fzus53 kapx 181840
nshapx
expires:202604190245;;595248

nearshore marine forecast
national weather service gaylord mi
240 pm 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.


lmz346-190245-
manistee to point betsie mi-
240 pm edt sat apr 18 2026

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

.tonight...west wind 15 to 20 knots decreasing to 5 to 15 knots
early in the morning. mostly cloudy early in the evening then
clearing. waves 3 to 5 feet subsiding to 2 to 4 feet after
midnight. 
.sunday...northwest wind 10 to 15 knots. isolated snow showers.
waves 2 to 4 feet. 
.sunday night...north wind 10 to 15 knots. partly cloudy. waves
2 to 3 feet. 
.monday...southwest wind 10 to 15 knots. sunny. waves 2 feet or
less. 

see the open lakes forecast for days 3 through 5.

$$

fzus53 kgrb 181923
nshgrb
expires:202604190415;;597061

nearshore marine forecast
national weather service green bay wi
223 pm cdt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz542-543-190415-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
223 pm cdt sat apr 18 2026

.tonight...w wind 10 to 20 kts. waves 1 to 3 ft. mostly clear.
.sunday...nw wind 10 to 20 kts. waves 2 ft or less. partly sunny.
.sunday night...n wind 10 to 15 kts backing nw 5 to 10 kts after
midnight. waves 2 ft or less. partly cloudy in the evening then
clearing. 
.monday...sw wind 5 to 10 kts backing s 10 to 15 kts mid-day,
then increasing to 15 to 25 kts early in the afternoon. waves
2 ft or less building to 3 to 5 ft in the afternoon. becoming 
partly cloudy. a small craft advisory may be needed.

$$

fzus53 kgrr 181818
nshgrr
expires:202604190800;;592153

nearshore marine forecast
national weather service grand rapids mi
218 pm edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz845-190800-
south haven to holland mi-
218 pm edt sat apr 18 2026

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

.through early evening...west winds 20 to 25 knots. mostly sunny.
waves 4 to 6 feet. 
.tonight...west winds 15 to 25 knots. partly cloudy. waves 3 to
5 feet. 
.sunday...west winds 15 to 20 knots veering northwest early in the
afternoon. mostly sunny with a slight chance of rain showers. waves
3 to 5 feet. 
.sunday night...north winds 10 to 20 knots veering northeast after
midnight. mostly clear. waves 2 to 4 feet.
.monday...northeast winds 5 to 10 knots backing west early in the
afternoon. sunny. waves around 1 foot. 
.monday night...south winds 5 to 10 knots increasing to 20 to
25 knots. partly cloudy. waves 1 to 2 feet building to 2 to 4 feet
after midnight. 
.tuesday...southwest winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.wednesday...northeast winds 10 to 15 knots backing northwest early
in the afternoon. mostly sunny. waves around 1 foot. 
.thursday...south winds 15 to 20 knots. mostly sunny. waves 1 to
2 feet. 

$$

fzus53 kgrr 181818
nshgrr
expires:202604190800;;592154

nearshore marine forecast
national weather service grand rapids mi
218 pm edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz844-190800-
st joseph to south haven mi-
218 pm edt sat apr 18 2026

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

.through early evening...west winds around 20 knots. mostly sunny.
waves 4 to 6 feet. 
.tonight...west winds 15 to 25 knots. partly cloudy. waves 3 to
5 feet. 
.sunday...west winds 15 to 20 knots veering northwest early in the
afternoon. mostly sunny. waves 2 to 4 feet. 
.sunday night...north winds 10 to 15 knots veering northeast after
midnight. mostly clear. waves 1 to 3 feet. 
.monday...east winds 5 to 10 knots backing northwest early in the
afternoon. sunny. waves 1 to 2 feet. 
.monday night...southeast winds 5 to 10 knots becoming south 15 to
25 knots in the late evening and overnight. partly cloudy. waves
1 to 3 feet. 
.tuesday...south winds 20 to 25 knots veering southwest 15 to
20 knots early in the afternoon. mostly sunny. waves 2 to 4 feet.
.wednesday...northeast winds 10 to 15 knots backing north 5 to
10 knots early in the afternoon. mostly sunny. waves 1 to 2 feet. 
.thursday...south winds 15 to 20 knots. mostly sunny. waves around
1 foot. 

