(1/18)
Latest Nearshore Marine Forecast by KAPX
Issued 9/17/2026 11:48 AM America/New_York.
Valid through 9/17/2026 8:00 PM America/New_York.
fzus53 kapx 171548
nshapx
expires:202609180000;;607001
nearshore marine forecast
national weather service gaylord mi
1148 am edt thu sep 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.
lmz346-180000-
manistee to point betsie mi-
1148 am edt thu sep 17 2026
.today...north wind 5 to 10 knots. cloudy in the late morning
then becoming partly sunny. waves 2 feet or less.
.tonight...northeast wind 5 to 10 knots. partly cloudy. waves
2 feet or less.
.friday...northeast wind 5 to 10 knots. mostly cloudy. waves
2 feet or less.
.friday night...east wind 10 to 15 knots. rain likely. waves
2 feet or less.
see the open lakes forecast for days 3 through 5.
$$
(2/18)
Latest Nearshore Marine Forecast by KGRB
Issued 9/17/2026 11:12 AM US/Central.
Valid through 9/17/2026 5:00 PM US/Central.
fzus53 kgrb 171612
nshgrb
expires:202609172200;;608041
nearshore marine forecast
national weather service green bay wi
1112 am cdt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz541>543-172200-
rock island passage to sturgeon bay wi-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
1112 am cdt thu sep 17 2026
.this afternoon...ne wind 5 to 10 kts. waves 2 ft or less. mostly
cloudy during the morning then becoming partly cloudy.
.tonight...ne wind 10 to 15 kts. waves 1 to 3 ft. partly cloudy.
.friday...e wind 10 to 15 kts. waves 2 to 4 ft. a chance of
showers in the afternoon.
.friday night...e wind 10 to 15 kts increasing to 15 to 25 kts
after midnight. waves 2 to 4 ft building to 4 to 7 ft after
midnight. a chance of showers. a small craft advisory may be
needed.
$$
(3/18)
Latest Nearshore Marine Forecast by KGRR
Issued 9/17/2026 12:11 PM America/New_York.
Valid through 9/18/2026 4:00 AM America/New_York.
fzus53 kgrr 171611
nshgrr
expires:202609180800;;608028
nearshore marine forecast
national weather service grand rapids mi
1210 pm edt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz849-180800-
pentwater to manistee mi-
1211 pm edt thu sep 17 2026
.through early evening...north winds 5 to 15 knots. partly sunny.
waves 1 foot or less.
.tonight...northeast winds 10 to 15 knots. partly cloudy. waves
around 1 foot.
.friday...northeast winds 5 to 15 knots. partly sunny. waves around
1 foot.
.friday night...east winds 10 to 20 knots. cloudy with rain showers.
waves 1 to 2 feet.
.saturday...east winds 15 to 25 knots. rain showers and a slight
chance of thunderstorms. waves 1 to 3 feet.
.saturday night...east winds 10 to 20 knots backing northeast after
midnight. cloudy with a chance of rain showers. waves 1 to 2 feet.
.sunday...northeast winds 15 to 25 knots. partly sunny. waves 2 to
4 feet.
.monday...east winds 10 to 20 knots. mostly cloudy. waves 1 to
2 feet.
.tuesday...east winds 10 to 20 knots. partly sunny. waves around
1 foot.
$$
(4/18)
Latest Nearshore Marine Forecast by KGRR
Issued 9/17/2026 12:11 PM America/New_York.
Valid through 9/18/2026 4:00 AM America/New_York.
fzus53 kgrr 171611
nshgrr
expires:202609180800;;608032
nearshore marine forecast
national weather service grand rapids mi
1210 pm edt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz845-180800-
south haven to holland mi-
1211 pm edt thu sep 17 2026
.through early evening...northeast winds 5 to 10 knots. mostly
cloudy. waves less than 1 foot.
.tonight...northeast winds 10 to 15 knots. mostly cloudy in the
evening then becoming partly cloudy. waves around 1 foot.
.friday...east winds 10 to 15 knots. mostly sunny. waves 1 foot or
less.
.friday night...east winds 10 to 20 knots. mostly cloudy with rain
showers likely. waves around 1 foot.
.saturday...southeast winds 15 to 20 knots. rain showers and a
slight chance of thunderstorms. waves 1 to 2 feet.
.saturday night...south winds around 15 knots backing northeast
after midnight. rain showers and a chance of thunderstorms. waves
around 1 foot.
