fzus61 kbuf 010202
glflo 
expires:202609010900;;694471

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon aug 31 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 frontal boundary will remain stalled near the lake 
today through tuesday before moving northeast across the lake 
tuesday night as a warm front. a 29.8 inch low will then move from 
northwest ontario province tuesday night to western quebec by 
wednesday night before reaching northern new england and the 
canadian maritimes thursday night. a trailing cold front will move 
south across the lake thursday.


loz062-010900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt mon aug 31 2026

.overnight...southeast winds less than 10 knots becoming
south. patchy fog. showers with a chance of thunderstorms. waves
1 foot or less. 
.tuesday...south winds 10 knots or less becoming east. patchy fog
early. showers likely with a chance of thunderstorms early. waves
1 foot or less. 
.tuesday night...southeast winds 10 knots or less. patchy fog
overnight. showers likely overnight. waves 1 foot or less. 
.wednesday...south winds 5 to 10 knots. a chance of showers in
the morning, then showers likely with a chance of thunderstorms
in the afternoon. waves 1 foot or less. 
.wednesday night...southeast winds 5 to 10 knots becoming
southwest. showers with a chance of thunderstorms. waves 1 foot
or less. 
.thursday...west winds 5 to 10 knots becoming northwest. showers
likely during the day, then a chance of showers thursday night.
waves 1 foot or less. 
.friday...northwest winds 10 knots or less becoming north. waves
1 foot or less. 
.saturday...north winds 5 to 10 knots becoming northeast. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 010202
glflo 
expires:202609010900;;694472

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon aug 31 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 frontal boundary will remain stalled near the lake 
today through tuesday before moving northeast across the lake 
tuesday night as a warm front. a 29.8 inch low will then move from 
northwest ontario province tuesday night to western quebec by 
wednesday night before reaching northern new england and the 
canadian maritimes thursday night. a trailing cold front will move 
south across the lake thursday.


loz063>065-010900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt mon aug 31 2026

.overnight...south winds less than 10 knots. showers with a
chance of thunderstorms. patchy fog. waves 1 foot
or less. 
.tuesday...south winds 10 knots or less becoming north. patchy
fog early. showers with a chance of thunderstorms early, then a
chance of showers late in the morning. waves 1 foot or less. 
.tuesday night...northeast winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.wednesday...southeast winds 5 to 15 knots. a chance of showers
in the morning, then showers likely with a chance of
thunderstorms in the afternoon. waves 2 feet or less. 
.wednesday night...southeast winds 5 to 15 knots becoming
southwest. showers with a chance of thunderstorms. waves 2 feet
or less. 
.thursday...west winds 5 to 10 knots becoming northwest. showers
with a chance of thunderstorms during the day. waves 1 to 2 feet.
.friday...northwest winds 5 to 15 knots becoming north. waves
2 feet or less. 
.saturday...north winds 10 to 15 knots becoming northeast. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010117
glfle 
expires:202609010815;;693577

open lake forecast for lake erie
national weather service cleveland oh
917 pm edt mon aug 31 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 warm front will settle north of lake erie as high pressure 
30.10 inches resides just to the south. low pressure 29.70 inches
will move east across the upper great lakes on wednesday, 
extending a cold front through the area on thursday. this front
will linger south of lake erie on friday as high pressure ridge 
30.10 inches build in from the north.


lez162-163-010815-
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-
917 pm edt mon aug 31 2026

.rest of tonight...southwest winds around 10 knots. a slight
chance of showers and thunderstorms late. waves 1 to 2 feet. 
.tuesday...southwest winds 5 to 10 knots. a slight chance of
showers early. waves 1 foot or less. 
.tuesday night...southwest winds 5 to 10 knots. waves 1 foot or
less. 
.wednesday...southwest winds 10 to 15 knots. waves 2 feet or
less. 
.wednesday night...southwest winds around 10 knots. a chance of
showers and thunderstorms. waves 1 to 2 feet. 
.thursday...west winds 5 to 10 knots becoming northeast. a chance
of showers and thunderstorms. waves 1 foot or less. 
.friday...northeast winds 5 to 10 knots. waves 1 foot or less. 
.saturday...northeast winds 10 to 15 knots. waves 2 feet or less.

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010117
glfle 
expires:202609010815;;693578

open lake forecast for lake erie
national weather service cleveland oh
917 pm edt mon aug 31 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 warm front will settle north of lake erie as high pressure 
30.10 inches resides just to the south. low pressure 29.70 inches
will move east across the upper great lakes on wednesday, 
extending a cold front through the area on thursday. this front
will linger south of lake erie on friday as high pressure ridge 
30.10 inches build in from the north.


lez164>166-010815-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-
917 pm edt mon aug 31 2026

