(1/17)
Latest Nearshore Marine Forecast by KAPX
Issued 9/20/2026 9:52 AM America/New_York.
Valid through 9/20/2026 6:00 PM America/New_York.
fzus53 kapx 201352
nshapx
expires:202609202200;;766716
nearshore marine forecast
national weather service gaylord mi
952 am edt sun sep 20 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.
lmz346-202200-
manistee to point betsie mi-
952 am edt sun sep 20 2026
...small craft advisory in effect through late tonight...
.today...northeast wind 15 to 20 knots. mostly sunny. waves 2 to
4 feet.
.tonight...northeast wind 10 to 20 knots. mostly cloudy. waves
2 to 4 feet.
.monday...northeast wind 10 to 15 knots. partly sunny. waves
2 feet or less.
.monday night...northeast wind 10 to 15 knots. mostly cloudy.
waves 2 feet or less.
see the open lakes forecast for days 3 through 5.
$$
(2/17)
Latest Nearshore Marine Forecast by KGRB
Issued 9/20/2026 12:21 PM US/Central.
Valid through 9/20/2026 5:00 PM US/Central.
fzus53 kgrb 201721
nshgrb
expires:202609202200;;773440
nearshore marine forecast
national weather service green bay wi
1221 pm cdt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz542-543-202200-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
1221 pm cdt sun sep 20 2026
...small craft advisory in effect through tuesday evening...
.this afternoon...ne wind to 30 kts with gale force gusts to
around 35 kts. waves 5 to 8 ft. partly sunny.
.tonight...ne wind to 30 kts. waves 5 to 8 ft. mostly cloudy.
.monday...ne wind 15 to 25 kts. waves 4 to 7 ft. mostly cloudy.
.monday night...ne wind 15 to 25 kts. waves 4 to 7 ft. mostly
cloudy.
$$
(3/17)
Latest Nearshore Marine Forecast by KGRR
Issued 9/20/2026 1:21 PM America/New_York.
Valid through 9/21/2026 4:00 AM America/New_York.
fzus53 kgrr 201721
nshgrr
expires:202609210800;;773432
nearshore marine forecast
national weather service grand rapids mi
121 pm edt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz849-210800-
pentwater to manistee mi-
121 pm edt sun sep 20 2026
...small craft advisory in effect through late tonight...
.through early evening...north winds to 30 knots. partly sunny.
waves 4 to 6 feet.
.tonight...northeast winds to 30 knots decreasing to 15 to 20 knots
after midnight. partly cloudy. waves 4 to 6 feet subsiding to 2 to
4 feet after midnight.
.monday...northeast winds 15 to 20 knots. mostly cloudy. waves 2 to
4 feet.
.monday night...northeast winds 10 to 20 knots. partly cloudy. waves
1 to 3 feet.
.tuesday...northeast winds 10 to 20 knots. partly sunny. waves 1 to
3 feet.
.tuesday night...northeast winds 10 to 20 knots. mostly clear. waves
1 to 2 feet.
.wednesday...northeast winds 10 to 15 knots. mostly sunny. waves
around 1 foot.
.thursday...east winds 5 to 15 knots backing northeast early in the
afternoon. mostly sunny. waves 1 foot or less.
.friday...east winds 5 to 10 knots backing north early in the
afternoon. mostly sunny. waves less than 1 foot.
$$
(4/17)
Latest Nearshore Marine Forecast by KGRR
Issued 9/20/2026 1:21 PM America/New_York.
Valid through 9/21/2026 4:00 AM America/New_York.
fzus53 kgrr 201721
nshgrr
expires:202609210800;;773437
nearshore marine forecast
national weather service grand rapids mi
121 pm edt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz844-210800-
st joseph to south haven mi-
121 pm edt sun sep 20 2026
.through early evening...northeast winds 15 to 20 knots. cloudy with
a chance of rain showers. waves 2 to 4 feet.
.tonight...northeast winds 15 to 25 knots. mostly cloudy. waves 2 to
4 feet building to 3 to 5 feet in the late evening and overnight.
.monday...northeast winds 20 to 25 knots. mostly cloudy with a
slight chance of rain showers. waves 2 to 4 feet.
.monday night...northeast winds 15 to 25 knots. mostly cloudy. waves
2 to 4 feet.
