fzus63 kdtx 051324
glflh 
expires:202608052130;;660754

open lake forecast for lake huron
national weather service detroit/pontiac mi
924 am edt wed aug 5 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 cold front, 29.90 inches, will slowly move across
lake huron this afternoon and into lake erie by thursday morning.
this front will provide a chance for showers and thunderstorms.
the front will diminish across the eastern great lakes thursday,
leaving light winds across the region friday. increasing humidity
will support unstable conditions across much of the region,
supporting a chance for showers and thunderstorms through the
weekend.


lhz361-052130-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
924 am edt wed aug 5 2026

.rest of today...east winds 5 to 10 knots in the late morning and
early afternoon becoming light and variable. a chance of showers
late in the morning...then a chance of showers and thunderstorms
in the afternoon. waves 2 feet or less. 
.tonight...light and variable winds becoming northwest 5 to
10 knots early in the morning. a chance of showers in the
evening. waves 2 feet or less. 
.thursday...light and variable winds. waves 2 feet or less. 
.thursday night...light and variable winds becoming south 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.friday...south winds 5 to 10 knots backing to the southeast.
waves 2 feet or less. 
.saturday...west winds 5 to 10 knots increasing to 10 to 15 knots
early in the evening...then becoming light and variable by
midnight. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots veering to the northwest
by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 051324
glflh 
expires:202608052130;;660755

open lake forecast for lake huron
national weather service detroit/pontiac mi
924 am edt wed aug 5 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 cold front, 29.90 inches, will slowly move across
lake huron this afternoon and into lake erie by thursday morning.
this front will provide a chance for showers and thunderstorms.
the front will diminish across the eastern great lakes thursday,
leaving light winds across the region friday. increasing humidity
will support unstable conditions across much of the region,
supporting a chance for showers and thunderstorms through the
weekend.


lhz362-363-052130-
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-
924 am edt wed aug 5 2026

.rest of today...east winds 5 to 10 knots veering to the south
late in the afternoon. a chance of showers. waves 1 to 3 feet. 
.tonight...east winds 5 to 10 knots early in the evening becoming
light and variable. a chance of showers. waves 2 feet or less. 
.thursday...light and variable winds. a chance of showers in the
morning. waves 2 feet or less. 
.thursday night...light and variable winds. waves 2 feet or less.
.friday...light and variable winds becoming southeast 5 to
10 knots. waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots becoming light and
variable. waves 1 to 3 feet. 
.sunday...southwest winds 5 to 10 knots. a chance of showers
until early evening. waves 2 feet or less. 


$$

fzus63 kdtx 051324
glflh 
expires:202608052130;;660756

open lake forecast for lake huron
national weather service detroit/pontiac mi
924 am edt wed aug 5 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 cold front, 29.90 inches, will slowly move across
lake huron this afternoon and into lake erie by thursday morning.
this front will provide a chance for showers and thunderstorms.
the front will diminish across the eastern great lakes thursday,
leaving light winds across the region friday. increasing humidity
will support unstable conditions across much of the region,
supporting a chance for showers and thunderstorms through the
weekend.


lhz462>464-052130-
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-
924 am edt wed aug 5 2026

.rest of today...south winds 5 to 10 knots becoming southeast
10 to 15 knots in the afternoon. waves 2 feet or less. 
.tonight...south winds 5 to 10 knots veering to the southwest
early in the morning. a chance of showers after midnight. waves
2 feet or less. 
.thursday...west winds 5 to 10 knots veering to the north in the
late morning and afternoon. a chance of showers. waves 2 feet or
less. 
.thursday night...northeast winds 5 to 10 knots early in the
evening becoming light and variable. a chance of showers in the
evening. waves 2 feet or less. 
.friday...light and variable winds becoming south 5 to 10 knots
late in the evening. a chance of showers late in the afternoon.
waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.sunday...west winds 5 to 10 knots backing to the southwest. a
chance of showers and thunderstorms...then a chance of showers by
midnight. waves 2 feet or less. 


$$

fzus63 kmkx 051407
glflm 
expires:202608052115;;661935

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
907 am cdt wed aug 5 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...

a stalled front is sitting over southern lake michigan this 
morning. light and variable winds can be expected through thursday
as the front shifts south and weakens and high pressure moves 
into the region. intermittent showers and thunderstorms can also 
be expected today into tonight.

a prolonged period of south-southwest winds will then become 
established across lake michigan late thursday night through 
sunday, with the exception of northwest winds saturday morning 
with a brief cold frontal passage.


lmz261-362-364-366-563-565-567-868-052115-
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-
907 am cdt wed aug 5 2026

sheboygan wi to pentwater mi north...

