fzus63 kdtx 151957
glflh 
expires:202607160400;;025755

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt wed jul 15 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 weak cold front continues southward across the 
central great lakes through tonight as canadian wildfire smoke
fills in behind the boundary. weak high pressure follows by 
thursday before the next low pressure system moves in for the late
week and early weekend time-frame.


lhz361-362-160400-
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-
357 pm edt wed jul 15 2026

...dense smoke advisory in effect until 10 am edt thursday...

.tonight...northwest winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. smoke. waves 3 to 5 feet. 
.thursday...west winds 10 to 15 knots. smoke. waves 2 to 4 feet. 
.thursday night...west winds 10 to 15 knots becoming north 5 to
10 knots in the late evening and overnight. smoke in the
evening...then areas of smoke after midnight. waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight. 
.friday...east winds 5 to 10 knots. areas of smoke in the
morning. a chance of showers in the afternoon. waves 2 feet or
less. 
.friday night...southeast winds 5 to 10 knots. a chance of
showers in the evening...then showers after midnight. waves 1 to
3 feet. 
.saturday...southeast winds 10 to 15 knots becoming north 15 to
20 knots with gusts to around 30 knots late in the morning...then
decreasing to 10 to 15 knots late in the evening. showers in the
morning. rain showers likely late in the morning...then a chance
of showers and thunderstorms late in the afternoon. waves 3 to
5 feet building to 4 to 6 feet late in the afternoon. waves
occasionally around 8 feet. 
.sunday...north winds 10 to 15 knots becoming northwest 5 to
10 knots in the late morning and early afternoon...then becoming
light and variable early in the evening becoming southwest 5 to
10 knots by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet.
.monday...south winds 5 to 10 knots becoming southwest 15 to
20 knots with gusts to around 30 knots. a chance of showers until
afternoon...then showers likely . waves 1 to 3 feet building to
5 to 7 feet. waves occasionally around 10 feet. 


$$

fzus63 kdtx 151957
glflh 
expires:202607160400;;025756

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt wed jul 15 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 weak cold front continues southward across the 
central great lakes through tonight as canadian wildfire smoke
fills in behind the boundary. weak high pressure follows by 
thursday before the next low pressure system moves in for the late
week and early weekend time-frame.


lhz363-160400-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
357 pm edt wed jul 15 2026

...dense smoke advisory in effect until 10 am edt thursday...

.tonight...north winds 5 to 10 knots becoming northwest 10 to
15 knots in the late evening and overnight. smoke. waves 2 to
4 feet. 
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then becoming
light and variable late in the afternoon. smoke. waves 2 to
4 feet subsiding to 1 to 3 feet in the late morning and
afternoon. 
.thursday night...light and variable winds becoming north 5 to
10 knots in the late evening and overnight. areas of smoke. waves
1 to 3 feet. 
.friday...light and variable winds becoming east 5 to 10 knots
early in the afternoon. areas of smoke in the morning. waves
2 feet or less. 
.friday night...east winds 5 to 10 knots becoming southeast 10 to
15 knots in the late evening and overnight. showers likely and a
chance of thunderstorms in the evening...then showers likely
after midnight. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots becoming north 15 to
20 knots with gusts to around 30 knots late in the afternoon.
showers likely. a chance of thunderstorms late in the morning. a
chance of showers late in the afternoon. waves 2 to 4 feet
building to 4 to 6 feet late in the afternoon. waves occasionally
around 8 feet. 
.sunday...north winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and early afternoon...then becoming light and
variable early in the evening becoming southeast 5 to 10 knots by
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.monday...south winds 5 to 10 knots becoming southwest 15 to
20 knots with gusts to around 30 knots. showers likely . waves
2 feet or less building to 4 to 6 feet. waves occasionally around
8 feet. 


$$

fzus63 kdtx 151957
glflh 
expires:202607160400;;025757

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt wed jul 15 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 weak cold front continues southward across the 
central great lakes through tonight as canadian wildfire smoke
fills in behind the boundary. weak high pressure follows by 
thursday before the next low pressure system moves in for the late
week and early weekend time-frame.


lhz462>464-160400-
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-
357 pm edt wed jul 15 2026

...dense smoke advisory in effect until 10 am edt thursday...