$$

fzus53 kgrr 181818
nshgrr
expires:202604190800;;592152

nearshore marine forecast
national weather service grand rapids mi
218 pm edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz846-190800-
holland to grand haven mi-
218 pm edt sat apr 18 2026

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

.through early evening...west winds 20 to 25 knots. mostly sunny.
waves 4 to 6 feet. 
.tonight...west winds 20 to 25 knots. partly cloudy in the evening
then clearing. waves 4 to 6 feet. 
.sunday...west winds around 20 knots veering northwest early in the
afternoon. mostly sunny. waves 3 to 5 feet. 
.sunday night...north winds 10 to 20 knots veering northeast after
midnight. mostly clear. waves 2 to 4 feet.
.monday...northeast winds 5 to 10 knots backing west in the late
morning and afternoon. sunny. waves 1 foot or less. 
.monday night...south winds 10 to 15 knots increasing to 15 to
25 knots in the late evening and overnight. partly cloudy. waves
2 to 3 feet building to 3 to 5 feet after midnight. 
.tuesday...southwest winds to 30 knots. mostly sunny. waves 4 to
6 feet. 
.wednesday...northeast winds 10 to 15 knots backing northwest early
in the afternoon. sunny. waves 1 foot or less. 
.thursday...south winds 15 to 20 knots. mostly sunny. waves 2 to
3 feet. 

$$

fzus53 kgrr 181818
nshgrr
expires:202604190800;;592151

nearshore marine forecast
national weather service grand rapids mi
218 pm edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz847-190800-
grand haven to whitehall mi-
218 pm edt sat apr 18 2026

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

.through early evening...west winds 20 to 25 knots. mostly sunny.
waves 4 to 6 feet. 
.tonight...west winds 15 to 25 knots. partly cloudy. waves 4 to
6 feet. 
.sunday...west winds 15 to 20 knots veering northwest early in the
afternoon. mostly sunny. waves 3 to 5 feet. 
.sunday night...north winds 10 to 20 knots veering northeast after
midnight. mostly clear. waves 2 to 4 feet subsiding to 1 to 3 feet
in the late evening and overnight. 
.monday...east winds 5 to 10 knots veering southwest 10 to 15 knots
in the late morning and afternoon. sunny. waves 1 foot or less. 
.monday night...south winds to 30 knots. partly cloudy. waves 1 to
2 feet building to 4 to 6 feet in the late evening and overnight. 
.tuesday...south winds to 30 knots. mostly sunny. waves 5 to 7 feet.
.wednesday...northeast winds 5 to 10 knots backing northwest early
in the afternoon. sunny. waves 1 foot or less. 
.thursday...south winds 15 to 20 knots. mostly sunny. waves 1 to
3 feet building to 2 to 4 feet in the late morning and afternoon. 

$$

fzus53 kgrr 181818
nshgrr
expires:202604190800;;592150

nearshore marine forecast
national weather service grand rapids mi
218 pm edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz848-190800-
whitehall to pentwater mi-
218 pm edt sat apr 18 2026

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

.through early evening...west winds 20 to 25 knots. mostly sunny.
waves 4 to 6 feet. 
.tonight...west winds 15 to 25 knots. partly cloudy. waves 4 to
6 feet. 
.sunday...west winds 15 to 20 knots veering north early in the
afternoon. 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...southeast winds 5 to 10 knots veering southwest 10 to
15 knots in the late morning and afternoon. sunny. waves around
1 foot. 
.monday night...south winds to 30 knots. partly cloudy. waves 1 to
3 feet building to 4 to 6 feet in the late evening and overnight. 
.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 around 10 knots backing northwest early
in the afternoon. sunny. waves around 1 foot. 
.thursday...south winds 15 to 25 knots. partly sunny. waves 2 to
4 feet.

$$

fzus53 kgrr 181818
nshgrr
expires:202604190800;;592149

nearshore marine forecast
national weather service grand rapids mi
218 pm edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz849-190800-
pentwater to manistee mi-
218 pm edt sat apr 18 2026