.sunday...northeast winds 15 to 20 knots. mostly cloudy with rain
showers likely and a chance of thunderstorms. waves 1 to 3 feet.
.monday...east winds 15 to 25 knots. mostly cloudy with a chance of
rain showers. waves 1 to 2 feet.
.tuesday...east winds 15 to 20 knots. partly sunny. waves around
1 foot.
$$
(5/18)
Latest Nearshore Marine Forecast by KGRR
Issued 9/17/2026 12:11 PM America/New_York.
Valid through 9/18/2026 4:00 AM America/New_York.
fzus53 kgrr 171611
nshgrr
expires:202609180800;;608030
nearshore marine forecast
national weather service grand rapids mi
1210 pm edt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz847-180800-
grand haven to whitehall mi-
1211 pm edt thu sep 17 2026
.through early evening...northeast winds around 10 knots. mostly
cloudy. waves less than 1 foot.
.tonight...northeast winds 10 to 15 knots. partly cloudy. waves
around 1 foot.
.friday...east winds 10 to 15 knots. mostly sunny. waves 1 foot or
less.
.friday night...east winds 15 to 25 knots. cloudy with rain showers.
waves 1 to 3 feet.
.saturday...southeast winds 20 to 25 knots. rain showers and a
chance of thunderstorms. waves 2 to 4 feet.
.saturday night...east winds 15 to 25 knots backing northeast after
midnight. rain showers. waves 2 to 4 feet subsiding to 1 to 3 feet
in the late evening and overnight.
.sunday...northeast winds 15 to 25 knots. mostly cloudy with a
chance of rain showers. waves 1 to 2 feet.
.monday...east winds 20 to 25 knots. mostly cloudy. waves 1 to
3 feet.
.tuesday...east winds 15 to 25 knots. partly sunny. waves 1 to
2 feet.
$$
(6/18)
Latest Nearshore Marine Forecast by KGRR
Issued 9/17/2026 12:11 PM America/New_York.
Valid through 9/18/2026 4:00 AM America/New_York.
fzus53 kgrr 171611
nshgrr
expires:202609180800;;608031
nearshore marine forecast
national weather service grand rapids mi
1210 pm edt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz846-180800-
holland to grand haven mi-
1211 pm edt thu sep 17 2026
.through early evening...northeast winds around 10 knots. mostly
cloudy. waves less than 1 foot.
.tonight...northeast winds 10 to 15 knots. partly cloudy. waves
1 foot or less.
.friday...east winds 10 to 15 knots. mostly sunny. waves around
1 foot.
.friday night...east winds 15 to 25 knots. cloudy with a chance of
rain showers. waves 1 to 3 feet.
.saturday...southeast winds 15 to 25 knots. rain showers and a
slight chance of thunderstorms. waves 1 to 3 feet.
.saturday night...southeast winds 15 to 20 knots backing northeast
in the late evening and overnight. rain showers and a chance of
thunderstorms. waves 1 to 3 feet.
.sunday...northeast winds 15 to 25 knots. mostly cloudy with a
chance of showers and thunderstorms. waves 1 to 3 feet.
.monday...east winds 20 to 25 knots. mostly cloudy. waves 2 to
4 feet.
.tuesday...east winds 20 to 25 knots. partly sunny. waves 1 to
2 feet.
$$
(7/18)
Latest Nearshore Marine Forecast by KGRR
Issued 9/17/2026 12:11 PM America/New_York.
Valid through 9/18/2026 4:00 AM America/New_York.
fzus53 kgrr 171611
nshgrr
expires:202609180800;;608029
nearshore marine forecast
national weather service grand rapids mi
1210 pm edt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz848-180800-
whitehall to pentwater mi-
1211 pm edt thu sep 17 2026
.through early evening...northeast winds around 10 knots. partly
sunny. waves less than 1 foot.
.tonight...north winds 10 to 15 knots veering northeast after
midnight. partly cloudy. waves 1 to 2 feet.
.friday...northeast winds 10 to 15 knots. partly sunny. waves around
1 foot.
.friday night...east winds 10 to 20 knots increasing to 15 to
25 knots after midnight. cloudy with rain showers. waves 1 to
3 feet.
.saturday...southeast winds 20 to 25 knots. rain showers and a
slight chance of thunderstorms. waves 2 to 4 feet.
