fzus63 kdtx 010724
glflh 
expires:202605011530;;824535

open lake forecast for lake huron
national weather service detroit/pontiac mi
324 am edt fri may 1 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 slow moving low pressure system will continue to
impact the great lakes through the end of the week. this will
reinforce light north to northwest flow and will bring periodic
rain showers.


lhz361-362-011530-
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-
324 am edt fri may 1 2026

.today...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late evening and overnight. 
.saturday...west winds 5 to 10 knots. waves 1 to 3 feet. 
.saturday night...southwest winds 5 to 10 knots. waves 1 to
3 feet. 
.sunday...south winds 5 to 10 knots increasing to 10 to 15 knots.
waves 1 to 3 feet building to 3 to 5 feet late in the afternoon. 
.monday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of showers . waves 3 to 5 feet building to
6 to 9 feet . waves occasionally around 12 feet. 
.tuesday...west winds 15 to 20 knots decreasing to 10 to 15 knots
until early evening...then veering to the west 10 to 15 knots by
midnight. a chance of showers . waves 4 to 6 feet subsiding to
2 to 4 feet by midnight. waves occasionally around 8 feet. 


$$

fzus63 kdtx 010724
glflh 
expires:202605011530;;824536

open lake forecast for lake huron
national weather service detroit/pontiac mi
324 am edt fri may 1 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 slow moving low pressure system will continue to
impact the great lakes through the end of the week. this will
reinforce light north to northwest flow and will bring periodic
rain showers.


lhz363-462>464-011530-
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-
324 am edt fri may 1 2026

.today...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.tonight...north winds 5 to 10 knots backing to the northwest
after midnight...then increasing to 10 to 15 knots early in the
morning. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming north 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.saturday night...light and variable winds becoming south 5 to
10 knots by midnight...then veering to the southwest after
midnight. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots increasing to 10 to
15 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.monday...south winds 10 to 15 knots becoming southwest 15 to
20 knots . a chance of showers . waves 4 to 6 feet. 
.tuesday...west winds 10 to 15 knots becoming northeast by
midnight. a chance of showers. waves 3 to 5 feet subsiding to
1 to 3 feet . waves occasionally around 8 feet. 


$$

fzus63 kmkx 010755
glflm 
expires:202605011515;;825362

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 am cdt fri may 1 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...

high pressure around 30.2 inches continues to sit over central 
canada through the end of the week and will bring light and 
varying winds across lake michigan through today. high pressure 
begins to work its way southeastward tracking across lake michigan
tonight through the day saturday. will begin to see more 
southerly winds develop saturday night and pick up into sunday as 
the high pressure continues to track southward while low pressure 
around 29.4 inches treks across ontario. this looks to drag a cold
front week cold front across the lake later sunday turning winds 
more westerly briefly, before another low pressure around 29.1 
inches develops right behind it for monday. expecting a stronger 
cold front to move across the lake through the day monday and turn
winds north-northwesterly overnight into tuesday.


lmz261-362-364-366-563-565-567-868-011515-
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-
255 am cdt fri may 1 2026

sheboygan wi to pentwater mi north...

.today...north winds 10 to 15 kt becoming northwest. waves 1 to
3 ft. 
.tonight...northwest winds 10 to 15 kt becoming north 5 to 10 kt.
waves 1 to 2 ft. 
.saturday...northwest winds 5 to 10 kt becoming west late in the
morning, then becoming southwest 10 to 15 kt early in the
afternoon increasing to 10 to 20 kt late. waves 1 to 3 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest.
waves 1 to 3 ft building to 2 to 4 ft. 
.sunday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
chance of rain showers. waves 4 to 6 ft occasionally to 8 ft. 
.sunday night...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.monday...south winds 15 to 25 kt becoming southwest to 30 kt.
waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft. 
.tuesday...west winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 010755
glflm 
expires:202605011515;;825363

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 am cdt fri may 1 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...

high pressure around 30.2 inches continues to sit over central 
canada through the end of the week and will bring light and 
varying winds across lake michigan through today. high pressure 
begins to work its way southeastward tracking across lake michigan
tonight through the day saturday. will begin to see more 
southerly winds develop saturday night and pick up into sunday as 
the high pressure continues to track southward while low pressure 
around 29.4 inches treks across ontario. this looks to drag a cold
front week cold front across the lake later sunday turning winds 
more westerly briefly, before another low pressure around 29.1 
inches develops right behind it for monday. expecting a stronger 
cold front to move across the lake through the day monday and turn
winds north-northwesterly overnight into tuesday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-011515-
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-
255 am cdt fri may 1 2026

sheboygan wi to pentwater mi south...

.today...north winds 10 to 15 kt increasing to 10 to 20 kt. waves
2 to 4 ft. 
.tonight...north winds 10 to 20 kt diminishing to 5 to 10 kt.
waves 2 to 4 ft subsiding to 1 to 2 ft. 
.saturday...north winds 5 to 10 kt backing to south 10 to 15 kt.
waves 1 to 2 ft. 
.saturday night...south winds 10 to 15 kt becoming southwest
10 to 20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.sunday...southwest winds 15 to 25 kt. chance of rain showers in
the morning. waves 4 to 6 ft occasionally to 8 ft. 
.sunday night...southwest winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday...southwest winds 15 to 25 kt. waves 3 to 5 ft building
to 4 to 6 ft occasionally to 8 ft. 
.tuesday...northwest winds 10 to 20 kt becoming north. chance of
rain showers. waves 2 to 4 ft subsiding to 1 to 3 ft.  

