fzus53 kapx 180554
nshapx
expires:202604182200;;562806

nearshore marine forecast
national weather service gaylord mi
154 am edt sat apr 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.


lmz346-182200-
manistee to point betsie mi-
154 am edt sat apr 18 2026

...small craft advisory in effect through late sunday night...

.today...west wind 15 to 20 knots. rain showers likely early in
the morning, then slight chance of showers in the morning. waves
2 to 4 feet. 
.tonight...west wind 10 to 20 knots. partly cloudy. waves 3 to
5 feet. 
.sunday...northwest wind 10 to 15 knots, gusts to 25 knots. 
mostly sunny. waves 2 to 4 feet. 
.sunday night...north wind 5 to 10 knots. mostly clear. waves
2 feet or less. 

see the open lakes forecast for days 3 through 5.

$$

fzus53 kgrb 180625
nshgrb
expires:202604181000;;564609

nearshore marine forecast
national weather service green bay wi
124 am cdt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz542-543-181000-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
124 am cdt sat apr 18 2026

...dense fog advisory in effect until 4 am cdt early this
morning...
...small craft advisory in effect until 10 am cdt this morning...

.rest of the night...sw wind 10 to 20 kts veering w 15 to 25 kts
after midnight. waves 4 to 7 ft. patchy dense fog. showers
likely. 
.saturday...w wind 15 to 25 kts. waves 2 to 4 ft subsiding to
1 to 3 ft in the afternoon. a slight chance of rain and snow
showers. 
.saturday night...w wind 15 to 25 kts decreasing to 10 to 15 kts
in the late evening and overnight. waves 1 to 3 ft. mostly clear.
a small craft advisory may be needed. 
.sunday...nw wind 10 to 15 kts veering n early in the afternoon.
waves 2 ft or less. a chance of flurries in the morning. a chance
of sprinkles.  

$$

fzus53 kgrr 180623
nshgrr
expires:202604180800;;564484

nearshore marine forecast
national weather service grand rapids mi
223 am edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz848-180800-
whitehall to pentwater mi-
223 am edt sat apr 18 2026

...small craft advisory in effect through sunday morning...

.rest of tonight...southwest winds to 30 knots. rain showers likely
and a slight chance of thunderstorms. waves 3 to 5 feet. 
.saturday...west winds to 30 knots. partly sunny with a chance of
rain showers. waves 4 to 6 feet. 
.saturday night...west winds around 25 knots. partly cloudy. waves
3 to 5 feet. 
.sunday...northwest winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.sunday night...north winds 10 to 20 knots veering northeast after
midnight. mostly clear. waves 2 to 3 feet. 
.monday...east winds 5 to 10 knots veering southwest 10 to 15 knots
in the late morning and afternoon. sunny. waves around 1 foot. 
.tuesday...south winds to 30 knots decreasing to 15 to 20 knots
early in the afternoon. mostly sunny. waves 6 to 8 feet. 
.wednesday...northeast winds 10 to 15 knots backing northwest early
in the afternoon. sunny. waves around 1 foot. 

$$

fzus53 kgrr 180623
nshgrr
expires:202604180800;;564485

nearshore marine forecast
national weather service grand rapids mi
223 am edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz847-180800-
grand haven to whitehall mi-
223 am edt sat apr 18 2026

...small craft advisory in effect through sunday morning...

.rest of tonight...southwest winds to 30 knots. rain showers and a
slight chance of thunderstorms. waves 2 to 4 feet. 
.saturday...west winds to 30 knots. partly sunny with a chance of
rain showers. waves 4 to 6 feet. 
.saturday night...west winds around 25 knots. partly cloudy. waves
4 to 6 feet. 
.sunday...northwest winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.sunday night...north winds 10 to 20 knots veering northeast after
midnight. mostly clear. waves 1 to 3 feet.
.monday...northeast winds around 10 knots backing west in the late
morning and early afternoon, then backing southwest early in the
afternoon. sunny. waves 1 foot or less. 
.tuesday...south winds to 30 knots. mostly sunny. waves 5 to 7 feet.
.wednesday...northeast winds around 10 knots backing northwest early
in the afternoon. sunny. waves 1 foot or less. 

$$

fzus53 kgrr 180623
nshgrr
expires:202604180800;;564486

nearshore marine forecast
national weather service grand rapids mi
223 am edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz846-180800-
holland to grand haven mi-
223 am edt sat apr 18 2026

...small craft advisory in effect through sunday morning...