.saturday night...east winds 15 to 25 knots backing northeast after
midnight. rain showers. waves 2 to 4 feet subsiding to 1 to 3 feet
in the late evening and overnight.
.sunday...northeast winds 15 to 25 knots. mostly cloudy. waves 2 to
4 feet.
.monday...east winds 15 to 25 knots. mostly cloudy. waves 1 to
2 feet.
.tuesday...east winds 15 to 20 knots. partly sunny. waves 1 to
2 feet.
$$
(8/18)
Latest Nearshore Marine Forecast by KGRR
Issued 9/17/2026 12:11 PM America/New_York.
Valid through 9/18/2026 4:00 AM America/New_York.
fzus53 kgrr 171611
nshgrr
expires:202609180800;;608033
nearshore marine forecast
national weather service grand rapids mi
1210 pm edt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz844-180800-
st joseph to south haven mi-
1211 pm edt thu sep 17 2026
.through early evening...north winds 5 to 10 knots. mostly cloudy
with a slight chance of rain showers. waves less than 1 foot.
.tonight...northeast winds 10 to 15 knots. mostly cloudy in the
evening then becoming partly cloudy. waves around 1 foot.
.friday...east winds 10 to 15 knots. mostly sunny. waves around
1 foot.
.friday night...east winds 10 to 20 knots. mostly cloudy with a
slight chance of rain showers. waves 1 to 2 feet.
.saturday...southeast winds 10 to 20 knots. rain showers and a
slight chance of thunderstorms. waves 1 to 2 feet.
.saturday night...southeast winds 10 to 15 knots backing north after
midnight. rain showers and a chance of thunderstorms. waves 1 to
2 feet.
.sunday...northeast winds 15 to 20 knots. mostly cloudy with rain
showers likely and a chance of thunderstorms. waves 2 to 4 feet.
.monday...east winds 15 to 25 knots. mostly cloudy with a chance of
rain showers. waves 1 to 3 feet.
.tuesday...east winds 15 to 20 knots. partly sunny. waves 1 to
2 feet.
$$
(9/18)
Latest Nearshore Marine Forecast by KIWX
Issued 9/17/2026 10:47 AM America/New_York.
Valid through 9/17/2026 4:30 PM America/New_York.
fzus53 kiwx 171447
nshiwx
expires:202609172030;;605013
nearshore marine forecast
national weather service northern indiana
1047 am edt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz043-172030-
new buffalo mi to st joseph mi-
1047 am edt thu sep 17 2026
.rest of today...west 5 to 10 knots becoming north in the
afternoon. showers likely with a chance of thunderstorms late
this morning, then a slight chance of showers and thunderstorms
early this afternoon. waves 1 foot or less.
.tonight...north winds 5 to 10 knots becoming northeast. mostly
cloudy. waves 2 feet or less.
.friday...northeast winds 5 to 10 knots becoming east. partly
sunny. waves 1 foot or less.
.friday night...east winds 5 to 15 knots becoming southeast. a
chance of showers overnight. waves 2 feet or less.
winds and waves higher in and near thunderstorms.
the water temperature at st. joseph is 54 degrees and at michigan
city is 52 degrees.
$$
(10/18)
Latest Nearshore Marine Forecast by KIWX
Issued 9/17/2026 10:47 AM America/New_York.
Valid through 9/17/2026 4:30 PM America/New_York.
fzus53 kiwx 171447
nshiwx
expires:202609172030;;605014
nearshore marine forecast
national weather service northern indiana
1047 am edt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz046-172030-
michigan city in to new buffalo mi-
1047 am edt thu sep 17 2026
.rest of today...west 5 to 10 knots becoming north in the
afternoon. showers likely with a chance of thunderstorms late
this morning, then a slight chance of showers and thunderstorms
early this afternoon. waves 1 foot or less.
.tonight...north winds 5 to 10 knots becoming northeast. mostly
cloudy. waves 2 feet or less.
.friday...northeast winds 5 to 10 knots becoming east. partly
sunny. waves 2 feet or less.
.friday night...east winds 5 to 15 knots becoming southeast.
showers likely overnight. waves 2 feet or less.
winds and waves higher in and near thunderstorms.
the water temperature at st. joseph is 54 degrees and at michigan
city is 52 degrees.
$$
(11/18)
Latest Nearshore Marine Forecast by KLOT
Issued 9/17/2026 10:51 AM US/Central.
