fzus53 kapx 180240
nshapx
expires:202605181045;;742469

nearshore marine forecast
national weather service gaylord mi
1040 pm edt sun may 17 2026

for waters within five nautical miles of shore on lakes huron...
michigan and 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.


lmz346-181045-
manistee to point betsie mi-
1040 pm edt sun may 17 2026

...small craft advisory in effect through monday evening...

.overnight...southeast wind 10 to 20 knots becoming south early
in the morning. slight chance of showers and thunderstorms. waves
2 feet or less building to 3 to 5 feet after midnight. 
.monday...south wind 10 to 20 knots. chance of showers and slight
chance of thunderstorms. waves 4 to 6 feet. 
.monday night...south wind 10 to 20 knots. chance of showers and
thunderstorms. waves 3 to 5 feet. 
.tuesday...southwest wind 15 to 25 knots. rain showers likely.
waves 4 to 7 feet. 

winds and waves higher in the vicinity of thunderstorms.

see the open lakes forecast for days 3 through 5.

$$

fzus53 kgrb 180136
nshgrb
expires:202605180400;;740349

nearshore marine forecast
national weather service green bay wi
836 pm cdt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz542-543-180400-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
836 pm cdt sun may 17 2026

...dense fog advisory in effect until 4 am cdt monday...
...small craft advisory in effect through late tuesday night...

.tonight...e wind 5 to 10 kts becoming s 15 to 25 kts in the late
evening and overnight. waves 4 to 7 ft. areas of dense fog. a
chance of showers and thunderstorms. 
.monday...s wind 15 to 25 kts. waves 4 to 7 ft. a chance of
showers and a slight chance of thunderstorms. 
.monday night...s wind 10 to 15 kts increasing to 15 to 25 kts in
the late evening and overnight. waves 4 to 7 ft. a chance of
showers in the evening. a chance of thunderstorms. rain showers
after midnight. patchy fog after midnight. 
.tuesday...s wind 15 to 25 kts veering w early in the afternoon.
waves 4 to 7 ft. a chance of showers in the morning.  

$$

fzus53 kgrr 180136
nshgrr
expires:202605180800;;740314

nearshore marine forecast
national weather service grand rapids mi
936 pm edt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz848-180800-
whitehall to pentwater mi-
936 pm edt sun may 17 2026

...small craft advisory in effect through monday evening...

.through early evening...southeast winds around 15 knots. rain
showers likely and a chance of thunderstorms. waves around 1 foot. 
.tonight...south winds 15 to 25 knots increasing to 30 knots after
midnight. mostly cloudy with a chance of showers and thunderstorms
in the evening, then partly cloudy after midnight. waves 2 to 3 feet
building to 4 to 6 feet in the late evening and overnight. 
.monday...south winds to 30 knots. rain showers likely and a chance
of thunderstorms. waves 6 to 8 feet. 
.monday night...south winds to 30 knots. rain showers and a chance
of thunderstorms. waves 5 to 7 feet. 
.tuesday...south winds to 30 knots veering southwest early in the
afternoon. rain showers and a chance of thunderstorms. waves 6 to
8 feet. 
.tuesday night...northwest winds 20 to 25 knots veering north after
midnight. partly cloudy. waves 4 to 6 feet. 
.wednesday...north winds 20 to 25 knots. mostly sunny. waves 2 to
4 feet. 
.thursday...northeast winds 5 to 10 knots backing northwest 10 to
15 knots early in the afternoon. mostly sunny. waves around 1 foot. 
.friday...east winds 10 to 15 knots backing northeast early in the
afternoon. partly sunny. waves 1 foot or less. 

$$

fzus53 kgrr 180136
nshgrr
expires:202605180800;;740318

nearshore marine forecast
national weather service grand rapids mi
936 pm edt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz844-180800-
st joseph to south haven mi-
936 pm edt sun may 17 2026

