026

.TODAY...Southwest winds 15 to 20 knots veering northwest early in
the afternoon. Mostly cloudy. A chance of showers and thunderstorms
in the morning, then a slight chance of rain showers in the
afternoon. Patchy fog through the day. Waves 1 to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots backing south around
5 knots after midnight. Mostly cloudy. Patchy dense fog. Waves 1 to
2 feet.
.FRIDAY...Southeast winds 5 to 15 knots. Partly sunny. Waves 1 foot
or less.
.FRIDAY NIGHT...South winds 15 to 25 knots becoming after midnight.
Rain showers and a chance of thunderstorms. Waves 1 to 3 feet
building to 2 to 4 feet after midnight.
.SATURDAY...Southwest winds 20 to 25 knots veering west to 30 knots
in the late morning and afternoon. Partly sunny with rain showers
and a slight chance of thunderstorms. Waves 4 to 6 feet.
.SUNDAY...Northwest winds to 30 knots. Mostly sunny. Waves 6 to
8 feet.
.MONDAY...Northeast winds 10 to 20 knots veering southeast in the
late morning and early afternoon, then veering southwest early in
the afternoon. Sunny. Waves 2 to 4 feet subsiding to 1 to 2 feet
early in the afternoon.

$$