.tonight...light and variable winds becoming northwest 5 to
10 knots in the late evening and overnight. areas of smoke in the
evening...then smoke after midnight. waves 2 feet or less
building to 2 to 4 feet after midnight. 
.thursday...northwest winds 10 to 15 knots becoming light and
variable. smoke. waves 1 to 3 feet. 
.thursday night...light and variable winds. areas of smoke in the
evening...then patchy smoke after midnight. waves 2 feet or less.
.friday...light and variable winds becoming east 5 to 10 knots
early in the afternoon. patchy smoke in the morning. waves 2 feet
or less. 
.friday night...east winds 5 to 10 knots becoming southeast 10 to
15 knots by midnight...then veering to the south after midnight.
a chance of showers and thunderstorms in the evening...then
showers likely after midnight. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots becoming west 15 to
20 knots late in the afternoon...then veering to the north late
in the evening. showers likely. a chance of thunderstorms late in
the morning. waves 1 to 3 feet building to 4 to 6 feet. waves
occasionally around 8 feet. 
.sunday...north winds 10 to 15 knots decreasing to 5 to 10 knots
early in the evening...then becoming light and variable by
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet by midnight.
.monday...south winds 5 to 10 knots becoming southwest 15 to
20 knots. showers likely and a chance of thunderstorms . waves
2 feet or less building to 3 to 5 feet . 


$$

fzus63 kmkx 151956
glflm 
expires:202607160315;;025734

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 pm cdt wed jul 15 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 gradually breaks down this evening as a weak area of 
low pressure around 29.9 inches works its way across lake superior 
and down lake michigan. this has brought a northeasterly wind shift 
across the lake and will continue thursday. additional seeing 
wildfire smoke from northern mn and northwestern ontario reducing 
visibility across the northern third of the open waters to 1 nm or 
less at times this afternoon and likely to continue into 
thursday. thus a marine dense smoke advisory has been issued. 
smoke is expected to continue to spread southward, but uncertain 
on how low visibilities will fall for the southern portions of 
lake michigan. will continue to monitor if an expansion of the 
advisory will be needed.

otherwise, lighter winds expected again on thursday as another high 
pressure around 30.1 inches briefly builds back into the region 
before influence from a low pressure around 29.7 inches developing 
over the northern plains pushes eastward through the weekend 
bringing more southwesterly flow for friday into saturday. then as 
the low tracking northeastward, it will drag a cold front across the 
lake resulting in northerly wind shift through the day saturday with 
another high pressure building over the region for sunday. 
additionally will see periodic shower and thunderstorm chances 
across the lake for the end of the week through the weekend. 


lmz261-362-364-563-160315-
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 rock island passage to sturgeon bay wi-
256 pm cdt wed jul 15 2026

sturgeon bay wi to point betsie mi north...

...dense smoke advisory in effect until 10 am cdt thursday...

.tonight...north winds 10 to 20 kt diminishing to 10 to 15 kt
late this evening, then becoming northwest after midnight
becoming northwest 5 to 10 kt late. smoke. waves 1 to 2 ft. 
.thursday...northwest winds 5 to 10 kt becoming west 10 to 20 kt.
smoke. waves 1 to 2 ft. 
.thursday night...north winds 10 to 15 kt becoming east 5 to
10 kt. smoke. waves 1 ft or less. 
.friday...east winds 10 to 15 kt. smoke in the morning. chance of
showers. waves 1 ft or less. 
.friday night...east winds 10 to 15 kt becoming south 10 to
20 kt. chance of showers and thunderstorms in the evening, then
showers with a chance of thunderstorms overnight. waves 1 to
3 ft. 
.saturday...west winds 15 to 25 kt becoming north. chance of
thunderstorms in the morning. waves 2 to 4 ft. 
.saturday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. waves 2 to 4 ft. 
.sunday...northeast winds 5 to 10 kt backing to southwest 10 to
20 kt. waves 1 to 2 ft. 
.monday...southwest winds to 30 kt increasing to gales to 35 kt.
chance of showers. waves 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 151956
glflm 
expires:202607160315;;025735

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 pm cdt wed jul 15 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 gradually breaks down this evening as a weak area of 
low pressure around 29.9 inches works its way across lake superior 
and down lake michigan. this has brought a northeasterly wind shift 
across the lake and will continue thursday. additional seeing 
wildfire smoke from northern mn and northwestern ontario reducing 
visibility across the northern third of the open waters to 1 nm or 
less at times this afternoon and likely to continue into 
thursday. thus a marine dense smoke advisory has been issued. 
smoke is expected to continue to spread southward, but uncertain 
on how low visibilities will fall for the southern portions of 
lake michigan. will continue to monitor if an expansion of the 
advisory will be needed.

otherwise, lighter winds expected again on thursday as another high 
pressure around 30.1 inches briefly builds back into the region 
before influence from a low pressure around 29.7 inches developing 
over the northern plains pushes eastward through the weekend 
bringing more southwesterly flow for friday into saturday. then as 
the low tracking northeastward, it will drag a cold front across the 
lake resulting in northerly wind shift through the day saturday with 
another high pressure building over the region for sunday. 
additionally will see periodic shower and thunderstorm chances 
across the lake for the end of the week through the weekend. 


