fzus61 kbuf 291402
glflo 
expires:202606292100;;109698

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon jun 29 2026

for waters beyond five nautical miles of shore on lake ontario

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 draped from quebec to eastern new york 
will slide east into new england today, then offshore by tuesday. a 
warm front will cross the lake on tuesday, then another broad 30.1 
inch high will build into the ohio valley and mid atlantic by 
wednesday, where it will remain through at least thursday. a weak 
29.9 inch trough will then approach the lake friday.


loz063>065-292100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt mon jun 29 2026

.this afternoon...east winds less than 10 knots becoming
northeast. waves 1 foot or less. 
.tonight...northeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.tuesday...south winds 10 knots or less becoming southwest. a
chance of showers and thunderstorms. waves 1 foot or less. 
.tuesday night...south winds 5 to 10 knots becoming southwest. a
chance of showers. waves 2 feet or less. 
.wednesday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of showers thursday night. waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots. a chance of showers during
the day, then a chance of showers and thunderstorms friday night.
waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 291402
glflo 
expires:202606292100;;109697

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon jun 29 2026

for waters beyond five nautical miles of shore on lake ontario

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 draped from quebec to eastern new york 
will slide east into new england today, then offshore by tuesday. a 
warm front will cross the lake on tuesday, then another broad 30.1 
inch high will build into the ohio valley and mid atlantic by 
wednesday, where it will remain through at least thursday. a weak 
29.9 inch trough will then approach the lake friday.


loz062-292100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt mon jun 29 2026

.this afternoon...east winds 5 to 10 knots. waves 1 foot or less. 
.tonight...east winds 10 knots or less becoming south. a chance
of showers and thunderstorms late. waves 1 foot or less. 
.tuesday...southwest winds 10 knots or less increasing to 10 to
15 knots. a chance of showers and thunderstorms in the morning,
then a chance of showers in the afternoon. waves 1 to 3 feet. 
.tuesday night...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.wednesday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.friday...southwest winds 5 to 10 knots becoming west. a chance
of showers and thunderstorms. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 291405
glfle 
expires:202606292015;;109847

open lake forecast for lake erie
national weather service cleveland oh
1005 am edt mon jun 29 2026

for waters beyond five nautical miles of shore on lake erie

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 30.10 over lake ontario will slowly move east today
and allow a warm front to cross lake erie tonight. a ridge
averaging 30.00 inches will build from the south behind the front
on tuesday and remain through much of the week.


lez162-163-292015-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
1005 am edt mon jun 29 2026

.this afternoon...east winds 10 knots or less. waves 1 foot or 
less. 
.tonight...east winds around 10 knots becoming southwest. waves
1 foot or less. 
.tuesday...southwest winds 10 to 15 knots. waves 2 feet or less. 
.tuesday night...southwest winds 10 to 15 knots. waves 1 to
2 feet. 
.wednesday...southwest winds 5 to 10 knots. waves 1 to 2 feet. 
.thursday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.friday...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 291405
glfle 
expires:202606292015;;109849

open lake forecast for lake erie
national weather service cleveland oh
1005 am edt mon jun 29 2026

for waters beyond five nautical miles of shore on lake erie

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 30.10 over lake ontario will slowly move east today
and allow a warm front to cross lake erie tonight. a ridge
averaging 30.00 inches will build from the south behind the front
on tuesday and remain through much of the week.


lez061-169-292015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
1005 am edt mon jun 29 2026

.this afternoon...east winds 10 knots or less. waves 1 foot or 
less. 
.tonight...northeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.tuesday...south winds 5 to 10 knots becoming southwest. a chance
of showers in the morning. waves 2 feet or less. 
.tuesday night...southwest winds 5 to 15 knots. waves 1 to
3 feet. 
.wednesday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 10 knots. waves 1 to 2 feet. 
.friday...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms friday night. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 291405
glfle 
expires:202606292015;;109848

open lake forecast for lake erie
national weather service cleveland oh
1005 am edt mon jun 29 2026

for waters beyond five nautical miles of shore on lake erie

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 30.10 over lake ontario will slowly move east today
and allow a warm front to cross lake erie tonight. a ridge
averaging 30.00 inches will build from the south behind the front
on tuesday and remain through much of the week.


