fzus63 kdtx 300147
glflh 
expires:202604301000;;757053

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 pm edt wed apr 29 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...a diffuse low pressure system, 30.00, will very
gradually move across the great lakes through the mid to late
week period. this will bring periods of isolated rain showers and
will generally maintain lighter northwest flow.


lhz361-301000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
947 pm edt wed apr 29 2026

.rest of tonight...northwest winds 15 to 20 knots decreasing to
10 to 15 knots early in the morning. waves 2 to 4 feet. 
.thursday...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. 
.thursday night...west winds 10 to 15 knots becoming northwest
15 to 20 knots by midnight...then decreasing to 10 to 15 knots
after midnight. waves 2 to 4 feet. 
.friday...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. 
.friday night...northwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. waves 3 to 5 feet. 
.saturday...west winds 10 to 15 knots. waves 2 to 4 feet. 
.sunday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the evening...then becoming southwest 5 to
10 knots by midnight. a chance of showers by midnight. waves 1 to
3 feet building to 2 to 4 feet until early evening...then
subsiding to 1 to 3 feet by midnight. 
.monday...west winds 10 to 15 knots. a chance of showers. waves
1 to 3 feet. 


$$

fzus63 kdtx 300147
glflh 
expires:202604301000;;757054

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 pm edt wed apr 29 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...a diffuse low pressure system, 30.00, will very
gradually move across the great lakes through the mid to late
week period. this will bring periods of isolated rain showers and
will generally maintain lighter northwest flow.


lhz362-363-301000-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
947 pm edt wed apr 29 2026

.rest of tonight...northwest winds 10 to 15 knots. waves 3 to
5 feet. 
.thursday...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet late in the afternoon. 
.thursday night...north winds 5 to 10 knots becoming northwest
10 to 15 knots in the late evening and overnight. waves 2 to
4 feet. 
.friday...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet early in the afternoon. 
.friday night...northwest winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.saturday...northwest winds 10 to 15 knots becoming northeast
5 to 10 knots late in the afternoon...then backing to the west
late in the evening. waves 3 to 5 feet. 
.sunday...southwest winds 5 to 10 knots becoming south 10 to
15 knots . a chance of showers by midnight. waves 2 to 4 feet. 
.monday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then becoming west 10 to 15 knots
by midnight. a chance of showers. waves 1 to 3 feet. 


$$

fzus63 kdtx 300147
glflh 
expires:202604301000;;757055

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 pm edt wed apr 29 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...a diffuse low pressure system, 30.00, will very
gradually move across the great lakes through the mid to late
week period. this will bring periods of isolated rain showers and
will generally maintain lighter northwest flow.


lhz462>464-301000-
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-
947 pm edt wed apr 29 2026

.rest of tonight...northwest winds 10 to 15 knots. waves 2 to
4 feet. 
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the afternoon. waves 2 to 4 feet subsiding to 1 to
3 feet late in the afternoon. 
.thursday night...light and variable winds becoming northwest
5 to 10 knots after midnight. waves 1 to 3 feet. 
.friday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.friday night...north winds 5 to 10 knots backing to the
northwest after midnight. waves 1 to 3 feet building to 2 to
4 feet after midnight. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then veering to the northwest 5 to
10 knots late in the afternoon backing to the southwest late in
the evening. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming southwest 10 to
15 knots . a chance of. waves 1 to 3 feet. 
.monday...southwest winds 10 to 15 knots becoming west 5 to
10 knots early in the evening...then increasing to 10 to 15 knots
by midnight. a chance of showers. waves 1 to 3 feet. 


$$

fzus63 kmkx 300129
glflm 
expires:202604300915;;756486

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
829 pm cdt wed apr 29 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...

widespread gales are not expected through the duration of the period 
across the open waters of lake michigan. currently north-northwest 
winds will continue through the end of the week as 29.6 inch low 
pressure shifts into the canadian maritime provinces & 30.2 inch high
pressure builds into the northern great plains. winds will trend 
south-southwesterly saturday into sunday as the aforementioned 
area of high pressure moves into the ohio river valley and 29.5
inch low pressure forms over the hudson bay. winds will briefly 
veer westerly sunday night into monday as a weak cold front 
crosses lake michigan. showers and a few thunderstorms will 
accompany the front, with severe weather not anticipated at this 
time.

a second area of stronger low pressure near 29.3 inches will 
develop over the lake superior vicinity during the day monday, 
ultimately shifting toward the southern hudson bay and quebec on 
tuesday. progression of the low will allow winds to trend west- 
southwesterly monday night through wednesday. a cold front is 
forecast to cross the open waters wednesday afternoon, bringing a 
northwest wind shift. additional periods of showers and embedded 
storms are forecast sunday night into the middle of next week, 
with widespread severe thunderstorms not expected at this time.


lmz080-669-671-673-675-777-779-870-872-874-876-878-300915-
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-
829 pm cdt wed apr 29 2026

sheboygan wi to pentwater mi south...

