fzus63 kdtx 140212
glflh 
expires:202604141015;;327705

open lake forecast for lake huron
national weather service detroit/pontiac mi
1012 pm edt mon apr 13 2026

for waters beyond five nautical miles off shore on lake huron

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.

.synopsis...several disturbances ripple along a stalled warm front
this week, leading to multiple periods of showers and
thunderstorms especially overnight. a few of these storms may be
strong to severe.


lhz361-362-141015-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
1012 pm edt mon apr 13 2026

.rest of tonight...east winds 5 to 10 knots increasing to 10 to
15 knots early in the morning. patchy fog. showers and a chance
of thunderstorms after midnight. locally heavy rainfall possible
after midnight. waves 1 to 3 feet. 
.tuesday...east winds 10 to 15 knots becoming south 5 to 10 knots
late in the afternoon. a chance of showers in the morning. patchy
fog. waves 3 to 5 feet. 
.tuesday night...north winds 5 to 10 knots veering to the east in
the late evening and overnight. a chance of showers. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.wednesday...north winds 5 to 10 knots. waves 1 to 3 feet. 
.wednesday night...northeast winds 5 to 10 knots veering to the
east in the late evening and overnight. a chance of showers.
waves 1 to 3 feet. 
.thursday...east winds 10 to 15 knots veering to the southwest
late in the afternoon...then veering to the northwest late in the
evening. showers likely. a chance of showers late in the
afternoon. waves 2 to 4 feet. 
.friday...north winds 10 to 15 knots becoming northeast 5 to
10 knots in the late morning and early afternoon...then becoming
east 10 to 15 knots early in the evening becoming southeast 15 to
20 knots by midnight. a chance of. waves 2 to 4 feet building to
5 to 7 feet. waves occasionally around 10 feet. 
.saturday...southeast winds 20 to 25 knots with gusts to around
30 knots veering to the southwest with gusts to around 30 knots
by midnight. a chance of showers early in the morning...then
showers likely until early evening. a chance of rain and snow
showers by midnight. waves 6 to 9 feet. waves occasionally around
11 feet. 


$$

fzus63 kdtx 140212
glflh 
expires:202604141015;;327706

open lake forecast for lake huron
national weather service detroit/pontiac mi
1012 pm edt mon apr 13 2026

for waters beyond five nautical miles off shore on lake huron

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.

.synopsis...several disturbances ripple along a stalled warm front
this week, leading to multiple periods of showers and
thunderstorms especially overnight. a few of these storms may be
strong to severe.


lhz363-462>464-141015-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
1012 pm edt mon apr 13 2026

.rest of tonight...east winds 5 to 10 knots increasing to 10 to
15 knots early in the morning. patchy fog. showers and a chance
of thunderstorms after midnight. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then becoming southwest 10 to
15 knots in the afternoon. a chance of showers and thunderstorms
in the morning. patchy dense fog. waves 3 to 5 feet. 
.tuesday night...north winds 5 to 10 knots veering to the
southeast after midnight. showers and a chance of thunderstorms
in the evening...then showers likely and a chance of
thunderstorms after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight. 
.wednesday...north winds 5 to 10 knots. a chance of showers.
waves 1 to 3 feet. 
.wednesday night...north winds 5 to 10 knots veering to the east
in the late evening and overnight. a chance of showers and
thunderstorms in the evening...then showers likely after
midnight. waves 1 to 3 feet. 
.thursday...south winds 10 to 15 knots veering to the southwest
late in the afternoon...then veering to the southwest 10 to
15 knots late in the evening. showers likely...then a chance of
showers late in the evening. waves 2 to 4 feet. 
.friday...north winds 10 to 15 knots decreasing to 5 to 10 knots
until early evening...then becoming southeast 10 to 15 knots by
midnight. a chance of. waves 2 to 4 feet subsiding to 1 to 3 feet
early in the evening...then building to 4 to 6 feet by midnight.
waves occasionally around 8 feet. 
.saturday...south winds 20 to 25 knots decreasing to 15 to
20 knots early in the evening...then becoming southwest 20 to
25 knots by midnight. showers likely until afternoon. a chance of
showers . waves 5 to 7 feet. waves occasionally around 10 feet. 