lmz366-565-567-868-160315-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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-
256 pm cdt wed jul 15 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

.tonight...northeast winds 10 to 20 kt diminishing to 5 to 10 kt.
smoke. waves 1 to 3 ft. 
.thursday...northeast winds 5 to 10 kt increasing to 10 to 20 kt.
smoke. waves 1 to 2 ft. 
.thursday night...northeast winds 10 to 15 kt becoming east 5 to
10 kt. smoke. waves 1 to 2 ft. 
.friday...southeast winds 5 to 10 kt becoming northeast 10 to
15 kt. smoke in the morning. chance of showers in the morning.
waves 1 to 2 ft. 
.friday night...southeast winds 10 to 15 kt becoming southwest.
chance of showers overnight. waves 1 to 3 ft building to 2 to
4 ft. 
.saturday...southwest winds 10 to 20 kt veering to north to 30 kt
in the afternoon. chance of showers. waves 2 to 4 ft. 
.saturday night...north winds to 30 kt becoming northeast 10 to
20 kt. waves 3 to 5 ft. 
.sunday...northeast winds 10 to 15 kt backing to west 10 to
20 kt. waves 1 to 3 ft. 
.monday...southwest winds 15 to 25 kt increasing to 30 kt. chance
of showers. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft.  

$$

fzus63 kmkx 151956
glflm 
expires:202607160315;;025736

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 pm cdt wed jul 15 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 gradually breaks down this evening as a weak area of 
low pressure around 29.9 inches works its way across lake superior 
and down lake michigan. this has brought a northeasterly wind shift 
across the lake and will continue thursday. additional seeing 
wildfire smoke from northern mn and northwestern ontario reducing 
visibility across the northern third of the open waters to 1 nm or 
less at times this afternoon and likely to continue into 
thursday. thus a marine dense smoke advisory has been issued. 
smoke is expected to continue to spread southward, but uncertain 
on how low visibilities will fall for the southern portions of 
lake michigan. will continue to monitor if an expansion of the 
advisory will be needed.

otherwise, lighter winds expected again on thursday as another high 
pressure around 30.1 inches briefly builds back into the region 
before influence from a low pressure around 29.7 inches developing 
over the northern plains pushes eastward through the weekend 
bringing more southwesterly flow for friday into saturday. then as 
the low tracking northeastward, it will drag a cold front across the 
lake resulting in northerly wind shift through the day saturday with 
another high pressure building over the region for sunday. 
additionally will see periodic shower and thunderstorm chances 
across the lake for the end of the week through the weekend. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-160315-
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-
256 pm cdt wed jul 15 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 20 kt becoming northeast 5 to 10 kt.
areas of smoke. waves 1 to 3 ft. 
.thursday...east winds 5 to 10 kt becoming northeast 10 to 20 kt.
areas of smoke in the morning, then smoke in the afternoon. waves
1 to 2 ft. 
.thursday night...northeast winds 10 to 15 kt becoming east.
smoke in the evening, then patchy smoke overnight. waves 1 to
2 ft. 
.friday...southeast winds 5 to 10 kt increasing to 10 to 15 kt.
areas of smoke in the morning. waves 1 to 2 ft. 
.friday night...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...southwest winds 10 to 20 kt becoming west to 30 kt in
the afternoon. chance of showers and thunderstorms in the
afternoon. waves 3 to 5 ft. 
.saturday night...north winds to 30 kt becoming northeast 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.monday...southwest winds 15 to 25 kt increasing to 30 kt. chance
of showers and thunderstorms. waves 3 to 5 ft building to 4 to
6 ft occasionally to 8 ft.  

$$

fzus63 kmqt 152001
glfls 
expires:202607160800;;025916

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 15 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... 

30.1 inch ridging persists over lake superior through friday while 
gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
great lakes at around 29.7 inches friday night into saturday, 
although uncertainty remains high on track and strength. weak 29.9 
to 30.0 inch ridging returns to lake superior on sunday. 




lsz162-160800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed jul 15 2026 /301 pm cdt wed jul 15 2026/

...dense smoke advisory in effect until 11 am edt /10 am cdt/
thursday...

