fzus53 kapx 181704
nshapx
expires:202605190115;;775274

nearshore marine forecast
national weather service gaylord mi
104 pm edt mon may 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.


lmz346-190115-
manistee to point betsie mi-
104 pm edt mon may 18 2026

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

.rest of the afternoon...southwest wind 10 to 15 knots. scattered
showers and isolated thunderstorms. waves 2 to 4 feet. 
.tonight...south wind 10 to 20 knots. scattered showers and
thunderstorms. waves 3 to 5 feet. 
.tuesday...southwest wind 10 to 20 knots. scattered showers.
waves 4 to 6 feet. 
.tuesday night...north wind 10 to 15 knots. mostly cloudy. waves
2 to 4 feet. 

winds and waves higher in the vicinity of thunderstorms.

see the open lakes forecast for days 3 through 5.

$$

fzus53 kgrb 182056
nshgrb
expires:202605190400;;787455

nearshore marine forecast
national weather service green bay wi
356 pm cdt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz542-543-190400-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
356 pm cdt mon may 18 2026

...small craft advisory in effect from 1 am cdt tuesday through
late tuesday night...

.late this afternoon...se wind 5 to 10 kts. waves 2 to 4 ft.
patchy fog. a slight chance of showers and thunderstorms. 
.tonight...s wind 10 to 15 kts. waves 2 to 4 ft building to 4 to
7 ft after midnight. patchy fog. a chance of showers and
thunderstorms. 
.tuesday...sw wind 15 to 25 kts veering w early in the afternoon.
waves 4 to 7 ft. patchy fog in the morning. a chance of showers
in the morning. 
.tuesday night...nw wind 10 to 15 kts. waves 2 to 4 ft. mostly
cloudy in the evening then becoming partly cloudy. 
.wednesday...n wind 10 to 15 kts veering ne in the late morning
and afternoon. waves 2 ft or less. mostly sunny.  

$$

fzus53 kgrr 182044
nshgrr
expires:202605190800;;787020

nearshore marine forecast
national weather service grand rapids mi
444 pm edt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz844-190800-
st joseph to south haven mi-
444 pm edt mon may 18 2026

...small craft advisory in effect from 2 am edt tuesday through
tuesday evening...

.through early evening...southwest winds around 20 knots. rain
showers likely and a chance of thunderstorms. waves 2 to 3 feet. 
.tonight...south winds 15 to 25 knots. mostly cloudy with a chance
of showers and thunderstorms. waves 2 to 4 feet.
.tuesday...southwest winds 20 to 25 knots. partly sunny with a
chance of showers and thunderstorms. waves 3 to 5 feet. 
.tuesday night...northwest winds around 15 knots veering north after
midnight. mostly cloudy with rain showers likely and a chance of
thunderstorms. waves 2 to 4 feet.
.wednesday...north winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.wednesday night...north winds 15 to 25 knots veering northeast
10 to 15 knots in the late evening and overnight. partly cloudy.
waves 3 to 5 feet. 
.thursday...northeast winds 10 to 15 knots. mostly sunny. waves 1 to
3 feet. 
.friday...east winds 15 to 20 knots. mostly cloudy with a chance of
rain showers. waves around 1 foot. 
.saturday...east winds 10 to 15 knots backing northwest early in the
afternoon. mostly cloudy. waves 1 foot or less. 

$$

fzus53 kgrr 182044
nshgrr
expires:202605190800;;787015

nearshore marine forecast
national weather service grand rapids mi
444 pm edt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz849-190800-
pentwater to manistee mi-
444 pm edt mon may 18 2026

