fzus63 kdtx 280136
glflh 
expires:202608280945;;474583

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 pm edt thu aug 27 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...high pressure, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lhz361-280945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
936 pm edt thu aug 27 2026

.rest of tonight...northwest winds 10 to 15 knots becoming north
5 to 10 knots after midnight. waves 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots backing to the west early
in the afternoon...then becoming light and variable late in the
afternoon. waves 2 feet or less. 
.friday night...light and variable winds becoming south 5 to
10 knots after midnight. waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...southwest winds 5 to 10 knots. a chance of
showers. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots backing to the east late
in the afternoon. a chance of showers. a chance of thunderstorms.
rain showers likely late in the afternoon. waves 2 feet or less. 
.monday...east winds 5 to 10 knots. a chance of showers. a chance
of thunderstorms until early evening. waves 2 feet or less. 
.tuesday...east winds 5 to 10 knots veering to the west . a
chance of showers early in the morning. a chance of showers early
in the evening. waves 2 feet or less. 


$$

fzus63 kdtx 280136
glflh 
expires:202608280945;;474584

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 pm edt thu aug 27 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...high pressure, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lhz362-363-280945-
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-
936 pm edt thu aug 27 2026

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


$$

fzus63 kdtx 280136
glflh 
expires:202608280945;;474585

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 pm edt thu aug 27 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...high pressure, 30.20 inches, drifts over the central
great lakes through early saturday. active pattern returns late
sunday into monday as a warm front lifts through the area
bringing showers and storms.


lhz462>464-280945-
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-
936 pm edt thu aug 27 2026

.rest of tonight...north winds 10 to 15 knots decreasing to 5 to
10 knots early in the morning. waves 1 to 3 feet. 
.friday...north winds 5 to 10 knots. waves 2 feet or less. 
.friday night...light and variable winds becoming east 5 to
10 knots by midnight...then veering to the south after midnight.
waves 2 feet or less. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon. waves 2 feet or less. 
.saturday night...south winds 5 to 10 knots increasing to 10 to
15 knots by midnight...then decreasing to 5 to 10 knots after
midnight. waves 1 to 3 feet. 
.sunday...southwest winds 5 to 10 knots backing to the southeast
late in the afternoon. a chance of showers late in the morning.
rain showers likely and a chance of thunderstorms late in the
afternoon. waves 2 feet or less. 
.monday...south winds 5 to 10 knots. showers likely and a chance
of thunderstorms early in the morning...then a chance of showers.
waves 2 feet or less. 
.tuesday...southwest winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 


$$

fzus63 kmkx 280149
glflm 
expires:202608280930;;474838

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
849 pm cdt thu aug 27 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 of 30.1 inches will move from ontario into the
northern great lakes by friday morning then shift into the lower
great lakes by friday evening. light northeast to easterly flow is
expected tonight becoming light to modest southerly flow for
friday afternoon and night. modest to breezy southerly winds will
then prevail this weekend and on monday as a trough of low
pressure slowly moves from the great plains to the upper
mississippi river valley. rounds of thunderstorms can be expected
over lake michigan from saturday night into early next week. 



lmz261-362-364-366-563-565-567-868-280930-
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-
849 pm cdt thu aug 27 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northeast winds 10 to 15 kt becoming east 5 to
10 kt. waves 1 to 2 ft. 
.friday...east winds 5 to 10 kt veering to south 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 3 ft. 
.saturday...southwest winds 15 to 25 kt. waves 3 to 5 ft.
.saturday night...south winds 15 to 25 kt. chance of showers
overnight. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...south winds to 30 kt. chance of showers in the morning,
then showers likely with a chance of thunderstorms in the
afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.sunday night...south winds to 30 kt diminishing to 10 to 20 kt.
chance of showers. waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.monday...south winds 15 to 25 kt. chance of showers. waves 4 to
6 ft occasionally to 8 ft. 
.tuesday...west winds 10 to 20 kt becoming southwest. waves 1 to
3 ft.  

