fzus53 kapx 181837
nshapx
expires:202608190245;;949864

nearshore marine forecast
national weather service gaylord mi
237 pm edt tue aug 18 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.


lmz346-190245-
manistee to point betsie mi-
237 pm edt tue aug 18 2026

...small craft advisory in effect until 11 pm edt this evening...

.through early evening...southwest wind 10 to 15 knots. showers
likely and scattered thunderstorms. waves 2 to 3 feet. 
.tonight...north wind 10 to 15 knots. scattered thunderstorms and
a chance of showers. waves 2 feet or less. 
.wednesday...light winds. sunny. waves 2 feet or less. 
.wednesday night...light winds. mostly clear. waves 2 feet or
less. 
.thursday...southwest wind 5 to 10 knots. sunny. waves 2 feet or
less. 

winds and waves higher in the vicinity of thunderstorms.

see the open lakes forecast for days 3 through 5.

$$

fzus53 kgrb 181959
nshgrb
expires:202608182200;;952707

nearshore marine forecast
national weather service green bay wi
259 pm cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz541>543-182200-
rock island passage to sturgeon bay wi-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
259 pm cdt tue aug 18 2026

.this afternoon...sw wind 10 to 15 kts. waves 2 ft or less. a
chance of showers and thunderstorms. 
.tonight...n wind 5 to 10 kts backing nw after midnight. waves
2 ft or less. a slight chance of showers and thunderstorms in the
evening. 
.wednesday...nw wind 5 to 10 kts backing s early in the
afternoon. waves 2 ft or less. sunny.
.wednesday night...s wind 5 to 10 kts backing e, then veering s
after midnight. waves 2 ft or less. mostly clear.  

$$

fzus53 kgrb 181548
nshgrb
expires:202608182200;;941571

nearshore marine forecast
national weather service green bay wi
issued by national weather service milwaukee/sullivan wi
1047 am cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz542-543-182200-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
1047 am cdt tue aug 18 2026

.this afternoon...waves 2 ft or less. a chance of light rain and
thunderstorms in the afternoon. 
.tonight...waves 2 ft or less. a chance of light rain and
thunderstorms in the evening. 
.wednesday...waves 2 ft or less. mostly sunny. 
.wednesday night...waves 2 ft or less. mostly clear.  

$$

fzus53 kgrr 181936
nshgrr
expires:202608190800;;952185

nearshore marine forecast
national weather service grand rapids mi
336 pm edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz845-190800-
south haven to holland mi-
336 pm edt tue aug 18 2026

.through early evening...southwest winds around 15 knots. mostly
cloudy. waves 2 to 4 feet. 
.tonight...southwest winds 10 to 20 knots veering west in the late
evening and overnight. mostly cloudy in the evening then becoming
partly cloudy. a chance of showers and thunderstorms. waves 2 to
4 feet. 
.wednesday...north winds 5 to 15 knots. partly sunny. waves 1 to
3 feet. 
.wednesday night...north winds 5 to 15 knots veering east after
midnight. partly cloudy. waves around 1 foot. 
.thursday...east winds 5 to 10 knots veering southeast in the late
morning and early afternoon, then veering west early in the
afternoon. sunny. waves less than 1 foot. 
.thursday night...west winds 5 to 10 knots backing south in the late
evening and overnight. mostly clear. waves less than 1 foot. 
.friday...southwest winds 10 to 15 knots. mostly sunny. waves 1 to
2 feet. 
.saturday...northwest winds around 20 knots becoming 20 to 25 knots
early in the afternoon. mostly sunny. waves 3 to 5 feet. 
.sunday...north winds 15 to 20 knots backing northwest to 30 knots
early in the afternoon. mostly sunny. waves 4 to 6 feet. 

$$

fzus53 kgrr 181936
nshgrr
expires:202608190800;;952186

nearshore marine forecast
national weather service grand rapids mi
336 pm edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz844-190800-
st joseph to south haven mi-
336 pm edt tue aug 18 2026