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

.through early evening...south winds 20 to 25 knots. mostly cloudy
with a chance of showers and thunderstorms. waves 3 to 5 feet. 
.tonight...south winds to 30 knots. partly cloudy in the evening,
then rain showers likely and a chance of thunderstorms after
midnight. patchy fog after midnight. waves 4 to 6 feet. 
.tuesday...south winds to 30 knots. rain showers likely and a chance
of thunderstorms. patchy fog. waves 5 to 7 feet. 
.tuesday night...west winds 10 to 20 knots veering north in the late
evening and overnight. partly cloudy. waves 3 to 5 feet. 
.wednesday...north winds 15 to 25 knots. sunny. waves 2 to 3 feet. 
.wednesday night...northeast winds 10 to 20 knots decreasing to 5 to
10 knots after midnight. partly cloudy. waves 2 to 3 feet. 
.thursday...northeast winds 5 to 10 knots backing north 10 to
15 knots early in the afternoon. mostly sunny. waves around 1 foot. 
.friday...east winds 10 to 20 knots. mostly cloudy. waves 1 foot or
less. 
.saturday...northeast winds 10 to 15 knots. mostly cloudy with a
chance of rain showers. waves 1 foot or less. 

$$

fzus53 kgrr 182044
nshgrr
expires:202605190800;;787016

nearshore marine forecast
national weather service grand rapids mi
444 pm edt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz848-190800-
whitehall to pentwater mi-
444 pm edt mon may 18 2026

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

.through early evening...south winds 20 to 25 knots. mostly cloudy
with a chance of thunderstorms and a slight chance of rain showers.
waves 4 to 6 feet. 
.tonight...south winds to 30 knots. mostly cloudy with a chance of
showers and thunderstorms. patchy fog after midnight. waves 4 to
6 feet. 
.tuesday...south winds to 30 knots. rain showers likely and a chance
of thunderstorms. patchy fog. waves 5 to 7 feet. 
.tuesday night...west winds 20 to 25 knots veering north 15 to
20 knots in the late evening and overnight. partly cloudy. waves
3 to 5 feet. 
.wednesday...north winds 15 to 25 knots. sunny. waves 2 to 4 feet.
.wednesday night...north winds 15 to 25 knots veering northeast
10 to 15 knots in the late evening and overnight. partly cloudy.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.thursday...northeast winds 10 to 15 knots backing north early in
the afternoon. mostly sunny. waves around 1 foot. 
.friday...east winds 15 to 20 knots. mostly cloudy. waves around
1 foot. 
.saturday...northeast winds 15 to 20 knots. mostly cloudy. waves
around 1 foot. 

$$

fzus53 kgrr 182044
nshgrr
expires:202605190800;;787017

nearshore marine forecast
national weather service grand rapids mi
444 pm edt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz847-190800-
grand haven to whitehall mi-
444 pm edt mon may 18 2026

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

.through early evening...south winds 20 to 25 knots. rain showers
likely and a chance of thunderstorms. waves 3 to 5 feet. 
.tonight...south winds to 30 knots. mostly cloudy with a chance of
showers and thunderstorms. patchy fog after midnight. waves 4 to
6 feet. 
.tuesday...southwest winds to 30 knots. rain showers likely and a
chance of thunderstorms. patchy fog. waves 5 to 7 feet. 
.tuesday night...northwest winds 15 to 25 knots veering north after
midnight. mostly cloudy. waves 3 to 5 feet. 
.wednesday...north winds 15 to 25 knots. sunny. waves 2 to 4 feet. 
.wednesday night...north winds 15 to 25 knots veering northeast
10 to 15 knots after midnight. partly cloudy. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight. 
.thursday...east winds 10 to 15 knots backing north early in the
afternoon. mostly sunny. waves 1 foot or less. 
.friday...east winds 15 to 20 knots. mostly cloudy. waves around
1 foot. 
.saturday...east winds 15 to 20 knots backing northeast 10 to
15 knots early in the afternoon. mostly cloudy with a chance of rain
showers. waves around 1 foot. 

$$

fzus53 kgrr 182044
nshgrr
expires:202605190800;;787018

nearshore marine forecast
national weather service grand rapids mi
444 pm edt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz846-190800-
holland to grand haven mi-
444 pm edt mon may 18 2026