$$

fzus63 kmkx 280149
glflm 
expires:202608280930;;474839

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
849 pm cdt thu aug 27 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 of 30.1 inches will move from ontario into the
northern great lakes by friday morning then shift into the lower
great lakes by friday evening. light northeast to easterly flow is
expected tonight becoming light to modest southerly flow for
friday afternoon and night. modest to breezy southerly winds will
then prevail this weekend and on monday as a trough of low
pressure slowly moves from the great plains to the upper
mississippi river valley. rounds of thunderstorms can be expected
over lake michigan from saturday night into early next week. 



lmz080-669-671-673-675-777-779-870-872-874-876-878-280930-
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-
849 pm cdt thu aug 27 2026

sheboygan wi to pentwater mi south...

.rest of tonight...northeast winds 5 to 10 kt becoming east.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.friday...southeast winds 5 to 10 kt becoming south 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 3 ft. 
.saturday...southwest winds 10 to 20 kt becoming south. waves
3 to 5 ft. 
.saturday night...south winds 15 to 25 kt. chance of showers.
waves 3 to 5 ft. 
.sunday...south winds to 30 kt. chance of showers. waves 6 to
9 ft occasionally to 12 ft. 
.sunday night...south winds to 30 kt diminishing to 10 to 20 kt.
chance of showers and thunderstorms. waves 5 to 8 ft occasionally
to 10 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.monday...southwest winds 15 to 25 kt becoming south. chance of
showers. waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...southwest winds 10 to 20 kt becoming south. chance of
showers. waves 2 to 4 ft.  

$$

fzus63 kmqt 280201
glfls 
expires:202608280800;;475070

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu aug 27 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 30.1 inch high pressure over northern manitoba stretches towards 
lake superior through tonight, eventually becoming centered over 
lake superior at 30.2 inches by friday morning before continuing 
into new england on saturday. saturday night, a low pressure over 
the central to northern plains deepens to 29.6 inches. this low 
approaches the great lakes over the course of early next week, with 
heights over lake superior falling to 29.8 inches by monday 
afternoon.




lsz162-280800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu aug 27 2026 /901 pm cdt thu aug 27 2026/

.rest of tonight...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.friday...northeast winds less than 10 knots becoming east 5 to
15 knots in the afternoon, then veering southeast late. waves
calm to 2 feet. 
.friday night...east winds 5 to 15 knots becoming northeast less
than 10 knots after midnight, then increasing to 5 to 15 knots
late. a chance of showers after midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing northeast
after midnight. a chance of showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.sunday...east winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. a chance of showers. waves building to
2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots. a chance of
showers and thunderstorms. waves subsiding to 1 to 3 feet. 
.monday...northeast winds 10 to 20 knots. waves subsiding to calm
to 2 feet. 
.tuesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 280201
glfls 
expires:202608280800;;475071

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu aug 27 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 30.1 inch high pressure over northern manitoba stretches towards 
lake superior through tonight, eventually becoming centered over 
lake superior at 30.2 inches by friday morning before continuing 
into new england on saturday. saturday night, a low pressure over 
the central to northern plains deepens to 29.6 inches. this low 
approaches the great lakes over the course of early next week, with 
heights over lake superior falling to 29.8 inches by monday 
afternoon.




lsz263-280800-
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 thu aug 27 2026

.rest of tonight...northeast winds less than 10 knots. waves calm
to 2 feet. 
.friday...east winds less than 10 knots becoming south 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots veering south late.
a slight chance of showers after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast by mid
afternoon. a chance of showers. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 15 to
25 knots by mid afternoon. a chance of showers. waves building to
1 to 3 feet. 
.sunday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a chance of showers and thunderstorms.
waves subsiding to calm to 2 feet. 
.monday...east winds 10 to 20 knots veering southwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 280201
glfls 
expires:202608280800;;475072

