(1/17)
Latest Nearshore Marine Forecast by KAPX
Issued 4/21/2026 2:50 PM America/New_York.
Valid through 4/21/2026 11:00 PM America/New_York.
fzus53 kapx 211850
nshapx
expires:202604220300;;759438
nearshore marine forecast
national weather service gaylord mi
250 pm edt tue apr 21 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.
lmz346-220300-
manistee to point betsie mi-
250 pm edt tue apr 21 2026
.tonight...northeast wind 5 to 10 knots. mostly clear. waves
2 feet or less.
.wednesday...light winds. sunny. waves 2 feet or less.
.wednesday night...southeast wind 5 to 10 knots. mostly clear.
waves 2 feet or less.
.thursday...south wind 5 to 10 knots. partly sunny. waves 2 feet
or less.
see the open lakes forecast for days 3 through 5.
$$
(2/17)
Latest Nearshore Marine Forecast by KGRB
Issued 4/21/2026 5:24 PM US/Central.
Valid through 4/21/2026 11:00 PM US/Central.
fzus53 kgrb 212224
nshgrb
expires:202604220400;;767674
nearshore marine forecast
national weather service green bay wi
524 pm cdt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz542-543-220400-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
524 pm cdt tue apr 21 2026
.late this afternoon...e wind 5 to 10 kts. waves 2 to 4 ft.
sunny.
.tonight...ne wind 5 to 10 kts. waves 1 to 3 ft. clear.
.wednesday...ne wind 5 to 10 kts veering e early in the
afternoon. waves 2 ft or less. sunny.
.wednesday night...se wind 5 to 10 kts veering s 10 to 15 kts
after midnight. waves 2 ft or less. clear in the evening then
becoming partly cloudy.
.thursday...s wind 10 to 20 kts. waves 1 to 3 ft building to 4 to
7 ft in the afternoon. partly sunny. a small craft advisory may
be needed.
$$
(3/17)
Latest Nearshore Marine Forecast by KGRR
Issued 4/21/2026 5:45 PM America/New_York.
Valid through 4/22/2026 5:00 AM America/New_York.
fzus53 kgrr 212145
nshgrr
expires:202604220900;;766305
nearshore marine forecast
national weather service grand rapids mi
545 pm edt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz846-220900-
holland to grand haven mi-
545 pm edt tue apr 21 2026
.rest of tonight...south winds 10 to 15 knots backing northeast 5 to
10 knots after midnight. partly cloudy. waves 2 to 4 feet subsiding
to 1 to 2 feet in the late evening and overnight.
.wednesday...northeast winds 5 to 10 knots backing northwest early
in the afternoon. sunny. waves 1 foot or less.
.wednesday night...north winds 5 to 15 knots veering southeast in
the late evening and overnight. mostly clear. waves 1 foot or less.
.thursday...south winds 10 to 15 knots. mostly sunny. waves 1 to
2 feet.
.thursday night...south winds 10 to 20 knots. partly cloudy. waves
2 to 3 feet.
.friday...south winds 15 to 20 knots. rain showers and a chance of
thunderstorms. waves 2 to 4 feet.
.saturday...northwest winds 15 to 20 knots. partly sunny. waves 2 to
4 feet.
.sunday...northeast winds 10 to 15 knots backing north early in the
afternoon. mostly sunny. waves around 1 foot.
$$
(4/17)
Latest Nearshore Marine Forecast by KGRR
Issued 4/21/2026 5:45 PM America/New_York.
Valid through 4/22/2026 5:00 AM America/New_York.
fzus53 kgrr 212145
nshgrr
expires:202604220900;;766302
nearshore marine forecast
national weather service grand rapids mi
545 pm edt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz849-220900-
pentwater to manistee mi-
545 pm edt tue apr 21 2026
.rest of tonight...northwest winds around 10 knots veering northeast
in the late evening and overnight. mostly clear. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight.
.wednesday...north winds 5 to 10 knots becoming around 10 knots
early in the afternoon. sunny. waves around 1 foot.
.wednesday night...northeast winds 5 to 15 knots veering southeast
in the late evening and overnight. mostly clear. waves 1 foot or
less.