$$

fzus63 kmkx 140254
glflm 
expires:202604140900;;328506

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
953 pm cdt mon apr 13 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

shower and thunderstorm activity is expected across lake michigan
late this evening into tonight as low pressure of 29.6 inches 
over southeast minnesota continues to head northeast. winds will 
be easterly north of a frontal boundary across roughly the 
northern half of the lake, with southerly winds expected in the 
south. then expecting another a couple passing low pressure system
to develop in the plains and track across lake michigan again on 
tuesday and wednesday. each system will bring a chance for showers
and thunderstorms through the middle of the week. areas of dense 
fog will likely occur at times due to a relatively mild and humid 
airmass over the cold waters paired with lighter winds.


lmz870-872-874-876-140900-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
953 pm cdt mon apr 13 2026

wilmette harbor il to st. joseph mi south to rock island passage
to charlevoix mi...

...dense fog advisory in effect until 7 am cdt tuesday...

.rest of tonight...south winds to 30 kt. patchy fog. chance of
rain showers and thunderstorms late this evening, then rain
showers and thunderstorms overnight. waves 2 to 4 ft building to
3 to 5 ft. 
.tuesday...southwest winds 10 to 20 kt increasing to 15 to 25 kt,
then becoming south 10 to 20 kt late. patchy dense fog in the
morning. chance of rain showers and thunderstorms in the morning,
then slight chance of rain showers and thunderstorms in the
afternoon. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday night...southeast winds 10 to 20 kt veering to west.
rain showers likely with a chance of thunderstorms in the
evening, then chance of rain showers and thunderstorms overnight.
waves 2 to 4 ft. 
.wednesday...southwest winds 10 to 15 kt backing to southeast.
chance of rain showers in the morning, then rain showers likely
in the afternoon. waves 2 to 4 ft. 
.wednesday night...southeast winds 10 to 15 kt becoming south
10 to 20 kt. rain showers with a chance of thunderstorms in the
evening, then rain showers likely with a chance of thunderstorms
overnight. waves 2 to 4 ft. 
.thursday...southwest winds 10 to 20 kt. rain showers likely.
waves 2 to 4 ft. 
.thursday night...northwest winds 10 to 15 kt becoming north.
waves 2 to 4 ft. 
.friday...east winds 10 to 15 kt becoming southeast 10 to 20 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...south winds to 30 kt becoming southwest. rain showers
likely. waves 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmkx 140254
glflm 
expires:202604140900;;328504

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
953 pm cdt mon apr 13 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

shower and thunderstorm activity is expected across lake michigan
late this evening into tonight as low pressure of 29.6 inches 
over southeast minnesota continues to head northeast. winds will 
be easterly north of a frontal boundary across roughly the 
northern half of the lake, with southerly winds expected in the 
south. then expecting another a couple passing low pressure system
to develop in the plains and track across lake michigan again on 
tuesday and wednesday. each system will bring a chance for showers
and thunderstorms through the middle of the week. areas of dense 
fog will likely occur at times due to a relatively mild and humid 
airmass over the cold waters paired with lighter winds.


lmz565-567-140900-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
953 pm cdt mon apr 13 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...dense fog advisory in effect until 7 am cdt tuesday...
...severe thunderstorm watch 106 in effect until 4 am cdt
tuesday...

.rest of tonight...east winds 15 to 25 kt becoming southeast.
patchy dense fog late this evening, then areas of dense fog
overnight. rain showers and thunderstorms late this evening, then
rain showers with a chance of thunderstorms overnight. waves 3 to
5 ft. 
.tuesday...north winds 10 to 20 kt veering to south 10 to 15 kt.
patchy dense fog in the morning. slight chance of rain showers in
the morning. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.tuesday night...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. chance of rain showers. waves 1 to 3 ft. 
.wednesday...northeast winds 5 to 10 kt. chance of rain showers
in the afternoon. waves 1 to 3 ft. 
.wednesday night...northeast winds 5 to 10 kt becoming east 10 to
15 kt. chance of rain showers in the evening, then rain showers
likely overnight. waves 1 to 3 ft. 
.thursday...east winds 10 to 15 kt backing to northwest. chance
of rain showers. waves 2 to 4 ft. 
.thursday night...north winds 10 to 15 kt becoming northeast.
waves 2 to 4 ft. 
.friday...east winds 10 to 15 kt becoming southeast 10 to 20 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...south winds to 30 kt becoming southwest. rain showers
likely. waves 8 to 11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 140254
glflm 
expires:202604140900;;328505