Valid through 9/17/2026 4:15 PM US/Central.
fzus53 klot 171551 aaa
nshlot
expires:202609172115;;607086
nearshore marine forecast...updated
national weather service chicago/romeoville il
1051 am cdt thu sep 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>745-172115-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
1051 am cdt thu sep 17 2026
.rest of today...southwest winds around 10 kt becoming north
this afternoon. chance of showers. waves 1 to 2 ft.
.tonight...north winds 10 to 15 kt becoming northeast late.
mostly cloudy. waves 1 to 2 ft building to 2 to 4 ft.
.friday...east winds 10 to 15 kt. mostly cloudy. waves 2 to 4 ft
subsiding to 1 to 3 ft.
.friday night...east winds 10 to 15 kt becoming southeast 15 to
20 kt. showers likely and slight chance of thunderstorms
overnight. waves 2 to 4 ft.
$$
(12/18)
Latest Nearshore Marine Forecast by KLOT
Issued 9/17/2026 10:51 AM US/Central.
Valid through 9/17/2026 4:15 PM US/Central.
fzus53 klot 171551 aaa
nshlot
expires:202609172115;;607084
nearshore marine forecast...updated
national weather service chicago/romeoville il
1051 am cdt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.
lmz740-172115-
winthrop harbor to wilmette harbor il-
1051 am cdt thu sep 17 2026
...dense fog advisory in effect until 3 pm cdt this afternoon...
.rest of today...north winds around 10 kt. areas of dense fog
through mid afternoon. chance of showers. waves 1 to 2 ft.
.tonight...north winds 10 to 15 kt becoming northeast. mostly
cloudy. waves 1 to 3 ft building to 2 to 4 ft.
.friday...east winds 10 to 15 kt. mostly cloudy. waves 2 to 4 ft.
.friday night...east winds 15 to 20 kt becoming southeast. chance
of showers in the evening, then showers likely and slight chance
of thunderstorms overnight. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. a small craft advisory will likely be
needed.
$$
(13/18)
Latest Nearshore Marine Forecast by KLOT
Issued 9/17/2026 10:51 AM US/Central.
Valid through 9/17/2026 4:15 PM US/Central.
fzus53 klot 171551 aaa
nshlot
expires:202609172115;;607085
nearshore marine forecast...updated
national weather service chicago/romeoville il
1051 am cdt thu sep 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.
lmz741-742-172115-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
1051 am cdt thu sep 17 2026
.rest of today...north winds around 10 kt. patchy fog. chance of
showers. waves 1 to 2 ft.
.tonight...north winds 10 to 15 kt becoming northeast. mostly
cloudy. waves 1 to 3 ft building to 2 to 4 ft.
.friday...east winds 10 to 15 kt. mostly cloudy. waves 2 to 4 ft.
.friday night...east winds 15 to 20 kt becoming southeast. chance
of showers in the evening, then showers likely and slight chance
of thunderstorms overnight. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. a small craft advisory will likely be
needed.
$$
(14/18)
Latest Nearshore Marine Forecast by KLOT
Issued 9/17/2026 10:19 AM US/Central.
Valid through 9/17/2026 4:15 PM US/Central.
fzus53 klot 171519
nshlot
expires:202609172115;;606427
nearshore marine forecast
national weather service chicago/romeoville il
1019 am cdt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.
lmz740>742-172115-
winthrop harbor to wilmette harbor il-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
1019 am cdt thu sep 17 2026
.rest of today...north winds around 10 kt. chance of showers.
waves 1 to 2 ft.
.tonight...north winds 10 to 15 kt becoming northeast. mostly
cloudy. waves 1 to 3 ft building to 2 to 4 ft.
.friday...east winds 10 to 15 kt. mostly cloudy. waves 2 to 4 ft.
.friday night...east winds 15 to 20 kt becoming southeast. chance
of showers in the evening, then showers likely and slight chance
of thunderstorms overnight. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. a small craft advisory will likely be
needed.
$$
(15/18)
Latest Nearshore Marine Forecast by KMKX
Issued 9/17/2026 11:10 AM US/Central.
Valid through 9/17/2026 5:00 PM US/Central.
fzus53 kmkx 171610
nshmkx
expires:202609172200;;608015
nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz643-172200-
sheboygan to port washington wi-
1110 am cdt thu sep 17 2026
.rest of today...northeast wind 10 to 15 knots. chance of
sprinkles early in the afternoon. waves 1 to 2 feet.