.tuesday...northeast winds 15 to 20 knots. partly sunny. waves 2 to
4 feet.
.tuesday night...northeast winds 15 to 25 knots. partly cloudy.
waves 2 to 4 feet.
.wednesday...northeast winds 15 to 20 knots. partly sunny. waves
1 to 3 feet.
.thursday...northeast winds 10 to 15 knots. mostly sunny. waves
1 foot or less.
.friday...east winds 5 to 10 knots backing north early in the
afternoon. mostly sunny. waves less than 1 foot.
$$
(5/17)
Latest Nearshore Marine Forecast by KGRR
Issued 9/20/2026 1:21 PM America/New_York.
Valid through 9/21/2026 4:00 AM America/New_York.
fzus53 kgrr 201721
nshgrr
expires:202609210800;;773436
nearshore marine forecast
national weather service grand rapids mi
121 pm edt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz845-210800-
south haven to holland mi-
121 pm edt sun sep 20 2026
.through early evening...northeast winds 15 to 20 knots. cloudy with
a chance of rain showers. waves 1 to 2 feet.
.tonight...northeast winds 15 to 25 knots. partly cloudy. waves 2 to
4 feet.
.monday...east winds 20 to 25 knots. mostly cloudy. waves 1 to
3 feet.
.monday night...northeast winds 15 to 25 knots. mostly cloudy. waves
1 to 3 feet.
.tuesday...northeast winds 15 to 25 knots. partly sunny. waves 1 to
2 feet.
.tuesday night...northeast winds 15 to 25 knots. partly cloudy.
waves 1 to 3 feet.
.wednesday...northeast winds 15 to 20 knots. mostly sunny. waves
1 to 2 feet.
.thursday...northeast winds 10 to 15 knots. partly sunny. waves
1 foot or less.
.friday...east winds around 10 knots backing northeast early in the
afternoon. mostly sunny. waves less than 1 foot.
$$
(6/17)
Latest Nearshore Marine Forecast by KGRR
Issued 9/20/2026 1:21 PM America/New_York.
Valid through 9/21/2026 4:00 AM America/New_York.
fzus53 kgrr 201721
nshgrr
expires:202609210800;;773435
nearshore marine forecast
national weather service grand rapids mi
121 pm edt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz846-210800-
holland to grand haven mi-
121 pm edt sun sep 20 2026
.through early evening...northeast winds 15 to 20 knots. cloudy with
a slight chance of rain showers. waves 1 to 2 feet.
.tonight...northeast winds 15 to 25 knots. partly cloudy. waves 1 to
3 feet.
.monday...east winds 20 to 25 knots. partly sunny. waves 2 to
4 feet.
.monday night...northeast winds 15 to 25 knots. mostly cloudy. waves
2 to 4 feet.
.tuesday...northeast winds 20 to 25 knots. partly sunny. waves 1 to
3 feet.
.tuesday night...northeast winds 15 to 25 knots. partly cloudy.
waves 1 to 3 feet.
.wednesday...northeast winds 20 to 25 knots. mostly sunny. waves
1 to 2 feet.
.thursday...northeast winds 10 to 15 knots. mostly sunny. waves
around 1 foot.
.friday...east winds around 10 knots backing northeast early in the
afternoon. mostly sunny. waves less than 1 foot.
$$
(7/17)
Latest Nearshore Marine Forecast by KGRR
Issued 9/20/2026 1:21 PM America/New_York.
Valid through 9/21/2026 4:00 AM America/New_York.
fzus53 kgrr 201721
nshgrr
expires:202609210800;;773434
nearshore marine forecast
national weather service grand rapids mi
121 pm edt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz847-210800-
grand haven to whitehall mi-
121 pm edt sun sep 20 2026
.through early evening...northeast winds 15 to 20 knots. mostly
cloudy. waves around 1 foot.
.tonight...northeast winds 15 to 25 knots. partly cloudy. waves 2 to
4 feet.
.monday...northeast winds 20 to 25 knots. partly sunny. waves 1 to
3 feet.
.monday night...northeast winds 15 to 25 knots. partly cloudy. waves
1 to 3 feet.
.tuesday...northeast winds 15 to 25 knots. partly sunny. waves 1 to
2 feet.
.tuesday night...northeast winds 15 to 25 knots. partly cloudy.
waves 1 to 2 feet.