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
953 pm cdt mon apr 13 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

shower and thunderstorm activity is expected across lake michigan
late this evening into tonight as low pressure of 29.6 inches 
over southeast minnesota continues to head northeast. winds will 
be easterly north of a frontal boundary across roughly the 
northern half of the lake, with southerly winds expected in the 
south. then expecting another a couple passing low pressure system
to develop in the plains and track across lake michigan again on 
tuesday and wednesday. each system will bring a chance for showers
and thunderstorms through the middle of the week. areas of dense 
fog will likely occur at times due to a relatively mild and humid 
airmass over the cold waters paired with lighter winds.


lmz669-671-673-675-140900-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
953 pm cdt mon apr 13 2026

sheboygan wi to pentwater mi south to winthrop harbor il to south
haven mi...

...dense fog advisory in effect until 7 am cdt tuesday...
...severe thunderstorm watch 106 in effect until 4 am cdt
tuesday...

.rest of tonight...south winds to 30 kt. patchy fog. chance of
rain showers and thunderstorms late this evening, then rain
showers and thunderstorms overnight. waves 2 to 4 ft building to
3 to 5 ft. 
.tuesday...southwest winds 10 to 20 kt increasing to 15 to 25 kt,
then becoming south 10 to 20 kt late. patchy dense fog in the
morning. chance of rain showers and thunderstorms in the morning,
then slight chance of rain showers and thunderstorms in the
afternoon. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday night...southeast winds 10 to 20 kt veering to west.
rain showers likely with a chance of thunderstorms in the
evening, then chance of rain showers and thunderstorms overnight.
waves 2 to 4 ft. 
.wednesday...southwest winds 10 to 15 kt backing to southeast.
chance of rain showers in the morning, then rain showers likely
in the afternoon. waves 2 to 4 ft. 
.wednesday night...southeast winds 10 to 15 kt becoming south
10 to 20 kt. rain showers with a chance of thunderstorms in the
evening, then rain showers likely with a chance of thunderstorms
overnight. waves 2 to 4 ft. 
.thursday...southwest winds 10 to 20 kt. rain showers likely.
waves 2 to 4 ft. 
.thursday night...northwest winds 10 to 15 kt becoming north.
waves 2 to 4 ft. 
.friday...east winds 10 to 15 kt becoming southeast 10 to 20 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...south winds to 30 kt becoming southwest. rain showers
likely. waves 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmkx 140254
glflm 
expires:202604140900;;328503

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
953 pm cdt mon apr 13 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

shower and thunderstorm activity is expected across lake michigan
late this evening into tonight as low pressure of 29.6 inches 
over southeast minnesota continues to head northeast. winds will 
be easterly north of a frontal boundary across roughly the 
northern half of the lake, with southerly winds expected in the 
south. then expecting another a couple passing low pressure system
to develop in the plains and track across lake michigan again on 
tuesday and wednesday. each system will bring a chance for showers
and thunderstorms through the middle of the week. areas of dense 
fog will likely occur at times due to a relatively mild and humid 
airmass over the cold waters paired with lighter winds.


lmz261-362-364-366-563-868-140900-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
953 pm cdt mon apr 13 2026

sturgeon bay wi to point betsie mi north...

...dense fog advisory in effect until 7 am cdt tuesday...

.rest of tonight...east winds 15 to 25 kt becoming southeast.
patchy dense fog late this evening, then areas of dense fog
overnight. rain showers and thunderstorms late this evening, then
rain showers with a chance of thunderstorms overnight. waves 3 to
5 ft. 
.tuesday...north winds 10 to 20 kt veering to south 10 to 15 kt.
patchy dense fog in the morning. slight chance of rain showers in
the morning. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.tuesday night...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. chance of rain showers. waves 1 to 3 ft. 
.wednesday...northeast winds 5 to 10 kt. chance of rain showers
in the afternoon. waves 1 to 3 ft. 
.wednesday night...northeast winds 5 to 10 kt becoming east 10 to
15 kt. chance of rain showers in the evening, then rain showers
likely overnight. waves 1 to 3 ft. 
.thursday...east winds 10 to 15 kt backing to northwest. chance
of rain showers. waves 2 to 4 ft. 
.thursday night...north winds 10 to 15 kt becoming northeast.
waves 2 to 4 ft. 
.friday...east winds 10 to 15 kt becoming southeast 10 to 20 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...south winds to 30 kt becoming southwest. rain showers
likely. waves 8 to 11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 140206 aaa
glflm 
expires:202604140915;;327187

