fzus61 kbuf 010202
glflo 
expires:202607010900;;196406

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue jun 30 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 will build into the ohio valley and mid 
atlantic tonight and wednesday, where it will remain through at 
least thursday. a weak 29.9 inch trough will then approach and cross 
the lake friday into saturday.


loz063>065-010900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt tue jun 30 2026

.overnight...south winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.wednesday...southwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.wednesday night...southwest winds 5 to 15 knots. a chance of
showers and thunderstorms in the evening. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 
.thursday night...southwest winds 5 to 15 knots becoming west.
waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots. a chance of showers and
thunderstorms friday night. waves 1 to 3 feet. 
.saturday...west winds 10 knots or less becoming north. a chance
of showers and thunderstorms. waves 1 foot or less. 
.sunday...northeast winds less than 10 knots becoming north. a
chance of showers sunday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 010202
glflo 
expires:202607010900;;196405

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue jun 30 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 will build into the ohio valley and mid 
atlantic tonight and wednesday, where it will remain through at 
least thursday. a weak 29.9 inch trough will then approach and cross 
the lake friday into saturday.


loz062-010900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt tue jun 30 2026

.overnight...southwest winds 5 to 10 knots. a chance of
showers and thunderstorms. waves 1 to 2 feet. 
.wednesday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.wednesday night...southwest winds 10 to 15 knots. showers likely
with a chance of thunderstorms in the evening. waves 1 to 3 feet.
.thursday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.thursday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.friday...west winds 5 to 10 knots becoming southwest. a chance
of showers and thunderstorms. waves 1 to 2 feet. 
.saturday...west winds 10 knots or less becoming north. a chance
of showers and thunderstorms during the day, then a chance of
showers saturday night. waves 1 foot or less. 
.sunday...northeast winds 10 knots or less. a chance of showers
sunday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010128
glfle 
expires:202607010815;;195542

open lake forecast for lake erie
national weather service cleveland oh
928 pm edt tue jun 30 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...
a ridge averaging 30.00 inches will remain over the area through 
friday. a weak trough averaging 29.90 inches will settle south
across lake erie friday night into saturday.


lez162>164-010815-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
928 pm edt tue jun 30 2026

.overnight...southwest winds around 10 knots. waves 1 to
2 feet. 
.wednesday...southwest winds 5 to 10 knots. waves 2 feet or less.
.wednesday night...southwest winds around 10 knots. waves around
1 foot. 
.thursday...southwest winds 10 to 15 knots. waves 1 to 2 feet. 
.thursday night...southwest winds 5 to 15 knots. waves 2 feet or
less. 
.friday...southwest winds 5 to 10 knots becoming west. a chance
of showers and thunderstorms. waves 1 foot or less. 
.saturday...west winds 5 to 10 knots becoming northeast. showers
likely with a chance of thunderstorms during the day, then a
chance of showers and thunderstorms saturday night. waves 1 foot
or less. 
.sunday...northeast winds 5 to 10 knots. a chance of showers and
thunderstorms during the day, then a chance of showers sunday
night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010128
glfle 
expires:202607010815;;195543

open lake forecast for lake erie
national weather service cleveland oh
928 pm edt tue jun 30 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...
a ridge averaging 30.00 inches will remain over the area through 
friday. a weak trough averaging 29.90 inches will settle south
across lake erie friday night into saturday.


lez061-165>169-010815-
ripley to buffalo ny extending from 5nm 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-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
928 pm edt tue jun 30 2026

.overnight...southwest winds 5 to 15 knots. a slight chance
of showers. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.wednesday night...southwest winds 5 to 10 knots. waves 1 to
3 feet. 
.thursday...southwest winds 10 to 15 knots. waves 1 to 2 feet. 
.thursday night...southwest winds 5 to 15 knots. waves 1 to
2 feet. 
.friday...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms friday night. waves 2 feet or less. 
.saturday...west winds 5 to 10 knots becoming northeast. a chance
of showers and thunderstorms. waves 1 foot or less. 
.sunday...northeast winds 5 to 10 knots. a chance of showers.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 010147
glflh 
expires:202607011000;;196010

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 pm edt tue jun 30 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 hot and humid air mass maintains residence through
the week with modest south to southwest winds. the central great
lakes will largely remain dry and stable through thursday.
however, the prevailing storm track directed over the northern
great lakes may bring occasional rounds of storms to northern
lake huron.