.through early evening...south winds 10 to 15 knots. mostly sunny.
waves 1 to 2 feet. 
.tonight...south winds 15 to 20 knots. partly cloudy. waves 1 to
3 feet. 
.monday...south winds 20 to 25 knots. partly sunny with a chance of
showers and thunderstorms. waves 2 to 4 feet.
.monday night...south winds 15 to 25 knots. mostly cloudy with a
chance of showers and thunderstorms. waves 2 to 4 feet. 
.tuesday...south winds 20 to 25 knots veering southwest early in the
afternoon. partly sunny with a chance of showers and thunderstorms.
waves 3 to 5 feet. 
.tuesday night...west winds 15 to 20 knots veering northwest in the
late evening and overnight. mostly cloudy. waves 3 to 5 feet. 
.wednesday...north winds around 20 knots. mostly sunny. waves 3 to
5 feet. 
.thursday...east winds 10 to 15 knots backing northeast early in the
afternoon. mostly sunny. waves 1 to 2 feet. 
.friday...east winds 10 to 15 knots backing north early in the
afternoon. mostly cloudy. waves 1 foot or less. 

$$

fzus53 kgrr 180136
nshgrr
expires:202605180800;;740317

nearshore marine forecast
national weather service grand rapids mi
936 pm edt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz845-180800-
south haven to holland mi-
936 pm edt sun may 17 2026

.through early evening...south winds 10 to 15 knots. sunny. waves
1 foot or less. 
.tonight...south winds 15 to 25 knots. partly cloudy. waves 2 to
4 feet.
.monday...south winds 20 to 25 knots. rain showers likely and a
chance of thunderstorms. waves 3 to 5 feet. 
.monday night...south winds 15 to 25 knots. mostly cloudy with a
chance of showers and thunderstorms. waves 3 to 5 feet. 
.tuesday...south winds to 30 knots veering southwest 20 to 25 knots
early in the afternoon. partly sunny with rain showers likely and a
chance of thunderstorms. waves 4 to 6 feet. 
.tuesday night...west winds 20 to 25 knots veering northwest in the
late evening and overnight. mostly cloudy. waves 3 to 5 feet. 
.wednesday...north winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.thursday...east winds 10 to 15 knots backing northeast early in the
afternoon. mostly sunny. waves around 1 foot. 
.friday...east winds 10 to 15 knots backing north early in the
afternoon. mostly cloudy. waves 1 foot or less. 

$$

fzus53 kgrr 180136
nshgrr
expires:202605180800;;740316

nearshore marine forecast
national weather service grand rapids mi
936 pm edt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz846-180800-
holland to grand haven mi-
936 pm edt sun may 17 2026

...small craft advisory in effect through monday evening...

.through early evening...south winds 10 to 15 knots. mostly sunny
with a slight chance of showers and thunderstorms. waves 1 foot or
less. 
.tonight...south winds 15 to 25 knots. partly cloudy. waves 1 to
3 feet building to 3 to 5 feet in the late evening and overnight. 
.monday...south winds to 30 knots. rain showers likely and a chance
of thunderstorms. waves 4 to 6 feet. 
.monday night...south winds 20 to 25 knots. rain showers likely and
a chance of thunderstorms. waves 4 to 6 feet. 
.tuesday...south winds to 30 knots veering southwest early in the
afternoon. rain showers likely and a chance of thunderstorms. waves
5 to 7 feet. 
.tuesday night...northwest winds 20 to 25 knots becoming around
20 knots after midnight. mostly cloudy. waves 3 to 5 feet. 
.wednesday...north winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.thursday...northeast winds 10 to 15 knots. mostly sunny. waves
1 foot or less. 
.friday...east winds 10 to 15 knots backing northeast early in the
afternoon. mostly cloudy. waves around 1 foot. 

$$

fzus53 kgrr 180136
nshgrr
expires:202605180800;;740315

nearshore marine forecast
national weather service grand rapids mi
936 pm edt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz847-180800-
grand haven to whitehall mi-
936 pm edt sun may 17 2026

...small craft advisory in effect through monday evening...

.through early evening...southeast winds 10 to 15 knots. mostly
cloudy with a slight chance of showers and thunderstorms. waves
around 1 foot. 
.tonight...south winds 15 to 25 knots increasing to 30 knots after
midnight. mostly cloudy with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
waves 2 to 3 feet building to 4 to 6 feet in the late evening and
overnight. 
.monday...south winds to 30 knots. rain showers likely and a chance
of thunderstorms. waves 5 to 7 feet. 
.monday night...south winds to 30 knots. mostly cloudy with a chance
of showers and thunderstorms. waves 4 to 6 feet. 
.tuesday...south winds to 30 knots veering southwest early in the
afternoon. rain showers and a chance of thunderstorms. waves 6 to
8 feet. 
.tuesday night...northwest winds 20 to 25 knots veering north after
midnight. partly cloudy. waves 4 to 6 feet. 
.wednesday...north winds 15 to 25 knots. mostly sunny. waves 2 to
4 feet. 
.thursday...east winds 10 to 15 knots backing north early in the
afternoon. mostly sunny. waves 1 foot or less. 
.friday...east winds 10 to 15 knots backing northeast early in the
afternoon. partly sunny. waves 1 foot or less. 