open lake forecast for lake michigan...updated
national weather service milwaukee/sullivan wi
906 pm cdt mon apr 13 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

shower and thunderstorm activity is expected across lake michigan
late this evening into tonight as low pressure of 29.6 inches 
over southeast minnesota continues to head northeast. winds will 
be easterly north of a frontal boundary across roughly the 
northern half of the lake, with southerly winds expected in the 
south. then expecting another a couple passing low pressure system
to develop in the plains and track across lake michigan again on 
tuesday and wednesday. each system will bring a chance for showers
and thunderstorms through the middle of the week. areas of dense 
fog will likely occur at times due to a relatively mild and humid 
airmass over the cold waters paired with lighter winds.


lmz261-362-364-366-563-565-567-868-140915-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
906 pm cdt mon apr 13 2026

sheboygan wi to pentwater mi north...

...dense fog advisory in effect until 7 am cdt tuesday...

.rest of tonight...east winds 15 to 25 kt becoming southeast.
patchy dense fog late this evening, then areas of dense fog
overnight. rain showers and thunderstorms late this evening, then
rain showers with a chance of thunderstorms overnight. waves 3 to
5 ft. 
.tuesday...north winds 10 to 20 kt veering to south 10 to 15 kt.
patchy dense fog in the morning. slight chance of rain showers in
the morning. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.tuesday night...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. chance of rain showers. waves 1 to 3 ft. 
.wednesday...northeast winds 5 to 10 kt. chance of rain showers
in the afternoon. waves 1 to 3 ft. 
.wednesday night...northeast winds 5 to 10 kt becoming east 10 to
15 kt. chance of rain showers in the evening, then rain showers
likely overnight. waves 1 to 3 ft. 
.thursday...east winds 10 to 15 kt backing to northwest. chance
of rain showers. waves 2 to 4 ft. 
.thursday night...north winds 10 to 15 kt becoming northeast.
waves 2 to 4 ft. 
.friday...east winds 10 to 15 kt becoming southeast 10 to 20 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...south winds to 30 kt becoming southwest. rain showers
likely. waves 8 to 11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 140206 aaa
glflm 
expires:202604140915;;327188

open lake forecast for lake michigan...updated
national weather service milwaukee/sullivan wi
906 pm cdt mon apr 13 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

shower and thunderstorm activity is expected across lake michigan
late this evening into tonight as low pressure of 29.6 inches 
over southeast minnesota continues to head northeast. winds will 
be easterly north of a frontal boundary across roughly the 
northern half of the lake, with southerly winds expected in the 
south. then expecting another a couple passing low pressure system
to develop in the plains and track across lake michigan again on 
tuesday and wednesday. each system will bring a chance for showers
and thunderstorms through the middle of the week. areas of dense 
fog will likely occur at times due to a relatively mild and humid 
airmass over the cold waters paired with lighter winds.


lmz669-671-673-675-870-872-874-876-140915-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
906 pm cdt mon apr 13 2026

sheboygan wi to pentwater mi south to winthrop harbor il to south
haven mi...

...dense fog advisory in effect until 7 am cdt tuesday...

