fzus61 kbuf 010803
glflo 
expires:202608011500;;432367

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat aug 1 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 ridge of high pressure averaging 30.0 inches will 
drift off the mid atlantic today. an elongated 29.7 inch low will 
move from the ohio valley sunday to the lower great lakes sunday 
night, with a remnant trough drifting towards new england monday. a 
30.0 inch high will then build east across ontario and quebec monday 
through tuesday.


loz063>065-011500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat aug 1 2026

.today...south winds 5 to 15 knots becoming east. waves 2 feet or
less. 
.tonight...east winds 5 to 10 knots becoming southeast. a chance
of showers after midnight. waves 1 foot or less. 
.sunday...southeast winds 5 to 15 knots. showers in the morning,
then showers with a chance of thunderstorms in the afternoon.
waves 2 feet or less. 
.sunday night...southeast winds 10 to 15 knots. showers with a
chance of thunderstorms in the evening, then showers overnight.
waves 2 feet or less. 
.monday...north winds 5 to 15 knots. showers likely during the
day. waves 2 feet or less. 
.tuesday...northeast winds 5 to 10 knots becoming southeast. a
chance of showers tuesday night. waves 1 foot or less. 
.wednesday...south winds 10 knots or less. a chance of showers
and thunderstorms. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 010803
glflo 
expires:202608011500;;432366

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat aug 1 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 ridge of high pressure averaging 30.0 inches will 
drift off the mid atlantic today. an elongated 29.7 inch low will 
move from the ohio valley sunday to the lower great lakes sunday 
night, with a remnant trough drifting towards new england monday. a 
30.0 inch high will then build east across ontario and quebec monday 
through tuesday.


loz062-011500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat aug 1 2026

.today...south winds 10 knots or less becoming east. waves 1 foot
or less. 
.tonight...east winds 5 to 10 knots becoming southeast. a chance
of showers. showers likely late. waves 1 foot or less. 
.sunday...east winds 5 to 10 knots. showers in the morning, then
showers with a chance of thunderstorms in the afternoon. waves
1 foot or less. 
.sunday night...northeast winds 5 to 10 knots becoming north.
showers with a chance of thunderstorms. waves 1 foot or less. 
.monday...north winds 10 knots or less becoming northeast. a
chance of showers during the day. waves 1 foot or less. 
.tuesday...northeast winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 
.wednesday...southeast winds less than 10 knots becoming
southwest. a chance of showers and thunderstorms. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010744
glfle 
expires:202608011415;;431908

open lake forecast for lake erie
national weather service cleveland oh
344 am edt sat aug 1 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...
low pressure 29.60 inches will move east into ohio today, moving 
just south of lake erie. this low will slowly drift east through 
sunday before high pressure 30.00 inches returns for the start of 
next week and persists through at least midweek. 


lez162>164-011415-
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-
344 am edt sat aug 1 2026

.today...southeast winds 5 to 10 knots becoming east. a chance of
showers early. a chance of showers with a slight chance of
thunderstorms late. waves 1 foot or less. 
.tonight...east winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers and thunderstorms early, then
showers with a chance of thunderstorms from late evening on.
waves 1 to 3 feet. 
.sunday...east winds 10 to 15 knots becoming northeast 15 to
20 knots. showers with a chance of thunderstorms. waves 1 to
3 feet. 
.sunday night...northeast winds 15 to 20 knots. a chance of
showers and thunderstorms in the evening, then a chance of
showers overnight. waves 2 to 4 feet. 
.monday...north winds 15 to 20 knots becoming northeast 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...northeast winds 10 knots or less becoming east. waves
2 feet or less. 
.wednesday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010744
glfle 
expires:202608011415;;431909

open lake forecast for lake erie
national weather service cleveland oh
344 am edt sat aug 1 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...
low pressure 29.60 inches will move east into ohio today, moving 
just south of lake erie. this low will slowly drift east through 
sunday before high pressure 30.00 inches returns for the start of 
next week and persists through at least midweek. 


lez165>167-011415-
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-
344 am edt sat aug 1 2026

.today...south winds 5 to 10 knots becoming east. a slight chance
of showers early. waves 1 foot or less. 
.tonight...east winds 10 to 15 knots. a chance of showers and
thunderstorms in the evening, then showers with a chance of
thunderstorms after midnight. waves 1 to 3 feet. 
.sunday...east winds 10 to 15 knots becoming northeast. showers
likely in the morning, then a chance of showers and thunderstorms
in the afternoon. waves 1 to 3 feet. 
.sunday night...northeast winds 15 to 20 knots. showers likely
with a chance of thunderstorms in the evening, then a chance of
showers and thunderstorms overnight. waves 2 to 4 feet. 
.monday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tuesday...east winds 5 to 10 knots becoming southeast. a chance
of showers tuesday night. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots. waves 1 foot or less.