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu aug 27 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 30.1 inch high pressure over northern manitoba stretches towards 
lake superior through tonight, eventually becoming centered over 
lake superior at 30.2 inches by friday morning before continuing 
into new england on saturday. saturday night, a low pressure over 
the central to northern plains deepens to 29.6 inches. this low 
approaches the great lakes over the course of early next week, with 
heights over lake superior falling to 29.8 inches by monday 
afternoon.




lsz264-280800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt thu aug 27 2026

.rest of tonight...northwest winds less than 10 knots. waves calm
to 2 feet. 
.friday...west winds less than 10 knots becoming south 5 to
15 knots late. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots diminishing to less
than 10 knots late. waves calm to 2 feet. 
.saturday...southeast winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. a slight chance of showers. waves calm
to 2 feet. 
.saturday night...southeast winds 5 to 15 knots. a slight chance
of showers. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.sunday night...east winds 5 to 15 knots. a chance of showers.
waves building to 1 to 3 feet. 
.monday...east winds 10 to 20 knots becoming southwest 5 to
15 knots. a chance of thunderstorms. a chance of showers. waves
subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering west. waves calm
to 2 feet. 

$$

fzus63 kmqt 280201
glfls 
expires:202608280800;;475073

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu aug 27 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 30.1 inch high pressure over northern manitoba stretches towards 
lake superior through tonight, eventually becoming centered over 
lake superior at 30.2 inches by friday morning before continuing 
into new england on saturday. saturday night, a low pressure over 
the central to northern plains deepens to 29.6 inches. this low 
approaches the great lakes over the course of early next week, with 
heights over lake superior falling to 29.8 inches by monday 
afternoon.




lsz265-280800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt thu aug 27 2026

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

$$

fzus63 kmqt 280201
glfls 
expires:202608280800;;475074

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu aug 27 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 30.1 inch high pressure over northern manitoba stretches towards 
lake superior through tonight, eventually becoming centered over 
lake superior at 30.2 inches by friday morning before continuing 
into new england on saturday. saturday night, a low pressure over 
the central to northern plains deepens to 29.6 inches. this low 
approaches the great lakes over the course of early next week, with 
heights over lake superior falling to 29.8 inches by monday 
afternoon.




lsz266-280800-
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 thu aug 27 2026

.rest of tonight...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then veering north late. waves calm
to 2 feet. 
.friday...northwest winds 5 to 15 knots backing southwest late.
waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast by mid
afternoon. a chance of showers by mid afternoon. waves calm to
2 feet. 
.saturday night...southeast winds 10 to 20 knots veering south
after midnight. a chance of showers. waves calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots backing east by mid
afternoon. a chance of showers. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots. a chance of showers.
waves building to 1 to 3 feet. 
.monday...east winds 10 to 20 knots veering south. a chance of
showers and thunderstorms. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 280201
glfls 
expires:202608280800;;475075

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu aug 27 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 30.1 inch high pressure over northern manitoba stretches towards 
lake superior through tonight, eventually becoming centered over 
lake superior at 30.2 inches by friday morning before continuing 
into new england on saturday. saturday night, a low pressure over 
the central to northern plains deepens to 29.6 inches. this low 
approaches the great lakes over the course of early next week, with 
heights over lake superior falling to 29.8 inches by monday 
afternoon.




lsz267-280800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt thu aug 27 2026

.rest of tonight...northwest winds 10 to 20 knots diminishing to
5 to 15 knots late. waves calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing west in the
afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots increasing to 10 to
20 knots late. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast by mid
afternoon. a chance of showers by mid afternoon. waves calm to
2 feet. 
.saturday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of showers. waves calm to
2 feet. 
.sunday...southeast winds 10 to 20 knots. a chance of showers
through early afternoon. showers likely by mid afternoon. waves
calm to 2 feet. 
.sunday night...east winds 10 to 20 knots. a chance of showers.
waves building to 1 to 3 feet. 
.monday...east winds 10 to 20 knots veering south. a chance of
showers. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots. waves calm to 2 feet. 

$$