.rest of tonight...south winds to 30 kt. patchy fog. chance of
rain showers and thunderstorms late this evening, then rain
showers and thunderstorms overnight. waves 2 to 4 ft building to
3 to 5 ft. 
.tuesday...southwest winds 10 to 20 kt increasing to 15 to 25 kt,
then becoming south 10 to 20 kt late. patchy dense fog in the
morning. chance of rain showers and thunderstorms in the morning,
then slight chance of rain showers and thunderstorms in the
afternoon. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday night...southeast winds 10 to 20 kt veering to west.
rain showers likely with a chance of thunderstorms in the
evening, then chance of rain showers and thunderstorms overnight.
waves 2 to 4 ft. 
.wednesday...southwest winds 10 to 15 kt backing to southeast.
chance of rain showers in the morning, then rain showers likely
in the afternoon. waves 2 to 4 ft. 
.wednesday night...southeast winds 10 to 15 kt becoming south
10 to 20 kt. rain showers with a chance of thunderstorms in the
evening, then rain showers likely with a chance of thunderstorms
overnight. waves 2 to 4 ft. 
.thursday...southwest winds 10 to 20 kt. rain showers likely.
waves 2 to 4 ft. 
.thursday night...northwest winds 10 to 15 kt becoming north.
waves 2 to 4 ft. 
.friday...east winds 10 to 15 kt becoming southeast 10 to 20 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...south winds to 30 kt becoming southwest. rain showers
likely. waves 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmkx 140151
glflm 
expires:202604140915;;326697

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
851 pm cdt mon apr 13 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

shower and thunderstorm activity is expected across lake michigan
late this evening into tonight as low pressure of 29.6 inches 
over southeast minnesota continues to head northeast. winds will 
be easterly north of a frontal boundary across roughly the 
northern half of the lake, with southerly winds expected in the 
south. then expecting another a couple passing low pressure system
to develop in the plains and track across lake michigan again on 
tuesday and wednesday. each system will bring a chance for showers
and thunderstorms through the middle of the week. areas of dense 
fog will likely occur at times due to a relatively mild and humid 
airmass over the cold waters paired with lighter winds.


lmz080-669-671-673-675-777-779-870-872-874-876-878-140915-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
851 pm cdt mon apr 13 2026

sheboygan wi to pentwater mi south...

.rest of tonight...south winds 10 to 20 kt becoming southwest to
30 kt. patchy fog. slight chance of rain showers and
thunderstorms through early evening, then chance of rain showers
and thunderstorms overnight. waves 1 to 3 ft building to 3 to
5 ft. 
.tuesday...southwest winds 10 to 20 kt increasing to 15 to 25 kt,
then becoming south 10 to 20 kt late. patchy dense fog in the
morning. chance of rain showers and thunderstorms in the morning,
then slight chance of rain showers and thunderstorms in the
afternoon. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday night...south winds 10 to 20 kt becoming southwest. rain
showers likely with a chance of thunderstorms in the evening,
then chance of rain showers and thunderstorms overnight. waves
2 to 4 ft. 
.wednesday...southwest winds 10 to 15 kt becoming south. chance
of rain showers in the morning, then rain showers likely in the
afternoon. waves 2 to 4 ft. 
.wednesday night...southeast winds 10 to 15 kt becoming south
10 to 20 kt. rain showers with a chance of thunderstorms in the
evening, then rain showers likely with a chance of thunderstorms
overnight. waves 2 to 4 ft. 
.thursday...southwest winds 10 to 20 kt. rain showers likely.
waves 2 to 4 ft. 
.thursday night...northwest winds 10 to 15 kt becoming north.
waves 2 to 4 ft. 
.friday...east winds 10 to 15 kt becoming southeast 10 to 20 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...south winds to 30 kt becoming southwest. rain showers
likely. waves 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 140201
glfls 
expires:202604140800;;326942

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon apr 13 2026

for waters beyond 5 nautical miles of shore on lake 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.

.synopsis...

a 29.5 inch low over the central plains lifts through northern lower 
michigan at 29.6 inches tuesday morning. following this, weak 
ridging of around 29.8 to 29.9 inches moves back over lake superior 
from northern ontario tuesday through wednesday before another low 
from the central plains lifts through the straits of mackinac at 
29.6 inches on thursday morning. ridging increases to 29.8 inches 
over lake superior later in the day thursday before troughing of 
29.4 to 29.6 inches moves across the lake friday through saturday.



lsz264-140800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt mon apr 13 2026

.rest of tonight...east winds 5 to 15 knots backing northeast
late. patchy fog. a chance of rain showers. waves calm to 2 feet.
.tuesday...northeast winds 5 to 15 knots. patchy fog. a chance of
rain showers. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming north
less than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...northeast winds less than 10 knots veering east by
mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots diminishing to less
than 10 knots after midnight. a slight chance of rain showers.
waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots backing north by mid
afternoon. waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots becoming east
10 to 20 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...east winds 15 to 25 knots becoming southeast gales to
35 knots. rain showers. waves building to 9 to 12 feet
occasionally to 15 feet. 
.saturday...west gales to 40 knots veering northwest. a chance of
rain showers. a chance of snow showers. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 9 to 12 feet
occasionally to 15 feet. 

$$

fzus63 kmqt 140201
glfls 
expires:202604140800;;326943

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon apr 13 2026

for waters beyond 5 nautical miles of shore on lake 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.