.through early evening...southwest winds around 15 knots. mostly
cloudy. waves 1 to 3 feet. 
.tonight...southwest winds 15 to 20 knots veering west 10 to
15 knots after midnight. partly cloudy with a chance of showers and
thunderstorms. waves 2 to 4 feet. 
.wednesday...northwest winds 5 to 10 knots. partly sunny. waves 1 to
3 feet. 
.wednesday night...north winds 5 to 10 knots veering east after
midnight. partly cloudy. waves around 1 foot. 
.thursday...east winds around 5 knots backing northwest early in the
afternoon. sunny. waves 1 foot or less. 
.thursday night...northwest winds 5 to 10 knots backing south in the
late evening and overnight. mostly clear. waves less than 1 foot. 
.friday...southwest winds 10 to 15 knots. mostly sunny. waves 1 foot
or less. 
.saturday...northwest winds 15 to 20 knots. mostly sunny. 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 3 to 5 feet. 

$$

fzus53 kgrr 181936
nshgrr
expires:202608190800;;952184

nearshore marine forecast
national weather service grand rapids mi
336 pm edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz846-190800-
holland to grand haven mi-
336 pm edt tue aug 18 2026

...small craft advisory in effect until 11 pm edt this evening...

.through early evening...southwest winds 15 to 20 knots. mostly
cloudy. waves 2 to 4 feet. 
.tonight...southwest winds 10 to 20 knots veering west in the late
evening and overnight. mostly cloudy in the evening then becoming
partly cloudy. a chance of showers and thunderstorms. waves 2 to
4 feet. 
.wednesday...north winds 5 to 15 knots. mostly sunny. waves 1 to
3 feet. 
.wednesday night...north winds 10 to 15 knots veering east 5 to
10 knots after midnight. mostly clear. waves 1 to 2 feet. 
.thursday...east winds 5 to 10 knots veering west early in the
afternoon. sunny. waves less than 1 foot. 
.thursday night...west winds 5 to 15 knots backing south in the late
evening and overnight. partly cloudy. waves 1 foot or less. 
.friday...southwest winds 10 to 20 knots. partly sunny. waves 1 to
3 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. mostly sunny. waves 3 to 6 feet.

$$

fzus53 kgrr 181936
nshgrr
expires:202608190800;;952183

nearshore marine forecast
national weather service grand rapids mi
336 pm edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz847-190800-
grand haven to whitehall mi-
336 pm edt tue aug 18 2026

...small craft advisory in effect until 11 pm edt this evening...

.through early evening...southwest winds 15 to 20 knots. mostly
cloudy. waves 2 to 4 feet. 
.tonight...southwest winds 10 to 20 knots veering northwest after
midnight. mostly cloudy in the evening then becoming partly cloudy.
a chance of showers and thunderstorms. waves 2 to 4 feet. 
.wednesday...north winds around 10 knots backing northwest early in
the afternoon. mostly sunny. waves 1 to 3 feet. 
.wednesday night...north winds 5 to 15 knots veering east after
midnight. mostly clear. waves 1 to 2 feet. 
.thursday...east winds 5 to 10 knots veering southwest early in the
afternoon. sunny. waves 1 foot or less. 
.thursday night...south winds 10 to 15 knots. partly cloudy. waves
1 to 2 feet. 
.friday...southwest winds 15 to 20 knots. partly sunny. waves 2 to
4 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. 

$$

fzus53 kgrr 181936
nshgrr
expires:202608190800;;952182

nearshore marine forecast
national weather service grand rapids mi
336 pm edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz848-190800-
whitehall to pentwater mi-
336 pm edt tue aug 18 2026

...small craft advisory in effect until 11 pm edt this evening...

.through early evening...southwest winds 15 to 20 knots. mostly
cloudy with a slight chance of showers and thunderstorms. waves 2 to
4 feet. 
.tonight...southwest winds 10 to 20 knots veering northwest after
midnight. mostly cloudy in the evening then becoming partly cloudy.
a chance of showers and thunderstorms. waves 2 to 4 feet. 
.wednesday...north winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. mostly sunny. waves 1 to 3 feet. 
.wednesday night...north winds 5 to 10 knots veering southeast after
midnight. mostly clear. waves 1 foot or less. 
.thursday...southeast winds 5 to 10 knots veering southwest 10 to
15 knots in the late morning and afternoon. sunny. waves 1 foot or
less. 
.thursday night...south winds 10 to 15 knots. partly cloudy. waves
1 to 2 feet. 
.friday...southwest winds 10 to 20 knots backing south 20 to
25 knots early in the afternoon. partly sunny with a chance of rain
showers. waves 2 to 4 feet. 
.saturday...northwest winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.sunday...north winds 15 to 25 knots increasing to 30 knots early in
the afternoon. sunny. waves 4 to 6 feet. 

$$

fzus53 kgrr 181936
nshgrr
expires:202608190800;;952181

nearshore marine forecast
national weather service grand rapids mi
336 pm edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz849-190800-
pentwater to manistee mi-
336 pm edt tue aug 18 2026

...small craft advisory in effect until 11 pm edt this evening...