lez164>168-292015-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
1005 am edt mon jun 29 2026

.this afternoon...east winds 10 knots or less. waves 1 foot or
less. 
.tonight...east winds 5 to 10 knots becoming south. a slight
chance of showers and thunderstorms late. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots becoming southwest. waves
1 to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots. waves 1 to
3 feet. 
.wednesday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms friday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 291321
glfsc 
expires:202606292130;;108643

lake st clair forecast
national weather service detroit/pontiac mi
921 am edt mon jun 29 2026

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...low pressure over the northern plains, 29.40 inches,
will lift north today and will drive a warm front northward
across the great lakes region. the great lakes region will then
reside between weak low pressure across northern ontario and high
pressure across the eastern seaboard through the end of the week.
this will sustain south-southwest winds with ample humidity.
thunderstorm chances will largely be confined to northern lake
huron through wednesday.


lcz460-292130-
lake st clair-
921 am edt mon jun 29 2026

.rest of today...southeast winds 5 to 10 knots. partly sunny. waves
2 feet or less.
.tonight...south winds 5 to 10 knots. mostly clear. waves 2 feet or
less.
.tuesday...southwest winds 5 to 10 knots increasing to 10 to 15
knots in the late morning and afternoon. mostly sunny. waves 2 feet
or less.
.tuesday night...southwest winds 10 to 15 knots diminishing to 5 to
10 knots after midnight. mostly clear. waves 2 feet or less.
.wednesday...southwest winds 10 to 15 knots. clear. waves 2 feet or
less.
.thursday...southwest winds 10 to 15 knots. clear. waves 2 feet or
less.
.friday...southwest winds 5 to 10 knots. partly cloudy. a chance of
showers and thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 291320
glflh 
expires:202606292130;;108639

open lake forecast for lake huron
national weather service detroit/pontiac mi
920 am edt mon jun 29 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...low pressure over the northern plains, 29.40 inches,
will lift north today and will drive a warm front northward
across the great lakes region. the great lakes region will then
reside between weak low pressure across northern ontario and high
pressure across the eastern seaboard through the end of the week.
this will sustain south-southwest winds with ample humidity.
thunderstorm chances will largely be confined to northern lake
huron through wednesday.


lhz363-462>464-292130-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
920 am edt mon jun 29 2026

.rest of today...southeast winds 5 to 10 knots. waves 1 to
3 feet. 
.tonight...southeast winds 10 to 15 knots veering to the south
early in the morning. waves 2 to 4 feet. 
.tuesday...south winds 10 to 15 knots. waves 2 to 4 feet. 
.tuesday night...south winds 10 to 15 knots becoming southwest
5 to 10 knots by midnight...then increasing to 10 to 15 knots
after midnight. waves 2 to 4 feet. 
.wednesday...southwest winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday...southwest winds 10 to 15 knots becoming west 5 to
10 knots by midnight. a chance of showers . waves 1 to 3 feet
building to 2 to 4 feet. 
.friday...west winds 5 to 10 knots early in the morning becoming
light and variable...then becoming north 5 to 10 knots by
midnight. a chance of showers and thunderstorms...then a chance
of showers by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 291320
glflh 
expires:202606292130;;108638

open lake forecast for lake huron
national weather service detroit/pontiac mi
920 am edt mon jun 29 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...low pressure over the northern plains, 29.40 inches,
will lift north today and will drive a warm front northward
across the great lakes region. the great lakes region will then
reside between weak low pressure across northern ontario and high
pressure across the eastern seaboard through the end of the week.
this will sustain south-southwest winds with ample humidity.
thunderstorm chances will largely be confined to northern lake
huron through wednesday.


lhz361-362-292130-
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-
920 am edt mon jun 29 2026

