fzus61 kbuf 070203
glflo 
expires:202608070900;;744538

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu aug 6 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 30.3 inch high off the mid-alantic will drift south 
and southeast while weakening to 30.2 inches through saturday. 
meanwhile, a 29.4 inch low over northeastern manitoba will slowly 
track east over the hudson bay and weaken to 29.6 inches by saturday 
while sending its cold front through the region. a 30.1 inch high 
over the southeast will then nose in over lake ontario sunday 
followed by a 29.7 inch low that will pass by to the north of the 
lake monday through tuesday.


loz062-070900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu aug 6 2026

.overnight...south winds less than 10 knots becoming
southwest. waves 1 foot or less. 
.friday...light and variable winds. a chance of showers in the
morning, then showers likely early in the afternoon. showers
likely with a chance of thunderstorms late. waves 1 foot or less.
.friday night...southeast winds 10 knots or less becoming
southwest. a chance of showers. waves 1 foot or less. 
.saturday...southwest winds 5 to 15 knots. a chance of showers in
the morning, then a chance of showers and thunderstorms in the
afternoon. waves 1 to 2 feet. 
.saturday night...southwest winds 10 to 15 knots becoming west. a
chance of showers and thunderstorms in the evening, then a chance
of showers overnight. waves 1 to 2 feet. 
.sunday...west winds 5 to 10 knots becoming southwest. a chance
of showers sunday night. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms during the day, then showers likely with a chance
of thunderstorms monday night. waves 1 to 2 feet. 
.tuesday...west winds 5 to 10 knots. showers likely with a chance
of thunderstorms during the day, then a chance of showers tuesday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 070203
glflo 
expires:202608070900;;744539

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu aug 6 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 30.3 inch high off the mid-alantic will drift south 
and southeast while weakening to 30.2 inches through saturday. 
meanwhile, a 29.4 inch low over northeastern manitoba will slowly 
track east over the hudson bay and weaken to 29.6 inches by saturday 
while sending its cold front through the region. a 30.1 inch high 
over the southeast will then nose in over lake ontario sunday 
followed by a 29.7 inch low that will pass by to the north of the 
lake monday through tuesday.


loz063>065-070900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu aug 6 2026

.overnight...southwest winds 10 knots or less. waves 1 foot
or less. 
.friday...southwest winds less than 10 knots becoming east. a
chance of showers early in the afternoon. showers likely with a
chance of thunderstorms late. waves 1 foot or less. 
.friday night...light and variable winds becoming south 5 to
10 knots. a chance of showers and thunderstorms in the evening,
then a chance of showers overnight. waves 1 foot or less. 
.saturday...southwest winds 5 to 15 knots. a chance of showers in
the morning, then a chance of showers and thunderstorms in the
afternoon. waves 2 feet or less. 
.saturday night...southwest winds 10 to 15 knots becoming west. a
chance of showers and thunderstorms in the evening, then a chance
of showers overnight. waves 1 to 3 feet. 
.sunday...west winds 5 to 15 knots becoming southwest. waves 1 to
3 feet. 
.monday...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms during the day, then showers likely with a chance
of thunderstorms monday night. waves 1 to 2 feet. 
.tuesday...west winds 5 to 10 knots. showers likely with a chance
of thunderstorms during the day, then a chance of showers tuesday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 070149
glfle 
expires:202608070815;;744249

open lake forecast for lake erie
national weather service cleveland oh
949 pm edt thu aug 6 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 trough averaging 30.00 inches will remain to the northwest of
the lake through friday morning. another trough averaging 29.90
inches will enter the region from the west friday into saturday. a
ridge averaging 30.00 inches will build in briefly on sunday
followed by low pressure 29.90 inches on monday and persisting
through tuesday.


lez165>167-070815-
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-
949 pm edt thu aug 6 2026