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010744
glfle 
expires:202608011415;;431910

open lake forecast for lake erie
national weather service cleveland oh
344 am edt sat aug 1 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...
low pressure 29.60 inches will move east into ohio today, moving 
just south of lake erie. this low will slowly drift east through 
sunday before high pressure 30.00 inches returns for the start of 
next week and persists through at least midweek. 


lez061-168-169-011415-
ripley to buffalo ny extending from 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-
344 am edt sat aug 1 2026

.today...south winds 10 knots or less becoming northeast. waves
1 foot or less. 
.tonight...northeast winds 5 to 15 knots becoming east. a chance
of showers and thunderstorms. showers likely with a chance of
thunderstorms late. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming northeast.
showers likely with a chance of thunderstorms. waves 2 feet or
less. 
.sunday night...northeast winds 10 to 15 knots. showers with a
chance of thunderstorms. waves 1 to 3 feet building to 2 to
4 feet. 
.monday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday...east winds 10 knots or less becoming southeast. a
chance of showers and thunderstorms during the day, then a chance
of showers tuesday night. waves 2 feet or less. 
.wednesday...south winds 10 knots or less becoming southwest. a
chance of showers and thunderstorms during the day, then a chance
of showers wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 010744
glfsc 
expires:202608011600;;431912

lake st clair forecast
national weather service detroit/pontiac mi
344 am edt sat aug 1 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, 29.70 inches, will slowly track eastward
across the ohio valley through the weekend. this brings rain and
isolated thunderstorm chances to the great lakes both today and
sunday along with elevated northeast winds and waves into saginaw
bay and the thumb nearshores.


lcz460-011600-
lake st clair-
344 am edt sat aug 1 2026

.today...east winds 5 to 10 knots. mostly cloudy. waves 2 feet or
less.
.tonight...northeast winds 5 to 10 knots increasing to 10 to 15
knots in the late evening and overnight. mostly cloudy. a chance of
light showers ...then light showers likely early in the morning.
waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots. showers and a chance of
thunderstorms. waves 1 to 3 feet.
.sunday night...north winds 15 to 20 knots. mostly cloudy with light
showers likely and a chance of thunderstorms early in the
evening...then mostly cloudy with a chance of light showers by
midnight. partly cloudy after midnight. waves 1 to 3 feet.
.monday...north winds 10 to 15 knots. partly cloudy in the morning
then clearing. waves 2 feet or less.
.tuesday...southeast winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.wednesday...south winds 5 to 10 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kdtx 010743
glflh 
expires:202608011600;;431906

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 am edt sat aug 1 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, 29.70 inches, will slowly track eastward
across the ohio valley through the weekend. this brings rain and
isolated thunderstorm chances to the great lakes both today and
sunday along with elevated northeast winds and waves into saginaw
bay and the thumb nearshores.


lhz462>464-011600-
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 am edt sat aug 1 2026

.today...north winds 5 to 10 knots increasing to 10 to 15 knots
late in the afternoon. waves 2 feet or less. 
.tonight...northeast winds 10 to 15 knots. a chance of showers in
the evening...then showers likely after midnight. waves 1 to
3 feet. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. a chance of showers. waves 3 to
5 feet. 
.sunday night...north winds 15 to 20 knots becoming northeast
10 to 15 knots in the late evening and overnight. waves 3 to
5 feet. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots
late in the evening. waves 2 to 4 feet subsiding to 1 to 3 feet
late in the evening. 
.tuesday...east winds 5 to 10 knots early in the morning becoming
light and variable...then becoming north 5 to 10 knots early in
the evening veering to the east. waves 2 feet or less. 
.wednesday...light and variable winds becoming north 5 to
10 knots early in the evening...then veering to the northeast by
midnight. waves 2 feet or less. 