.rest of today...east winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. scattered showers late in the
morning. waves 1 to 3 feet building to 2 to 4 feet in the
afternoon. 
.tonight...southeast winds 10 to 15 knots veering to the south
early in the morning. waves 3 to 5 feet. 
.tuesday...south winds 10 to 15 knots decreasing to 5 to 10 knots
early in the afternoon. areas of fog. waves 2 to 4 feet. 
.tuesday night...northeast winds 5 to 10 knots veering to the
southeast after midnight. scattered showers. areas of fog. waves
2 to 4 feet. 
.wednesday...southwest winds 5 to 10 knots backing to the south
late in the afternoon...then veering to the southwest late in the
evening. scattered showers. a chance of showers late in the
evening. waves 2 to 4 feet. 
.thursday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots. a chance of showers. waves 2 to 4 feet. 
.friday...light and variable winds becoming southwest 5 to
10 knots by midnight. a chance of showers . waves 2 feet or less.


$$

fzus63 kmkx 291356
glflm 
expires:202606292115;;109468

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
856 am cdt mon jun 29 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...

low pressure around 29.2 inches will move northeast to eastern 
north dakota this afternoon. an associated warm front will move 
north across the lake through today as the low moves northward. 
southeasterly winds will linger through the majority of today,
increasing through this morning. winds become south-southwesterly
tonight, remaining breezy through wednesday. winds become modest
and southwesterly thursday into friday. areas of dense fog may 
develop at times this week due to a very humid airmass flowing 
over the cooler waters of the lake. scattered thunderstorms are 
forecast on most days, especially over the north half.


lmz080-669-671-673-675-777-779-870-872-874-876-878-292115-
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-
856 am cdt mon jun 29 2026

sheboygan wi to pentwater mi south...

.rest of today...southeast winds to 30 kt becoming south. waves
4 to 7 ft occasionally to 9 ft. 
.tonight...south winds to 30 kt diminishing to 15 to 25 kt. waves
4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.tuesday...south winds 10 to 20 kt increasing to 15 to 25 kt.
patchy fog in the morning. waves 4 to 6 ft occasionally to 8 ft. 
.tuesday night...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...southwest winds 10 to 20 kt becoming south 15 to
25 kt. waves 3 to 5 ft. 
.wednesday night...southwest winds 15 to 25 kt diminishing to
10 to 20 kt. waves 3 to 5 ft. 
.thursday...southwest winds 15 to 25 kt becoming south. waves
3 to 5 ft. 
.friday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
chance of showers. waves 1 to 3 ft.  

$$

fzus63 kmkx 291356
glflm 
expires:202606292115;;109467

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
856 am cdt mon jun 29 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...

low pressure around 29.2 inches will move northeast to eastern 
north dakota this afternoon. an associated warm front will move 
north across the lake through today as the low moves northward. 
southeasterly winds will linger through the majority of today,
increasing through this morning. winds become south-southwesterly
tonight, remaining breezy through wednesday. winds become modest
and southwesterly thursday into friday. areas of dense fog may 
develop at times this week due to a very humid airmass flowing 
over the cooler waters of the lake. scattered thunderstorms are 
forecast on most days, especially over the north half.


lmz261-362-364-366-563-565-567-868-292115-
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-
856 am cdt mon jun 29 2026

sheboygan wi to pentwater mi north...

.rest of today...southeast winds to 30 kt becoming south. chance
of showers and slight chance of thunderstorms through mid
morning. waves 4 to 7 ft occasionally to 9 ft. 
.tonight...south winds to 30 kt diminishing to 15 to 25 kt. waves
4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.tuesday...southwest winds 15 to 25 kt becoming south. patchy fog
in the morning. waves 4 to 6 ft occasionally to 8 ft. 
.tuesday night...south winds to 30 kt becoming southwest 15 to
25 kt. chance of showers and thunderstorms in the evening, then
chance of showers overnight. waves 4 to 6 ft occasionally to
8 ft. 
.wednesday...southwest winds 10 to 20 kt becoming south to 30 kt
in the afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday night...southwest winds to 30 kt diminishing to 15 to
25 kt. chance of showers and thunderstorms. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday...southwest winds to 30 kt. waves 3 to 5 ft. 
.friday...south winds 10 to 15 kt increasing to 10 to 20 kt.
chance of showers. waves 1 to 3 ft.  