.thursday...south winds 10 to 20 knots. partly sunny. waves 2 to
3 feet.
.thursday night...southeast winds 15 to 20 knots. partly cloudy.
waves 2 to 4 feet.
.friday...southeast winds 15 to 20 knots. rain showers likely. waves
2 to 4 feet.
.saturday...north winds 10 to 20 knots. partly sunny. waves 2 to
4 feet.
.sunday...northeast winds 10 to 15 knots backing north early in the
afternoon. mostly sunny. waves around 1 foot.
$$
(5/17)
Latest Nearshore Marine Forecast by KGRR
Issued 4/21/2026 5:45 PM America/New_York.
Valid through 4/22/2026 5:00 AM America/New_York.
fzus53 kgrr 212145
nshgrr
expires:202604220900;;766303
nearshore marine forecast
national weather service grand rapids mi
545 pm edt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz848-220900-
whitehall to pentwater mi-
545 pm edt tue apr 21 2026
.rest of tonight...south winds 5 to 10 knots backing northeast 10 to
15 knots in the late evening and overnight. mostly clear. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and overnight.
.wednesday...north winds 5 to 10 knots backing northwest early in
the afternoon. sunny. waves around 1 foot.
.wednesday night...northeast winds 5 to 15 knots veering southeast
in the late evening and overnight. mostly clear. waves around
1 foot.
.thursday...south winds 10 to 20 knots. partly sunny. waves 2 to
3 feet.
.thursday night...southeast winds 15 to 20 knots. partly cloudy.
waves 2 to 4 feet.
.friday...southeast winds 15 to 20 knots. rain showers likely. waves
3 to 5 feet.
.saturday...north winds 15 to 20 knots. partly sunny. waves 2 to
4 feet.
.sunday...northeast winds 10 to 15 knots backing north early in the
afternoon. mostly sunny. waves around 1 foot.
$$
(6/17)
Latest Nearshore Marine Forecast by KGRR
Issued 4/21/2026 5:45 PM America/New_York.
Valid through 4/22/2026 5:00 AM America/New_York.
fzus53 kgrr 212145
nshgrr
expires:202604220900;;766304
nearshore marine forecast
national weather service grand rapids mi
545 pm edt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz847-220900-
grand haven to whitehall mi-
545 pm edt tue apr 21 2026
.rest of tonight...south winds 10 to 15 knots veering north in the
late evening and early morning, then veering northeast after
midnight. mostly clear. waves 2 to 4 feet subsiding to 1 to 3 feet
in the late evening and overnight.
.wednesday...northeast winds 5 to 10 knots backing northwest early
in the afternoon. sunny. waves 1 foot or less.
.wednesday night...north winds 5 to 15 knots veering southeast in
the late evening and overnight. mostly clear. waves 1 foot or less.
.thursday...south winds 10 to 15 knots. mostly sunny. waves 1 to
3 feet.
.thursday night...southeast winds 15 to 20 knots. partly cloudy.
waves 2 to 4 feet.
.friday...south winds 15 to 20 knots. rain showers. waves 2 to
4 feet.
.saturday...north winds 15 to 20 knots. partly sunny. waves 2 to
4 feet.
.sunday...northeast winds 10 to 15 knots backing north early in the
afternoon. mostly sunny. waves around 1 foot.
$$
(7/17)
Latest Nearshore Marine Forecast by KGRR
Issued 4/21/2026 5:45 PM America/New_York.
Valid through 4/22/2026 5:00 AM America/New_York.
fzus53 kgrr 212145
nshgrr
expires:202604220900;;766307
nearshore marine forecast
national weather service grand rapids mi
545 pm edt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz844-220900-
st joseph to south haven mi-
545 pm edt tue apr 21 2026
.rest of tonight...southwest winds 10 to 15 knots veering north 5 to
10 knots after midnight. partly cloudy. a chance of rain showers and
a slight chance of thunderstorms in the evening. waves 1 to 3 feet.
.wednesday...northeast winds 5 to 10 knots backing north early in
the afternoon. mostly sunny. waves 1 foot or less.
.wednesday night...northeast winds around 5 knots veering southeast
in the late evening and overnight. partly cloudy. waves less than
1 foot.