.rest of tonight...south winds less than 10 knots. a slight
chance of showers and thunderstorms, then a chance of showers and
thunderstorms late. waves 1 foot or less. 
.friday...south winds 5 to 10 knots becoming southwest. a chance
of showers and thunderstorms. waves 1 foot or less. 
.friday night...south winds 5 to 15 knots becoming southwest. a
chance of showers and thunderstorms. waves 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms in the afternoon. waves 1 to 3 feet. 
.saturday night...southwest winds 10 to 15 knots becoming north.
a chance of showers and thunderstorms in the evening. waves 1 to
3 feet. 
.sunday...northwest winds 5 to 15 knots becoming southwest. a
chance of showers during the day, then a chance of showers and
thunderstorms sunday night. waves 1 to 3 feet. 
.monday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of thunderstorms during the day, then showers
with a chance of thunderstorms monday night. waves 1 to 3 feet
building to 2 to 4 feet. 
.tuesday...west winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers and thunderstorms during the day,
then a chance of showers tuesday night. waves 3 to 5 feet
subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 070149
glfle 
expires:202608070815;;744250

open lake forecast for lake erie
national weather service cleveland oh
949 pm edt thu aug 6 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 trough averaging 30.00 inches will remain to the northwest of
the lake through friday morning. another trough averaging 29.90
inches will enter the region from the west friday into saturday. a
ridge averaging 30.00 inches will build in briefly on sunday
followed by low pressure 29.90 inches on monday and persisting
through tuesday.


lez061-168-169-070815-
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-
949 pm edt thu aug 6 2026

.rest of tonight...south winds less than 10 knots. a chance of
showers with a slight chance of thunderstorms late. waves 1 foot
or less. 
.friday...south winds 10 knots or less becoming southwest. a
chance of showers and thunderstorms. waves 1 foot or less. 
.friday night...southwest winds 10 knots or less increasing to
10 to 15 knots. a chance of showers and thunderstorms. waves 1 to
3 feet. 
.saturday...southwest winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.saturday night...west winds 5 to 15 knots becoming northwest. a
chance of showers and thunderstorms in the evening, then a chance
of showers overnight. waves 1 to 3 feet. 
.sunday...northwest winds 10 knots or less becoming southwest
10 to 15 knots. showers likely with a chance of thunderstorms
sunday night. waves 2 feet or less. 
.monday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers and thunderstorms during the day,
then showers with a chance of thunderstorms monday night. waves
1 to 3 feet building to 2 to 4 feet. 
.tuesday...west winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers. waves 3 to 5 feet subsiding to
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 070149
glfle 
expires:202608070815;;744248

open lake forecast for lake erie
national weather service cleveland oh
949 pm edt thu aug 6 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 trough averaging 30.00 inches will remain to the northwest of
the lake through friday morning. another trough averaging 29.90
inches will enter the region from the west friday into saturday. a
ridge averaging 30.00 inches will build in briefly on sunday
followed by low pressure 29.90 inches on monday and persisting
through tuesday.


lez162>164-070815-
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-
949 pm edt thu aug 6 2026

.rest of tonight...south winds 10 knots or less becoming
southwest. a slight chance of showers and thunderstorms late this
evening, then a chance of showers with a slight chance of
thunderstorms after midnight. a chance of showers and
thunderstorms late. waves 1 foot or less. 
.friday...south winds 5 to 10 knots. a chance of showers and
thunderstorms early, then a slight chance of showers and
thunderstorms late in the morning. a chance of showers and
thunderstorms in the afternoon. waves 1 foot or less. 
.friday night...south winds 5 to 15 knots becoming southwest. a
chance of showers and thunderstorms in the evening, then a chance
of showers overnight. waves 2 feet or less. 
.saturday...southwest winds 10 to 15 knots becoming west. a
chance of showers in the morning, then a chance of showers and
thunderstorms in the afternoon. waves 1 to 2 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest. a
chance of showers in the evening. waves 2 feet or less. 
.sunday...west winds 5 to 15 knots becoming southwest. a chance
of showers during the day, then showers likely with a chance of
thunderstorms sunday night. waves 2 feet or less. 
.monday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers and thunderstorms during the day,
then showers likely with a chance of thunderstorms monday night.
waves 1 to 3 feet. 
.tuesday...west winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of showers and thunderstorms during the day,
then showers likely tuesday night. waves 1 to 3 feet subsiding to
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 070148
glfsc 
expires:202608071000;;744240