$$

fzus53 kgrr 180136
nshgrr
expires:202605180800;;740313

nearshore marine forecast
national weather service grand rapids mi
936 pm edt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz849-180800-
pentwater to manistee mi-
936 pm edt sun may 17 2026

...small craft advisory in effect through monday evening...

.through early evening...northeast winds 10 to 15 knots. rain
showers likely and a chance of thunderstorms. waves 1 to 2 feet. 
.tonight...east winds 10 to 20 knots becoming south to 30 knots in
the late evening and overnight. mostly cloudy in the evening then
becoming partly cloudy. a chance of showers and thunderstorms. waves
1 to 2 feet building to 4 to 6 feet. 
.monday...south winds to 30 knots. rain showers likely and a chance
of thunderstorms. waves 5 to 7 feet. 
.monday night...south winds to 30 knots. mostly cloudy with a chance
of showers and thunderstorms. waves 4 to 6 feet. 
.tuesday...south winds to 30 knots veering southwest early in the
afternoon. rain showers likely and a slight chance of thunderstorms.
waves 5 to 7 feet. 
.tuesday night...northwest winds 15 to 25 knots veering north after
midnight. partly cloudy. waves 4 to 6 feet. 
.wednesday...north winds 15 to 20 knots. mostly sunny. waves 2 to
4 feet. 
.thursday...northeast winds 5 to 10 knots backing north 10 to
15 knots early in the afternoon. sunny. waves 1 foot or less. 
.friday...east winds 10 to 15 knots backing north early in the
afternoon. partly sunny. waves 1 foot or less. 

$$

fzus53 kiwx 180200
nshiwx
expires:202605180830;;740908

nearshore marine forecast
national weather service northern indiana
1000 pm edt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz046-180830-
michigan city in to new buffalo mi-
1000 pm edt sun may 17 2026

.overnight...south winds 10 to 15 knots. mostly clear.
waves 1 to 2 feet. 
.monday...south winds 10 to 15 knots increasing to 15 to
20 knots. gusts up to 25 knots. a slight chance of showers and
thunderstorms in the morning, then showers likely with a chance
of thunderstorms in the afternoon. waves 1 to 3 feet. 
.monday night...south winds 15 to 20 knots. gusts up to 25 knots.
a chance of showers and thunderstorms in the evening, then a
chance of showers overnight. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. gusts up to 25 knots. a chance of showers in the
morning, then showers with a chance of thunderstorms in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 53 degrees and at michigan
city is 51 degrees.

$$

fzus53 kiwx 180200
nshiwx
expires:202605180830;;740909

nearshore marine forecast
national weather service northern indiana
1000 pm edt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz043-180830-
new buffalo mi to st joseph mi-
1000 pm edt sun may 17 2026

.overnight...south winds 10 to 15 knots. mostly clear.
waves 1 to 3 feet. 
.monday...south winds 10 to 15 knots increasing to 15 to
20 knots. gusts up to 25 knots. a slight chance of showers and
thunderstorms in the morning, then showers likely with a chance
of thunderstorms in the afternoon. waves 1 to 3 feet. 
.monday night...south winds 15 to 20 knots. gusts up to 25 knots.
a chance of showers and thunderstorms in the evening, then a
chance of showers overnight. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. gusts
up to 30 knots. a chance of showers in the morning, then showers
likely with a chance of thunderstorms in the afternoon. waves
2 to 4 feet. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 53 degrees and at michigan
city is 51 degrees.

$$

fzus53 klot 171955
nshlot
expires:202605180330;;727020

nearshore marine forecast
national weather service chicago/romeoville il
255 pm cdt sun may 17 2026

for waters within five nautical miles of shore on lake michigan

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.


lmz743>745-180330-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
255 pm cdt sun may 17 2026

...small craft advisory in effect until 10 pm cdt this evening...