.rest of tonight...north winds 10 to 15 kt becoming northwest
5 to 10 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...north winds 5 to 10 kt becoming northeast 10 to
15 kt. chance of rain showers in the afternoon. waves 1 to 2 ft. 
.thursday night...northeast winds 5 to 10 kt becoming north.
chance of rain showers in the evening. waves 1 to 2 ft. 
.friday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...west winds 10 to 15 kt becoming northwest. waves
1 to 3 ft. 
.saturday...northwest winds 10 to 15 kt becoming west 10 to
20 kt. waves 1 to 2 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest.
waves 1 to 2 ft building to 2 to 4 ft. 
.sunday...southwest winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...west winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 300129
glflm 
expires:202604300915;;756485

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
829 pm cdt wed apr 29 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...

widespread gales are not expected through the duration of the period 
across the open waters of lake michigan. currently north-northwest 
winds will continue through the end of the week as 29.6 inch low 
pressure shifts into the canadian maritime provinces & 30.2 inch high
pressure builds into the northern great plains. winds will trend 
south-southwesterly saturday into sunday as the aforementioned 
area of high pressure moves into the ohio river valley and 29.5
inch low pressure forms over the hudson bay. winds will briefly 
veer westerly sunday night into monday as a weak cold front 
crosses lake michigan. showers and a few thunderstorms will 
accompany the front, with severe weather not anticipated at this 
time.

a second area of stronger low pressure near 29.3 inches will 
develop over the lake superior vicinity during the day monday, 
ultimately shifting toward the southern hudson bay and quebec on 
tuesday. progression of the low will allow winds to trend west- 
southwesterly monday night through wednesday. a cold front is 
forecast to cross the open waters wednesday afternoon, bringing a 
northwest wind shift. additional periods of showers and embedded 
storms are forecast sunday night into the middle of next week, 
with widespread severe thunderstorms not expected at this time.


lmz261-362-364-366-563-565-567-868-300915-
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-
829 pm cdt wed apr 29 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northwest winds 10 to 15 kt becoming north.
chance of rain showers through early evening, then slight chance
of rain showers overnight. waves 1 to 2 ft. 
.thursday...northwest winds 10 to 15 kt becoming west 10 to
20 kt. waves 1 to 2 ft. 
.thursday night...northwest winds 10 to 20 kt. waves 1 to 3 ft. 
.friday...northwest winds 10 to 20 kt. waves 1 to 3 ft. 
.friday night...northwest winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...northwest winds 10 to 20 kt becoming southwest. waves
1 to 3 ft. 
.saturday night...southwest winds 10 to 20 kt diminishing to
10 to 15 kt. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.monday...west winds 10 to 15 kt increasing to 10 to 20 kt. waves
1 to 3 ft.  

$$

fzus63 kmqt 300201
glfls 
expires:202604300800;;757367

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed apr 29 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...

weak ridging persists between 30.0 and 30.1 inches through early 
saturday as a 30.3 inch high slowly shifts east from the canadian 
prairies to northwest ontario and hudson bay. weak troughing of 29.8 
inches moves over the lake saturday night and strengthens to 29.5 
inches through monday as the parent low pressure deepens to 29.4 
inches over northern ontario and james bay.



lsz266-300800-
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-
1001 pm edt wed apr 29 2026

.rest of tonight...northwest winds 10 to 20 knots veering north
late. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots backing northwest late.
waves building to 1 to 3 feet. 
.thursday night...northwest winds 15 to 25 knots veering north
after midnight, then diminishing to 10 to 20 knots late. waves
1 to 3 feet. 
.friday...north winds 15 to 25 knots backing northwest by mid
afternoon. waves building to 2 to 4 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.saturday night...west winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...west winds 10 to 20 knots becoming northwest 5 to
15 knots. waves calm to 2 feet. 
.monday...northwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 300201
glfls 
expires:202604300800;;757368

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed apr 29 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...