lhz462>464-011000-
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-
947 pm edt tue jun 30 2026

.rest of tonight...southwest winds 5 to 10 knots increasing to
10 to 15 knots after midnight. waves 1 to 3 feet. 
.wednesday...southwest winds 5 to 10 knots backing to the south
in the afternoon. waves 1 to 3 feet. 
.wednesday night...southwest winds 5 to 10 knots increasing to
10 to 15 knots after midnight. waves 1 to 3 feet. 
.thursday...southwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late morning and afternoon. 
.thursday night...southwest winds 10 to 15 knots becoming west
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.friday...southwest winds 5 to 10 knots backing to the south late
in the afternoon...then veering to the southwest late in the
evening. showers likely and a chance of thunderstorms. waves
2 feet or less. 
.saturday...west winds 5 to 10 knots veering to the north. a
chance of thunderstorms early in the morning. a chance of showers
early in the morning. waves 2 feet or less. 
.sunday...north winds 5 to 10 knots. a chance of showers early in
the evening. waves 2 feet or less. 


$$

fzus63 kdtx 010147
glflh 
expires:202607011000;;196008

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 pm edt tue jun 30 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 hot and humid air mass maintains residence through
the week with modest south to southwest winds. the central great
lakes will largely remain dry and stable through thursday.
however, the prevailing storm track directed over the northern
great lakes may bring occasional rounds of storms to northern
lake huron.


lhz361-011000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
947 pm edt tue jun 30 2026

.rest of tonight...light and variable winds becoming south 5 to
10 knots after midnight. numerous showers and scattered
thunderstorms this evening...then scattered showers and
thunderstorms after midnight. areas of fog. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then veering
to the southwest 5 to 10 knots late in the afternoon. scattered
showers and thunderstorms in the morning. waves 1 to 3 feet. 
.wednesday night...south winds 5 to 10 knots increasing to 10 to
15 knots after midnight. scattered showers and thunderstorms in
the evening...then scattered showers after midnight. waves 1 to
3 feet. 
.thursday...southwest winds 10 to 15 knots. scattered showers in
the morning. waves 2 to 4 feet. 
.thursday night...west winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. waves 1 to 3 feet. 
.friday...west winds 5 to 10 knots. a chance of thunderstorms
late in the morning. a chance of showers. waves 2 feet or less. 
.saturday...northwest winds 5 to 10 knots backing to the west. a 
chance of showers early in the morning. waves 2 feet or less. 
.sunday...northeast winds 5 to 10 knots until afternoon becoming
light and variable. waves 2 feet or less. 


$$

fzus63 kdtx 010147
glfsc 
expires:202607011000;;196013

lake st clair forecast
national weather service detroit/pontiac mi
947 pm edt tue jun 30 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...a hot and humid air mass maintains residence through
the week with modest south to southwest winds. the central great
lakes will largely remain dry and stable through thursday.
however, the prevailing storm track directed over the northern
great lakes may bring occasional rounds of storms to northern
lake huron.


lcz460-011000-
lake st clair-
947 pm edt tue jun 30 2026

.rest of tonight...southwest winds 5 to 10 knots increasing to 10 to
15 knots after midnight. mostly clear. waves 2 feet or less.
.wednesday...southwest winds 5 to 10 knots increasing to 10 to 15
knots in the afternoon. sunny. waves 2 feet or less.
.wednesday night...southwest winds 10 to 15 knots. clear. waves 2
feet or less.
.thursday...southwest winds 5 to 10 knots increasing to 10 to 15
knots in the late morning and afternoon. sunny. waves 2 feet or
less.
.thursday night...west winds 10 to 15 knots diminishing to 5 to 10
knots in the late evening and overnight. mostly clear. waves 2 feet
or less.
.friday...southwest winds 5 to 10 knots. mostly sunny in the
morning...then partly cloudy with light showers likely and a chance
of thunderstorms in the afternoon and evening. waves 2 feet or less.
.saturday...north winds 5 to 10 knots. partly cloudy. showers likely
and a chance of thunderstorms. waves 2 feet or less.
.sunday...northeast winds 5 to 10 knots. partly cloudy. a chance of
showers and thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 010147
glflh 
expires:202607011000;;196009