$$

fzus63 kmqt 291401
glfls 
expires:202606292000;;109612

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jun 29 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 29.4 low will track north, and then northwest, from the central 
plains to southern saskatchewan through tonight, deepening to 29.2 
inches. meanwhile a 30.1 inch high over the hudson bay will weaken 
and shift southeast to the east of lake erie as the saskatchewan low 
regresses southwest at 29.5 inches to montana while another low at 
29.4 inches moves from colorado to the northern plains. the 2nd low 
moves to southern manitoba tonight into tomorrow morning as high 
pressure shifts off the east coast, still at 30.1 inches. tomorrow, 
the low shifts north to lake winnipeg and deepens to 29.2 inches. 
the low then weakens to 29.4 inches as it crosses northern ontario 
by midday wednesday. as the low shifts east through thursday, weak 
high pressure around 30.0 inches expands over much of the eastern 
conus into the weekend.




lsz264-292000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt mon jun 29 2026

.rest of today...southeast winds 10 to 20 knots. patchy fog. a
chance of showers and a slight chance of thunderstorms. waves
2 to 4 feet building to 3 to 5 feet occasionally to 7 feet. 
.tonight...southeast winds 10 to 20 knots veering south late.
patchy fog. a chance of showers and thunderstorms. waves building
to 3 to 6 feet occasionally to 8 feet. 
.tuesday...southwest winds 5 to 15 knots becoming south 10 to
20 knots late. areas of dense fog through early afternoon. a
slight chance of showers and thunderstorms by mid afternoon.
waves subsiding to 1 to 3 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
after midnight. a slight chance of showers and thunderstorms
through midnight. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of showers
and a slight chance of thunderstorms by mid afternoon. waves 1 to
3 feet. 
.wednesday night...southwest winds 5 to 15 knots. showers likely
through midnight. a chance of thunderstorms. a chance of showers
after midnight. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...east winds less than 10 knots veering west. a chance of
showers. waves calm to 2 feet. 

$$

fzus63 kmqt 291401
glfls 
expires:202606292000;;109615

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jun 29 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 29.4 low will track north, and then northwest, from the central 
plains to southern saskatchewan through tonight, deepening to 29.2 
inches. meanwhile a 30.1 inch high over the hudson bay will weaken 
and shift southeast to the east of lake erie as the saskatchewan low 
regresses southwest at 29.5 inches to montana while another low at 
29.4 inches moves from colorado to the northern plains. the 2nd low 
moves to southern manitoba tonight into tomorrow morning as high 
pressure shifts off the east coast, still at 30.1 inches. tomorrow, 
the low shifts north to lake winnipeg and deepens to 29.2 inches. 
the low then weakens to 29.4 inches as it crosses northern ontario 
by midday wednesday. as the low shifts east through thursday, weak 
high pressure around 30.0 inches expands over much of the eastern 
conus into the weekend.




lsz267-292000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt mon jun 29 2026

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

$$

fzus63 kmqt 291401
glfls 
expires:202606292000;;109613

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jun 29 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 29.4 low will track north, and then northwest, from the central 
plains to southern saskatchewan through tonight, deepening to 29.2 
inches. meanwhile a 30.1 inch high over the hudson bay will weaken 
and shift southeast to the east of lake erie as the saskatchewan low 
regresses southwest at 29.5 inches to montana while another low at 
29.4 inches moves from colorado to the northern plains. the 2nd low 
moves to southern manitoba tonight into tomorrow morning as high 
pressure shifts off the east coast, still at 30.1 inches. tomorrow, 
the low shifts north to lake winnipeg and deepens to 29.2 inches. 
the low then weakens to 29.4 inches as it crosses northern ontario 
by midday wednesday. as the low shifts east through thursday, weak 
high pressure around 30.0 inches expands over much of the eastern 
conus into the weekend.