.synopsis...

a 29.5 inch low over the central plains lifts through northern lower 
michigan at 29.6 inches tuesday morning. following this, weak 
ridging of around 29.8 to 29.9 inches moves back over lake superior 
from northern ontario tuesday through wednesday before another low 
from the central plains lifts through the straits of mackinac at 
29.6 inches on thursday morning. ridging increases to 29.8 inches 
over lake superior later in the day thursday before troughing of 
29.4 to 29.6 inches moves across the lake friday through saturday.



lsz265-140800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt mon apr 13 2026

.rest of tonight...east winds 10 to 20 knots backing northeast
late. patchy fog. a slight chance of thunderstorms by midnight.
rain showers likely. waves calm to 2 feet. 
.tuesday...northeast winds 10 to 20 knots. patchy fog. waves calm
to 2 feet. 
.tuesday night...north winds 5 to 15 knots backing northwest
after midnight, then veering north late. a slight chance of rain
showers through midnight. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots backing north by mid
afternoon. a chance of rain showers. waves calm to 2 feet. 
.thursday night...east winds 10 to 20 knots. waves building to
2 to 4 feet. 
.friday...southeast winds 20 to 30 knots increasing to gales to
35 knots. rain showers. waves building to 7 to 10 feet
occasionally to 13 feet. 
.saturday...west gales to 35 knots becoming northwest gales to
40 knots. a chance of rain showers. a chance of snow showers.
waves subsiding to 6 to 9 feet occasionally to 11 feet, then
building to 10 to 14 feet occasionally to 18 feet. 

$$

fzus63 kmqt 140201
glfls 
expires:202604140800;;326945

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon apr 13 2026

for waters beyond 5 nautical miles of shore on lake 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.

.synopsis...

a 29.5 inch low over the central plains lifts through northern lower 
michigan at 29.6 inches tuesday morning. following this, weak 
ridging of around 29.8 to 29.9 inches moves back over lake superior 
from northern ontario tuesday through wednesday before another low 
from the central plains lifts through the straits of mackinac at 
29.6 inches on thursday morning. ridging increases to 29.8 inches 
over lake superior later in the day thursday before troughing of 
29.4 to 29.6 inches moves across the lake friday through saturday.



lsz267-140800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt mon apr 13 2026

.rest of tonight...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then backing northeast late. patchy fog.
a chance of rain showers. waves calm to 2 feet. 
.tuesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. patchy fog through early afternoon. a
slight chance of rain showers through early afternoon. waves calm
to 2 feet. 
.tuesday night...north winds 5 to 15 knots backing west after
midnight, then veering northwest late. a slight chance of rain
showers after midnight. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots backing north by mid
afternoon. a chance of rain showers. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.friday...east winds 15 to 25 knots becoming southeast gales to
35 knots. a chance of rain showers. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.saturday...west gales to 40 knots. rain showers likely. a chance
of snow showers. a chance of rain showers. waves building to
15 to 20 feet occasionally to 25 feet. 

$$

fzus63 kmqt 140201
glfls 
expires:202604140800;;326944

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon apr 13 2026

for waters beyond 5 nautical miles of shore on lake 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.