.through early evening...southwest winds 15 to 20 knots. mostly
cloudy with a chance of rain showers and a slight chance of
thunderstorms. waves 2 to 4 feet. 
.tonight...southwest winds 10 to 20 knots veering north 5 to
15 knots after midnight. mostly cloudy in the evening then becoming
partly cloudy. a chance of showers and thunderstorms. waves 2 to
4 feet. 
.wednesday...north winds 5 to 15 knots. sunny. waves 1 to 2 feet. 
.wednesday night...northeast winds 5 to 10 knots veering southeast
in the late evening and overnight. mostly clear. waves 1 foot or
less. 
.thursday...south winds 5 to 15 knots veering southwest early in the
afternoon. sunny. waves around 1 foot. 
.thursday night...south winds 10 to 15 knots. partly cloudy. waves
1 to 3 feet. 
.friday...southwest winds 15 to 25 knots. partly sunny with a chance
of rain showers. waves 2 to 4 feet building to 3 to 5 feet in the
late morning and afternoon. 
.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. 

$$

fzus53 kiwx 181945
nshiwx
expires:202608190345;;952392

nearshore marine forecast
national weather service northern indiana
345 pm edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz046-190345-
michigan city in to new buffalo mi-
345 pm edt tue aug 18 2026

.tonight...southwest winds around 10 knots becoming west. a
chance of showers and thunderstorms this evening, then showers
likely with a chance of thunderstorms after midnight. waves 1 to
2 feet. 
.wednesday...northwest winds 10 knots or less becoming north. a
slight chance of showers in the morning. waves 1 to 2 feet. 
.wednesday night...north winds 10 knots or less becoming
northeast. partly cloudy. waves around 1 foot. 
.thursday...light and variable winds. sunny. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

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

$$

fzus53 kiwx 181945
nshiwx
expires:202608190345;;952393

nearshore marine forecast
national weather service northern indiana
345 pm edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz043-190345-
new buffalo mi to st joseph mi-
345 pm edt tue aug 18 2026

.tonight...southwest winds 10 to 15 knots becoming west. a slight
chance of showers and thunderstorms early, then showers likely
with a chance of thunderstorms. waves 1 to 3 feet. 
.wednesday...northwest winds 5 to 10 knots becoming north. partly
sunny. waves 1 to 2 feet. 
.wednesday night...north winds 5 to 10 knots becoming light and
variable. partly cloudy. waves around 1 foot. 
.thursday...light and variable winds. sunny. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

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

$$

fzus53 klot 181956
nshlot
expires:202608190315;;952682

nearshore marine forecast
national weather service chicago/romeoville il
256 pm cdt tue aug 18 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>742-190315-
winthrop harbor to wilmette harbor il-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
256 pm cdt tue aug 18 2026

.tonight...southwest winds 10 to 15 kt becoming west. chance of 
showers and thunderstorms. waves 1 to 2 ft. 
.wednesday...north winds around 10 kt becoming northeast in the
afternoon. mostly cloudy. waves 1 to 2 ft. 
.wednesday night...east winds around 10 kt becoming northeast.
mostly cloudy in the evening then clearing. waves 1 to 2 ft. 
.thursday...east winds 5 to 10 kt becoming southeast in the 
afternoon. sunny. waves around 1 ft. 

$$

fzus53 klot 181956
nshlot
expires:202608190315;;952683

nearshore marine forecast
national weather service chicago/romeoville il
256 pm cdt tue aug 18 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>745-190315-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
256 pm cdt tue aug 18 2026

.tonight...southwest winds 10 to 15 kt becoming west. chance of 
showers and thunderstorms. waves 1 to 2 ft. 
.wednesday...northwest winds around 10 kt becoming north in the
afternoon. mostly cloudy. waves 1 to 2 ft. 
.wednesday night...northeast winds around 10 kt becoming around
5 kt. mostly cloudy in the evening, then becoming partly cloudy.
waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt. sunny. waves around 1 ft.