.thursday...south winds 10 to 15 knots. mostly sunny. waves 1 foot
or less.
.thursday night...south winds 10 to 20 knots. partly cloudy. waves
around 1 foot.
.friday...south winds 15 to 20 knots. mostly cloudy with a chance of
rain showers. waves 1 to 2 feet.
.saturday...north winds 15 to 20 knots. partly sunny. waves 2 to
4 feet.
.sunday...northeast winds 10 to 15 knots. mostly sunny. waves 1 to
2 feet.
$$
(8/17)
Latest Nearshore Marine Forecast by KGRR
Issued 4/21/2026 5:45 PM America/New_York.
Valid through 4/22/2026 5:00 AM America/New_York.
fzus53 kgrr 212145
nshgrr
expires:202604220900;;766306
nearshore marine forecast
national weather service grand rapids mi
545 pm edt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz845-220900-
south haven to holland mi-
545 pm edt tue apr 21 2026
.rest of tonight...southwest winds 10 to 15 knots backing northeast
5 to 10 knots after midnight. partly cloudy. waves 2 to 3 feet.
.wednesday...northeast winds 5 to 10 knots backing northwest early
in the afternoon. sunny. waves 1 foot or less.
.wednesday night...north winds around 5 knots veering southeast in
the late evening and overnight. mostly clear. waves less than
1 foot.
.thursday...south winds 10 to 15 knots. mostly sunny. waves 1 foot
or less.
.thursday night...south winds 10 to 20 knots. partly cloudy. waves
1 to 2 feet.
.friday...south winds 15 to 20 knots. rain showers and a chance of
thunderstorms. waves 1 to 3 feet.
.saturday...north winds 15 to 20 knots. partly sunny. waves 2 to
4 feet.
.sunday...northeast winds 10 to 15 knots backing north early in the
afternoon. mostly sunny. waves around 1 foot.
$$
(9/17)
Latest Nearshore Marine Forecast by KIWX
Issued 4/21/2026 3:50 PM America/New_York.
Valid through 4/21/2026 10:15 PM America/New_York.
fzus53 kiwx 211950
nshiwx
expires:202604220215;;761525
nearshore marine forecast
national weather service northern indiana
350 pm edt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz043-220215-
new buffalo mi to st joseph mi-
350 pm edt tue apr 21 2026
...small craft advisory in effect until 8 pm edt this evening...
.late this afternoon...southwest winds 10 to 15 knots. gusts up
to 25 knots. a chance of showers with a slight chance of
thunderstorms late. waves 1 to 2 feet.
.tonight...southwest winds 10 knots or less becoming northwest. a
chance of thunderstorms with a slight chance of showers early,
then a slight chance of showers and thunderstorms late this
evening. patchy fog late. waves 2 feet or less.
.wednesday...light and variable winds. patchy fog in the morning.
waves 1 foot or less.
.wednesday night...light and variable winds becoming south 5 to
10 knots. partly cloudy. waves 1 foot or less.
.thursday...south winds 5 to 10 knots. mostly sunny. waves 1 foot
or less.
winds and waves higher in and near thunderstorms.
the water temperature at st. joseph is 50 degrees and at michigan
city is 48 degrees.
$$
(10/17)
Latest Nearshore Marine Forecast by KIWX
Issued 4/21/2026 3:50 PM America/New_York.
Valid through 4/21/2026 10:15 PM America/New_York.
fzus53 kiwx 211950
nshiwx
expires:202604220215;;761524
nearshore marine forecast
national weather service northern indiana
350 pm edt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz046-220215-
michigan city in to new buffalo mi-
350 pm edt tue apr 21 2026
...small craft advisory in effect until 8 pm edt this evening...
.late this afternoon...southwest winds 10 to 15 knots.
gusts up to 25 knots. a chance of showers with a slight chance of
thunderstorms late. waves 1 to 2 feet.
.tonight...southwest winds 10 knots or less becoming west. a
chance of showers and thunderstorms early, then a slight chance
of showers and thunderstorms late this evening. patchy fog late.
waves 2 feet or less.
.wednesday...north winds less than 10 knots. patchy fog in the
morning. waves 1 foot or less.