lake st clair forecast
national weather service detroit/pontiac mi
948 pm edt thu aug 6 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...periods of unsettled weather will continue over the
next few days. scattered showers and thunderstorms will remain
possible, as a frontal boundary hangs around southern michigan.
brief period of high pressure, 30.00 inches, fills in ahead of
the next cold front which tracks through this weekend.


lcz460-071000-
lake st clair-
948 pm edt thu aug 6 2026

.rest of tonight...southeast winds 5 to 10 knots veering to the
south early in the morning. mostly cloudy. a chance of light
showers. waves 2 feet or less.
.friday...south winds 5 to 10 knots. mostly cloudy. a chance of
light showers in the morning...then light showers likely and a
chance of thunderstorms in the afternoon. waves 2 feet or less.
.friday night...southwest winds 5 to 10 knots. partly cloudy. light
showers likely early in the evening. a chance of thunderstorms. a
chance of light showers by midnight. waves 2 feet or less.
.saturday...southwest winds 5 to 10 knots increasing to 10 to 15
knots early in the afternoon. partly sunny. a chance of light
showers. a chance of thunderstorms early in the afternoon. waves 2
feet or less.
.saturday night...west winds 10 to 15 knots becoming northwest 5 to
10 knots in the late evening and overnight. clear. a chance of
showers and thunderstorms early in the evening. waves 2 feet or
less.
.sunday...southwest winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon and evening. mostly sunny...then partly cloudy with
a chance of showers and thunderstorms in the evening. waves 2 feet
or less.
.monday...southwest winds 10 to 15 knots. showers and a chance of
thunderstorms. waves 2 feet or less.
.tuesday...northwest winds 15 to 20 knots. partly cloudy. showers
and a chance of thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 070148
glflh 
expires:202608071000;;744236

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 pm edt thu aug 6 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...periods of unsettled weather will continue over the
next few days. scattered showers and thunderstorms will remain
possible, as a frontal boundary hangs around southern michigan.
brief period of high pressure, 30.00 inches, fills in ahead of
the next cold front which tracks through this weekend.


lhz361-071000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
948 pm edt thu aug 6 2026

.rest of tonight...southeast winds 5 to 10 knots. waves 2 feet or
less. 
.friday...south winds 5 to 10 knots backing to the east late in
the afternoon. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots veering to the
south after midnight. a chance of showers. waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots becoming west 10 to
15 knots in the late morning and afternoon. a chance of showers
in the morning. waves 1 to 3 feet. 
.saturday night...west winds 10 to 15 knots early in the evening
becoming light and variable...then becoming southwest 5 to
10 knots after midnight. waves 1 to 3 feet. 
.sunday...southwest winds 5 to 10 knots veering to the west late
in the afternoon...then becoming light and variable late in the
evening. a chance of showers. a chance of thunderstorms late in
the morning. waves 2 feet or less. 
.monday...light and variable winds becoming southwest 5 to
10 knots . a chance of showers. waves 2 feet or less. 
.tuesday...northwest winds 5 to 10 knots backing to the west .
waves 2 feet or less. 


$$

fzus63 kdtx 070148
glflh 
expires:202608071000;;744237

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 pm edt thu aug 6 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...periods of unsettled weather will continue over the
next few days. scattered showers and thunderstorms will remain
possible, as a frontal boundary hangs around southern michigan.
brief period of high pressure, 30.00 inches, fills in ahead of
the next cold front which tracks through this weekend.


lhz362-363-071000-
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-
948 pm edt thu aug 6 2026

