fzus63 kdtx 071913
glflh 
expires:202605080315;;179737

open lake forecast for lake huron
national weather service detroit/pontiac mi
313 pm edt thu may 7 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...light and variable winds today and friday organize out
of the southwest saturday. breezy southwest flow is expected
ahead of a cold front that sweeps across the area saturday night
bringing shower and thunderstorm chances to the great lakes.


lhz361-362-080315-
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-
313 pm edt thu may 7 2026

.tonight...south winds 5 to 10 knots veering to the southwest
after midnight. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots becoming southeast 10 to
15 knots late in the afternoon. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots after midnight. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. a chance of showers.
waves 3 to 5 feet. 
.saturday night...northwest winds 15 to 20 knots. waves 5 to
7 feet. waves occasionally around 10 feet. 
.sunday...west winds 10 to 15 knots. waves 3 to 5 feet. 
.monday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots by midnight. waves 3 to 5 feet. 
.tuesday...northwest winds 5 to 10 knots veering to the east .
waves 1 to 3 feet. 


$$

fzus63 kdtx 071913
glflh 
expires:202605080315;;179738

open lake forecast for lake huron
national weather service detroit/pontiac mi
313 pm edt thu may 7 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...light and variable winds today and friday organize out
of the southwest saturday. breezy southwest flow is expected
ahead of a cold front that sweeps across the area saturday night
bringing shower and thunderstorm chances to the great lakes.


lhz363-462>464-080315-
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-
313 pm edt thu may 7 2026

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


$$

fzus63 kmkx 071921
glflm 
expires:202605080330;;179858

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
221 pm cdt thu may 7 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...

weak high pressure of 29.9 inches slides further away from the 
area overnight. incrasing southerly winds develop on friday
resulting in building waves, with gusty southwest to west winds 
expected on saturday. the next cold front sweeps across the area 
late saturday night into sunday bringing a shift of the winds
to the northwest as high pressure around 30.2 inches builds 
into the region sunday afternoon into monday.


lmz261-362-364-366-563-565-567-868-080330-
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-
221 pm cdt thu may 7 2026

sheboygan wi to pentwater mi north...

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

$$

fzus63 kmkx 071921
glflm 
expires:202605080330;;179859

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
221 pm cdt thu may 7 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...

weak high pressure of 29.9 inches slides further away from the 
area overnight. incrasing southerly winds develop on friday
resulting in building waves, with gusty southwest to west winds 
expected on saturday. the next cold front sweeps across the area 
late saturday night into sunday bringing a shift of the winds
to the northwest as high pressure around 30.2 inches builds 
into the region sunday afternoon into monday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-080330-
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-
221 pm cdt thu may 7 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 15 kt becoming southwest. waves 1 to
2 ft. 
.friday...southwest winds 5 to 10 kt increasing to 10 to 15 kt
late in the morning, then becoming south early in the afternoon
increasing to 10 to 20 kt late. waves 2 to 4 ft. 
.friday night...south winds 10 to 20 kt becoming southwest. waves
3 to 5 ft. 
.saturday...southwest winds 15 to 25 kt. waves 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt diminishing to 5 to
10 kt overnight. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 2 ft. 
.sunday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.monday...north winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 2 ft. 
.tuesday...southeast winds 10 to 20 kt increasing to 15 to 25 kt.
chance of rain showers. waves 2 to 4 ft building to 3 to 5 ft.  

$$

fzus63 kmqt 072001
glfls 
expires:202605080800;;180698

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu may 7 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 troughing of around 29.8 inches remains over the lake until 
friday morning associated with a pair of 29.4 inch lows (one over 
labrador and one over hudson bay). the hudson low drops a 29.6 inch 
trough over western lake superior friday evening, passing over the 
rest of the lake overnight into saturday morning. by saturday 
evening, lake superior will be situated between a 29.5 inch low over 
western quebec and a 30.2 inch high over saskatchewan. by sunday 
afternoon, the low will shift into central quebec while the high 
moves over lake winnipeg. for monday afternoon, the high builds to 
30.3 inches and resides over lake superior. meanwhile, monday 
evening, a 29.7 inch low develops over the northern plains. this low 
passes through or near the upper great lakes by tuesday afternoon as 
the 30.1 inch high shifts east.



lsz162-080800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt thu may 7 2026 /301 pm cdt thu may 7 2026/

.late this afternoon...southwest winds 5 to 15 knots. a chance of
rain showers. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a chance of rain showers
by mid afternoon. waves calm to 2 feet. 
.friday night...north winds 5 to 15 knots backing west after
midnight, then becoming northwest 10 to 20 knots late. a chance
of rain showers. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. a slight chance of rain showers
through early afternoon, then sprinkles by mid afternoon. waves
calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots backing east. waves calm
to 2 feet. 
.tuesday...east winds 5 to 15 knots backing north. a chance of
rain showers. waves calm to 2 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202605080800;;180699

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu may 7 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 troughing of around 29.8 inches remains over the lake until 
friday morning associated with a pair of 29.4 inch lows (one over 
labrador and one over hudson bay). the hudson low drops a 29.6 inch 
trough over western lake superior friday evening, passing over the 
rest of the lake overnight into saturday morning. by saturday 
evening, lake superior will be situated between a 29.5 inch low over 
western quebec and a 30.2 inch high over saskatchewan. by sunday 
afternoon, the low will shift into central quebec while the high 
moves over lake winnipeg. for monday afternoon, the high builds to 
30.3 inches and resides over lake superior. meanwhile, monday 
evening, a 29.7 inch low develops over the northern plains. this low 
passes through or near the upper great lakes by tuesday afternoon as 
the 30.1 inch high shifts east.