$$

fzus63 kdtx 010743
glflh 
expires:202608011600;;431905

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 am edt sat aug 1 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, 29.70 inches, will slowly track eastward
across the ohio valley through the weekend. this brings rain and
isolated thunderstorm chances to the great lakes both today and
sunday along with elevated northeast winds and waves into saginaw
bay and the thumb nearshores.


lhz362-363-011600-
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 am edt sat aug 1 2026

.today...north winds 5 to 10 knots. waves 2 feet or less. 
.tonight...north winds 5 to 10 knots becoming northeast 10 to
15 knots after midnight. showers likely in the evening...then a
chance of showers after midnight. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots. a chance of showers in
the morning. waves 3 to 5 feet. 
.sunday night...north winds 10 to 15 knots decreasing to 5 to
10 knots by midnight...then increasing to 10 to 15 knots after
midnight. waves 3 to 5 feet. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...light and variable winds becoming east 5 to 10 knots .
waves 2 feet or less. 
.wednesday...light and variable winds. waves 2 feet or less. 


$$

fzus63 kdtx 010743
glflh 
expires:202608011600;;431904

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 am edt sat aug 1 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, 29.70 inches, will slowly track eastward
across the ohio valley through the weekend. this brings rain and
isolated thunderstorm chances to the great lakes both today and
sunday along with elevated northeast winds and waves into saginaw
bay and the thumb nearshores.


lhz361-011600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
343 am edt sat aug 1 2026

.today...light and variable winds. a chance of showers. waves
2 feet or less. 
.tonight...north winds 5 to 10 knots becoming northeast 10 to
15 knots after midnight. a chance of showers. waves 2 feet or
less. 
.sunday...northeast winds 10 to 15 knots becoming light and
variable. waves 1 to 3 feet. 
.sunday night...light and variable winds becoming north 5 to
10 knots after midnight. waves 2 feet or less. 
.monday...north winds 5 to 10 knots in the morning becoming light
and variable. waves 2 feet or less. 
.tuesday...light and variable winds early in the morning becoming
south 5 to 10 knots...then backing to the east early in the
evening becoming light and variable. waves 2 feet or less. 
.wednesday...light and variable winds becoming northwest 5 to
10 knots by midnight. waves 2 feet or less. 


$$

fzus63 kmkx 010749
glflm 
expires:202608011530;;432036

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 am cdt sat aug 1 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 29.6 inches will slowly progress across
northern or central illinois today, allowing winds to slowly 
shift from eastward to northeastward. expect gusts around 30 kt 
in the southern half of the lake. an isolated gale cannot be ruled
out. the low will gradually move east through the ohio valley 
through sunday night, turning winds to northerly and bringing 30 
kt wind gusts again sunday afternoon. isolated gales become 
possible once again sunday afternoon. winds will gradually 
diminish through sunday night. high pressure around 30.0 inches 
then builds into the eastern great lakes monday, lingering through
tuesday night. winds remain light and variable through this time.



lmz080-669-671-673-675-777-779-870-872-874-876-878-011530-
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-
249 am cdt sat aug 1 2026

sheboygan wi to pentwater mi south...

.today...east winds 15 to 25 kt becoming northeast to 30 kt.
showers and slight chance of thunderstorms this morning, then
showers likely with slight chance of thunderstorms this
afternoon. waves 5 to 8 ft occasionally to 10 ft. 
.tonight...northeast winds to 30 kt diminishing to 15 to 25 kt.
chance of showers in the evening, then slight chance of showers
overnight. waves 6 to 9 ft occasionally to 12 ft. 
.sunday...northeast winds 15 to 25 kt becoming north to 30 kt.
waves 6 to 9 ft occasionally to 12 ft. 
.sunday night...north winds to 30 kt becoming northeast 10 to
20 kt overnight. waves 6 to 9 ft occasionally to 12 ft subsiding
to 4 to 7 ft occasionally to 9 ft. 
.monday...northeast winds 10 to 15 kt becoming north 15 to 25 kt
in the afternoon. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.monday night...north winds 10 to 20 kt becoming east 5 to 10 kt.
waves 1 to 3 ft. 
.tuesday...east winds 5 to 10 kt veering to southwest 10 to
20 kt. waves 1 to 2 ft. 
.wednesday...west winds 10 to 15 kt becoming southwest. waves
1 to 2 ft.  