.late this afternoon...south winds to 30 kt with a few 35 kt
gales. mostly cloudy. waves 1 to 3 ft. 
.tonight...south winds to 30 kt diminishing to to 15 to 25 kt. 
partly cloudy in the evening then clearing. waves 1 to 3 ft. 
.monday...south winds 20 to 25 kt becoming southwest. chance of
showers and thunderstorms in the morning, then showers and
thunderstorms likely in the afternoon. waves 2 to 4 ft. a small
craft advisory may be needed. 
.monday night...south winds 15 to 25 kt. chance of showers and 
thunderstorms. waves 2 to 4 ft. 
.tuesday...southwest winds 20 to 25 kt. slight chance of showers 
and thunderstorms in the morning, then showers and a chance of 
thunderstorms in the afternoon. waves 2 to 4 ft. 

$$

fzus53 klot 171955
nshlot
expires:202605180330;;727018

nearshore marine forecast
national weather service chicago/romeoville il
255 pm cdt sun may 17 2026

for waters within five nautical miles of shore on lake michigan

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.


lmz740-180330-
winthrop harbor to wilmette harbor il-
255 pm cdt sun may 17 2026

.late this afternoon...northeast winds 10 to 20 kt. waves 1 to 3 
ft.
.tonight...south winds 15 to 25 kt. mostly cloudy in the evening,
then becoming partly cloudy. waves 2 to 4 ft. 
.monday...south winds 15 to 25 kt. showers likely and a chance of
thunderstorms in the morning, then showers and thunderstorms 
likely in the afternoon. waves 2 to 4 ft. 
.monday night...south winds 15 to 25 kt. chance of showers and 
thunderstorms. waves 2 to 4 ft. 
.tuesday...southwest winds 20 to 25 kt becoming west in the
afternoon. showers likely and slight chance of thunderstorms.
waves 3 to 5 ft subsiding to 2 to 4 ft. 

$$

fzus53 klot 171955
nshlot
expires:202605180330;;727019

nearshore marine forecast
national weather service chicago/romeoville il
255 pm cdt sun may 17 2026

for waters within five nautical miles of shore on lake michigan

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.


lmz741-742-180330-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
255 pm cdt sun may 17 2026

...small craft advisory in effect until 10 pm cdt this evening...

.late this afternoon...south winds to 30 kt with a few 35 kt gales.
mostly cloudy. waves 2 to 4 ft. 
.tonight...south winds to 30 kt diminishing to 15 to 25 kt. 
partly cloudy. waves 2 to 4 ft. 
.monday...south winds 15 to 25 kt. showers likely and a chance of
thunderstorms in the morning, then showers and thunderstorms 
likely in the afternoon. waves 2 to 4 ft. 
.monday night...south winds 15 to 25 kt. chance of showers and 
thunderstorms. waves 2 to 4 ft. 
.tuesday...southwest winds 20 to 25 kt becoming west in the
afternoon. chance of showers and slight chance of thunderstorms
in the morning, then showers likely and a chance of thunderstorms
in the afternoon. waves 2 to 4 ft.  

$$

fzus53 kmkx 180210
nshmkx
expires:202605181000;;741733

nearshore marine forecast
national weather service milwaukee/sullivan wi
910 pm cdt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz643-181000-
sheboygan to port washington wi-
910 pm cdt sun may 17 2026

...dense fog advisory in effect until 3 am cdt monday...

.rest of tonight...southeast wind 10 to 15 knots becoming south
15 to 20 knots after midnight. widespread dense fog just before
midnight, then areas of dense fog after midnight. patchy fog
early in the morning. chance of showers and thunderstorms early
in the morning. waves 4 to 6 feet building to 5 to 7 feet early
in the morning. 
.monday...south wind 15 to 20 knots becoming 10 to 20 knots late
in the morning, then rising to 15 to 25 knots early in the
afternoon becoming 15 to 20 knots late in the afternoon. chance
of showers and thunderstorms. waves 5 to 7 feet subsiding to 4 to
6 feet late in the afternoon. 
.monday night...south wind 15 to 20 knots becoming 15 to 25 knots
early in the morning. patchy fog through around midnight. slight
chance of showers and thunderstorms through around midnight, then
showers likely and a chance of thunderstorms after midnight.
waves 4 to 6 feet. 
.tuesday...south wind 15 to 25 knots veering southwest 15 to
20 knots late in the morning, then veering west 10 to 20 knots
early in the afternoon becoming 15 to 20 knots late in the
afternoon. rain showers likely and a chance of thunderstorms in
the morning. waves 4 to 6 feet subsiding to 3 to 4 feet in the
afternoon. 

$$

fzus53 kmkx 180210
nshmkx
expires:202605181000;;741734

nearshore marine forecast
national weather service milwaukee/sullivan wi
910 pm cdt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz644-181000-
port washington to north point light wi-
910 pm cdt sun may 17 2026

...dense fog advisory in effect until 3 am cdt monday...