.rest of tonight...light and variable winds becoming southeast
5 to 10 knots after midnight. waves 2 feet or less. 
.friday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots by midnight...then decreasing to 5 to 10 knots
after midnight. waves 1 to 3 feet. 
.saturday...southwest winds 5 to 10 knots. a chance of showers in
the morning. waves 1 to 3 feet. 
.saturday night...north winds 5 to 10 knots backing to the west
after midnight. waves 2 to 4 feet subsiding to 1 to 3 feet in the
late evening and overnight. 
.sunday...southwest winds 5 to 10 knots in the morning becoming
south 10 to 15 knots...then decreasing to 5 to 10 knots late in
the afternoon becoming light and variable. a chance of showers
late in the morning. waves 1 to 3 feet. 
.monday...light and variable winds becoming southeast 5 to
10 knots . a chance of showers and thunderstorms. waves 2 feet or
less. 
.tuesday...northwest winds 5 to 10 knots becoming northwest by
midnight. waves 2 feet or less. 


$$

fzus63 kdtx 070148
glflh 
expires:202608071000;;744238

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 pm edt thu aug 6 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...periods of unsettled weather will continue over the
next few days. scattered showers and thunderstorms will remain
possible, as a frontal boundary hangs around southern michigan.
brief period of high pressure, 30.00 inches, fills in ahead of
the next cold front which tracks through this weekend.


lhz462>464-071000-
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-
948 pm edt thu aug 6 2026

.rest of tonight...light and variable winds. waves 2 feet or
less. 
.friday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots veering to the
south after midnight. a chance of showers. waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.saturday night...west winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots increasing to 10 to
15 knots late in the morning...then becoming south 5 to 10 knots
late in the afternoon. a chance of showers late in the afternoon.
waves 1 to 3 feet. 
.monday...southwest winds 5 to 10 knots. a chance of showers
early in the morning. a chance of thunderstorms. rain showers
likely . waves 2 feet or less. 
.tuesday...west winds 5 to 10 knots veering to the northwest
early in the evening...then becoming light and variable by
midnight. a chance of showers early in the morning. waves 2 feet
or less. 


$$

fzus63 kmkx 070212
glflm 
expires:202608070915;;745324

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
912 pm cdt thu aug 6 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...

light southerly winds tonight will increase by friday afternoon 
as a low pressure trough of 29.8 inches reaches lake superior. 
scattered showers and storms are possible friday night as an
associated cold front crosses lake michigan. west to northwest 
winds behind the front early saturday will quickly return to 
southerly by saturday evening ahead of the next approaching low 
pressure system. an unsettled weather pattern will set up over the
upper great lakes next week where weak waves of low pressure will
cross the region and produce rounds of thunderstorms at times.


lmz080-669-671-673-675-777-779-870-872-874-876-878-070915-
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-
912 pm cdt thu aug 6 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southeast winds 5 to 10 kt becoming south.
waves 1 ft or less. 
.friday...southwest winds 5 to 10 kt becoming south 15 to 25 kt.
waves 1 to 2 ft building to 2 to 4 ft. 
.friday night...south winds 10 to 20 kt becoming west. waves 2 to
4 ft. 
.saturday...northwest winds 10 to 20 kt becoming north. waves
2 to 4 ft. 
.saturday night...south winds 10 to 15 kt. waves 1 to 3 ft. 
.sunday...south winds 10 to 20 kt. chance of showers in the
morning, then chance of showers and thunderstorms in the
afternoon. waves 2 to 4 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest 10 to
15 kt. chance of showers and thunderstorms. waves 2 to 4 ft. 
.monday...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
showers likely with a chance of thunderstorms. waves 1 to 3 ft. 
.tuesday...northwest winds 10 to 15 kt increasing to 10 to 20 kt.
chance of showers. waves 1 to 3 ft.  

$$

fzus63 kmkx 070212
glflm 
expires:202608070915;;745323

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
912 pm cdt thu aug 6 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...

light southerly winds tonight will increase by friday afternoon 
as a low pressure trough of 29.8 inches reaches lake superior. 
scattered showers and storms are possible friday night as an
associated cold front crosses lake michigan. west to northwest 
winds behind the front early saturday will quickly return to 
southerly by saturday evening ahead of the next approaching low 
pressure system. an unsettled weather pattern will set up over the
upper great lakes next week where weak waves of low pressure will
cross the region and produce rounds of thunderstorms at times.


lmz261-362-364-366-563-565-567-868-070915-
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-
912 pm cdt thu aug 6 2026

sheboygan wi to pentwater mi north...