$$

fzus63 kmkx 010749
glflm 
expires:202608011530;;432035

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 am cdt sat aug 1 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 29.6 inches will slowly progress across
northern or central illinois today, allowing winds to slowly 
shift from eastward to northeastward. expect gusts around 30 kt 
in the southern half of the lake. an isolated gale cannot be ruled
out. the low will gradually move east through the ohio valley 
through sunday night, turning winds to northerly and bringing 30 
kt wind gusts again sunday afternoon. isolated gales become 
possible once again sunday afternoon. winds will gradually 
diminish through sunday night. high pressure around 30.0 inches 
then builds into the eastern great lakes monday, lingering through
tuesday night. winds remain light and variable through this time.



lmz261-362-364-366-563-565-567-868-011530-
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-
249 am cdt sat aug 1 2026

sheboygan wi to pentwater mi north...

.today...northeast winds 15 to 25 kt becoming north 10 to 20 kt.
chance of showers. waves 2 to 4 ft. 
.tonight...northeast winds 10 to 20 kt. slight chance of showers
in the evening. waves 3 to 5 ft. 
.sunday...northeast winds 10 to 20 kt becoming north to 30 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.sunday night...north winds to 30 kt becoming northeast 10 to
20 kt overnight. waves 4 to 7 ft occasionally to 9 ft subsiding
to 2 to 4 ft. 
.monday...northeast winds 10 to 15 kt becoming north 15 to 25 kt
in the afternoon. waves 1 to 3 ft. 
.monday night...east winds 10 to 20 kt veering to south 5 to
10 kt. waves 1 to 3 ft. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.wednesday...west winds 10 to 15 kt becoming northwest. waves
1 to 2 ft.  

$$

fzus63 kmqt 010801
glfls 
expires:202608012000;;432260

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 1 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... 

early this morning a 29.6 inch low is over northern illinois while a 
30.0 inch high is over manitoba. through the weekend, the high 
shifts east over northern ontario, extending weak ridging over the 
lake while the low moves south of the great lakes. meanwhile, a 29.3 
inch low moves from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the lower great lakes as the low weakens to 29.5 
inches over western hudson bay. this sends a 29.9 inch trough over 
the lake monday night and tuesday while the high shifts to the east 
coast and builds to 30.2 inches. while the low spins over hudson 
bay, a 30.0 inch high over the northern plains moves east 
over the great lakes wednesday and thursday.




lsz162-012000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat aug 1 2026 /301 am cdt sat aug 1 2026/

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...northeast winds 5 to 15 knots veering east in the
afternoon, then backing northeast late. a slight chance of
showers by mid afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering northeast late.
waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots veering southwest after
midnight. a chance of showers after midnight. waves calm to
2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.

$$

fzus63 kmqt 010801
glfls 
expires:202608012000;;432261

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 1 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... 

early this morning a 29.6 inch low is over northern illinois while a 
30.0 inch high is over manitoba. through the weekend, the high 
shifts east over northern ontario, extending weak ridging over the 
lake while the low moves south of the great lakes. meanwhile, a 29.3 
inch low moves from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the lower great lakes as the low weakens to 29.5 
inches over western hudson bay. this sends a 29.9 inch trough over 
the lake monday night and tuesday while the high shifts to the east 
coast and builds to 30.2 inches. while the low spins over hudson 
bay, a 30.0 inch high over the northern plains moves east 
over the great lakes wednesday and thursday.




lsz263-012000-
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 am edt sat aug 1 2026

.early this morning...northeast winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. patchy fog through early afternoon.
waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots veering south
after midnight. waves building to 1 to 3 feet. 
.tuesday...southwest winds 10 to 20 knots becoming northwest 5 to
15 knots. a chance of showers. waves subsiding to calm to 2 feet.
.wednesday...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 010801
glfls 
expires:202608012000;;432262

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 1 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... 

early this morning a 29.6 inch low is over northern illinois while a 
30.0 inch high is over manitoba. through the weekend, the high 
shifts east over northern ontario, extending weak ridging over the 
lake while the low moves south of the great lakes. meanwhile, a 29.3 
inch low moves from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the lower great lakes as the low weakens to 29.5 
inches over western hudson bay. this sends a 29.9 inch trough over 
the lake monday night and tuesday while the high shifts to the east 
coast and builds to 30.2 inches. while the low spins over hudson 
bay, a 30.0 inch high over the northern plains moves east 
over the great lakes wednesday and thursday.