.wednesday night...light and variable winds becoming south 5 to
10 knots. partly cloudy. waves 1 foot or less.
.thursday...south winds 5 to 10 knots. mostly sunny. waves 1 foot
or less.
winds and waves higher in and near thunderstorms.
the water temperature at st. joseph is 50 degrees and at michigan
city is 48 degrees.
$$
(11/17)
Latest Nearshore Marine Forecast by KLOT
Issued 4/21/2026 2:52 PM US/Central.
Valid through 4/21/2026 10:30 PM US/Central.
fzus53 klot 211952
nshlot
expires:202604220330;;761536
nearshore marine forecast
national weather service chicago/romeoville il
252 pm cdt tue apr 21 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.
lmz740-220330-
winthrop harbor to wilmette harbor il-
252 pm cdt tue apr 21 2026
.tonight...southwest winds 15 to 20 kt diminishing to 10 to 15 kt
early this evening, then becoming north after midnight. areas of
fog possible after midnight. waves 1 to 3 ft.
.wednesday...north winds around 10 kt becoming northeast. areas
of dense fog possible in the morning, then patchy fog in the
afternoon. waves 1 to 2 ft.
.wednesday night...east winds around 10 kt becoming south
overnight. partly cloudy. waves 1 to 2 ft.
.thursday...south winds 10 to 15 kt increasing to 15 to 20 kt.
partly cloudy. waves 1 to 3 ft.
$$
(12/17)
Latest Nearshore Marine Forecast by KLOT
Issued 4/21/2026 2:52 PM US/Central.
Valid through 4/21/2026 10:30 PM US/Central.
fzus53 klot 211952
nshlot
expires:202604220330;;761537
nearshore marine forecast
national weather service chicago/romeoville il
252 pm cdt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.
lmz741-742-220330-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
252 pm cdt tue apr 21 2026
.tonight...southwest winds 15 to 25 kt diminishing to 10 to 15 kt
early, then becoming north after midnight. areas of fog possible
after midnight. waves 1 to 3 ft.
.wednesday...north winds around 10 kt becoming northeast. areas
of dense fog possible in the morning, then patchy fog in the
afternoon. waves 1 to 2 ft.
.wednesday night...east winds around 10 kt becoming south
overnight. partly cloudy. waves 1 to 2 ft.
.thursday...south winds 10 to 15 kt increasing to 15 to 20 kt.
partly cloudy. waves 1 to 3 ft.
$$
(13/17)
Latest Nearshore Marine Forecast by KLOT
Issued 4/21/2026 2:52 PM US/Central.
Valid through 4/21/2026 10:30 PM US/Central.
fzus53 klot 211952
nshlot
expires:202604220330;;761538
nearshore marine forecast
national weather service chicago/romeoville il
252 pm cdt tue apr 21 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>745-220330-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
252 pm cdt tue apr 21 2026
...small craft advisory in effect until 7 pm cdt this evening...
.tonight...southwest winds 20 to 25 kt diminishing to 10 to 20 kt
early this evening, then becoming northwest and diminishing to
around 10 kt after midnight. chance of showers and thunderstorms
in the evening. areas of fog after midnight. waves 1 to 3 ft.
.wednesday...north winds around 10 kt. areas of fog in the
morning, then patchy fog in the afternoon. waves around 1 to 2 ft.
.wednesday night...east winds around 10 kt becoming south
overnight. partly cloudy. waves around 1 ft.
.thursday...south winds 10 to 15 kt increasing to 15 to 20 kt.
partly cloudy. waves 1 to 2 ft.
$$
(14/17)
Latest Nearshore Marine Forecast by KMKX
Issued 4/21/2026 5:10 PM US/Central.
Valid through 4/21/2026 11:00 PM US/Central.
fzus53 kmkx 212210
nshmkx
expires:202604220400;;767288
nearshore marine forecast
national weather service milwaukee/sullivan wi
510 pm cdt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz646-220400-
wind point wi to winthrop harbor il-
510 pm cdt tue apr 21 2026
.tonight...southwest wind 5 to 10 knots veering north early in
the morning. patchy fog in the late evening and overnight. waves
around 1 foot.