.rest of tonight...southeast winds 5 to 10 kt becoming south.
waves 1 ft or less. 
.friday...south winds 10 to 15 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.friday night...south winds 15 to 25 kt veering to west 10 to
20 kt. chance of showers. waves 3 to 5 ft. 
.saturday...northwest winds 10 to 20 kt becoming west. waves 2 to
4 ft. 
.saturday night...southwest winds 10 to 20 kt diminishing to
10 to 15 kt. waves 1 to 2 ft. 
.sunday...southwest winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday night...south winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers. waves 2 to 4 ft. 
.monday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
chance of showers and thunderstorms. waves 1 to 3 ft.
.tuesday...north winds 10 to 15 kt becoming west 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmqt 070201
glfls 
expires:202608070800;;744493

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 6 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...

lake superior is currently situated between a 29.5 inch low along 
the shore of hudson bay at the manitoba/ontario line and a 30.2 inch 
bermuda high. friday, a cold front brings 29.8 inch troughing across 
the lake before 29.9 inch ridging returns late friday night into 
saturday. while some weak 29.8 inch troughing could be seen over 
lake superior saturday night, weak 29.9 inch ridging settles once 
again over the lake sunday and monday, with a weak 29.8 inch trough 
potentially passing through sunday evening. the high pressure 
ridging could increase to 30.0 inches by tuesday. 




lsz162-070800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu aug 6 2026 /901 pm cdt thu aug 6 2026/

.rest of tonight...south winds 10 to 20 knots veering southwest
late. waves 1 to 3 feet. 
.friday...southwest winds 10 to 20 knots. a chance of showers and
thunderstorms. waves subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots becoming northwest 10 to
20 knots after midnight, then backing west late. waves calm to
2 feet. 
.saturday...west winds 10 to 20 knots backing southwest by mid
afternoon. waves building to 1 to 3 feet. 
.saturday night...west winds 5 to 15 knots. a slight chance of
showers. waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering west. waves calm
to 2 feet. 

$$

fzus63 kmqt 070201
glfls 
expires:202608070800;;744494

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 6 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...

lake superior is currently situated between a 29.5 inch low along 
the shore of hudson bay at the manitoba/ontario line and a 30.2 inch 
bermuda high. friday, a cold front brings 29.8 inch troughing across 
the lake before 29.9 inch ridging returns late friday night into 
saturday. while some weak 29.8 inch troughing could be seen over 
lake superior saturday night, weak 29.9 inch ridging settles once 
again over the lake sunday and monday, with a weak 29.8 inch trough 
potentially passing through sunday evening. the high pressure 
ridging could increase to 30.0 inches by tuesday. 




lsz263-070800-
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 thu aug 6 2026

.rest of tonight...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then becoming southwest 10 to 20 knots
late. waves 1 to 3 feet building to 2 to 4 feet. 
.friday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. a chance of showers and thunderstorms.
waves subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering northwest after
midnight, then backing west late. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. a slight chance of showers. waves
subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots becoming west less than
10 knots after midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 070201
glfls 
expires:202608070800;;744495

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 6 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...