lsz265-292000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt mon jun 29 2026

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

$$

fzus63 kmqt 291401
glfls 
expires:202606292000;;109614

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jun 29 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 29.4 low will track north, and then northwest, from the central 
plains to southern saskatchewan through tonight, deepening to 29.2 
inches. meanwhile a 30.1 inch high over the hudson bay will weaken 
and shift southeast to the east of lake erie as the saskatchewan low 
regresses southwest at 29.5 inches to montana while another low at 
29.4 inches moves from colorado to the northern plains. the 2nd low 
moves to southern manitoba tonight into tomorrow morning as high 
pressure shifts off the east coast, still at 30.1 inches. tomorrow, 
the low shifts north to lake winnipeg and deepens to 29.2 inches. 
the low then weakens to 29.4 inches as it crosses northern ontario 
by midday wednesday. as the low shifts east through thursday, weak 
high pressure around 30.0 inches expands over much of the eastern 
conus into the weekend.




lsz266-292000-
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 mon jun 29 2026

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

$$

fzus63 kmqt 291401
glfls 
expires:202606292000;;109610

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jun 29 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 29.4 low will track north, and then northwest, from the central 
plains to southern saskatchewan through tonight, deepening to 29.2 
inches. meanwhile a 30.1 inch high over the hudson bay will weaken 
and shift southeast to the east of lake erie as the saskatchewan low 
regresses southwest at 29.5 inches to montana while another low at 
29.4 inches moves from colorado to the northern plains. the 2nd low 
moves to southern manitoba tonight into tomorrow morning as high 
pressure shifts off the east coast, still at 30.1 inches. tomorrow, 
the low shifts north to lake winnipeg and deepens to 29.2 inches. 
the low then weakens to 29.4 inches as it crosses northern ontario 
by midday wednesday. as the low shifts east through thursday, weak 
high pressure around 30.0 inches expands over much of the eastern 
conus into the weekend.




lsz162-292000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon jun 29 2026 /901 am cdt mon jun 29 2026/

.rest of today...northeast winds 10 to 20 knots increasing to
15 to 25 knots late. patchy fog. a chance of showers and a slight
chance of thunderstorms. waves calm to 2 feet building to 2 to
4 feet. 
.tonight...northeast winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then becoming southwest 5 to 15 knots
late. patchy fog. a chance of showers and thunderstorms. waves
subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots increasing to 10 to
20 knots late. areas of dense fog through early afternoon. a
slight chance of showers and thunderstorms by mid afternoon.
waves calm to 2 feet. 
.tuesday night...southwest winds 10 to 20 knots. a slight chance
of showers through midnight. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of showers
and thunderstorms. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots backing southwest
after midnight. showers likely through midnight. a chance of
thunderstorms. a chance of showers after midnight. waves calm to
2 feet. 
.thursday...southwest winds 5 to 15 knots veering north. a chance
of showers. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. a chance of showers and
thunderstorms. waves calm to 2 feet. 

$$

fzus63 kmqt 291401
glfls 
expires:202606292000;;109611

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jun 29 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 29.4 low will track north, and then northwest, from the central 
plains to southern saskatchewan through tonight, deepening to 29.2 
inches. meanwhile a 30.1 inch high over the hudson bay will weaken 
and shift southeast to the east of lake erie as the saskatchewan low 
regresses southwest at 29.5 inches to montana while another low at 
29.4 inches moves from colorado to the northern plains. the 2nd low 
moves to southern manitoba tonight into tomorrow morning as high 
pressure shifts off the east coast, still at 30.1 inches. tomorrow, 
the low shifts north to lake winnipeg and deepens to 29.2 inches. 
the low then weakens to 29.4 inches as it crosses northern ontario 
by midday wednesday. as the low shifts east through thursday, weak 
high pressure around 30.0 inches expands over much of the eastern 
conus into the weekend.




lsz263-292000-
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 mon jun 29 2026

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

$$