(1/10)
Latest Nearshore Marine Forecast by KAPX
Issued 5/21/2026 3:21 AM America/New_York.
Valid through 5/21/2026 11:30 AM America/New_York.
fzus53 kapx 210721
nshapx
expires:202605211530;;389103
nearshore marine forecast
national weather service gaylord mi
321 am edt thu may 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.
lmz346-211530-
manistee to point betsie mi-
321 am edt thu may 21 2026
.today...northeast wind 10 to 15 knots. mostly sunny early in the
morning then becoming mostly cloudy. waves 2 feet or less.
.tonight...east wind 5 to 10 knots. mostly cloudy. waves 2 feet
or less.
.friday...east wind 10 to 15 knots. partly sunny. waves 2 feet or
less.
.friday night...east wind 10 to 15 knots. rain showers likely.
waves 2 feet or less.
see the open lakes forecast for days 3 through 5.
$$
(2/10)
Latest Nearshore Marine Forecast by KGRB
Issued 5/21/2026 2:56 AM US/Central.
Valid through 5/21/2026 5:00 AM US/Central.
fzus53 kgrb 210756
nshgrb
expires:202605211000;;389917
nearshore marine forecast
national weather service green bay wi
256 am cdt thu may 21 2026
for waters within five nautical miles of shore on lake michigan
lmz542-543-211000-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
256 am cdt thu may 21 2026
.rest of the night...ne wind 10 to 15 kts. waves 1 to 3 ft.
mostly clear.
.thursday...ne wind 10 to 15 kts. waves 1 to 3 ft. partly cloudy
in the morning then becoming mostly cloudy.
.thursday night...ne wind 10 to 15 kts veering e in the late
evening and overnight. waves 1 to 3 ft. partly cloudy in the
evening then becoming mostly cloudy.
.friday...ne wind 10 to 20 kts. waves 1 to 3 ft building to 2 to
4 ft in the afternoon. partly sunny.
$$
(3/10)
Latest Nearshore Marine Forecast by KIWX
Issued 5/21/2026 3:54 AM America/New_York.
Valid through 5/21/2026 10:15 AM America/New_York.
fzus53 kiwx 210754
nshiwx
expires:202605211415;;389902
nearshore marine forecast
national weather service northern indiana
354 am edt thu may 21 2026
for waters within five nautical miles of shore on lake michigan
lmz043-211415-
new buffalo mi to st joseph mi-
354 am edt thu may 21 2026
.today...east winds 10 to 15 knots becoming north. mostly sunny.
waves 1 to 3 feet.
.tonight...northeast winds 10 to 15 knots becoming east. partly
cloudy in the evening, then becoming mostly cloudy. waves 1 to
3 feet.
.friday...east winds 10 to 15 knots. partly sunny. waves 1 to
2 feet.
.friday night...east winds 10 to 15 knots. gusts up to 25 knots.
showers likely in the evening, then showers overnight. waves 1 to
2 feet.
the water temperature at st. joseph is 54 degrees and at michigan
city is 55 degrees.
$$
(4/10)
Latest Nearshore Marine Forecast by KIWX
Issued 5/21/2026 3:54 AM America/New_York.
Valid through 5/21/2026 10:15 AM America/New_York.
fzus53 kiwx 210754
nshiwx
expires:202605211415;;389901
nearshore marine forecast
national weather service northern indiana
354 am edt thu may 21 2026
for waters within five nautical miles of shore on lake michigan
lmz046-211415-
michigan city in to new buffalo mi-
354 am edt thu may 21 2026
.today...east winds 10 to 15 knots becoming north. gusts up to 20
knots. mostly sunny. waves 1 to 3 feet.
.tonight...northeast winds 10 to 15 knots becoming east. gusts up
to 20 knots. partly cloudy in the evening, then becoming mostly
cloudy. waves 2 to 4 feet.
.friday...east winds 10 to 15 knots. a chance of showers in the
afternoon. waves 1 to 2 feet.
.friday night...east winds 10 to 15 knots becoming northeast.
showers likely in the evening, then showers overnight. waves 1 to
2 feet.
the water temperature at st. joseph is 54 degrees and at michigan
city is 55 degrees.
$$
(5/10)
Latest Nearshore Marine Forecast by KLOT
Issued 5/21/2026 3:07 AM US/Central.
