fzus63 kdtx 151943
glflh 
expires:202606160345;;803279

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 pm edt mon jun 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...southwest to south winds peaking out around 20 knots
today and tonight with dry weather. the arrival of a low pressure
system and it's attendant cold front lead to showers and
thunderstorms beginning tuesday afternoon for the central
waterways. a brief break in activity ensues wednesday, followed
by a secondary stronger system wednesday night into thursday.
more intense convection is possible with the wednesday night
system.


lhz361-160345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
343 pm edt mon jun 15 2026

.tonight...south winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots backing to the southeast in
the afternoon. showers likely and a chance of thunderstorms in
the afternoon. waves 1 to 3 feet. 
.tuesday night...southeast winds 5 to 10 knots. a chance of
showers in the evening. waves 1 to 3 feet. 
.wednesday...southwest winds 5 to 10 knots veering to the west in
the late morning and early afternoon...then backing to the south
early in the afternoon. a chance of showers in the afternoon.
waves 2 feet or less. 
.wednesday night...southeast winds 5 to 10 knots becoming east
15 to 20 knots by midnight...then increasing to 20 to 25 knots
with gusts to around 30 knots after midnight. showers. waves
2 feet or less building to 3 to 5 feet in the late evening and
overnight. 
.thursday...northeast winds 15 to 20 knots backing to the
northwest late in the morning...then becoming west 20 to 25 knots
late in the afternoon decreasing to 15 to 20 knots late in the
evening. showers in the morning...then a chance of showers late
in the morning. waves 5 to 7 feet. waves occasionally around
10 feet. 
.friday...west winds 15 to 20 knots. waves 3 to 5 feet. 
.saturday...west winds 15 to 20 knots becoming northwest 10 to
15 knots by midnight. waves 3 to 5 feet. 


$$

fzus63 kdtx 151943
glflh 
expires:202606160345;;803280

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 pm edt mon jun 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...southwest to south winds peaking out around 20 knots
today and tonight with dry weather. the arrival of a low pressure
system and it's attendant cold front lead to showers and
thunderstorms beginning tuesday afternoon for the central
waterways. a brief break in activity ensues wednesday, followed
by a secondary stronger system wednesday night into thursday.
more intense convection is possible with the wednesday night
system.


lhz362-363-160345-
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-
343 pm edt mon jun 15 2026

.tonight...south winds 10 to 15 knots decreasing to 5 to 10 knots
by midnight...then increasing to 10 to 15 knots early in the
morning. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots. a chance of showers in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet in the
afternoon. 
.tuesday night...south winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. a chance of showers. waves 2 to 4 feet. 
.wednesday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the afternoon. waves 1 to 3 feet. 
.wednesday night...southeast winds 10 to 15 knots increasing to
15 to 20 knots with gusts to around 30 knots by midnight...then
becoming east 20 to 25 knots with gusts to around 30 knots after
midnight. showers. waves 1 to 3 feet building to 6 to 9 feet.
waves occasionally around 12 feet. 
.thursday...northeast winds 15 to 20 knots with gusts to around
30 knots backing to the west with gusts to around 30 knots.
showers in the morning...then a chance of showers late in the
morning. waves 6 to 9 feet. waves occasionally around 12 feet. 
.friday...west winds 10 to 15 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.saturday...west winds 15 to 20 knots decreasing to 10 to
15 knots. waves 3 to 5 feet. 


$$

fzus63 kdtx 151943
glflh 
expires:202606160345;;803281

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 pm edt mon jun 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...southwest to south winds peaking out around 20 knots
today and tonight with dry weather. the arrival of a low pressure
system and it's attendant cold front lead to showers and
thunderstorms beginning tuesday afternoon for the central
waterways. a brief break in activity ensues wednesday, followed
by a secondary stronger system wednesday night into thursday.
more intense convection is possible with the wednesday night
system.


lhz462>464-160345-
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-
343 pm edt mon jun 15 2026