.wednesday...northeast winds 15 to 20 knots. mostly sunny. waves
1 to 2 feet.
.thursday...northeast winds 10 to 15 knots. mostly sunny. waves
1 foot or less.
.friday...east winds 5 to 10 knots backing north early in the
afternoon. mostly sunny. waves less than 1 foot.
$$
(8/17)
Latest Nearshore Marine Forecast by KGRR
Issued 9/20/2026 1:21 PM America/New_York.
Valid through 9/21/2026 4:00 AM America/New_York.
fzus53 kgrr 201721
nshgrr
expires:202609210800;;773433
nearshore marine forecast
national weather service grand rapids mi
121 pm edt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz848-210800-
whitehall to pentwater mi-
121 pm edt sun sep 20 2026
...small craft advisory in effect through late tonight...
.through early evening...northeast winds 15 to 25 knots. mostly
cloudy. waves 3 to 5 feet.
.tonight...northeast winds to 30 knots decreasing to 15 to 20 knots
after midnight. partly cloudy. waves 5 to 7 feet subsiding to 1 to
3 feet after midnight.
.monday...northeast winds 15 to 25 knots. mostly cloudy. waves 1 to
3 feet.
.monday night...northeast winds 15 to 20 knots. mostly cloudy. waves
1 to 2 feet.
.tuesday...northeast winds 15 to 20 knots. partly sunny. waves 1 to
3 feet.
.tuesday night...northeast winds 15 to 20 knots. partly cloudy.
waves 1 to 2 feet.
.wednesday...northeast winds 15 to 20 knots. mostly sunny. waves
1 to 2 feet.
.thursday...northeast winds 10 to 15 knots. mostly sunny. waves
1 foot or less.
.friday...east winds 5 to 10 knots backing north early in the
afternoon. mostly sunny. waves less than 1 foot.
$$
(9/17)
Latest Nearshore Marine Forecast by KIWX
Issued 9/20/2026 10:57 AM America/New_York.
Valid through 9/20/2026 4:15 PM America/New_York.
fzus53 kiwx 201457 cca
nshiwx
expires:202609202015;;768871
nearshore marine forecast...corrected
national weather service northern indiana
1057 am edt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz046-202015-
michigan city in to new buffalo mi-
1057 am edt sun sep 20 2026
.rest of today...northeast winds 10 to 15 knots increasing to
15 to 20 knots. a few gusts to 25 knots. showers with a chance of
thunderstorms late this morning, then showers with a slight
chance of thunderstorms this afternoon. waves 1 to 3 feet building
to 2 to 4 feet.
.tonight...northeast winds 15 to 20 knots becoming east. a few
gusts to 25 knots. a chance of showers with a slight chance of
thunderstorms in the evening, then a slight chance of showers
overnight. waves 3 to 4 feet.
.monday...northeast winds 15 to 20 knots. gusts up to 25 knots. a
chance of showers in the morning, then a slight chance of showers
in the afternoon. waves 2 to 4 feet.
.monday night...northeast winds 15 to 20 knots. gusts up to
25 knots. mostly cloudy. waves 2 to 4 feet building to 3 to
5 feet, then subsiding to 2 to 4 feet.
winds and waves higher in and near thunderstorms.
the water temperature at st. joseph is 52 degrees and at michigan
city is 51 degrees.
$$
(10/17)
Latest Nearshore Marine Forecast by KIWX
Issued 9/20/2026 10:57 AM America/New_York.
Valid through 9/20/2026 4:15 PM America/New_York.
fzus53 kiwx 201457 cca
nshiwx
expires:202609202015;;768870
nearshore marine forecast...corrected
national weather service northern indiana
1057 am edt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz043-202015-
new buffalo mi to st joseph mi-
1057 am edt sun sep 20 2026
.rest of today...northeast winds 10 to 15 knots increasing to
15 to 20 knots. a few gusts to 25 knots. showers with a chance of
thunderstorms late this morning, then showers with a slight
chance of thunderstorms this afternoon. waves 1 to 3 feet.
.tonight...northeast winds 15 to 20 knots becoming east. a few
gusts to 25 knots. a chance of showers in the evening. waves 2 to
4 feet.
.monday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. gusts up to 25 knots. a chance of showers in the
morning, then a slight chance of showers in the afternoon. waves
1 to 3 feet.