.rest of tonight...south wind 10 to 15 knots rising to 15 to
20 knots after midnight, then becoming south 15 to 20 knots early
in the morning. areas of dense fog just before midnight, then
patchy dense fog after midnight. chance of showers and
thunderstorms early in the morning. waves 4 to 6 feet. 
.monday...south wind 15 to 20 knots becoming 10 to 20 knots early
in the afternoon, then becoming 15 to 20 knots late in the
afternoon. chance of showers and thunderstorms. waves 3 to
5 feet. 
.monday night...south wind 15 to 20 knots becoming 15 to 25 knots
early in the morning. slight chance of showers and thunderstorms
through around midnight, then showers likely and a chance of
thunderstorms after midnight. waves 3 to 4 feet building to 3 to
5 feet early in the morning. 
.tuesday...southwest wind 15 to 25 knots becoming 15 to 20 knots
late in the morning, then veering west 10 to 20 knots early in
the afternoon becoming 15 to 20 knots late in the afternoon. rain
showers likely and a chance of thunderstorms in the morning, then
slight chance of showers and thunderstorms in the afternoon.
waves 3 to 5 feet subsiding to 3 to 4 feet in the late morning
and afternoon. 

$$

fzus53 kmkx 180210
nshmkx
expires:202605181000;;741735

nearshore marine forecast
national weather service milwaukee/sullivan wi
910 pm cdt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz645-181000-
north point light to wind point wi-
910 pm cdt sun may 17 2026

.rest of tonight...south wind 15 to 20 knots. patchy fog just
before midnight. chance of showers and thunderstorms early in the
morning. waves 3 to 4 feet. 
.monday...south wind 15 to 20 knots becoming 10 to 20 knots in
the late morning and early afternoon, then becoming 15 to
20 knots late in the afternoon. rain showers likely in the
morning. chance of thunderstorms through the day. chance of
showers in the afternoon. waves 3 to 4 feet. 
.monday night...south wind 15 to 20 knots becoming 15 to 25 knots
early in the morning. slight chance of showers and thunderstorms
through around midnight, then showers likely and a chance of
thunderstorms after midnight. waves 3 to 4 feet. a small craft
advisory may be needed. 
.tuesday...southwest wind 15 to 25 knots becoming 15 to 20 knots
late in the morning, then veering west early in the afternoon
becoming west 15 to 20 knots late in the afternoon. chance of
thunderstorms in the morning. showers likely through the day.
slight chance of thunderstorms in the afternoon. waves 3 to
4 feet subsiding to 1 to 2 feet late in the afternoon. 

$$

fzus53 kmkx 180210
nshmkx
expires:202605181000;;741736

nearshore marine forecast
national weather service milwaukee/sullivan wi
910 pm cdt sun may 17 2026

for waters within five nautical miles of shore on lake michigan


lmz646-181000-
wind point wi to winthrop harbor il-
910 pm cdt sun may 17 2026

.rest of tonight...south wind 15 to 20 knots. chance of showers
and thunderstorms early in the morning. waves 3 to 4 feet. 
.monday...south wind 15 to 20 knots. rain showers likely in the
morning. chance of thunderstorms through the day. chance of
showers in the afternoon. waves 3 to 4 feet. 
.monday night...south wind 15 to 20 knots. slight chance of
showers and thunderstorms through around midnight, then showers
likely and a chance of thunderstorms after midnight. waves 3 to
4 feet. 
.tuesday...south wind 15 to 25 knots veering southwest 15 to
20 knots in the late morning and early afternoon, then veering
west late in the afternoon. chance of thunderstorms in the
morning. showers likely through the day. slight chance of
thunderstorms in the afternoon. waves 3 to 4 feet subsiding to
1 to 2 feet late in the afternoon. a small craft advisory may be
needed. 

$$