lsz263-080800-
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 pm edt thu may 7 2026

.late this afternoon...southwest winds 5 to 15 knots. sprinkles.
waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a chance of rain showers
by mid afternoon. waves calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering northwest
late. a chance of rain showers. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing west by mid
afternoon. a chance of rain showers. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots veering northwest
after midnight. waves building to 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.tuesday...east winds 5 to 15 knots backing northeast. a chance
of rain showers. waves calm to 2 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202605080800;;180700

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu may 7 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 troughing of around 29.8 inches remains over the lake until 
friday morning associated with a pair of 29.4 inch lows (one over 
labrador and one over hudson bay). the hudson low drops a 29.6 inch 
trough over western lake superior friday evening, passing over the 
rest of the lake overnight into saturday morning. by saturday 
evening, lake superior will be situated between a 29.5 inch low over 
western quebec and a 30.2 inch high over saskatchewan. by sunday 
afternoon, the low will shift into central quebec while the high 
moves over lake winnipeg. for monday afternoon, the high builds to 
30.3 inches and resides over lake superior. meanwhile, monday 
evening, a 29.7 inch low develops over the northern plains. this low 
passes through or near the upper great lakes by tuesday afternoon as 
the 30.1 inch high shifts east.



lsz264-080800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt thu may 7 2026

.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a chance of rain showers
by mid afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots veering southwest after
midnight, then veering northwest late. a chance of rain showers.
flurries after midnight. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots backing west by mid
afternoon. a slight chance of rain showers, possibly mixed with
snow through early afternoon, then sprinkles and flurries by mid
afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots veering northwest
after midnight. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.tuesday...southeast winds 5 to 15 knots backing east. waves calm
to 2 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202605080800;;180701

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu may 7 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 troughing of around 29.8 inches remains over the lake until 
friday morning associated with a pair of 29.4 inch lows (one over 
labrador and one over hudson bay). the hudson low drops a 29.6 inch 
trough over western lake superior friday evening, passing over the 
rest of the lake overnight into saturday morning. by saturday 
evening, lake superior will be situated between a 29.5 inch low over 
western quebec and a 30.2 inch high over saskatchewan. by sunday 
afternoon, the low will shift into central quebec while the high 
moves over lake winnipeg. for monday afternoon, the high builds to 
30.3 inches and resides over lake superior. meanwhile, monday 
evening, a 29.7 inch low develops over the northern plains. this low 
passes through or near the upper great lakes by tuesday afternoon as 
the 30.1 inch high shifts east.



lsz265-080800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt thu may 7 2026

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

$$

fzus63 kmqt 072001
glfls 
expires:202605080800;;180702

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu may 7 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 troughing of around 29.8 inches remains over the lake until 
friday morning associated with a pair of 29.4 inch lows (one over 
labrador and one over hudson bay). the hudson low drops a 29.6 inch 
trough over western lake superior friday evening, passing over the 
rest of the lake overnight into saturday morning. by saturday 
evening, lake superior will be situated between a 29.5 inch low over 
western quebec and a 30.2 inch high over saskatchewan. by sunday 
afternoon, the low will shift into central quebec while the high 
moves over lake winnipeg. for monday afternoon, the high builds to 
30.3 inches and resides over lake superior. meanwhile, monday 
evening, a 29.7 inch low develops over the northern plains. this low 
passes through or near the upper great lakes by tuesday afternoon as 
the 30.1 inch high shifts east.



lsz266-080800-
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 pm edt thu may 7 2026

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots backing south late.
sprinkles by mid afternoon. waves calm to 2 feet. 
.friday night...south winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering west late. a chance of rain
showers. flurries after midnight. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots. a chance of rain
showers, possibly mixed with snow. waves building to 2 to 4 feet.
.saturday night...northwest winds 15 to 25 knots. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.sunday...northwest winds 15 to 25 knots. waves 2 to 4 feet. 
.sunday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 
.tuesday...southeast winds 10 to 20 knots backing east. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202605080800;;180703

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu may 7 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 troughing of around 29.8 inches remains over the lake until 
friday morning associated with a pair of 29.4 inch lows (one over 
labrador and one over hudson bay). the hudson low drops a 29.6 inch 
trough over western lake superior friday evening, passing over the 
rest of the lake overnight into saturday morning. by saturday 
evening, lake superior will be situated between a 29.5 inch low over 
western quebec and a 30.2 inch high over saskatchewan. by sunday 
afternoon, the low will shift into central quebec while the high 
moves over lake winnipeg. for monday afternoon, the high builds to 
30.3 inches and resides over lake superior. meanwhile, monday 
evening, a 29.7 inch low develops over the northern plains. this low 
passes through or near the upper great lakes by tuesday afternoon as 
the 30.1 inch high shifts east.



lsz267-080800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt thu may 7 2026

.late this afternoon...west winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots backing south in the
afternoon, then veering southwest late. sprinkles by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of rain showers. waves calm to
2 feet. 
.saturday...northwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of rain showers. a chance of
snow showers by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday night...northwest winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots backing east. waves calm
to 2 feet. 

$$