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 pm edt tue jun 30 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 hot and humid air mass maintains residence through
the week with modest south to southwest winds. the central great
lakes will largely remain dry and stable through thursday.
however, the prevailing storm track directed over the northern
great lakes may bring occasional rounds of storms to northern
lake huron.


lhz362-363-011000-
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-
947 pm edt tue jun 30 2026

.rest of tonight...southwest winds 10 to 15 knots. scattered
showers and thunderstorms this evening. areas of fog. waves 2 to
4 feet. 
.wednesday...southwest winds 5 to 10 knots. waves 1 to 3 feet. 
.wednesday night...south winds 5 to 10 knots becoming southwest
10 to 15 knots after midnight. waves 2 to 4 feet. 
.thursday...southwest winds 10 to 15 knots becoming south 5 to
10 knots early in the afternoon. scattered showers in the
morning...then scattered showers and thunderstorms in the
afternoon. waves 2 to 4 feet. 
.thursday night...southwest winds 5 to 10 knots early in the
evening becoming light and variable. scattered showers in the
evening. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
evening and overnight. 
.friday...light and variable winds becoming southwest 5 to
10 knots late in the morning...then backing to the southeast late
in the afternoon veering to the west late in the evening. a
chance of showers and thunderstorms. waves 2 feet or less. 
.saturday...west winds 5 to 10 knots becoming light and variable.
a chance of showers early in the morning. waves 2 feet or less. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 010203
glflm 
expires:202607010930;;196436

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 pm cdt tue jun 30 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...

modest to breezy south to southwest winds will prevail into 
thursday, then lighter winds should occur into friday, as high 
pressure around 30.1 inches remains to the southeast of the great 
lakes, while low pressure around 29.5 inches moves slowly east
across central manitoba into james bay. 

chances for thunderstorms are forecast across the northern half 
of the lake through wednesday night. there are chances for 
thunderstorms across the southern two thirds of the lake thursday 
into friday evening, and across the southern half of the lake 
later friday night into sunday. some strong to severe storms may 
occur at times, though confidence remains low with the timing of 
each round of storms. 

patchy marine fog will be possible at times, primarily over the 
northern half of the lake, as the warm and moist airmass moves 
over the lake.


lmz261-362-364-366-563-565-567-868-010930-
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-
903 pm cdt tue jun 30 2026

sheboygan wi to pentwater mi north...

.rest of tonight...south winds 15 to 25 kt becoming southwest.
patchy dense fog through early evening, then patchy fog
overnight. chance of thunderstorms and slight chance of showers
through early evening, then chance of showers and slight chance
of thunderstorms overnight. waves 3 to 5 ft subsiding to 2 to
4 ft. 
.wednesday...southwest winds 10 to 20 kt becoming south 15 to
25 kt. patchy fog in the morning. chance of showers and slight
chance of thunderstorms. waves 3 to 5 ft. 
.wednesday night...southwest winds 15 to 25 kt. chance of showers
and thunderstorms in the evening, then numerous showers with a
chance of thunderstorms overnight. waves 3 to 5 ft. 
.thursday...southwest winds 15 to 25 kt. scattered showers. waves
2 to 4 ft. 
.thursday night...southwest winds 10 to 20 kt diminishing to
10 to 15 kt. scattered showers with a chance of thunderstorms in
the evening, then numerous showers overnight. waves 2 to 4 ft. 
.friday...southwest winds 10 to 15 kt increasing to 10 to 20 kt.
numerous showers in the morning, then numerous showers with a
chance of thunderstorms in the afternoon. waves 1 to 2 ft. 
.friday night...west winds 10 to 15 kt veering to north 5 to
10 kt. showers likely with a chance of thunderstorms. waves 1 to
2 ft. 
.saturday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 2 ft. 
.sunday...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 010203
glflm 
expires:202607010930;;196437

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 pm cdt tue jun 30 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...

modest to breezy south to southwest winds will prevail into 
thursday, then lighter winds should occur into friday, as high 
pressure around 30.1 inches remains to the southeast of the great 
lakes, while low pressure around 29.5 inches moves slowly east
across central manitoba into james bay. 