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

.through early evening...south winds 20 to 25 knots. mostly cloudy
with a chance of showers and thunderstorms. waves 3 to 5 feet. 
.tonight...south winds to 30 knots. mostly cloudy with a chance of
showers and thunderstorms. patchy fog after midnight. waves 3 to
5 feet. 
.tuesday...southwest winds to 30 knots. rain showers likely and a
chance of thunderstorms. patchy fog. waves 5 to 7 feet. 
.tuesday night...northwest winds 15 to 20 knots veering north after
midnight. mostly cloudy. waves 2 to 4 feet. 
.wednesday...north winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.wednesday night...north winds 15 to 25 knots veering northeast
around 15 knots after midnight. partly cloudy. waves 3 to 5 feet
subsiding to 1 to 2 feet after midnight. 
.thursday...northeast winds 10 to 15 knots. mostly sunny. waves
around 1 foot. 
.friday...east winds 15 to 20 knots. mostly cloudy. waves 1 to
2 feet. 
.saturday...east winds 15 to 20 knots backing north 10 to 15 knots
early in the afternoon. mostly cloudy with a chance of rain showers.
waves around 1 foot. 

$$

fzus53 kgrr 182044
nshgrr
expires:202605190800;;787019

nearshore marine forecast
national weather service grand rapids mi
444 pm edt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz845-190800-
south haven to holland mi-
444 pm edt mon may 18 2026

...small craft advisory in effect from 2 am edt tuesday through
tuesday evening...

.through early evening...south winds around 20 knots. rain showers
likely and a chance of thunderstorms. waves 2 to 4 feet. 
.tonight...south winds 15 to 25 knots. mostly cloudy with a chance
of showers and thunderstorms. waves 2 to 4 feet. 
.tuesday...southwest winds to 30 knots. partly sunny with a chance
of showers and thunderstorms. waves 4 to 6 feet. 
.tuesday night...northwest winds 15 to 20 knots veering north after
midnight. mostly cloudy. waves 2 to 4 feet. 
.wednesday...north winds 15 to 25 knots. mostly sunny. waves 3 to
5 feet. 
.wednesday night...north winds 15 to 25 knots veering northeast
around 15 knots after midnight. partly cloudy. waves 3 to 5 feet
subsiding to 1 to 3 feet after midnight. 
.thursday...northeast winds 10 to 15 knots. mostly sunny. waves
around 1 foot. 
.friday...east winds 15 to 20 knots. mostly cloudy. waves around
1 foot. 
.saturday...northeast winds 10 to 15 knots backing northwest early
in the afternoon. mostly cloudy with a chance of rain showers. waves
around 1 foot. 

$$

fzus53 kiwx 181947
nshiwx
expires:202605190215;;784394

nearshore marine forecast
national weather service northern indiana
347 pm edt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz043-190215-
new buffalo mi to st joseph mi-
347 pm edt mon may 18 2026

.tonight...south winds 10 to 15 knots increasing to 15 to
20 knots. a few gusts up to 25 knots. a slight chance of showers 
and thunderstorms this evening. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. a few 
gusts up to 25 knots. a chance of showers with a slight chance of
thunderstorms in the morning, then showers likely with a chance 
of thunderstorms in the afternoon. waves 2 to 4 feet. 
.tuesday night...west winds 10 to 15 knots becoming north.
showers likely with a chance of thunderstorms in the evening,
then a chance of showers overnight. waves 2 to 3 feet. 
.wednesday...north winds 10 to 15 knots. mostly sunny. waves 2 to
4 feet. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 55 degrees and at michigan
city is 53 degrees.

$$

fzus53 kiwx 181947
nshiwx
expires:202605190215;;784393

nearshore marine forecast
national weather service northern indiana
347 pm edt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz046-190215-
michigan city in to new buffalo mi-
347 pm edt mon may 18 2026