lsz264-012000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sat aug 1 2026

.early this morning...northeast winds 5 to 15 knots. areas of
dense fog. a slight chance of showers. waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots. patchy dense fog through
early afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering northeast after
midnight. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots backing northwest late.
waves calm to 2 feet. 
.sunday night...northwest winds less than 10 knots backing
southeast after midnight. waves calm to 2 feet. 
.monday...south winds less than 10 knots becoming southeast 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. a
chance of showers. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 010801
glfls 
expires:202608012000;;432263

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 1 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... 

early this morning a 29.6 inch low is over northern illinois while a 
30.0 inch high is over manitoba. through the weekend, the high 
shifts east over northern ontario, extending weak ridging over the 
lake while the low moves south of the great lakes. meanwhile, a 29.3 
inch low moves from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the lower great lakes as the low weakens to 29.5 
inches over western hudson bay. this sends a 29.9 inch trough over 
the lake monday night and tuesday while the high shifts to the east 
coast and builds to 30.2 inches. while the low spins over hudson 
bay, a 30.0 inch high over the northern plains moves east 
over the great lakes wednesday and thursday.




lsz265-012000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sat aug 1 2026

.early this morning...north winds 10 to 20 knots. patchy fog. a
slight chance of showers. waves calm to 2 feet. 
.today...north winds 10 to 20 knots. patchy dense fog. a slight
chance of showers. waves calm to 2 feet. 
.tonight...north winds 10 to 20 knots veering northeast after
midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots becoming north 5 to
15 knots late. waves calm to 2 feet. 
.sunday night...north winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. waves calm to 2 feet. 
.monday night...southeast winds 15 to 25 knots becoming south
10 to 20 knots after midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots veering west. a chance of
showers. waves calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots backing southwest.
waves calm to 2 feet. 

$$

fzus63 kmqt 010801
glfls 
expires:202608012000;;432264

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 1 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... 

early this morning a 29.6 inch low is over northern illinois while a 
30.0 inch high is over manitoba. through the weekend, the high 
shifts east over northern ontario, extending weak ridging over the 
lake while the low moves south of the great lakes. meanwhile, a 29.3 
inch low moves from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the lower great lakes as the low weakens to 29.5 
inches over western hudson bay. this sends a 29.9 inch trough over 
the lake monday night and tuesday while the high shifts to the east 
coast and builds to 30.2 inches. while the low spins over hudson 
bay, a 30.0 inch high over the northern plains moves east 
over the great lakes wednesday and thursday.




lsz266-012000-
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 am edt sat aug 1 2026

.early this morning...north winds 5 to 15 knots. areas of dense
fog. a slight chance of showers. waves calm to 2 feet. 
.today...north winds 5 to 15 knots increasing to 10 to 20 knots
late. patchy dense fog. a slight chance of showers. waves calm to
2 feet. 
.tonight...north winds 10 to 20 knots veering northeast after
midnight. waves building to 1 to 3 feet. 
.sunday...northeast winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.sunday night...north winds 5 to 15 knots veering northeast after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots veering south
after midnight. waves building to 1 to 3 feet. 
.tuesday...south winds 10 to 20 knots becoming west 5 to
15 knots. a chance of showers. waves subsiding to calm to 2 feet.
.wednesday...northwest winds 5 to 15 knots backing southwest.
waves calm to 2 feet. 

$$

fzus63 kmqt 010801
glfls 
expires:202608012000;;432265

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 1 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... 

early this morning a 29.6 inch low is over northern illinois while a 
30.0 inch high is over manitoba. through the weekend, the high 
shifts east over northern ontario, extending weak ridging over the 
lake while the low moves south of the great lakes. meanwhile, a 29.3 
inch low moves from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the lower great lakes as the low weakens to 29.5 
inches over western hudson bay. this sends a 29.9 inch trough over 
the lake monday night and tuesday while the high shifts to the east 
coast and builds to 30.2 inches. while the low spins over hudson 
bay, a 30.0 inch high over the northern plains moves east 
over the great lakes wednesday and thursday.




lsz267-012000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sat aug 1 2026

.early this morning...northwest winds 5 to 15 knots. areas of
dense fog. a chance of showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.today...north winds 5 to 15 knots increasing to 10 to 20 knots
late. patchy fog. a chance of showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.tonight...northeast 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. 
.sunday...northeast winds 10 to 20 knots backing northwest late.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.sunday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots backing north by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots veering west. a chance of
showers. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 

$$