.rest of today...north winds 5 to 10 kt veering to southeast.
slight chance of showers late this morning, then slight chance of
showers and thunderstorms this afternoon. waves 1 to 2 ft. 
.tonight...east winds 5 to 10 kt becoming south. slight chance of
showers in the evening. patchy fog overnight. waves 1 ft or less.
.thursday...south winds 5 to 10 kt becoming southwest late in the
morning, then becoming 10 to 20 kt early in the afternoon
becoming southwest 10 to 20 kt late. waves 1 to 2 ft. 
.thursday night...south winds 10 to 15 kt. waves 1 to 2 ft. 
.friday...south winds 10 to 20 kt. waves 1 to 3 ft. 
.friday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. chance of showers. waves 2 to 4 ft. 
.saturday...northwest winds 10 to 20 kt becoming southwest. waves
1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 051407
glflm 
expires:202608052115;;661936

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
907 am cdt wed aug 5 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...

a stalled front is sitting over southern lake michigan this 
morning. light and variable winds can be expected through thursday
as the front shifts south and weakens and high pressure moves 
into the region. intermittent showers and thunderstorms can also 
be expected today into tonight.

a prolonged period of south-southwest winds will then become 
established across lake michigan late thursday night through 
sunday, with the exception of northwest winds saturday morning 
with a brief cold frontal passage.


lmz080-669-671-673-675-777-779-870-872-874-876-878-052115-
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-
907 am cdt wed aug 5 2026

sheboygan wi to pentwater mi south...

.rest of today...southwest winds 10 to 15 kt becoming south.
slight chance of showers late this morning, then chance of
showers and slight chance of thunderstorms this afternoon. waves
1 to 2 ft. 
.tonight...southwest winds 10 to 15 kt veering to north. chance
of showers and slight chance of thunderstorms. patchy fog 
overnight. waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt becoming north. waves 1 ft
or less. 
.thursday night...east winds 5 to 10 kt veering to south. waves
nearly calm. 
.friday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 ft or less building to 1 to 3 ft. 
.friday night...south winds 10 to 20 kt becoming southwest. waves
1 to 3 ft. 
.saturday...west winds 10 to 20 kt becoming southwest 10 to
15 kt. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt becoming south. chance of
showers. waves 1 to 3 ft.  

$$

fzus63 kmqt 051401
glfls 
expires:202608052000;;661658

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 5 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...

high pressure over the plains is extending 30.0 inch ridging over 
the lake this morning, which remains through thursday. for the late 
week and into the weekend, pressure over lake superior will remain 
around 29.9 inches between a 30.3 inch bermuda high and 29.5 inch 
low pressure near the western shores of hudson bay. on monday, 
pressure over lake superior rises slightly to 30.0 inches as the 
hudson bay low shifts east and ridging builds in from the western 
provinces of canada.




lsz162-052000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt wed aug 5 2026 /901 am cdt wed aug 5 2026/

.rest of today...southwest winds 5 to 15 knots backing south
late. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering southwest late.
waves calm to 2 feet. 
.thursday...southwest winds 15 to 25 knots. waves building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.thursday night...southwest winds 15 to 25 knots. a slight chance
of showers and thunderstorms after midnight. waves building to
2 to 4 feet. 
.friday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a chance of showers and a slight
chance of thunderstorms. waves subsiding to calm to 2 feet. 
.friday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.sunday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 051401
glfls 
expires:202608052000;;661659

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 5 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...

high pressure over the plains is extending 30.0 inch ridging over 
the lake this morning, which remains through thursday. for the late 
week and into the weekend, pressure over lake superior will remain 
around 29.9 inches between a 30.3 inch bermuda high and 29.5 inch 
low pressure near the western shores of hudson bay. on monday, 
pressure over lake superior rises slightly to 30.0 inches as the 
hudson bay low shifts east and ridging builds in from the western 
provinces of canada.




lsz263-052000-
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 am edt wed aug 5 2026

.rest of today...southwest winds 5 to 15 knots increasing to
10 to 20 knots in the afternoon, then backing south late. waves
calm to 2 feet building to 1 to 3 feet. 
.tonight...south winds 5 to 15 knots increasing to 10 to 20 knots
after midnight, then veering southwest late. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.thursday...southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then diminishing to 15 to 25 knots
late. waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.thursday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...southwest winds 15 to 25 knots. a slight chance of
showers through early afternoon. a slight chance of
thunderstorms. showers likely by mid afternoon. waves subsiding
to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.saturday...southwest winds 15 to 25 knots becoming west 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 051401
glfls 
expires:202608052000;;661660