.late this afternoon...west winds 5 to 15 knots. smoke. waves
calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight. smoke. waves calm to 2 feet. 
.thursday...north winds less than 10 knots becoming northeast
5 to 15 knots in the afternoon, then increasing to 10 to 20 knots
late. smoke. a slight chance of showers. waves calm to 2 feet. 
.thursday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. smoke. a chance of showers and a
slight chance of thunderstorms after midnight. waves calm to
2 feet. 
.friday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. smoke through early afternoon. showers
likely through early afternoon. a chance of thunderstorms. a
chance of showers by mid afternoon. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots backing north after
midnight. a chance of thunderstorms through midnight. a chance of
showers. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots becoming southwest 10 to
20 knots. a chance of showers. waves calm to 2 feet. 
.monday...west winds 15 to 25 knots veering northwest. a chance
of showers. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 152001
glfls 
expires:202607160800;;025917

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 15 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... 

30.1 inch ridging persists over lake superior through friday while 
gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
great lakes at around 29.7 inches friday night into saturday, 
although uncertainty remains high on track and strength. weak 29.9 
to 30.0 inch ridging returns to lake superior on sunday. 




lsz263-160800-
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 wed jul 15 2026

...dense smoke advisory in effect until 11 am edt thursday...

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

$$

fzus63 kmqt 152001
glfls 
expires:202607160800;;025918

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 15 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... 

30.1 inch ridging persists over lake superior through friday while 
gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
great lakes at around 29.7 inches friday night into saturday, 
although uncertainty remains high on track and strength. weak 29.9 
to 30.0 inch ridging returns to lake superior on sunday. 




lsz264-160800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt wed jul 15 2026

...dense smoke advisory in effect until 11 am edt thursday...

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

$$

fzus63 kmqt 152001
glfls 
expires:202607160800;;025919

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 15 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... 

30.1 inch ridging persists over lake superior through friday while 
gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
great lakes at around 29.7 inches friday night into saturday, 
although uncertainty remains high on track and strength. weak 29.9 
to 30.0 inch ridging returns to lake superior on sunday. 




lsz265-160800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt wed jul 15 2026

...dense smoke advisory in effect until 11 am edt thursday...

.late this afternoon...west winds 5 to 15 knots. smoke. waves
calm to 2 feet. 
.tonight...west winds 10 to 20 knots. smoke. waves calm to
2 feet. 
.thursday...northwest winds 5 to 15 knots veering north in the
afternoon, then veering east late. smoke. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots increasing to
10 to 20 knots late. smoke. a chance of showers after midnight.
waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. smoke through early afternoon. showers
and a slight chance of thunderstorms. waves building to 1 to
3 feet. 
.friday night...southeast winds 15 to 25 knots veering northwest
after midnight. showers through midnight. a chance of
thunderstorms. a chance of showers after midnight. waves 1 to
3 feet. 
.saturday...northwest winds 15 to 25 knots. waves building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.saturday night...northwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet. 
.monday...northwest winds 20 to 30 knots increasing to gales to
35 knots. a chance of showers. waves building to 5 to 8 feet
occasionally to 10 feet. 

$$

fzus63 kmqt 152001
glfls 
expires:202607160800;;025920

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 15 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... 

30.1 inch ridging persists over lake superior through friday while 
gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
great lakes at around 29.7 inches friday night into saturday, 
although uncertainty remains high on track and strength. weak 29.9 
to 30.0 inch ridging returns to lake superior on sunday. 




lsz266-160800-
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 wed jul 15 2026

...dense smoke advisory in effect until 11 am edt thursday...

.late this afternoon...west winds 10 to 20 knots. smoke. waves
1 to 3 feet. 
.tonight...west winds 10 to 20 knots. smoke. waves subsiding to
calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots veering north in the
afternoon, then backing northwest late. smoke. waves calm to
2 feet. 
.thursday night...west winds 5 to 15 knots backing southeast
after midnight. smoke. a slight chance of showers after midnight.
waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. smoke through early afternoon. showers
likely and a slight chance of thunderstorms. waves building to
1 to 3 feet. 
.friday night...southeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. showers and a chance of
thunderstorms. waves 1 to 3 feet. 
.saturday...north winds 15 to 25 knots backing northwest by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.saturday night...northwest winds 5 to 15 knots veering north
after midnight. waves subsiding to calm to 2 feet. 
.sunday...south winds 5 to 15 knots increasing to 15 to 25 knots.
a chance of showers. waves building to 2 to 4 feet. 
.monday...west winds 15 to 25 knots becoming northwest gales to
35 knots. a chance of showers. waves building to 5 to 8 feet
occasionally to 10 feet. 

$$

fzus63 kmqt 152001
glfls 
expires:202607160800;;025921

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 15 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... 

30.1 inch ridging persists over lake superior through friday while 
gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
great lakes at around 29.7 inches friday night into saturday, 
although uncertainty remains high on track and strength. weak 29.9 
to 30.0 inch ridging returns to lake superior on sunday. 




lsz267-160800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt wed jul 15 2026

...dense smoke advisory in effect until 11 am edt thursday...

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

$$