fzus53 kapx 201429
nshapx
expires:202608202230;;053328

nearshore marine forecast
national weather service gaylord mi
1029 am edt thu aug 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.


lmz346-202230-
manistee to point betsie mi-
1029 am edt thu aug 20 2026

.today...light winds. sunny. waves 2 feet or less. 
.tonight...south wind 10 to 15 knots. slight chance of showers.
waves 2 feet or less. 
.friday...south wind 10 to 15 knots. chance of showers. waves
2 to 3 feet. 
.friday night...southwest wind 10 to 15 knots. chance of showers.
waves 2 to 3 feet. 

see the open lakes forecast for days 3 through 5.

$$

fzus53 kgrb 201659
nshgrb
expires:202608202200;;057545

nearshore marine forecast
national weather service green bay wi
1159 am cdt thu aug 20 2026

for waters within five nautical miles of shore on lake michigan


lmz541>543-202200-
rock island passage to sturgeon bay wi-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
1159 am cdt thu aug 20 2026

.this afternoon...s wind 10 to 15 kts. waves 2 ft or less. mostly
sunny during the morning then becoming partly cloudy. 
.tonight...s wind 10 to 15 kts. waves 1 to 3 ft. a slight chance
of showers after midnight. 
.friday...s wind 10 to 15 kts. waves 1 to 3 ft building to 2 to
4 ft in the afternoon. a chance of showers and thunderstorms. 
.friday night...sw wind 5 to 10 kts veering nw 10 to 15 kts in
the late evening and overnight. waves 2 to 4 ft subsiding to 1 to
3 ft after midnight. a chance of showers in the evening.  

$$

fzus53 kgrr 201336
nshgrr
expires:202608202100;;051502

nearshore marine forecast
national weather service grand rapids mi
936 am edt thu aug 20 2026

for waters within five nautical miles of shore on lake michigan


lmz846-202100-
holland to grand haven mi-
936 am edt thu aug 20 2026

.rest of today...northeast winds around 10 knots backing northwest
early in the afternoon. sunny. waves 1 foot or less. 
.tonight...northwest winds 5 to 15 knots veering southeast after
midnight. partly cloudy. waves around 1 foot. 
.friday...south winds 10 to 15 knots veering southwest early in the
afternoon. mostly sunny. waves 1 to 2 feet. 
.friday night...southwest winds 10 to 15 knots. rain showers and a
slight chance of thunderstorms. waves 1 to 2 feet. 
.saturday...northwest winds 15 to 25 knots. mostly sunny. waves 4 to
6 feet. 
.sunday...north winds 15 to 25 knots backing northwest to 30 knots
early in the afternoon. sunny. waves 4 to 6 feet. 
.monday...northeast winds around 10 knots backing northwest early in
the afternoon. sunny. waves 1 foot or less. 

$$

fzus53 kgrr 201336
nshgrr
expires:202608202100;;051501

nearshore marine forecast
national weather service grand rapids mi
936 am edt thu aug 20 2026

for waters within five nautical miles of shore on lake michigan


lmz847-202100-
grand haven to whitehall mi-
936 am edt thu aug 20 2026

.rest of today...northeast winds 5 to 10 knots backing northwest
10 to 15 knots early in the afternoon. sunny. waves 1 foot or less. 
.tonight...northwest winds 5 to 15 knots veering northeast in the
late evening and early morning, then veering southeast 5 to 15 knots
after midnight. partly cloudy. waves around 1 foot. 
.friday...south winds 15 to 20 knots. mostly sunny. waves 2 to
4 feet. 
.friday night...south winds 15 to 20 knots veering southwest after
midnight. rain showers likely and a slight chance of thunderstorms.
waves 2 to 4 feet. 
.saturday...northwest winds 15 to 25 knots increasing to 30 knots
early in the afternoon. mostly sunny. waves 3 to 5 feet. 
.sunday...northwest winds to 30 knots. sunny. waves 4 to 6 feet. 
.monday...northeast winds around 10 knots backing northwest early in
the afternoon. sunny. waves around 1 foot. 

$$

fzus53 kgrr 201336
nshgrr
expires:202608202100;;051500

nearshore marine forecast
national weather service grand rapids mi
936 am edt thu aug 20 2026

for waters within five nautical miles of shore on lake michigan


lmz848-202100-
whitehall to pentwater mi-
936 am edt thu aug 20 2026

.rest of today...north winds 5 to 10 knots backing northwest 10 to
15 knots early in the afternoon. sunny. waves 1 foot or less. 
.tonight...west winds 5 to 15 knots backing southeast in the late
evening and overnight. partly cloudy. waves 1 foot or less. 
.friday...south winds 15 to 25 knots. partly sunny. waves 1 to
2 feet building to 2 to 4 feet in the late morning and afternoon. 
.friday night...south winds 10 to 20 knots veering west after
midnight. rain showers likely and a slight chance of thunderstorms.
waves 2 to 4 feet. 
.saturday...northwest winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.sunday...north winds to 30 knots. sunny. waves 4 to 6 feet. 
.monday...north winds around 10 knots backing northwest in the late
morning and afternoon. sunny. waves 1 to 2 feet. 