.tonight...north wind 10 to 15 knots veering northeast early in
the morning. mostly cloudy through around midnight then clearing.
waves 1 to 2 feet building to 2 to 4 feet early in the morning.
.friday...northeast wind 10 to 15 knots veering east late in the
morning, then becoming east 10 to 15 knots in the afternoon.
chance of showers in the afternoon. waves 3 to 4 feet.
.friday night...northeast wind 15 to 20 knots veering east late
in the evening, then becoming 15 to 25 knots after midnight
becoming east 15 to 25 knots early in the morning. rain showers
through the night. slight chance of thunderstorms after midnight.
waves 3 to 5 feet building to 7 to 9 feet. a small craft advisory
may be needed.
$$
(16/18)
Latest Nearshore Marine Forecast by KMKX
Issued 9/17/2026 11:10 AM US/Central.
Valid through 9/17/2026 5:00 PM US/Central.
fzus53 kmkx 171610
nshmkx
expires:202609172200;;608016
nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz644-172200-
port washington to north point light wi-
1110 am cdt thu sep 17 2026
.rest of today...northeast wind 10 to 15 knots. chance of
sprinkles early in the afternoon. waves 1 to 3 feet.
.tonight...north wind 10 to 15 knots veering northeast early in
the morning. mostly cloudy through around midnight then becoming
partly cloudy. waves 1 to 3 feet building to 2 to 4 feet early in
the morning.
.friday...northeast wind 10 to 15 knots veering east in the late
morning and early afternoon, then becoming east 10 to 15 knots
late in the afternoon. chance of showers in the afternoon. waves
3 to 4 feet.
.friday night...northeast wind 15 to 20 knots veering east late
in the evening, then becoming 15 to 25 knots after midnight
becoming east 15 to 25 knots early in the morning. chance of
showers through around midnight, then showers and a chance of
thunderstorms after midnight. waves 2 to 4 feet building to 7 to
9 feet. a small craft advisory may be needed.
$$
(17/18)
Latest Nearshore Marine Forecast by KMKX
Issued 9/17/2026 11:10 AM US/Central.
Valid through 9/17/2026 5:00 PM US/Central.
fzus53 kmkx 171610
nshmkx
expires:202609172200;;608018
nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz646-172200-
wind point wi to winthrop harbor il-
1110 am cdt thu sep 17 2026
.rest of today...north wind 10 to 15 knots. chance of sprinkles.
waves 1 to 2 feet.
.tonight...north wind 10 to 15 knots veering northeast early in
the morning. chance of sprinkles through around midnight. waves
1 to 3 feet building to 2 to 4 feet after midnight.
.friday...northeast wind 15 to 20 knots veering east late in the
morning, then easing to 10 to 15 knots in the afternoon. partly
sunny. waves 3 to 4 feet.
.friday night...east wind 10 to 15 knots rising to 15 to 20 knots
late in the evening, then veering southeast after midnight
becoming 15 to 25 knots early in the morning. showers likely
through around midnight, then showers and a chance of
thunderstorms after midnight. waves 3 to 4 feet building to 6 to
8 feet. a small craft advisory may be needed.
$$
(18/18)
Latest Nearshore Marine Forecast by KMKX
Issued 9/17/2026 11:10 AM US/Central.
Valid through 9/17/2026 5:00 PM US/Central.
fzus53 kmkx 171610
nshmkx
expires:202609172200;;608017
nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt thu sep 17 2026
for waters within five nautical miles of shore on lake michigan
lmz645-172200-
north point light to wind point wi-
1110 am cdt thu sep 17 2026
.rest of today...north wind 10 to 15 knots. chance of sprinkles.
waves 1 to 3 feet.
.tonight...north wind 10 to 15 knots veering northeast early in
the morning. chance of sprinkles through around midnight. waves
1 to 3 feet building to 2 to 4 feet in the late evening and
overnight.
.friday...northeast wind 15 to 20 knots veering east late in the
morning, then easing to 10 to 15 knots in the afternoon. chance
of showers in the afternoon. waves 3 to 4 feet.
.friday night...east wind 10 to 15 knots rising to 15 to 20 knots
late in the evening, then becoming 10 to 20 knots with gusts to
around 25 knots after midnight rising to 15 to 25 knots early in
the morning. chance of showers through around midnight, then
showers and a chance of thunderstorms after midnight. waves 2 to
4 feet building to 6 to 8 feet. a small craft advisory may be
needed.
$$
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