$$

fzus63 kmqt 010801
glfls 
expires:202605012000;;825635

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri may 1 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 over lake 
superior until saturday morning as a 30.3 inch high slowly shifts 
east into northwest ontario and hudson bay. troughing of 29.7 inches 
then moves over the lake saturday night and deepens with time before 
a 29.3 inch low moves over the lake by monday. weak ridging of 29.8 
inches builds back over lake superior by tuesday in the wake of the 
low.



lsz162-012000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt fri may 1 2026 /301 am cdt fri may 1 2026/

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...north winds 5 to 15 knots veering east in the afternoon,
then veering south late. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering west after midnight.
waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing south late.
waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots veering west after
midnight. a slight chance of rain showers through midnight. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves calm to 2 feet. 
.sunday night...west winds 10 to 20 knots backing southwest after
midnight. a chance of rain showers after midnight. waves calm to
2 feet. 
.monday...west winds 15 to 25 knots veering northwest. rain
showers likely. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.tuesday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 010801
glfls 
expires:202605012000;;825636

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri may 1 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 over lake 
superior until saturday morning as a 30.3 inch high slowly shifts 
east into northwest ontario and hudson bay. troughing of 29.7 inches 
then moves over the lake saturday night and deepens with time before 
a 29.3 inch low moves over the lake by monday. weak ridging of 29.8 
inches builds back over lake superior by tuesday in the wake of the 
low.



lsz263-012000-
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-
401 am edt fri may 1 2026

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...north winds 5 to 15 knots backing southwest late. waves
calm to 2 feet. 
.tonight...west winds 5 to 15 knots diminishing to less than
10 knots late. waves calm to 2 feet. 
.saturday...southwest winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing south late. waves calm to
2 feet. 
.saturday night...south winds 5 to 15 knots veering southwest
after midnight. a slight chance of rain showers through midnight.
waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves building to 1 to
3 feet. 
.sunday night...southwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.monday...west winds 15 to 25 knots becoming northwest 10 to
20 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010801
glfls 
expires:202605012000;;825637

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri may 1 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 over lake 
superior until saturday morning as a 30.3 inch high slowly shifts 
east into northwest ontario and hudson bay. troughing of 29.7 inches 
then moves over the lake saturday night and deepens with time before 
a 29.3 inch low moves over the lake by monday. weak ridging of 29.8 
inches builds back over lake superior by tuesday in the wake of the 
low.



lsz264-012000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt fri may 1 2026

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...north winds 5 to 15 knots backing northwest late. waves
calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.saturday...west winds less than 10 knots becoming southwest 5 to
15 knots in the afternoon, then backing south late. waves calm to
2 feet. 
.saturday night...south winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southwest winds 5 to 15 knots veering west by mid
afternoon. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.sunday night...southwest winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.monday...west winds 10 to 20 knots becoming northwest 15 to
25 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010801
glfls 
expires:202605012000;;825638

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri may 1 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 over lake 
superior until saturday morning as a 30.3 inch high slowly shifts 
east into northwest ontario and hudson bay. troughing of 29.7 inches 
then moves over the lake saturday night and deepens with time before 
a 29.3 inch low moves over the lake by monday. weak ridging of 29.8 
inches builds back over lake superior by tuesday in the wake of the 
low.



lsz265-012000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt fri may 1 2026

.early this morning...northwest winds 10 to 20 knots. waves calm
to 2 feet. 
.today...north winds 10 to 20 knots. waves calm to 2 feet. 
.tonight...northwest winds 10 to 20 knots. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing south in the
afternoon, then backing southeast late. waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...southwest winds 10 to 20 knots veering west by mid
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves calm to 2 feet. 
.monday...west winds 20 to 30 knots veering northwest. rain
showers likely. waves building to 3 to 6 feet occasionally to
8 feet. 
.tuesday...northwest winds 15 to 25 knots becoming west 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010801
glfls 
expires:202605012000;;825639

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri may 1 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 over lake 
superior until saturday morning as a 30.3 inch high slowly shifts 
east into northwest ontario and hudson bay. troughing of 29.7 inches 
then moves over the lake saturday night and deepens with time before 
a 29.3 inch low moves over the lake by monday. weak ridging of 29.8 
inches builds back over lake superior by tuesday in the wake of the 
low.



lsz266-012000-
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-
401 am edt fri may 1 2026

.early this morning...north winds 10 to 20 knots. waves calm to
2 feet. 
.today...north winds 10 to 20 knots backing northwest late. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.tonight...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing west in the
afternoon, then backing south late. waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.sunday...south winds 10 to 20 knots veering west by mid
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 10 to 20 knots backing south
after midnight. waves building to 1 to 3 feet. 
.monday...west winds 20 to 30 knots veering northwest. a chance
of rain showers. waves building to 4 to 7 feet occasionally to
9 feet. 
.tuesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010801
glfls 
expires:202605012000;;825640

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri may 1 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 over lake 
superior until saturday morning as a 30.3 inch high slowly shifts 
east into northwest ontario and hudson bay. troughing of 29.7 inches 
then moves over the lake saturday night and deepens with time before 
a 29.3 inch low moves over the lake by monday. weak ridging of 29.8 
inches builds back over lake superior by tuesday in the wake of the 
low.



lsz267-012000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt fri may 1 2026

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...north winds 5 to 15 knots becoming northwest 10 to
20 knots in the afternoon. a slight chance of snow showers by mid
afternoon. waves building to 1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming west 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...south winds 10 to 20 knots veering southwest by mid
afternoon. waves calm to 2 feet. 
.sunday night...west winds 10 to 20 knots backing south after
midnight. waves building to 1 to 3 feet. 
.monday...south winds 15 to 25 knots veering northwest. rain
showers likely, then a chance of rain showers. waves building to
4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots becoming northwest 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$