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 5 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...

high pressure over the plains is extending 30.0 inch ridging over 
the lake this morning, which remains through thursday. for the late 
week and into the weekend, pressure over lake superior will remain 
around 29.9 inches between a 30.3 inch bermuda high and 29.5 inch 
low pressure near the western shores of hudson bay. on monday, 
pressure over lake superior rises slightly to 30.0 inches as the 
hudson bay low shifts east and ridging builds in from the western 
provinces of canada.




lsz264-052000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt wed aug 5 2026

.rest of today...southwest winds 5 to 15 knots backing south
late. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots increasing to 10 to 20 knots
late. waves calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then backing south late. waves
building to 2 to 4 feet. 
.thursday night...south winds 15 to 25 knots veering southwest
after midnight. waves subsiding to 1 to 3 feet, then building to
3 to 5 feet occasionally to 7 feet. 
.friday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a slight chance of showers through
early afternoon, then showers likely and a slight chance of
thunderstorms by mid afternoon. waves subsiding to 1 to 3 feet. 
.friday night...southwest winds 5 to 15 knots veering west after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 051401
glfls 
expires:202608052000;;661661

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 5 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...

high pressure over the plains is extending 30.0 inch ridging over 
the lake this morning, which remains through thursday. for the late 
week and into the weekend, pressure over lake superior will remain 
around 29.9 inches between a 30.3 inch bermuda high and 29.5 inch 
low pressure near the western shores of hudson bay. on monday, 
pressure over lake superior rises slightly to 30.0 inches as the 
hudson bay low shifts east and ridging builds in from the western 
provinces of canada.




lsz265-052000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt wed aug 5 2026

.rest of today...west winds 5 to 15 knots backing east in the
afternoon. waves calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering southwest late.
waves calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots backing south in the
afternoon. waves calm to 2 feet. 
.thursday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday...south winds 10 to 20 knots. showers likely and a slight
chance of thunderstorms by mid afternoon. waves subsiding to calm
to 2 feet. 
.friday night...west winds 10 to 20 knots. showers likely through
midnight. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots backing southwest. waves
calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots backing west. waves calm
to 2 feet. 

$$

fzus63 kmqt 051401
glfls 
expires:202608052000;;661662

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 5 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...

high pressure over the plains is extending 30.0 inch ridging over 
the lake this morning, which remains through thursday. for the late 
week and into the weekend, pressure over lake superior will remain 
around 29.9 inches between a 30.3 inch bermuda high and 29.5 inch 
low pressure near the western shores of hudson bay. on monday, 
pressure over lake superior rises slightly to 30.0 inches as the 
hudson bay low shifts east and ridging builds in from the western 
provinces of canada.




lsz266-052000-
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 am edt wed aug 5 2026

.rest of today...west winds 5 to 15 knots backing east late.
waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. waves calm to 2 feet. 
.thursday...south winds 10 to 20 knots. waves building to 1 to
3 feet. 
.thursday night...south winds 20 to 30 knots. waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.friday...south winds 10 to 20 knots. a chance of showers and a
slight chance of thunderstorms by mid afternoon. waves subsiding
to 1 to 3 feet. 
.friday night...southwest winds 10 to 20 knots veering west after
midnight. showers likely through midnight. waves subsiding to
calm to 2 feet. 
.saturday...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 051401
glfls 
expires:202608052000;;661663

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 5 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...

high pressure over the plains is extending 30.0 inch ridging over 
the lake this morning, which remains through thursday. for the late 
week and into the weekend, pressure over lake superior will remain 
around 29.9 inches between a 30.3 inch bermuda high and 29.5 inch 
low pressure near the western shores of hudson bay. on monday, 
pressure over lake superior rises slightly to 30.0 inches as the 
hudson bay low shifts east and ridging builds in from the western 
provinces of canada.




lsz267-052000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt wed aug 5 2026

.rest of today...southwest winds 5 to 15 knots veering northwest
late. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots backing southeast late.
waves calm to 2 feet. 
.thursday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 2 to 4 feet. 
.friday...south winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.friday night...south winds 10 to 20 knots becoming west 5 to
15 knots after midnight. showers through midnight. a chance of
thunderstorms. a chance of showers after midnight. waves building
to 1 to 3 feet, then subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$