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

.through early evening...west winds 15 to 25 knots. mostly sunny.
waves 3 to 5 feet. 
.tonight...west winds 15 to 25 knots. partly cloudy. waves 4 to
6 feet. 
.sunday...northwest winds 15 to 20 knots veering north early in the
afternoon. mostly sunny. waves 2 to 4 feet. 
.sunday night...north winds 10 to 20 knots. mostly clear. waves 1 to
3 feet. 
.monday...southwest winds 10 to 15 knots. sunny. waves 1 to 2 feet. 
.monday night...south winds to 30 knots. partly cloudy. waves 2 to
3 feet building to 4 to 6 feet in the late evening and overnight. 
.tuesday...south winds to 30 knots becoming southwest 10 to 20 knots
early in the afternoon. sunny. waves 4 to 6 feet. 
.wednesday...northeast winds 5 to 15 knots backing north early in
the afternoon. sunny. waves around 1 foot. 
.thursday...south winds 15 to 25 knots. partly sunny. waves 3 to
5 feet. 

$$

fzus53 kiwx 181434
nshiwx
expires:202604182015;;584071

nearshore marine forecast
national weather service northern indiana
1034 am edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz046-182015-
michigan city in to new buffalo mi-
1034 am edt sat apr 18 2026

...small craft advisory in effect through late tonight...

.rest of today...northwest winds 10 to 20 knots becoming west 10 
to 15 knots. gusts up to 25 knots. a slight chance of showers late
this morning. waves 2 to 4 feet. 
.tonight...west winds 10 to 15 knots. a chance of sprinkles in
the evening. waves 2 to 4 feet. 
.sunday...west winds around 10 knots becoming northwest. sunny in
the morning, then becoming partly sunny. waves 1 to 2 feet. 
.sunday night...north winds 5 to 10 knots. mostly clear. waves
1 to 2 feet. 

the water temperature at st. joseph is 51 degrees and at michigan
city is 48 degrees.

$$

fzus53 kiwx 181434
nshiwx
expires:202604182015;;584072

nearshore marine forecast
national weather service northern indiana
1034 am edt sat apr 18 2026

for waters within five nautical miles of shore on lake michigan


lmz043-182015-
new buffalo mi to st joseph mi-
1034 am edt sat apr 18 2026

...small craft advisory in effect through late tonight...

.rest of today...northwest winds 10 to 20 knots becoming west. 
gusts up to 25 knots. a slight chance of showers late this 
morning. waves 3 to 5 feet. 
.tonight...west winds 10 to 15 knots. gusts up to 25 knots. a
chance of sprinkles in the evening. waves 2 to 4 feet. 
.sunday...west winds 10 to 15 knots becoming northwest. mostly
sunny. waves 1 to 3 feet. 
.sunday night...northwest winds 10 knots or less becoming
northeast. mostly clear. waves 1 to 2 feet. 

the water temperature at st. joseph is 51 degrees and at michigan
city is 48 degrees.

$$

fzus53 klot 181901 aaa
nshlot
expires:202604190330;;596038

nearshore marine forecast...updated
national weather service chicago/romeoville il
201 pm cdt sat apr 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>745-190330-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
201 pm cdt sat apr 18 2026

...small craft advisory in effect until 10 pm cdt this evening...

.late this afternoon...west winds 20 to 25 kt. partly cloudy. 
waves 3 to 5 ft. 
.tonight...west winds 20 to 25 kt diminishing to 15 to 20 kt.
partly cloudy in the evening, then becoming clear. waves 2 to
4 ft subsiding to 1 to 3 ft. 
.sunday...southwest winds 10 to 15 kt becoming north 15 to 25 kt.
slight chance of showers in the morning, then chance of showers 
in the afternoon. waves 1 to 3 ft building to 2 to 4 ft.
.sunday night...north winds 10 to 15 kt becoming northeast
overnight. partly cloudy in the evening then clearing. waves 1 to
3 ft. 
.monday...east winds around 10 kt. sunny. waves 1 to 2 ft.  

$$

fzus53 klot 181901 aaa
nshlot
expires:202604190330;;596037

nearshore marine forecast...updated
national weather service chicago/romeoville il
201 pm cdt sat apr 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>742-190330-
winthrop harbor to wilmette harbor il-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
201 pm cdt sat apr 18 2026

...small craft advisory in effect until 10 pm cdt this evening...