.synopsis...

a 29.5 inch low over the central plains lifts through northern lower 
michigan at 29.6 inches tuesday morning. following this, weak 
ridging of around 29.8 to 29.9 inches moves back over lake superior 
from northern ontario tuesday through wednesday before another low 
from the central plains lifts through the straits of mackinac at 
29.6 inches on thursday morning. ridging increases to 29.8 inches 
over lake superior later in the day thursday before troughing of 
29.4 to 29.6 inches moves across the lake friday through saturday.



lsz266-140800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1000 pm edt mon apr 13 2026

.rest of tonight...east winds 10 to 20 knots backing northeast
late. patchy fog. a slight chance of thunderstorms by midnight. a
chance of rain showers. waves calm to 2 feet building to 1 to
3 feet. 
.tuesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then increasing to 10 to 20 knots
late. patchy fog. a slight chance of rain showers. waves
subsiding to calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight, then veering north late. a slight
chance of rain showers. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots veering northeast by mid
afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots backing north by mid
afternoon. a chance of rain showers. waves calm to 2 feet. 
.thursday night...north winds 10 to 20 knots becoming east 15 to
25 knots after midnight. waves building to 2 to 4 feet. 
.friday...southeast winds 20 to 30 knots becoming south gales to
40 knots. rain showers. waves building to 9 to 12 feet
occasionally to 15 feet. 
.saturday...west gales to 40 knots becoming northwest gales to
45 knots. a chance of rain and snow showers. waves building to
10 to 14 feet occasionally to 18 feet, then subsiding to 9 to
12 feet occasionally to 15 feet. 

$$

fzus63 kmqt 140201
glfls 
expires:202604140800;;326941

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon apr 13 2026

for waters beyond 5 nautical miles of shore on lake 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.

.synopsis...

a 29.5 inch low over the central plains lifts through northern lower 
michigan at 29.6 inches tuesday morning. following this, weak 
ridging of around 29.8 to 29.9 inches moves back over lake superior 
from northern ontario tuesday through wednesday before another low 
from the central plains lifts through the straits of mackinac at 
29.6 inches on thursday morning. ridging increases to 29.8 inches 
over lake superior later in the day thursday before troughing of 
29.4 to 29.6 inches moves across the lake friday through saturday.



lsz263-140800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1000 pm edt mon apr 13 2026

.rest of tonight...east winds 10 to 20 knots backing northeast
late. patchy fog. a chance of rain showers. waves calm to 2 feet
building to 2 to 4 feet. 
.tuesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. patchy fog. a chance of rain showers.
waves subsiding to 1 to 3 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming north
less than 10 knots after midnight, then veering northeast late.
waves subsiding to calm to 2 feet. 
.wednesday...northeast winds less than 10 knots increasing to
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots backing northeast
after midnight. a slight chance of rain showers. waves calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...east winds 15 to 25 knots becoming southeast gales to
35 knots. a chance of rain showers, then rain showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.saturday...west gales to 35 knots becoming northwest gales to
40 knots. a chance of rain showers. a chance of snow showers.
waves building to 10 to 14 feet occasionally to 18 feet. 

$$

fzus63 kmqt 140201
glfls 
expires:202604140800;;326940

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon apr 13 2026

for waters beyond 5 nautical miles of shore on lake 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.

.synopsis...

a 29.5 inch low over the central plains lifts through northern lower 
michigan at 29.6 inches tuesday morning. following this, weak 
ridging of around 29.8 to 29.9 inches moves back over lake superior 
from northern ontario tuesday through wednesday before another low 
from the central plains lifts through the straits of mackinac at 
29.6 inches on thursday morning. ridging increases to 29.8 inches 
over lake superior later in the day thursday before troughing of 
29.4 to 29.6 inches moves across the lake friday through saturday.



lsz162-140800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt mon apr 13 2026 /900 pm cdt mon apr 13 2026/

.rest of tonight...northeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight, then diminishing to 10 to 20 knots
late. patchy fog. a chance of rain showers. waves calm to 2 feet
building to 2 to 4 feet. 
.tuesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots late. patchy fog. a chance of rain showers. waves
subsiding to calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots backing north
after midnight, then veering northeast late. waves calm to
2 feet. 
.wednesday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots. a slight chance
of rain showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...east winds 10 to 20 knots becoming west 20 to 30 knots.
rain showers. waves building to 5 to 8 feet occasionally to
10 feet. 
.saturday...west winds 20 to 30 knots becoming northwest gales to
35 knots. a chance of rain showers. a chance of snow showers.
waves subsiding to 4 to 7 feet occasionally to 9 feet, then
building to 6 to 9 feet occasionally to 11 feet. 

$$