.rest of tonight...southwest winds to 30 knots. rain showers likely
and a chance of thunderstorms. waves 2 to 4 feet. 
.saturday...west winds to 30 knots. partly sunny with a chance of
rain showers. waves 4 to 6 feet. 
.saturday night...west winds around 25 knots. partly cloudy. waves
4 to 6 feet. 
.sunday...west winds 20 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.sunday night...northwest winds 15 to 20 knots veering north 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. 
.monday...northeast winds around 10 knots backing north in the late
morning and early afternoon, then backing southwest early in the
afternoon. sunny. waves around 1 foot. 
.tuesday...southwest winds to 30 knots. mostly sunny. waves 4 to
6 feet. 
.wednesday...northeast winds 10 to 15 knots backing north early in
the afternoon. sunny. waves around 1 foot. 

$$

fzus53 kgrr 180623
nshgrr
expires:202604180800;;564488

nearshore marine forecast
national weather service grand rapids mi
223 am edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz844-180800-
st joseph to south haven mi-
223 am edt sat apr 18 2026

...small craft advisory in effect through sunday morning...

.rest of tonight...southwest winds 20 to 25 knots. rain showers and
a chance of thunderstorms. waves 2 to 4 feet. 
.saturday...west winds 20 to 25 knots. partly sunny with a chance of
rain showers. waves 3 to 5 feet. 
.saturday night...west winds 20 to 25 knots. partly cloudy. waves
3 to 5 feet. 
.sunday...west winds 15 to 20 knots. mostly sunny. waves 3 to
5 feet. 
.sunday night...northwest winds 10 to 20 knots veering northeast
around 10 knots after midnight. mostly clear. waves 1 to 3 feet. 
.monday...northeast winds 5 to 10 knots backing northwest early in
the afternoon. sunny. waves 1 to 2 feet. 
.tuesday...southwest winds 15 to 25 knots. mostly sunny. waves 2 to
4 feet. 
.wednesday...northeast winds 10 to 15 knots backing north 5 to
10 knots early in the afternoon. sunny. waves around 1 foot. 

$$

fzus53 kgrr 180623
nshgrr
expires:202604180800;;564487

nearshore marine forecast
national weather service grand rapids mi
223 am edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz845-180800-
south haven to holland mi-
223 am edt sat apr 18 2026

...small craft advisory in effect through sunday morning...

.rest of tonight...southwest winds around 25 knots. rain showers and
a chance of thunderstorms. waves 2 to 3 feet. 
.saturday...west winds to 30 knots. partly sunny with a chance of
rain showers. waves 4 to 6 feet. 
.saturday night...west winds 20 to 25 knots. partly cloudy. waves
3 to 5 feet. 
.sunday...west winds 20 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.sunday night...northwest winds 10 to 20 knots veering northeast
after midnight. mostly clear. waves 1 to 3 feet.
.monday...northeast winds 5 to 10 knots backing north in the late
morning and early afternoon, then backing west early in the
afternoon. sunny. waves around 1 foot. 
.tuesday...southwest winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.wednesday...northeast winds 10 to 15 knots backing north early in
the afternoon. sunny. waves around 1 foot. 

$$

fzus53 kgrr 180623
nshgrr
expires:202604180800;;564483

nearshore marine forecast
national weather service grand rapids mi
223 am edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz849-180800-
pentwater to manistee mi-
223 am edt sat apr 18 2026

...small craft advisory in effect through sunday morning...

.rest of tonight...southwest winds 15 to 25 knots. rain showers
likely and a slight chance of thunderstorms. waves 2 to 4 feet. 
.saturday...west winds to 30 knots. partly sunny with a slight
chance of rain showers. waves 3 to 5 feet. 
.saturday night...west winds 15 to 25 knots. partly cloudy. waves
3 to 5 feet. 
.sunday...northwest winds 15 to 25 knots veering north early in the
afternoon. mostly sunny. waves 3 to 5 feet. 
.sunday night...north winds 10 to 15 knots. mostly clear. waves 2 to
3 feet. 
.monday...northwest winds around 10 knots backing southwest in the
late morning and afternoon. sunny. waves 1 to 2 feet. 
.tuesday...south winds to 30 knots decreasing to 15 to 20 knots
early in the afternoon. mostly sunny. waves 5 to 7 feet. 
.wednesday...northeast winds 5 to 15 knots backing northwest early
in the afternoon. sunny. waves 1 to 2 feet. 

$$

fzus53 kiwx 180336
nshiwx
expires:202604180815;;557646

nearshore marine forecast
national weather service northern indiana
1136 pm edt fri apr 17 2026

for waters within five nautical miles of shore on lake michigan


lmz043-180815-
new buffalo mi to st joseph mi-
1136 pm edt fri apr 17 2026

...tornado watch 133 in effect until 3 am edt saturday...
...small craft advisory in effect through late saturday night...