.tonight...south winds 5 to 10 knots becoming southwest 10 to
15 knots after midnight...then decreasing to 5 to 10 knots early
in the morning. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots. a chance of showers and
thunderstorms in the afternoon. waves 1 to 3 feet building to
2 to 4 feet late in the afternoon. 
.tuesday night...south winds 10 to 15 knots. showers likely and a
chance of thunderstorms in the evening...then a chance of showers
after midnight. waves 2 to 4 feet. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
in the afternoon. waves 1 to 3 feet. 
.wednesday night...south winds 10 to 15 knots becoming southeast
20 to 25 knots with gusts to 35 knot gales in the late evening
and overnight. showers. waves 1 to 3 feet building to 5 to 7 feet
in the late evening and overnight. waves occasionally around
10 feet. 
.thursday...south winds 20 to 25 knots with gusts to around
30 knots veering to the west with gusts to around 30 knots late
in the morning...then decreasing to 15 to 20 knots with gusts to
around 30 knots late in the afternoon. a chance of showers. waves
5 to 7 feet. waves occasionally around 10 feet. 
.friday...west winds 10 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.saturday...west winds 10 to 15 knots decreasing to 5 to 10 knots
. waves 2 to 4 feet subsiding to 1 to 3 feet . 


$$

fzus63 kmkx 152021
glflm 
expires:202606160315;;805014

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
321 pm cdt mon jun 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...

southwesterly winds shift southerly into early tuesday as a low
pressure system deepens over northern lake michigan (29.65
inches), shifting eastward over the northern half of the lake
wednesday morning, with winds becoming northwesterly wednesday.
scattered showers and storms over central and southern lake 
michigan tuesday night through wednesday.

following the chance for precipitation, a low pressure system will
move over lake michigan thursday morning (29.47 inches), causing a
wind shift from southeasterly wednesday night to northwesterly
thursday morning, with the potential for breezy conditions. 

a high pressure system will move in friday, creating continued
breezy, westerly winds, primarily over the southern half of lake
michigan.



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-
321 pm cdt mon jun 15 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.tuesday...southwest winds 15 to 25 kt increasing to 30 kt.
chance of showers and slight chance of thunderstorms. waves 4 to
6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to
9 ft. 
.tuesday night...west winds 15 to 25 kt diminishing to 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.wednesday...south winds 10 to 20 kt becoming southeast gales to
35 kt in the afternoon. chance of showers in the morning, then
showers in the afternoon. waves 1 to 3 ft building to 4 to 7 ft
occasionally to 9 ft. 
.wednesday night...south winds to 30 kt veering to west. showers
with a chance of thunderstorms in the evening, then chance of
showers overnight. waves 5 to 8 ft occasionally to 10 ft. 
.thursday...west winds to 30 kt becoming northwest 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft. 
.thursday night...west winds 10 to 20 kt. waves 2 to 4 ft. 
.friday...west winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday...west winds 10 to 20 kt becoming southwest. waves 2 to
4 ft.  

$$

fzus63 kmkx 152021
glflm 
expires:202606160315;;805013

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
321 pm cdt mon jun 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...

southwesterly winds shift southerly into early tuesday as a low
pressure system deepens over northern lake michigan (29.65
inches), shifting eastward over the northern half of the lake
wednesday morning, with winds becoming northwesterly wednesday.
scattered showers and storms over central and southern lake 
michigan tuesday night through wednesday.

following the chance for precipitation, a low pressure system will
move over lake michigan thursday morning (29.47 inches), causing a
wind shift from southeasterly wednesday night to northwesterly
thursday morning, with the potential for breezy conditions. 

a high pressure system will move in friday, creating continued
breezy, westerly winds, primarily over the southern half of lake
michigan.



lmz261-362-364-366-563-565-567-868-160315-
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 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-
321 pm cdt mon jun 15 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 2 to 4 ft. 
.tuesday...south winds 10 to 20 kt increasing to 30 kt, then
becoming southwest 15 to 25 kt late. slight chance of showers in
the morning, then chance of showers and slight chance of
thunderstorms in the afternoon. waves 3 to 5 ft building to 4 to
6 ft occasionally to 8 ft. 
.tuesday night...west winds 10 to 20 kt diminishing to 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.wednesday...southwest winds 10 to 20 kt becoming south 15 to
25 kt. showers in the afternoon. waves 1 to 3 ft building to 4 to
6 ft occasionally to 8 ft. 
.wednesday night...east winds to 30 kt becoming northeast 15 to
25 kt. showers. waves 4 to 7 ft occasionally to 9 ft. 
.thursday...northwest winds 15 to 25 kt becoming west 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.thursday night...west winds 15 to 25 kt diminishing to 10 to
20 kt. waves 2 to 4 ft. 
.friday...northwest winds 15 to 25 kt becoming west. waves 2 to
4 ft. 
.saturday...west winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 152001
glfls 
expires:202606160800;;803713

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jun 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... 

a 29.5 inch low over northern ontario this afternoon brings 29.7 
inch troughing over lake superior, with the troughing deepening to 
29.6 inches by this evening as the parent low continues towards 
james bay. the troughing deepens into a 29.5 inch low over northeast 
wisconsin and the u.p. on tuesday before slowly moving east-
northeast into ontario tuesday night into early wednesday morning. a 
low of 29.2 inches over the northern plains on wednesday morning 
then moves through lower michigan wednesday night before arriving 
into southern ontario early thursday morning. a 30.0 inch high then 
develops over the plains thursday night before diving into the mid-
mississippi valley friday night; this brings 29.9 inch ridging over 
lake superior by friday. the ridging strengthen slightly to around 
30.0 inches over lake superior by saturday as the parent high 
meanders into the ohio river valley. 