Valid through 5/21/2026 10:15 AM US/Central.
fzus53 klot 210807
nshlot
expires:202605211515;;390766
nearshore marine forecast
national weather service chicago/romeoville il
307 am cdt thu may 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>745-211515-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
307 am cdt thu may 21 2026
...small craft advisory in effect until 7 am cdt this morning...
.today...east winds 15 to 20 kt becoming northeast 15 to 25 kt
late. partly cloudy. waves 3 to 6 ft occasionally to 8 ft early
subsiding to 3 to 5 ft.
.tonight...northeast winds 15 to 25 kt becoming east and
diminishing to 10 to 15 kt overnight. partly cloudy in the
evening, then becoming mostly cloudy. waves 3 to 5 ft subsiding
to 2 to 4 ft.
.friday...east winds 15 to 20 kt becoming northeast. chance of
showers in the afternoon. waves 2 to 4 ft.
.friday night...east winds 10 to 20 kt. showers and slight chance
of thunderstorms. waves 2 to 4 ft.
$$
(6/10)
Latest Nearshore Marine Forecast by KLOT
Issued 5/21/2026 3:07 AM US/Central.
Valid through 5/21/2026 10:15 AM US/Central.
fzus53 klot 210807
nshlot
expires:202605211515;;390765
nearshore marine forecast
national weather service chicago/romeoville il
307 am cdt thu may 21 2026
for waters within five nautical miles of shore on lake michigan
waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.
lmz740>742-211515-
winthrop harbor to wilmette harbor il-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
307 am cdt thu may 21 2026
...small craft advisory in effect until 1 pm cdt this afternoon...
.today...northeast winds 15 to 25 kt. mostly cloudy in the
morning, then becoming partly cloudy. waves 3 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.
.tonight...northeast winds 15 to 25 kt becoming east 10 to 20 kt
overnight. mostly cloudy. waves 3 to 5 ft.
.friday...east winds 15 to 25 kt becoming northeast. slight
chance of showers in the afternoon. waves 3 to 5 ft subsiding to
2 to 4 ft.
.friday night...east winds 20 to 25 kt becoming northeast 15 to
20 kt. showers likely. waves 4 to 6 ft occasionally to 8 ft.
$$
(7/10)
Latest Nearshore Marine Forecast by KMKX
Issued 5/21/2026 3:10 AM US/Central.
Valid through 5/21/2026 4:00 PM US/Central.
fzus53 kmkx 210810
nshmkx
expires:202605212100;;391301
nearshore marine forecast
national weather service milwaukee/sullivan wi
310 am cdt thu may 21 2026
for waters within five nautical miles of shore on lake michigan
lmz645-212100-
north point light to wind point wi-
310 am cdt thu may 21 2026
...small craft advisory in effect through friday evening...
.early this morning...northeast wind 15 to 20 knots. partly
cloudy. waves 3 to 5 feet.
.today...northeast wind 15 to 20 knots easing to 10 to 15 knots
late in the morning, then becoming northeast 10 to 15 knots early
in the afternoon backing north with gusts to around 20 knots late
in the afternoon. partly sunny. waves 3 to 4 feet.
.tonight...northeast wind 15 to 20 knots veering east early in
the morning. mostly cloudy. waves 3 to 4 feet.
.friday...east wind 15 to 20 knots becoming northeast 10 to
15 knots early in the afternoon, then rising to 15 to 20 knots
late in the afternoon. partly sunny. waves 3 to 4 feet.
.friday night...northeast wind 15 to 20 knots veering east 10 to
20 knots in the late evening and early morning, then backing
northeast 15 to 20 knots early in the morning. chance of showers
through around midnight, then showers after midnight. waves 4 to
6 feet building to 5 to 7 feet after midnight.
$$
(8/10)
Latest Nearshore Marine Forecast by KMKX
Issued 5/21/2026 3:10 AM US/Central.
Valid through 5/21/2026 4:00 PM US/Central.
fzus53 kmkx 210810
nshmkx
expires:202605212100;;391302
nearshore marine forecast
national weather service milwaukee/sullivan wi
310 am cdt thu may 21 2026
for waters within five nautical miles of shore on lake michigan
lmz646-212100-
wind point wi to winthrop harbor il-
310 am cdt thu may 21 2026
...small craft advisory in effect through friday evening...