lake superior is currently situated between a 29.5 inch low along 
the shore of hudson bay at the manitoba/ontario line and a 30.2 inch 
bermuda high. friday, a cold front brings 29.8 inch troughing across 
the lake before 29.9 inch ridging returns late friday night into 
saturday. while some weak 29.8 inch troughing could be seen over 
lake superior saturday night, weak 29.9 inch ridging settles once 
again over the lake sunday and monday, with a weak 29.8 inch trough 
potentially passing through sunday evening. the high pressure 
ridging could increase to 30.0 inches by tuesday. 




lsz264-070800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt thu aug 6 2026

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

$$

fzus63 kmqt 070201
glfls 
expires:202608070800;;744496

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 6 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...

lake superior is currently situated between a 29.5 inch low along 
the shore of hudson bay at the manitoba/ontario line and a 30.2 inch 
bermuda high. friday, a cold front brings 29.8 inch troughing across 
the lake before 29.9 inch ridging returns late friday night into 
saturday. while some weak 29.8 inch troughing could be seen over 
lake superior saturday night, weak 29.9 inch ridging settles once 
again over the lake sunday and monday, with a weak 29.8 inch trough 
potentially passing through sunday evening. the high pressure 
ridging could increase to 30.0 inches by tuesday. 




lsz265-070800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt thu aug 6 2026

.rest of tonight...south winds 15 to 25 knots diminishing to
10 to 20 knots late. waves 2 to 4 feet subsiding to calm to
2 feet. 
.friday...south winds 10 to 20 knots backing southeast in the
afternoon, then backing north late. showers likely and a chance
of thunderstorms by mid afternoon. waves calm to 2 feet. 
.friday night...southwest winds 10 to 20 knots veering west after
midnight. a chance of thunderstorms and a slight chance of
showers through midnight. waves calm to 2 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots. a slight chance
of showers after midnight. waves calm to 2 feet. 
.sunday...west winds 10 to 20 knots becoming northeast 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots backing west. waves calm
to 2 feet. 
.tuesday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 070201
glfls 
expires:202608070800;;744497

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 6 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...

lake superior is currently situated between a 29.5 inch low along 
the shore of hudson bay at the manitoba/ontario line and a 30.2 inch 
bermuda high. friday, a cold front brings 29.8 inch troughing across 
the lake before 29.9 inch ridging returns late friday night into 
saturday. while some weak 29.8 inch troughing could be seen over 
lake superior saturday night, weak 29.9 inch ridging settles once 
again over the lake sunday and monday, with a weak 29.8 inch trough 
potentially passing through sunday evening. the high pressure 
ridging could increase to 30.0 inches by tuesday. 




lsz266-070800-
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 thu aug 6 2026

.rest of tonight...south winds 15 to 25 knots. waves 2 to 4 feet
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.friday...south winds 10 to 20 knots. a chance of showers and
thunderstorms by mid afternoon. waves subsiding to calm to
2 feet. 
.friday night...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then becoming northwest 10 to 20 knots
late. showers likely and a chance of thunderstorms through
midnight, then a slight chance of showers after midnight. waves
calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. a slight chance of showers after
midnight. waves subsiding to calm to 2 feet. 
.sunday...west winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 070201
glfls 
expires:202608070800;;744498

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 6 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...

lake superior is currently situated between a 29.5 inch low along 
the shore of hudson bay at the manitoba/ontario line and a 30.2 inch 
bermuda high. friday, a cold front brings 29.8 inch troughing across 
the lake before 29.9 inch ridging returns late friday night into 
saturday. while some weak 29.8 inch troughing could be seen over 
lake superior saturday night, weak 29.9 inch ridging settles once 
again over the lake sunday and monday, with a weak 29.8 inch trough 
potentially passing through sunday evening. the high pressure 
ridging could increase to 30.0 inches by tuesday. 




lsz267-070800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt thu aug 6 2026

.rest of tonight...south winds 10 to 20 knots. waves calm to
2 feet building to 1 to 3 feet. 
.friday...south winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.friday night...south winds 10 to 20 knots veering southwest
after midnight, then veering northwest late. showers through
midnight. a chance of thunderstorms. a chance of showers after
midnight. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming northwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$