.rest of tonight...south winds 15 to 20 knots becoming southwest.
gusts up to 25 knots. showers with a chance of thunderstorms 
after midnight. showers likely with a chance of thunderstorms 
late. some thunderstorms may be severe with damaging winds, large 
hail, and tornadoes late this evening. waves 1 to 3 feet. 
.saturday...west winds 15 to 20 knots diminishing to 10 to
15 knots. gusts up to 25 knots. a chance of showers in the
morning. waves 2 to 4 feet. 
.saturday night...west winds 10 to 15 knots. mostly clear. waves
2 to 4 feet. 
.sunday...west winds 10 to 15 knots becoming northwest. mostly
sunny. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 49 degrees and at michigan
city is 48 degrees.

$$

fzus53 kiwx 180336
nshiwx
expires:202604180815;;557645

nearshore marine forecast
national weather service northern indiana
1136 pm edt fri apr 17 2026

for waters within five nautical miles of shore on lake michigan


lmz046-180815-
michigan city in to new buffalo mi-
1136 pm edt fri apr 17 2026

...tornado watch 133 in effect until 3 am edt saturday...
...small craft advisory in effect through late saturday night...

.rest of tonight...south winds 15 to 20 knots becoming southwest.
gusts up to 25 knots. showers with thunderstorms likely. showers 
likely with a chance of thunderstorms late. some thunderstorms may
be severe with damaging winds, large hail, and tornadoes late 
this evening. waves 1 to 3 feet. 
.saturday...west winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely in the morning. waves 2 to 4 feet. 
.saturday night...west winds 10 to 15 knots. mostly clear. waves
2 to 4 feet. 
.sunday...west winds around 10 knots becoming northwest. sunny in
the morning, then becoming partly sunny. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 49 degrees and at michigan
city is 48 degrees.

$$

fzus53 klot 180438 aaa
nshlot
expires:202604180915;;560227

nearshore marine forecast...updated
national weather service chicago/romeoville il
1138 pm cdt fri apr 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>745-180915-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
1138 pm cdt fri apr 17 2026

...small craft advisory in effect through saturday evening...

.rest of tonight...south winds 20 to 25 kt becoming southwest
late. showers and a chance of thunderstorms. waves 2 to 4 ft. 
.saturday...northwest winds 20 to 25 kt. chance of showers in 
the morning. waves 3 to 5 ft. 
.saturday night...northwest winds 15 to 20 kt becoming west 10 
to 15 kt. partly cloudy in the evening then clearing. waves 2 to 
4 ft. 
.sunday...west winds 10 to 20 kt becoming northwest in the
afternoon. mostly sunny in the morning, then becoming mostly
cloudy. waves 1 to 3 ft.  

$$

fzus53 klot 180438 aaa
nshlot
expires:202604180915;;560226

nearshore marine forecast...updated
national weather service chicago/romeoville il
1138 pm cdt fri apr 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>742-180915-
winthrop harbor to wilmette harbor il-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
1138 pm cdt fri apr 17 2026

...small craft advisory in effect through saturday evening...

.rest of tonight...southwest winds 20 to 25 kt becoming west 
late. showers and a chance of thunderstorms. waves 2 to 4 ft.
.saturday...northwest winds 20 to 25 kt becoming west. slight 
chance of showers in the morning. waves 2 to 4 ft. 
.saturday night...west winds 15 to 20 kt diminishing to 10 to
15 kt. partly cloudy in the evening, then becoming mostly clear.
waves 1 to 3 ft. 
.sunday...west winds 10 to 15 kt becoming northwest 15 to 20 kt
in the afternoon. slight chance of showers in the afternoon.
waves 1 to 2 ft.  

$$

fzus53 kmkx 180610
nshmkx
expires:202604180900;;563698

nearshore marine forecast
national weather service milwaukee/sullivan wi
110 am cdt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz646-180900-
wind point wi to winthrop harbor il-
110 am cdt sat apr 18 2026

...dense fog advisory in effect until 4 am cdt early this
morning...
...small craft advisory in effect through this evening...