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 mon jun 15 2026

.late this afternoon...southwest winds 15 to 25 knots. a chance
of showers and a slight chance of thunderstorms. waves 3 to
5 feet occasionally to 7 feet. 
.tonight...southwest winds 5 to 15 knots veering west after
midnight, then veering north late. a slight chance of rain
showers through midnight. waves subsiding to calm to 2 feet. 
.tuesday...north winds 5 to 15 knots backing west late. a slight
chance of rain showers through early afternoon. waves calm to
2 feet. 
.tuesday night...west winds less than 10 knots backing southwest
late. waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots backing east by mid
afternoon. a slight chance of rain showers by mid afternoon.
waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots backing north after
midnight. a chance of rain showers. waves calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves building to 1 to 3 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves 1 to 3 feet. 
.friday...west winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 152001
glfls 
expires:202606160800;;803714

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jun 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... 

a 29.5 inch low over northern ontario this afternoon brings 29.7 
inch troughing over lake superior, with the troughing deepening to 
29.6 inches by this evening as the parent low continues towards 
james bay. the troughing deepens into a 29.5 inch low over northeast 
wisconsin and the u.p. on tuesday before slowly moving east-
northeast into ontario tuesday night into early wednesday morning. a 
low of 29.2 inches over the northern plains on wednesday morning 
then moves through lower michigan wednesday night before arriving 
into southern ontario early thursday morning. a 30.0 inch high then 
develops over the plains thursday night before diving into the mid-
mississippi valley friday night; this brings 29.9 inch ridging over 
lake superior by friday. the ridging strengthen slightly to around 
30.0 inches over lake superior by saturday as the parent high 
meanders into the ohio river valley. 




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

.late this afternoon...south winds 10 to 20 knots. a slight
chance of showers and thunderstorms. waves 1 to 3 feet subsiding
to calm to 2 feet. 
.tonight...south winds 10 to 20 knots veering southwest after
midnight, then becoming west 5 to 15 knots late. a slight chance
of showers and thunderstorms through midnight. waves calm to
2 feet. 
.tuesday...north winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then diminishing to 5 to 15 knots late. a
slight chance of showers. a slight chance of thunderstorms by mid
afternoon. waves calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots backing southwest late.
waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots becoming east 15 to
25 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 1 to 3 feet. 
.wednesday night...east winds 15 to 25 knots backing north after
midnight. showers likely through midnight, then a chance of
showers after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday...northwest winds 20 to 30 knots backing west by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 
.thursday night...west winds 15 to 25 knots. waves subsiding to
1 to 3 feet, then building to 2 to 4 feet. 
.friday...west winds 20 to 30 knots diminishing to 15 to
25 knots. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots backing west. waves
calm to 2 feet. 

$$

fzus63 kmqt 152001
glfls 
expires:202606160800;;803715

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jun 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... 

a 29.5 inch low over northern ontario this afternoon brings 29.7 
inch troughing over lake superior, with the troughing deepening to 
29.6 inches by this evening as the parent low continues towards 
james bay. the troughing deepens into a 29.5 inch low over northeast 
wisconsin and the u.p. on tuesday before slowly moving east-
northeast into ontario tuesday night into early wednesday morning. a 
low of 29.2 inches over the northern plains on wednesday morning 
then moves through lower michigan wednesday night before arriving 
into southern ontario early thursday morning. a 30.0 inch high then 
develops over the plains thursday night before diving into the mid-
mississippi valley friday night; this brings 29.9 inch ridging over 
lake superior by friday. the ridging strengthen slightly to around 
30.0 inches over lake superior by saturday as the parent high 
meanders into the ohio river valley. 