.late this afternoon...west winds to 30 kt. partly cloudy. waves 
2 to 4 ft. 
.tonight...west winds 20 to 25 kt becoming southwest and
diminishing to around 15 kt. mostly clear. waves 2 to 4 ft
subsiding to 1 to 2 ft. 
.sunday...southwest winds 10 to 15 kt becoming northwest 15 to
25 kt. slight chance of showers in the morning, then chance of 
showers in the afternoon. waves 1 to 2 ft. 
.sunday night...north winds 10 to 15 kt becoming northeast
overnight. partly cloudy in the evening then clearing. waves 1 to
3 ft. 
.monday...east winds 10 to 15 kt becoming southeast. mostly
sunny. waves 1 to 3 ft. 

$$

fzus53 kmkx 181810
nshmkx
expires:202604182200;;591796

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

for waters within five nautical miles of shore on lake michigan


lmz645-182200-
north point light to wind point wi-
110 pm cdt sat apr 18 2026

...small craft advisory in effect until 10 pm cdt this evening...

.rest of today...west wind 15 to 20 knots becoming 10 to 20 knots
late in the afternoon. gusts up to 25 knots. mostly cloudy. waves
1 to 2 feet. 
.tonight...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 late in the
afternoon. slight chance of snow showers in the morning. slight
chance of showers through the day. waves 1 to 2 feet. 
.sunday night...north wind 10 to 15 knots veering northeast late
in the evening, then becoming northeast 10 to 15 knots after
midnight easing to 5 to 10 knots early in the morning. slight
chance of showers through around midnight. waves 1 to 2 feet. 

$$

fzus53 kmkx 181810
nshmkx
expires:202604182200;;591797

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

for waters within five nautical miles of shore on lake michigan


lmz646-182200-
wind point wi to winthrop harbor il-
110 pm cdt sat apr 18 2026

...small craft advisory in effect until 10 pm cdt this evening...

.rest of today...west wind 10 to 20 knots with gusts to around
25 knots. partly sunny. waves 1 to 2 feet. 
.tonight...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 around 1 foot. 
.sunday...west wind 10 to 15 knots veering northwest with gusts
to around 20 knots late in the afternoon. slight chance of
showers through the day. waves around 1 foot. 
.sunday night...north wind 10 to 15 knots veering northeast after
midnight, then easing to 5 to 10 knots early in the morning.
slight chance of showers through around midnight. waves 1 to
2 feet. 

$$

fzus53 kmkx 181810
nshmkx
expires:202604182200;;591794

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

for waters within five nautical miles of shore on lake michigan


lmz643-182200-
sheboygan to port washington wi-
110 pm cdt sat apr 18 2026

...small craft advisory in effect until 10 pm cdt this evening...

.rest of today...west wind 10 to 20 knots rising to 15 to
25 knots late in the afternoon. mostly cloudy. waves 1 to 3 feet.
.tonight...west wind 15 to 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 northwest late in the
afternoon. chance of showers and slight chance of snow showers in
the morning. chance of sprinkles in the afternoon. waves 1 to
2 feet. 
.sunday night...north wind 10 to 15 knots veering northeast late
in the evening, then becoming northeast 10 to 15 knots after
midnight becoming north 5 to 10 knots early in the morning.
chance of sprinkles through around midnight. waves 1 to 2 feet. 

$$

fzus53 kmkx 181810
nshmkx
expires:202604182200;;591795

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

for waters within five nautical miles of shore on lake michigan


lmz644-182200-
port washington to north point light wi-
110 pm cdt sat apr 18 2026

...small craft advisory in effect until 10 pm cdt this evening...

.rest of today...west wind 10 to 20 knots rising to 15 to
25 knots late in the afternoon. mostly cloudy. waves 1 to 3 feet.
.tonight...west wind 15 to 25 knots becoming 15 to 20 knots late
in the evening, then easing to 10 to 15 knots after midnight.
partly cloudy through around midnight then clearing. waves 1 to
2 feet. 
.sunday...west wind 10 to 15 knots veering northwest late in the
afternoon. slight chance of snow showers in the morning. slight
chance of showers through the day. waves 1 to 2 feet. 
.sunday night...north wind 10 to 15 knots veering northeast late
in the evening, then becoming northeast 10 to 15 knots after
midnight easing to 5 to 10 knots early in the morning. partly
cloudy. waves 1 to 2 feet. 

$$