.tonight...south winds 10 to 15 knots increasing to 15 to
20 knots. a few gusts up to 25 knots. a slight chance of showers 
and thunderstorms this evening. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. a few 
gusts up to 25 knots. a chance of showers with a slight chance of
thunderstorms in the morning, then showers likely with a chance 
of thunderstorms in the afternoon. waves 1 to 3 feet. 
.tuesday night...west winds 10 to 15 knots becoming north.
showers likely with a chance of thunderstorms in the evening,
then a chance of showers overnight. waves 2 to 3 feet. 
.wednesday...north winds 10 to 15 knots. mostly sunny. waves 2 to
4 feet. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 55 degrees and at michigan
city is 53 degrees.

$$

fzus53 klot 182046
nshlot
expires:202605190345;;787079

nearshore marine forecast
national weather service chicago/romeoville il
346 pm cdt mon may 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>742-190345-
winthrop harbor to wilmette harbor il-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
346 pm cdt mon may 18 2026

.tonight...southwest winds 15 to 25 kt becoming south. chance of 
showers and slight chance of thunderstorms after midnight. waves 2
to 4 ft.
.tuesday...southwest winds 15 to 25 kt becoming west in the
afternoon. chance of showers and slight chance of thunderstorms
in the morning, then chance of showers and thunderstorms in the
afternoon. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday night...northwest winds 15 to 20 kt becoming north.
slight chance of showers and thunderstorms in the evening. waves
1 to 3 ft building to 2 to 4 ft. 
.wednesday...north winds 15 to 20 kt becoming northeast. partly
cloudy. waves 2 to 4 ft building to 3 to 5 ft.  

$$

fzus53 klot 182046
nshlot
expires:202605190345;;787080

nearshore marine forecast
national weather service chicago/romeoville il
346 pm cdt mon may 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>745-190345-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
346 pm cdt mon may 18 2026

.tonight...south winds 15 to 25 kt. chance of showers and slight 
chance of thunderstorms after midnight. waves 2 to 4 ft. 
.tuesday...southwest winds 15 to 25 kt. slight chance of showers 
and thunderstorms in the morning, then chance of showers and 
thunderstorms in the afternoon. waves 2 to 4 ft. 
.tuesday night...northwest winds 15 to 20 kt becoming north.
showers likely and a chance of thunderstorms in the evening.
waves 2 to 4 ft. 
.wednesday...north winds 15 to 20 kt. mostly cloudy in the
morning, then becoming partly cloudy. waves 3 to 5 ft.  

$$

fzus53 kmkx 182010
nshmkx
expires:202605190900;;786098

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 pm cdt mon may 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 mon may 18 2026

...small craft advisory in effect from late tonight through
tuesday afternoon...

.through early evening...south wind 5 to 10 knots rising to 10 to
15 knots late in the afternoon. mostly cloudy. waves 2 to 4 feet
subsiding to 1 to 3 feet late in the afternoon. 
.tonight...south wind 10 to 15 knots rising to 15 to 20 knots
after midnight, then becoming south 15 to 20 knots early in the
morning. slight chance of showers and thunderstorms in the
evening, then chance of showers and thunderstorms in the late
evening and overnight. waves 1 to 3 feet building to 2 to 4 feet
in the late evening and overnight. 
.tuesday...south wind 15 to 20 knots veering southwest late in
the morning, then becoming southwest 15 to 20 knots early in the
afternoon becoming west 10 to 15 knots late in the afternoon.
gusts up to 25 knots. slight chance of showers in the morning.
slight chance of thunderstorms through the day. chance of showers
in the afternoon. waves 2 to 4 feet subsiding to 1 to 2 feet late
in the afternoon. 
.tuesday night...northwest wind 10 to 15 knots with gusts to
around 20 knots veering north early in the morning. partly
cloudy. waves 1 to 2 feet. 
.wednesday...north wind 10 to 15 knots veering northeast late in
the afternoon. mostly sunny. waves 2 to 4 feet. 

$$

fzus53 kmkx 182010
nshmkx
expires:202605190900;;786097

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 pm cdt mon may 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 mon may 18 2026

...small craft advisory in effect from late tonight through
tuesday afternoon...