.monday night...northeast winds 15 to 20 knots. gusts up to
25 knots. mostly cloudy. waves 1 to 3 feet building to 2 to
4 feet, then subsiding to 1 to 3 feet.
winds and waves higher in and near thunderstorms.
the water temperature at st. joseph is 52 degrees and at michigan
city is 51 degrees.
$$
(11/17)
Latest Nearshore Marine Forecast by KLOT
Issued 9/20/2026 10:20 AM US/Central.
Valid through 9/20/2026 4:15 PM US/Central.
fzus53 klot 201520
nshlot
expires:202609202115;;769783
nearshore marine forecast
national weather service chicago/romeoville il
1020 am cdt sun sep 20 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.
lmz743-744-202115-
calumet harbor il to gary in-gary to burns harbor in-
1020 am cdt sun sep 20 2026
...small craft advisory in effect through tuesday evening...
.rest of today...northeast winds 15 to 20 kt increasing to 30 kt.
showers and slight chance of thunderstorms. waves 3 to 5 ft
building to 5 to 8 ft occasionally to 10 ft.
.tonight...northeast winds to 30 kt becoming east 20 to 25 kt.
chance of showers. waves 5 to 8 ft occasionally to 10 ft.
.monday...east winds 20 to 25 kt becoming northeast. chance of
showers in the morning, then slight chance of showers in the
afternoon. waves 5 to 8 ft occasionally to 10 ft.
.monday night...northeast winds 15 to 25 kt. slight chance of
showers overnight. waves 5 to 8 ft occasionally to 10 ft.
$$
(12/17)
Latest Nearshore Marine Forecast by KLOT
Issued 9/20/2026 10:20 AM US/Central.
Valid through 9/20/2026 4:15 PM US/Central.
fzus53 klot 201520
nshlot
expires:202609202115;;769784
nearshore marine forecast
national weather service chicago/romeoville il
1020 am cdt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.
lmz745-202115-
burns harbor to michigan city in-
1020 am cdt sun sep 20 2026
...small craft advisory in effect through monday morning...
.rest of today...northeast winds 10 to 20 kt increasing to 20 to
25 kt. showers and slight chance of thunderstorms. waves 1 to 3
ft building to 4 to 7 ft occasionally to 9 ft.
.tonight...northeast winds 20 to 25 kt becoming east. chance of
showers and slight chance of thunderstorms in the evening, then
slight chance of showers overnight. waves 4 to 6 ft occasionally
to 8 ft.
.monday...northeast winds 15 to 25 kt. chance of showers in the
morning, then slight chance of showers in the afternoon. waves 3
to 5 ft.
.monday night...northeast winds 15 to 25 kt. slight chance of
showers overnight. waves 4 to 6 ft occasionally to 8 ft.
$$
(13/17)
Latest Nearshore Marine Forecast by KLOT
Issued 9/20/2026 10:20 AM US/Central.
Valid through 9/20/2026 4:15 PM US/Central.
fzus53 klot 201520
nshlot
expires:202609202115;;769782
nearshore marine forecast
national weather service chicago/romeoville il
1020 am cdt sun sep 20 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>742-202115-
winthrop harbor to wilmette harbor il-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
1020 am cdt sun sep 20 2026
...small craft advisory in effect through tuesday evening...
.rest of today...northeast winds 20 to 25 kt increasing to 30 kt.
showers and slight chance of thunderstorms. waves 4 to 6 ft
occasionally to 8 ft building to 7 to 10 ft occasionally to 13
ft.
.tonight...northeast winds to 30 kt becoming east. slight chance
of showers overnight. waves 7 to 10 ft occasionally to 13 ft.
.monday...east winds to 30 kt becoming northeast. chance of
showers in the morning, then slight chance of showers in the
afternoon. waves 7 to 10 ft occasionally to 13 ft.
.monday night...northeast winds to 30 kt. slight chance of
showers. waves 7 to 10 ft occasionally to 13 ft.
$$
(14/17)
Latest Nearshore Marine Forecast by KMKX
Issued 9/20/2026 11:10 AM US/Central.
Valid through 9/20/2026 5:00 PM US/Central.
fzus53 kmkx 201610
nshmkx
expires:202609202200;;771080
nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz644-202200-
port washington to north point light wi-
1110 am cdt sun sep 20 2026
...small craft advisory in effect through tuesday evening...