chances for thunderstorms are forecast across the northern half 
of the lake through wednesday night. there are chances for 
thunderstorms across the southern two thirds of the lake thursday 
into friday evening, and across the southern half of the lake 
later friday night into sunday. some strong to severe storms may 
occur at times, though confidence remains low with the timing of 
each round of storms. 

patchy marine fog will be possible at times, primarily over the 
northern half of the lake, as the warm and moist airmass moves 
over the lake.


lmz080-669-671-673-675-777-779-870-872-874-876-878-010930-
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-
903 pm cdt tue jun 30 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southwest winds 15 to 25 kt diminishing to
10 to 20 kt. waves 2 to 4 ft. 
.wednesday...southwest winds 10 to 20 kt becoming south. waves
2 to 4 ft. 
.wednesday night...south winds 10 to 20 kt becoming southwest.
scattered showers overnight. waves 3 to 5 ft. 
.thursday...southwest winds 10 to 20 kt. scattered showers with a
chance of thunderstorms in the afternoon. waves 2 to 4 ft. 
.thursday night...southwest winds 10 to 20 kt diminishing to 5 to
10 kt overnight. scattered showers with a chance of thunderstorms
in the evening, then scattered showers overnight. waves 2 to
4 ft. 
.friday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
scattered showers in the morning, then scattered showers with a
chance of thunderstorms in the afternoon. waves 1 to 3 ft. 
.friday night...southwest winds 10 to 15 kt becoming west.
showers likely with a chance of thunderstorms. waves 1 to 3 ft.
.saturday...northwest winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 3 ft. 
.sunday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmqt 010201
glfls 
expires:202607010800;;196301

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue jun 30 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 29.3 inch low will remain stalled near lake winnipeg tonight and 
gradually weaken to 29.5 inches by wednesday morning. it will then 
weaken further with a broad 29.6 inch low over ontario and quebec by 
late wednesday afternoon. the low will push toward the hudson bay 
and quebec wednesday night into thursday dragging a 29.7 inch trough 
over lake superior. thereafter a 30.0 inch high will build over 
ontario, extending south into the upper great lakes through the 
weekend and into next week.




lsz267-010800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt tue jun 30 2026

...dense fog advisory in effect until 11 am edt wednesday...

.rest of tonight...south winds 10 to 20 knots veering southwest
after midnight. patchy fog by midnight. areas of dense fog after
midnight. a slight chance of showers and thunderstorms. some
thunderstorms may be severe by midnight. waves 1 to 3 feet
subsiding to calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing southeast in
the afternoon, then 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. 
.wednesday night...south winds 10 to 20 knots veering southwest
late. showers likely through midnight. a chance of thunderstorms.
a chance of showers after midnight. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...south winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.friday...northwest winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202607010800;;196296

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue jun 30 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 29.3 inch low will remain stalled near lake winnipeg tonight and 
gradually weaken to 29.5 inches by wednesday morning. it will then 
weaken further with a broad 29.6 inch low over ontario and quebec by 
late wednesday afternoon. the low will push toward the hudson bay 
and quebec wednesday night into thursday dragging a 29.7 inch trough 
over lake superior. thereafter a 30.0 inch high will build over 
ontario, extending south into the upper great lakes through the 
weekend and into next week.




lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt tue jun 30 2026 /901 pm cdt tue jun 30 2026/

...dense fog advisory in effect until 11 am edt /10 am cdt/
wednesday...

.rest of tonight...southwest winds 10 to 20 knots diminishing to
5 to 15 knots late. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a slight chance of showers and
thunderstorms by mid afternoon. waves calm to 2 feet. 
.wednesday night...southwest winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms through midnight.
waves calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots. waves building to
1 to 3 feet. 
.thursday night...west winds 5 to 15 knots veering northeast
after midnight. a slight chance of showers and thunderstorms
after midnight. waves subsiding to calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots becoming north less than
10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202607010800;;196297

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue jun 30 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 29.3 inch low will remain stalled near lake winnipeg tonight and 
gradually weaken to 29.5 inches by wednesday morning. it will then 
weaken further with a broad 29.6 inch low over ontario and quebec by 
late wednesday afternoon. the low will push toward the hudson bay 
and quebec wednesday night into thursday dragging a 29.7 inch trough 
over lake superior. thereafter a 30.0 inch high will build over 
ontario, extending south into the upper great lakes through the 
weekend and into next week.




lsz263-010800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1001 pm edt tue jun 30 2026

...dense fog advisory in effect until 11 am edt wednesday...