$$

fzus53 kmkx 182010
nshmkx
expires:202608190900;;953806

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 pm cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz643-190900-
sheboygan to port washington wi-
310 pm cdt tue aug 18 2026

.through early evening...southwest wind 10 to 15 knots. mostly
cloudy with chance of thunderstorms and slight chance of showers.
waves 1 to 2 feet. 
.tonight...southwest wind 10 to 15 knots veering north early in
the morning. chance of showers and thunderstorms in the evening,
then slight chance of showers and thunderstorms late in the
evening. waves around 1 foot. 
.wednesday...north wind 5 to 10 knots veering east late in the
afternoon. sunny. waves around 1 foot. 
.wednesday night...southeast wind 5 to 10 knots veering west
early in the morning. mostly clear. waves around 1 foot. 
.thursday...west wind 5 to 10 knots backing southwest late in the
morning, then becoming south 10 to 15 knots early in the
afternoon becoming south 10 to 15 knots with gusts to around
20 knots late in the afternoon. sunny. waves around 1 foot. 

$$

fzus53 kmkx 182010
nshmkx
expires:202608190900;;953807

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 pm cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz644-190900-
port washington to north point light wi-
310 pm cdt tue aug 18 2026

.through early evening...southwest wind 10 to 15 knots. mostly
cloudy with a 40 percent chance of showers and thunderstorms.
waves around 1 foot. 
.tonight...southwest wind 10 to 15 knots veering west late in the
evening, then veering northwest after midnight easing to 5 to
10 knots early in the morning. chance of showers and
thunderstorms in the evening, then slight chance of showers and
thunderstorms late in the evening. waves around 1 foot. 
.wednesday...north wind 5 to 10 knots veering east late in the
afternoon. sunny. waves around 1 foot. 
.wednesday night...east wind 5 to 10 knots veering southeast late
in the evening, then veering southwest after midnight becoming
west early in the morning. partly cloudy. waves around 1 foot. 
.thursday...west wind 5 knots becoming southwest late in the
morning, then backing south early in the afternoon rising to
10 to 15 knots late in the afternoon. sunny. waves around 1 foot.

$$

fzus53 kmkx 182010
nshmkx
expires:202608190900;;953809

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 pm cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz646-190900-
wind point wi to winthrop harbor il-
310 pm cdt tue aug 18 2026

.through early evening...southwest wind 10 to 15 knots. mostly
cloudy with chance of thunderstorms and slight chance of showers.
waves around 1 foot. 
.tonight...southwest wind 10 to 15 knots veering west late in the
evening, then becoming west 10 to 15 knots after midnight
becoming northwest 5 to 10 knots early in the morning. chance of
showers through around midnight. chance of thunderstorms until
early morning. slight chance of showers after midnight. waves
around 1 foot. 
.wednesday...north wind 5 to 10 knots veering northeast late in
the afternoon. mostly sunny. waves around 1 foot. 
.wednesday night...east wind 5 to 10 knots backing northeast
early in the morning. partly cloudy. waves around 1 foot. 
.thursday...west wind 5 to 10 knots backing south late in the
morning, then becoming south 5 to 10 knots in the afternoon.
sunny. waves around 1 foot. 

$$

fzus53 kmkx 182010
nshmkx
expires:202608190900;;953808

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 pm cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz645-190900-
north point light to wind point wi-
310 pm cdt tue aug 18 2026

.through early evening...southwest wind 10 to 15 knots. mostly
cloudy with a 40 percent chance of showers and thunderstorms.
waves around 1 foot. 
.tonight...southwest wind 10 to 15 knots veering west late in the
evening, then becoming west 10 to 15 knots after midnight
becoming northwest 5 to 10 knots early in the morning. chance of
showers and thunderstorms through around midnight, then slight
chance of showers and thunderstorms after midnight. waves around
1 foot. 
.wednesday...north wind 5 to 10 knots veering northeast late in
the afternoon. mostly sunny. waves around 1 foot. 
.wednesday night...east wind 5 to 10 knots veering southwest
early in the morning. partly cloudy. waves around 1 foot. 
.thursday...west wind 5 to 10 knots backing southwest late in the
morning, then backing south early in the afternoon rising to
10 to 15 knots late in the afternoon. sunny. waves around 1 foot.

$$