$$

fzus53 kgrr 201336
nshgrr
expires:202608202100;;051499

nearshore marine forecast
national weather service grand rapids mi
936 am edt thu aug 20 2026

for waters within five nautical miles of shore on lake michigan


lmz849-202100-
pentwater to manistee mi-
936 am edt thu aug 20 2026

.rest of today...southwest winds 5 to 10 knots veering west early in
the afternoon. mostly sunny. waves 1 foot or less. 
.tonight...west winds 5 to 15 knots backing southeast in the late
evening and overnight. partly cloudy. waves 1 foot or less. 
.friday...south winds 15 to 25 knots. partly sunny with a slight
chance of rain showers. waves 1 to 3 feet building to 3 to 5 feet in
the late morning and afternoon. 
.friday night...south winds 15 to 25 knots decreasing to 5 to
15 knots in the late evening and early morning, then veering west
after midnight. partly cloudy with a chance of rain showers and a
slight chance of thunderstorms. waves 3 to 5 feet subsiding to 1 to
3 feet after midnight. 
.saturday...northwest winds 10 to 20 knots. mostly sunny. waves 2 to
4 feet. 
.sunday...north winds 15 to 25 knots. sunny. waves 3 to 5 feet. 
.monday...north winds 5 to 15 knots backing west early in the
afternoon. sunny. waves 1 to 2 feet. 

$$

fzus53 kgrr 201336
nshgrr
expires:202608202100;;051504

nearshore marine forecast
national weather service grand rapids mi
936 am edt thu aug 20 2026

for waters within five nautical miles of shore on lake michigan


lmz844-202100-
st joseph to south haven mi-
936 am edt thu aug 20 2026

.rest of today...north winds 10 to 15 knots. sunny. waves 1 foot or
less. 
.tonight...north winds 10 to 15 knots veering southeast 5 to
10 knots after midnight. mostly clear. waves around 1 foot. 
.friday...south winds around 10 knots veering southwest early in the
afternoon. mostly sunny. waves 1 foot or less. 
.friday night...southwest winds 10 to 15 knots. partly cloudy with
rain showers likely and a slight chance of thunderstorms. waves
around 1 foot. 
.saturday...west winds 15 to 20 knots veering northwest 20 to
25 knots in the late morning and afternoon. mostly sunny with rain
showers likely and a slight chance of thunderstorms. waves 2 to
4 feet building to 3 to 5 feet in the late morning and afternoon. 
.sunday...north winds 15 to 25 knots. sunny. waves 4 to 6 feet. 
.monday...east winds 5 to 10 knots backing northwest early in the
afternoon. sunny. waves 1 to 2 feet. 

$$

fzus53 kgrr 201336
nshgrr
expires:202608202100;;051503

nearshore marine forecast
national weather service grand rapids mi
936 am edt thu aug 20 2026

for waters within five nautical miles of shore on lake michigan


lmz845-202100-
south haven to holland mi-
936 am edt thu aug 20 2026

.rest of today...northeast winds around 10 knots backing north early
in the afternoon. sunny. waves 1 foot or less. 
.tonight...north winds 5 to 15 knots veering southeast after
midnight. mostly clear. waves around 1 foot. 
.friday...south winds 10 to 15 knots veering southwest early in the
afternoon. mostly sunny. waves around 1 foot. 
.friday night...southwest winds 10 to 15 knots. partly cloudy with a
chance of showers and thunderstorms. waves 1 to 2 feet. 
.saturday...northwest winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.sunday...north winds 15 to 25 knots backing northwest to 30 knots
early in the afternoon. sunny. waves 4 to 6 feet. 
.monday...northeast winds 5 to 10 knots backing northwest early in
the afternoon. sunny. waves around 1 foot. 

$$

fzus53 kiwx 201546
nshiwx
expires:202608202015;;055289

nearshore marine forecast
national weather service northern indiana
1146 am edt thu aug 20 2026

for waters within five nautical miles of shore on lake michigan


lmz043-046-202015-
new buffalo mi to st joseph mi-michigan city in to new buffalo mi-
1146 am edt thu aug 20 2026

.this afternoon...north winds 5 to 10 knots. sunny. waves 1 foot
or less. 
.tonight...north winds 10 knots or less becoming southeast.
partly cloudy. waves around 1 foot. 
.friday...south winds less than 10 knots becoming southwest.
mostly sunny. waves 1 foot or less. 
.friday night...south winds 5 to 10 knots becoming southwest. a
slight chance of showers and thunderstorms in the evening, then
showers likely with a chance of thunderstorms overnight. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 63 degrees and at michigan
city is 64 degrees.

$$

fzus53 klot 201440
nshlot
expires:202608202115;;053379

nearshore marine forecast
national weather service chicago/romeoville il
940 am cdt thu aug 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>745-202115-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
940 am cdt thu aug 20 2026