.rest of tonight...southwest winds 5 to 15 knots. waves 1 to
3 feet. 
.wednesday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a slight chance of showers and
thunderstorms by mid afternoon. waves building to 2 to 4 feet. 
.wednesday night...southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a chance of showers and a slight
chance of thunderstorms through midnight. waves subsiding to calm
to 2 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.thursday night...west winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight. a slight chance of showers and
thunderstorms after midnight. waves subsiding to calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...northeast winds 5 to 15 knots veering east. waves
calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202607010800;;196298

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue jun 30 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 29.3 inch low will remain stalled near lake winnipeg tonight and 
gradually weaken to 29.5 inches by wednesday morning. it will then 
weaken further with a broad 29.6 inch low over ontario and quebec by 
late wednesday afternoon. the low will push toward the hudson bay 
and quebec wednesday night into thursday dragging a 29.7 inch trough 
over lake superior. thereafter a 30.0 inch high will build over 
ontario, extending south into the upper great lakes through the 
weekend and into next week.




lsz264-010800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt tue jun 30 2026

...dense fog advisory in effect until 11 am edt wednesday...

.rest of tonight...southwest winds 5 to 15 knots. patchy fog.
waves 1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots. waves building to
2 to 4 feet. 
.wednesday night...southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a slight chance of showers and
thunderstorms through midnight. waves subsiding to calm to
2 feet. 
.thursday...southwest winds 10 to 20 knots. waves building to
2 to 4 feet. 
.thursday night...west winds 5 to 15 knots veering north after
midnight. waves subsiding to calm to 2 feet. 
.friday...northeast winds less than 10 knots. waves calm to
2 feet. 
.friday night...northwest winds less than 10 knots veering north
after midnight. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots veering east. waves
calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202607010800;;196299

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue jun 30 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 29.3 inch low will remain stalled near lake winnipeg tonight and 
gradually weaken to 29.5 inches by wednesday morning. it will then 
weaken further with a broad 29.6 inch low over ontario and quebec by 
late wednesday afternoon. the low will push toward the hudson bay 
and quebec wednesday night into thursday dragging a 29.7 inch trough 
over lake superior. thereafter a 30.0 inch high will build over 
ontario, extending south into the upper great lakes through the 
weekend and into next week.




lsz265-010800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt tue jun 30 2026

...dense fog advisory in effect until 11 am edt wednesday...

.rest of tonight...southwest winds 10 to 20 knots. patchy fog.
waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing south in the
afternoon, then increasing to 10 to 20 knots late. a slight
chance of showers and thunderstorms by mid afternoon. waves calm
to 2 feet. 
.wednesday night...south winds 10 to 20 knots veering southwest
after midnight. a chance of showers and thunderstorms. waves calm
to 2 feet. 
.thursday...west winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots veering north after
midnight. a chance of showers. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots veering east. waves
calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202607010800;;196300

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue jun 30 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 29.3 inch low will remain stalled near lake winnipeg tonight and 
gradually weaken to 29.5 inches by wednesday morning. it will then 
weaken further with a broad 29.6 inch low over ontario and quebec by 
late wednesday afternoon. the low will push toward the hudson bay 
and quebec wednesday night into thursday dragging a 29.7 inch trough 
over lake superior. thereafter a 30.0 inch high will build over 
ontario, extending south into the upper great lakes through the 
weekend and into next week.




lsz266-010800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1001 pm edt tue jun 30 2026

...dense fog advisory in effect until 11 am edt wednesday...

.rest of tonight...south winds 10 to 20 knots veering southwest
after midnight. a slight chance of showers and thunderstorms by
midnight. patchy fog. some thunderstorms may be severe. waves
1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots becoming south 5 to
15 knots in the afternoon, then increasing to 10 to 20 knots
late. patchy dense fog through early afternoon. a slight 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. a chance of showers and a slight chance of
thunderstorms. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.thursday night...southwest winds 5 to 15 knots veering west
after midnight. waves subsiding to calm to 2 feet. 
.friday...northeast winds 5 to 15 knots backing north by mid
afternoon. a chance of showers. waves calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots veering north after
midnight. a chance of showers. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$