weak ridging persists between 30.0 and 30.1 inches through early 
saturday as a 30.3 inch high slowly shifts east from the canadian 
prairies to northwest ontario and hudson bay. weak troughing of 29.8 
inches moves over the lake saturday night and strengthens to 29.5 
inches through monday as the parent low pressure deepens to 29.4 
inches over northern ontario and james bay.



lsz267-300800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt wed apr 29 2026

.rest of tonight...northwest winds 10 to 20 knots veering north
late. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots backing northwest in the
afternoon, then increasing to 15 to 25 knots late. waves building
to 1 to 3 feet. 
.thursday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.friday...north winds 10 to 20 knots becoming northwest 15 to
25 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...northwest winds 15 to 25 knots backing west by mid
afternoon. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.saturday night...west winds 10 to 20 knots backing southwest
after midnight. waves subsiding to calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves calm to 2 feet. 
.monday...west winds 10 to 20 knots becoming northwest 15 to
25 knots. a chance of rain showers. waves building to 2 to
4 feet. 

$$

fzus63 kmqt 300201
glfls 
expires:202604300800;;757363

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed apr 29 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...

weak ridging persists between 30.0 and 30.1 inches through early 
saturday as a 30.3 inch high slowly shifts east from the canadian 
prairies to northwest ontario and hudson bay. weak troughing of 29.8 
inches moves over the lake saturday night and strengthens to 29.5 
inches through monday as the parent low pressure deepens to 29.4 
inches over northern ontario and james bay.



lsz162-300800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt wed apr 29 2026 /901 pm cdt wed apr 29 2026/

.rest of tonight...northwest winds 5 to 15 knots veering north
late. a chance of rain and snow showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering south in the
afternoon, then veering southwest late. a slight chance of snow
showers. a slight chance of rain showers by mid afternoon. waves
calm to 2 feet. 
.thursday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots veering south by mid
afternoon. waves calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.monday...west winds 10 to 20 knots. a chance of rain showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 300201
glfls 
expires:202604300800;;757364

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed apr 29 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...

weak ridging persists between 30.0 and 30.1 inches through early 
saturday as a 30.3 inch high slowly shifts east from the canadian 
prairies to northwest ontario and hudson bay. weak troughing of 29.8 
inches moves over the lake saturday night and strengthens to 29.5 
inches through monday as the parent low pressure deepens to 29.4 
inches over northern ontario and james bay.



lsz263-300800-
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-
1001 pm edt wed apr 29 2026

.rest of tonight...northwest winds less than 10 knots becoming
north 5 to 15 knots after midnight. a chance of rain and snow
showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots becoming west less than
10 knots late. a chance of rain showers through early afternoon.
a chance of snow showers. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots veering north after
midnight. a slight chance of rain and snow showers through
midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west. a chance of
rain showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 300201
glfls 
expires:202604300800;;757365

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed apr 29 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...

weak ridging persists between 30.0 and 30.1 inches through early 
saturday as a 30.3 inch high slowly shifts east from the canadian 
prairies to northwest ontario and hudson bay. weak troughing of 29.8 
inches moves over the lake saturday night and strengthens to 29.5 
inches through monday as the parent low pressure deepens to 29.4 
inches over northern ontario and james bay.



lsz264-300800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt wed apr 29 2026

.rest of tonight...northwest winds 5 to 15 knots veering north
late. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest late. a
slight chance of snow showers by mid afternoon. waves calm to
2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...northwest winds 5 to 15 knots backing southwest by
mid afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west. waves
building to 1 to 3 feet. 

$$

fzus63 kmqt 300201
glfls 
expires:202604300800;;757366

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed apr 29 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...

weak ridging persists between 30.0 and 30.1 inches through early 
saturday as a 30.3 inch high slowly shifts east from the canadian 
prairies to northwest ontario and hudson bay. weak troughing of 29.8 
inches moves over the lake saturday night and strengthens to 29.5 
inches through monday as the parent low pressure deepens to 29.4 
inches over northern ontario and james bay.



lsz265-300800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt wed apr 29 2026

.rest of tonight...northwest winds 5 to 15 knots increasing to
10 to 20 knots late. a slight chance of rain and snow showers by
midnight. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...northwest winds 10 to 20 knots veering north
late. waves calm to 2 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.friday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots. waves calm to 2 feet.
.saturday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...west winds 10 to 20 knots. waves calm to 2 feet. 
.monday...northwest winds 10 to 20 knots backing west. a chance
of rain showers. waves building to 1 to 3 feet. 

$$