.rest of tonight...southwest wind 10 to 15 knots becoming west
15 to 20 knots early in the morning. gusts up to 25 knots. patchy
dense fog through the night. showers after midnight. rain showers
likely early in the morning. waves 2 to 4 feet. 
.saturday...west wind 15 to 20 knots. gusts up to 25 knots.
mostly cloudy in the morning then becoming mostly sunny. waves
1 to 2 feet. 
.saturday night...west wind 15 to 20 knots with gusts to around
25 knots becoming 10 to 20 knots late in the evening, then
becoming 10 to 15 knots after midnight becoming west 10 to
15 knots early in the morning. partly cloudy through around
midnight then becoming clear. waves 1 to 2 feet. 
.sunday...west wind 10 to 15 knots veering northwest with gusts
to around 20 knots late in the afternoon. slight chance of
showers in the afternoon. waves around 1 foot. 

$$

fzus53 kmkx 180610
nshmkx
expires:202604180900;;563697

nearshore marine forecast
national weather service milwaukee/sullivan wi
110 am cdt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz645-180900-
north point light to wind point wi-
110 am cdt sat apr 18 2026

...dense fog advisory in effect until 4 am cdt early this
morning...
...small craft advisory in effect through this evening...

.rest of tonight...southwest wind 10 to 15 knots becoming west
15 to 20 knots early in the morning. gusts up to 25 knots. patchy
dense fog through the night. showers likely after midnight.
chance of showers early in the morning. waves 2 to 4 feet. 
.saturday...northwest wind 15 to 20 knots backing west late in
the afternoon. gusts up to 25 knots. partly sunny. waves 2 to
4 feet subsiding to 1 to 2 feet in the afternoon. 
.saturday night...west wind 15 to 20 knots with gusts to around
25 knots easing to 10 to 15 knots after midnight, then becoming
west 10 to 15 knots early in the morning. partly cloudy through
around midnight then clearing. waves 1 to 2 feet. 
.sunday...west wind 10 to 15 knots veering northwest with gusts
to around 20 knots late in the afternoon. slight chance of
showers in the afternoon. waves 1 to 2 feet. 

$$

fzus53 kmkx 180610
nshmkx
expires:202604180900;;563696

nearshore marine forecast
national weather service milwaukee/sullivan wi
110 am cdt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz644-180900-
port washington to north point light wi-
110 am cdt sat apr 18 2026

...dense fog advisory in effect until 4 am cdt early this
morning...
...small craft advisory in effect through this evening...

.rest of tonight...southwest wind 10 to 15 knots becoming west
15 to 20 knots early in the morning. gusts up to 25 knots. patchy
dense fog through the night. showers likely after midnight.
chance of showers early in the morning. waves 2 to 4 feet. 
.saturday...west wind 15 to 20 knots becoming 10 to 20 knots late
in the morning, then becoming west 10 to 20 knots in the
afternoon. gusts up to 25 knots. partly sunny. waves 2 to 4 feet
subsiding to 1 to 3 feet in the afternoon. 
.saturday night...west wind 15 to 20 knots with gusts to around
25 knots easing to 10 to 15 knots after midnight, then becoming
west 10 to 15 knots early in the morning. partly cloudy through
around midnight then becoming clear. waves 1 to 2 feet. 
.sunday...west wind 10 to 15 knots veering northwest with gusts
to around 20 knots late in the afternoon. slight chance of
showers in the afternoon. waves 1 to 2 feet. 

$$

fzus53 kmkx 180610
nshmkx
expires:202604180900;;563695

nearshore marine forecast
national weather service milwaukee/sullivan wi
110 am cdt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz643-180900-
sheboygan to port washington wi-
110 am cdt sat apr 18 2026

...dense fog advisory in effect until 4 am cdt early this
morning...
...small craft advisory in effect through this evening...

.rest of tonight...southwest wind 10 to 15 knots becoming west
15 to 20 knots early in the morning. gusts up to 25 knots. patchy
dense fog through the night. showers likely after midnight.
chance of showers early in the morning. waves 3 to 4 feet. 
.saturday...west wind 10 to 20 knots. gusts up to 30 knots.
partly sunny. waves 2 to 4 feet subsiding to 1 to 3 feet early in
the afternoon, then building to 2 to 4 feet late in the
afternoon. 
.saturday night...west wind 10 to 20 knots with gusts to around
25 knots becoming 15 to 20 knots late in the evening, then easing
to 10 to 15 knots after midnight. mostly clear. waves 1 to
2 feet. 
.sunday...west wind 10 to 15 knots veering north late in the
afternoon. slight chance of showers in the afternoon. waves
around 1 foot. 

$$