.rest of today...north winds 10 to 15 kt. sunny. waves 2 to 4 ft 
subsiding to 1 to 3 ft. 
.tonight...northeast winds around 10 kt becoming southeast
overnight. mostly clear in the evening, then becoming partly
cloudy. waves 1 to 3 ft. 
.friday...south winds around 10 kt becoming southwest. chance of
showers and thunderstorms in the afternoon. waves around 1 ft. 
.friday night...southwest winds 10 to 15 kt. chance of showers
and thunderstorms in the evening, then slight chance of showers
and thunderstorms overnight. waves 1 to 2 ft.  

$$

fzus53 klot 201440
nshlot
expires:202608202115;;053378

nearshore marine forecast
national weather service chicago/romeoville il
940 am cdt thu aug 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-
940 am cdt thu aug 20 2026

.rest of today...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. sunny. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.tonight...east winds around 10 kt becoming south overnight.
mostly clear in the evening, then becoming partly cloudy. waves
1 to 3 ft subsiding to around 1 ft. 
.friday...southwest winds 10 to 15 kt becoming south. chance of
showers and slight chance of thunderstorms in the morning, then
chance of showers and thunderstorms in the afternoon. waves 1 to
2 ft. 
.friday night...southwest winds around 10 kt becoming west
overnight. chance of showers and thunderstorms in the evening.
waves 1 to 2 ft.  

$$

fzus53 kmkx 201610
nshmkx
expires:202608202200;;056105

nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt thu aug 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 thu aug 20 2026

.rest of today...northeast wind 5 to 10 knots. sunny. waves
around 1 foot. 
.tonight...east wind 5 to 10 knots veering south late in the
evening, then veering southwest after midnight becoming southwest
5 to 10 knots early in the morning. mostly clear. waves around
1 foot. 
.friday...southwest wind 5 to 10 knots rising to 10 to 15 knots
late in the morning, then backing south early in the afternoon
becoming south 10 to 15 knots late in the afternoon. chance of
showers through the day. slight chance of thunderstorms in the
afternoon. waves around 1 foot. 
.friday night...south wind 10 to 15 knots becoming southwest 5 to
10 knots late in the evening, then veering west after midnight
becoming northwest 10 to 15 knots early in the morning. slight
chance of thunderstorms through around midnight. chance of
showers through the night. waves 1 to 2 feet. 

$$

fzus53 kmkx 201610
nshmkx
expires:202608202200;;056103

nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt thu aug 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 thu aug 20 2026

.rest of today...east wind 5 to 10 knots veering southeast late
in the afternoon. sunny. waves around 1 foot. 
.tonight...south wind 5 to 10 knots veering southwest after
midnight. partly cloudy. waves around 1 foot. 
.friday...southwest wind 10 to 15 knots backing south in the
afternoon. chance of showers through the day. chance of
thunderstorms in the afternoon. waves around 1 foot. 
.friday night...southwest wind 10 to 15 knots easing to 5 to
10 knots late in the evening, then becoming west 10 to 15 knots
after midnight veering northwest early in the morning. chance of
thunderstorms through around midnight. chance of showers through
the night. waves 1 to 2 feet. 

$$

fzus53 kmkx 201610
nshmkx
expires:202608202200;;056102

nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt thu aug 20 2026

for waters within five nautical miles of shore on lake michigan


lmz643-202200-
sheboygan to port washington wi-
1110 am cdt thu aug 20 2026

.rest of today...southeast wind 5 to 15 knots veering south 10 to
15 knots late in the afternoon. sunny. waves around 1 foot. 
.tonight...south wind 10 to 15 knots veering southwest after
midnight. partly cloudy. waves around 1 foot. 
.friday...southwest wind 10 to 15 knots becoming southwest 10 to
15 knots with gusts to around 20 knots late in the morning, then
becoming south 15 to 20 knots early in the afternoon becoming
10 to 20 knots late in the afternoon. chance of showers through
the day. chance of thunderstorms in the afternoon. waves 1 to
2 feet building to 2 to 4 feet in the afternoon. 
.friday night...south wind 10 to 15 knots becoming southwest 5 to
10 knots late in the evening, then becoming west 10 to 15 knots
after midnight veering northwest early in the morning. chance of
thunderstorms through around midnight. chance of showers through
the night. waves 2 to 4 feet subsiding to 1 to 2 feet in the late
evening and overnight. 

$$

fzus53 kmkx 201610
nshmkx
expires:202608202200;;056104

nearshore marine forecast
national weather service milwaukee/sullivan wi
1110 am cdt thu aug 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 thu aug 20 2026

.rest of today...northeast wind 5 to 10 knots veering east late
in the afternoon. sunny. waves around 1 foot. 
.tonight...southeast wind 5 to 10 knots veering southwest early
in the morning. partly cloudy. waves around 1 foot. 
.friday...southwest wind 10 to 15 knots backing south in the
afternoon. chance of showers through the day. chance of
thunderstorms in the afternoon. waves around 1 foot. 
.friday night...south wind 10 to 15 knots veering northwest early
in the morning. chance of thunderstorms through around midnight.
chance of showers through the night. waves 1 to 2 feet. 

$$