.rest of today...northeast wind up to 30 knots rising to gales to
35 knots late in the afternoon. cloudy. waves 8 to 10 feet.
.tonight...northeast gales to 35 knots easing to up to 30 knots
late in the evening, then becoming east 15 to 25 knots after
midnight. mostly cloudy. waves 9 to 11 feet.
.monday...east wind up to 30 knots backing northeast early in the
afternoon, then easing to 15 to 25 knots late in the afternoon.
slight chance of showers in the afternoon. waves 7 to 9 feet.
.monday night...northeast wind 15 to 25 knots with gusts to
around 30 knots becoming northeast 15 to 25 knots late in the
evening, then veering east after midnight backing northeast early
in the morning. mostly cloudy. waves 6 to 8 feet.
$$
(15/17)
Latest Nearshore Marine Forecast by KMKX
Issued 9/20/2026 11:10 AM US/Central.
Valid through 9/20/2026 5:00 PM US/Central.
fzus53 kmkx 201610
nshmkx
expires:202609202200;;771082
nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz646-202200-
wind point wi to winthrop harbor il-
1110 am cdt sun sep 20 2026
...small craft advisory in effect through tuesday evening...
.rest of today...northeast wind up to 30 knots. showers likely
early in the afternoon, then chance of showers late in the
afternoon. waves 6 to 8 feet building to 7 to 9 feet late in the
afternoon.
.tonight...northeast wind up to 30 knots veering east after
midnight, then becoming east up to 30 knots early in the morning.
mostly cloudy. waves 8 to 10 feet.
.monday...east wind up to 30 knots backing northeast early in the
afternoon, then easing to 15 to 25 knots late in the afternoon.
slight chance of showers. waves 8 to 10 feet.
.monday night...northeast wind 15 to 25 knots veering east after
midnight, then backing northeast early in the morning. cloudy.
waves 6 to 8 feet.
$$
(16/17)
Latest Nearshore Marine Forecast by KMKX
Issued 9/20/2026 11:10 AM US/Central.
Valid through 9/20/2026 5:00 PM US/Central.
fzus53 kmkx 201610
nshmkx
expires:202609202200;;771079
nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz643-202200-
sheboygan to port washington wi-
1110 am cdt sun sep 20 2026
...small craft advisory in effect through tuesday evening...
.rest of today...northeast wind up to 30 knots rising to gales to
35 knots late in the afternoon. mostly cloudy. waves 7 to 9 feet.
.tonight...northeast gales to 35 knots easing to up to 30 knots
late in the evening, then becoming east 15 to 25 knots after
midnight. mostly cloudy. waves 8 to 10 feet.
.monday...east wind 15 to 25 knots backing northeast late in the
afternoon. gusts up to 30 knots. mostly cloudy. waves 6 to
8 feet.
.monday night...northeast wind 15 to 25 knots with gusts to
around 30 knots becoming northeast 15 to 25 knots late in the
evening, then veering east after midnight becoming northeast
10 to 20 knots early in the morning. mostly cloudy. waves 6 to
8 feet subsiding to 5 to 7 feet after midnight.
$$
(17/17)
Latest Nearshore Marine Forecast by KMKX
Issued 9/20/2026 11:10 AM US/Central.
Valid through 9/20/2026 5:00 PM US/Central.
fzus53 kmkx 201610
nshmkx
expires:202609202200;;771081
nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt sun sep 20 2026
for waters within five nautical miles of shore on lake michigan
lmz645-202200-
north point light to wind point wi-
1110 am cdt sun sep 20 2026
...small craft advisory in effect through tuesday evening...
.rest of today...northeast wind up to 30 knots. slight chance of
showers early in the afternoon. waves 8 to 10 feet.
.tonight...northeast wind up to 30 knots becoming east 15 to
25 knots after midnight, then rising to up to 30 knots early in
the morning. mostly cloudy. waves 9 to 11 feet.
.monday...east wind up to 30 knots backing northeast early in the
afternoon, then easing to 15 to 25 knots late in the afternoon.
slight chance of showers in the afternoon. waves 8 to 10 feet.
.monday night...northeast wind 15 to 25 knots veering east after
midnight, then backing northeast early in the morning. mostly
cloudy. waves 6 to 8 feet.
$$
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