.through early evening...south wind 10 to 15 knots. partly sunny.
waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon.
.tonight...south wind 10 to 15 knots rising to 15 to 20 knots.
slight chance of showers and thunderstorms in the evening, then
chance of showers and thunderstorms in the late evening and
overnight. waves 1 to 2 feet building to 2 to 4 feet in the late
evening and overnight. 
.tuesday...southwest wind 15 to 20 knots veering west late in the
afternoon. gusts up to 25 knots. slight chance of showers in the
morning. slight chance of thunderstorms through the day. chance
of showers in the afternoon. waves 2 to 4 feet subsiding to 1 to
2 feet late in the afternoon. 
.tuesday night...northwest wind 10 to 15 knots with gusts to
around 20 knots veering north early in the morning. partly
cloudy. waves 1 to 2 feet. 
.wednesday...north wind 10 to 15 knots veering northeast late in
the afternoon. mostly sunny. waves 2 to 4 feet. 

$$

fzus53 kmkx 182010
nshmkx
expires:202605190900;;786096

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 pm cdt mon may 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 mon may 18 2026

...small craft advisory in effect from late tonight through
tuesday afternoon...

.through early evening...south wind 5 to 10 knots rising to 10 to
15 knots late in the afternoon. partly sunny. waves 2 to 4 feet. 
.tonight...south wind 10 to 15 knots rising to 15 to 20 knots
late in the evening, then becoming south 15 to 20 knots after
midnight. chance of showers and thunderstorms in the late evening
and overnight. waves 1 to 3 feet building to 3 to 4 feet in the
late evening and overnight. 
.tuesday...south wind 15 to 20 knots veering west late in the
afternoon. gusts up to 25 knots. slight chance of thunderstorms
in the morning. chance of showers through the day. waves 3 to
4 feet subsiding to 1 to 2 feet late in the afternoon. 
.tuesday night...northwest wind 15 to 20 knots easing to 10 to
15 knots late in the evening, then becoming northwest 10 to
15 knots with gusts to around 20 knots after midnight veering
north early in the morning. partly cloudy. waves 1 to 2 feet. 
.wednesday...north wind 10 to 15 knots veering northeast late in
the afternoon. mostly sunny. waves 1 to 2 feet building to 2 to
4 feet in the afternoon. 

$$

fzus53 kmkx 182010
nshmkx
expires:202605190900;;786095

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 pm cdt mon may 18 2026

for waters within five nautical miles of shore on lake michigan


lmz643-190900-
sheboygan to port washington wi-
310 pm cdt mon may 18 2026

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

.through early evening...south wind 10 to 15 knots. partly sunny.
waves 3 to 4 feet. 
.tonight...south wind 10 to 15 knots rising to 15 to 20 knots
late in the evening, then becoming south 15 to 20 knots after
midnight. chance of showers and thunderstorms in the late evening
and overnight. patchy fog after midnight. waves 3 to 4 feet
building to 4 to 6 feet early in the morning. 
.tuesday...south wind 15 to 20 knots veering west late in the
afternoon. gusts up to 25 knots. patchy fog in the morning.
slight chance of thunderstorms in the morning. chance of showers
through the day. waves 4 to 6 feet subsiding to 3 to 4 feet in
the late morning and afternoon. 
.tuesday night...northwest wind 15 to 20 knots easing to 10 to
15 knots with gusts to around 20 knots late in the evening, then
becoming northwest 10 to 15 knots with gusts to around 20 knots
after midnight veering north early in the morning. partly cloudy.
waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening
and overnight. 
.wednesday...north wind 10 to 15 knots veering northeast late in
the afternoon. mostly sunny. waves 1 to 2 feet. 

$$