.early this morning...northeast wind 15 to 20 knots. partly
cloudy. waves 3 to 5 feet.
.today...northeast wind 15 to 20 knots easing to 10 to 15 knots
late in the morning, then becoming northeast 10 to 15 knots early
in the afternoon becoming north 15 to 20 knots late in the
afternoon. chance of sprinkles early in the afternoon. waves 3 to
4 feet.
.tonight...north wind 15 to 20 knots veering east after midnight.
partly cloudy through around midnight then becoming mostly
cloudy. waves 3 to 4 feet.
.friday...east wind 15 to 20 knots becoming northeast 10 to
15 knots early in the afternoon, then rising to 15 to 20 knots
late in the afternoon. mostly cloudy. waves 3 to 4 feet.
.friday night...northeast wind 15 to 20 knots veering east 10 to
20 knots late in the evening, then becoming 15 to 20 knots after
midnight backing northeast early in the morning. chance of
showers through around midnight, then showers after midnight.
waves 3 to 4 feet building to 4 to 6 feet in the late evening and
overnight.
$$
(9/10)
Latest Nearshore Marine Forecast by KMKX
Issued 5/21/2026 3:10 AM US/Central.
Valid through 5/21/2026 4:00 PM US/Central.
fzus53 kmkx 210810
nshmkx
expires:202605212100;;391299
nearshore marine forecast
national weather service milwaukee/sullivan wi
310 am cdt thu may 21 2026
for waters within five nautical miles of shore on lake michigan
lmz643-212100-
sheboygan to port washington wi-
310 am cdt thu may 21 2026
.early this morning...northeast wind 15 to 20 knots easing to
10 to 15 knots early in the morning. partly cloudy. waves 2 to
4 feet.
.today...northeast wind 15 to 20 knots easing to 10 to 15 knots
late in the morning, then becoming northeast 10 to 15 knots in
the afternoon. partly sunny. waves 2 to 4 feet subsiding to 1 to
3 feet late in the afternoon.
.tonight...northeast wind 10 to 15 knots with gusts to around
20 knots veering east after midnight. partly cloudy through
around midnight then becoming mostly cloudy. waves 2 to 4 feet.
.friday...northeast wind 10 to 15 knots rising to 15 to 20 knots
early in the afternoon, then becoming northeast 15 to 20 knots
late in the afternoon. partly sunny. waves 2 to 4 feet.
.friday night...northeast wind 15 to 20 knots veering east 10 to
20 knots late in the evening, then backing northeast 15 to
20 knots after midnight. chance of showers through around
midnight, then showers likely after midnight. waves 3 to 4 feet
building to 4 to 6 feet in the late evening and overnight.
$$
(10/10)
Latest Nearshore Marine Forecast by KMKX
Issued 5/21/2026 3:10 AM US/Central.
Valid through 5/21/2026 4:00 PM US/Central.
fzus53 kmkx 210810
nshmkx
expires:202605212100;;391300
nearshore marine forecast
national weather service milwaukee/sullivan wi
310 am cdt thu may 21 2026
for waters within five nautical miles of shore on lake michigan
lmz644-212100-
port washington to north point light wi-
310 am cdt thu may 21 2026
...small craft advisory in effect from this evening through
friday evening...
.early this morning...northeast wind 15 to 20 knots. partly
cloudy. waves 3 to 4 feet.
.today...northeast wind 15 to 20 knots easing to 10 to 15 knots
late in the morning, then becoming northeast 10 to 15 knots in
the afternoon. mostly cloudy. waves 3 to 4 feet.
.tonight...northeast wind 15 to 20 knots easing to 10 to 15 knots
late in the evening, then becoming east 15 to 20 knots after
midnight. partly cloudy through around midnight then becoming
mostly cloudy. waves 3 to 4 feet.
.friday...east wind 15 to 20 knots becoming northeast 10 to
15 knots with gusts to around 20 knots early in the afternoon,
then rising to 15 to 20 knots late in the afternoon. partly
sunny. waves 3 to 4 feet.
.friday night...northeast wind 15 to 20 knots becoming 10 to
20 knots in the late evening and early morning, then becoming
15 to 20 knots early in the morning. chance of showers through
the night. waves 3 to 4 feet building to 5 to 7 feet.
$$
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