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 mon jun 15 2026

.late this afternoon...south winds 10 to 20 knots. a slight
chance of showers and thunderstorms. waves 3 to 5 feet
occasionally to 7 feet subsiding to 2 to 4 feet. 
.tonight...south winds 10 to 20 knots veering southwest after
midnight, then diminishing to 5 to 15 knots late. a slight chance
of thunderstorms through midnight. a slight chance of rain
showers. waves subsiding to calm to 2 feet. 
.tuesday...north winds 5 to 15 knots. a slight chance of rain
showers. a slight chance of thunderstorms by mid afternoon. waves
calm to 2 feet. 
.tuesday night...northwest winds 5 to 15 knots backing west late.
a slight chance of rain showers. waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots backing east by mid
afternoon. a chance of rain showers by mid afternoon. waves calm
to 2 feet. 
.wednesday night...east winds 10 to 20 knots becoming north 15 to
25 knots after midnight. rain showers likely through midnight,
then a chance of rain showers after midnight. waves building to
3 to 5 feet occasionally to 7 feet. 
.thursday...northwest gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.thursday night...west winds 15 to 25 knots veering northwest
after midnight. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.friday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.saturday...northwest winds 10 to 20 knots backing west. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 152001
glfls 
expires:202606160800;;803716

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jun 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... 

a 29.5 inch low over northern ontario this afternoon brings 29.7 
inch troughing over lake superior, with the troughing deepening to 
29.6 inches by this evening as the parent low continues towards 
james bay. the troughing deepens into a 29.5 inch low over northeast 
wisconsin and the u.p. on tuesday before slowly moving east-
northeast into ontario tuesday night into early wednesday morning. a 
low of 29.2 inches over the northern plains on wednesday morning 
then moves through lower michigan wednesday night before arriving 
into southern ontario early thursday morning. a 30.0 inch high then 
develops over the plains thursday night before diving into the mid-
mississippi valley friday night; this brings 29.9 inch ridging over 
lake superior by friday. the ridging strengthen slightly to around 
30.0 inches over lake superior by saturday as the parent high 
meanders into the ohio river valley. 




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

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

$$

fzus63 kmqt 152001
glfls 
expires:202606160800;;803711

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jun 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... 

a 29.5 inch low over northern ontario this afternoon brings 29.7 
inch troughing over lake superior, with the troughing deepening to 
29.6 inches by this evening as the parent low continues towards 
james bay. the troughing deepens into a 29.5 inch low over northeast 
wisconsin and the u.p. on tuesday before slowly moving east-
northeast into ontario tuesday night into early wednesday morning. a 
low of 29.2 inches over the northern plains on wednesday morning 
then moves through lower michigan wednesday night before arriving 
into southern ontario early thursday morning. a 30.0 inch high then 
develops over the plains thursday night before diving into the mid-
mississippi valley friday night; this brings 29.9 inch ridging over 
lake superior by friday. the ridging strengthen slightly to around 
30.0 inches over lake superior by saturday as the parent high 
meanders into the ohio river valley. 




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

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

$$

fzus63 kmqt 152001
glfls 
expires:202606160800;;803712

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jun 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... 

a 29.5 inch low over northern ontario this afternoon brings 29.7 
inch troughing over lake superior, with the troughing deepening to 
29.6 inches by this evening as the parent low continues towards 
james bay. the troughing deepens into a 29.5 inch low over northeast 
wisconsin and the u.p. on tuesday before slowly moving east-
northeast into ontario tuesday night into early wednesday morning. a 
low of 29.2 inches over the northern plains on wednesday morning 
then moves through lower michigan wednesday night before arriving 
into southern ontario early thursday morning. a 30.0 inch high then 
develops over the plains thursday night before diving into the mid-
mississippi valley friday night; this brings 29.9 inch ridging over 
lake superior by friday. the ridging strengthen slightly to around 
30.0 inches over lake superior by saturday as the parent high 
meanders into the ohio river valley. 




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 mon jun 15 2026

.late this afternoon...southwest winds 15 to 25 knots. a chance
of showers and a slight chance of thunderstorms. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.tonight...southwest winds 5 to 15 knots veering north late. a
slight chance of thunderstorms through midnight. a chance of rain
showers. waves subsiding to calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering southwest late.
a slight chance of rain showers through early afternoon. waves
calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots diminishing to
less than 10 knots after midnight, then backing south late. waves
calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. a slight chance of rain showers
through early afternoon. rain showers likely by mid afternoon.
waves calm to 2 feet. 
.wednesday night...northeast winds 10 to 20 knots backing north
after midnight. a chance of rain showers. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.thursday...west winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves 1 to 3 feet. 
.friday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 
.saturday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$