.wednesday...north wind 5 to 10 knots veering east late in the
afternoon. patchy fog in the morning. waves around 1 foot.
.wednesday night...southeast wind 5 to 10 knots veering south
early in the morning. partly cloudy. waves around 1 foot.
.thursday...south wind 5 to 10 knots rising to 10 to 15 knots
late in the morning, then becoming south 10 to 15 knots with
gusts to around 20 knots early in the afternoon backing southeast
with gusts to around 20 knots late in the afternoon. partly
sunny. waves 1 to 2 feet building to 2 to 4 feet late in the
afternoon.
$$
(15/17)
Latest Nearshore Marine Forecast by KMKX
Issued 4/21/2026 5:10 PM US/Central.
Valid through 4/21/2026 11:00 PM US/Central.
fzus53 kmkx 212210
nshmkx
expires:202604220400;;767286
nearshore marine forecast
national weather service milwaukee/sullivan wi
510 pm cdt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz644-220400-
port washington to north point light wi-
510 pm cdt tue apr 21 2026
.tonight...northeast wind 5 to 10 knots backing north late in the
evening, then becoming north 5 to 10 knots after midnight. patchy
fog after midnight. waves around 1 foot.
.wednesday...north wind 5 to 10 knots veering east late in the
afternoon. sunny. waves 1 to 2 feet.
.wednesday night...east wind 5 to 10 knots veering south early in
the morning. partly cloudy. waves around 1 foot.
.thursday...south wind 10 to 15 knots becoming south 10 to
15 knots with gusts to around 20 knots early in the afternoon,
then becoming southeast 15 to 20 knots late in the afternoon.
partly sunny. waves 1 to 2 feet building to 3 to 4 feet in the
afternoon.
$$
(16/17)
Latest Nearshore Marine Forecast by KMKX
Issued 4/21/2026 5:10 PM US/Central.
Valid through 4/21/2026 11:00 PM US/Central.
fzus53 kmkx 212210
nshmkx
expires:202604220400;;767285
nearshore marine forecast
national weather service milwaukee/sullivan wi
510 pm cdt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz643-220400-
sheboygan to port washington wi-
510 pm cdt tue apr 21 2026
.tonight...northeast wind 5 to 10 knots backing north late in the
evening, then rising to 10 to 15 knots after midnight. mostly
clear. waves 1 to 2 feet.
.wednesday...north wind 5 to 10 knots veering east late in the
afternoon. sunny. waves 1 to 2 feet.
.wednesday night...east wind 5 to 10 knots veering south early in
the morning. clear through around midnight then becoming partly
cloudy. waves around 1 foot.
.thursday...south wind 10 to 15 knots becoming south 10 to
15 knots with gusts to around 20 knots early in the afternoon,
then rising to 15 to 20 knots late in the afternoon. partly
sunny. waves 1 to 2 feet building to 3 to 4 feet in the
afternoon.
$$
(17/17)
Latest Nearshore Marine Forecast by KMKX
Issued 4/21/2026 5:10 PM US/Central.
Valid through 4/21/2026 11:00 PM US/Central.
fzus53 kmkx 212210
nshmkx
expires:202604220400;;767287
nearshore marine forecast
national weather service milwaukee/sullivan wi
510 pm cdt tue apr 21 2026
for waters within five nautical miles of shore on lake michigan
lmz645-220400-
north point light to wind point wi-
510 pm cdt tue apr 21 2026
.tonight...west wind 5 to 10 knots veering north early in the
morning. patchy fog after midnight. waves around 1 foot.
.wednesday...north wind 5 to 10 knots veering east late in the
afternoon. patchy fog in the morning. waves around 1 foot.
.wednesday night...southeast wind 5 to 10 knots veering south
early in the morning. partly cloudy. waves around 1 foot.
.thursday...south wind 5 to 10 knots rising to 10 to 15 knots
late in the morning, then becoming south 10 to 15 knots with
gusts to around 20 knots early in the afternoon backing southeast
with gusts to around 20 knots late in the afternoon. partly
sunny. waves 1 to 2 feet building to 2 to 4 feet late in the
afternoon.
$$
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