.rest of tonight...southwest winds 10 to 15 knots. a slight
chance of showers and thunderstorms, then a chance of showers and
thunderstorms late. waves 1 to 3 feet. 
.tuesday...southwest winds 5 to 15 knots becoming west. a slight
chance of showers and thunderstorms early, then a slight chance
of showers late in the morning. waves 1 to 3 feet. 
.tuesday night...southwest winds 5 to 10 knots. a chance of
showers and thunderstorms overnight. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots. waves 1 to 2 feet. 
.wednesday night...southwest winds 10 to 15 knots. a chance of
showers and thunderstorms. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 10 knots becoming northeast. a
chance of showers and thunderstorms during the day, then showers
likely with a chance of thunderstorms thursday night. waves 1 to
3 feet subsiding to 1 foot or less. 
.friday...northeast winds 5 to 10 knots. a chance of showers
during the day. waves 2 feet or less. 
.saturday...northeast winds 10 to 15 knots becoming east 15 to
20 knots. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010117
glfle 
expires:202609010815;;693579

open lake forecast for lake erie
national weather service cleveland oh
917 pm edt mon aug 31 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 warm front will settle north of lake erie as high pressure 
30.10 inches resides just to the south. low pressure 29.70 inches
will move east across the upper great lakes on wednesday, 
extending a cold front through the area on thursday. this front
will linger south of lake erie on friday as high pressure ridge 
30.10 inches build in from the north.


lez061-167>169-010815-
ripley to buffalo ny extending from 5nm 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-
917 pm edt mon aug 31 2026

.rest of tonight...south winds 10 to 15 knots becoming southwest.
a chance of showers with a slight chance of thunderstorms late
this evening, then a slight chance of showers and thunderstorms
after midnight. a chance of showers and thunderstorms late. waves
1 to 3 feet. 
.tuesday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms early. waves 1 to 3 feet. 
.tuesday night...southwest winds 5 to 10 knots. a chance of
showers and thunderstorms overnight. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms in the morning. waves 1 to 2 feet. 
.wednesday night...southwest winds 10 to 15 knots. a chance of
showers and thunderstorms in the evening, then showers and
thunderstorms likely overnight. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 10 knots becoming north. a
chance of showers and thunderstorms. waves 1 to 3 feet. 
.friday...north winds 10 knots or less becoming northeast. waves
2 feet or less. 
.saturday...northeast winds 10 to 15 knots increasing to 15 to
20 knots. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 010138
glfsc 
expires:202609010945;;694005

lake st clair forecast
national weather service detroit/pontiac mi
938 pm edt mon aug 31 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 now over southern manitoba slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.


lcz460-010945-
lake st clair-
938 pm edt mon aug 31 2026

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

$$

fzus63 kdtx 010138
glflh 
expires:202609010945;;693960

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 pm edt mon aug 31 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 now over southern manitoba slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.


lhz462>464-010945-
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-
938 pm edt mon aug 31 2026

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


$$

fzus63 kdtx 010138
glflh 
expires:202609010945;;693958

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 pm edt mon aug 31 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 now over southern manitoba slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.


lhz361-010945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
938 pm edt mon aug 31 2026

.rest of tonight...light and variable winds. waves 2 feet or
less. 
.tuesday...light and variable winds. waves 2 feet or less. 
.tuesday night...southeast winds 5 to 10 knots. waves 2 feet or
less. 
.wednesday...south winds 5 to 10 knots veering to the west in the
late morning and afternoon. a chance of showers. waves 2 feet or
less. 
.wednesday night...west winds 5 to 10 knots early in the evening
becoming light and variable...then becoming west 5 to 10 knots
after midnight. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.friday...light and variable winds. waves 2 feet or less. 
.saturday...northeast winds 5 to 10 knots until afternoon
becoming light and variable. waves 2 feet or less. 


$$

fzus63 kdtx 010138
glflh 
expires:202609010945;;693959

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 pm edt mon aug 31 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 now over southern manitoba slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.


lhz362-363-010945-
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-
938 pm edt mon aug 31 2026

.rest of tonight...southeast winds 5 to 10 knots by midnight
becoming light and variable. waves 1 to 3 feet. 
.tuesday...light and variable winds. waves 2 feet or less. 
.tuesday night...southeast winds 5 to 10 knots. waves 2 feet or
less. 
.wednesday...south winds 5 to 10 knots until late afternoon
becoming light and variable. a chance of showers in the morning...
then showers likely and a chance of thunderstorms in the
afternoon. waves 2 feet or less. 
.wednesday night...light and variable winds. showers likely and a
chance of thunderstorms in the evening. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots becoming light and
variable. waves 2 feet or less. 
.friday...light and variable winds. waves 2 feet or less. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 010216
glflm 
expires:202609010930;;695299

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 pm cdt mon aug 31 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...

29.5 inch low pressure is located near the ontario-manitoba 
border late this evening, and is forecast to continue eastward 
toward the southern hudson bay by early wednesday morning. the low
will make its eastward progression as it fills to near 29.8 inches,
resulting in light winds during overnight periods and southerly 
gusts between 10-15 knots during the daytime hours. the light 
overnight winds, combined with a lingering humid air mass, will 
support areas of fog development across lake michigan both tonight
and tuesday night. whether fog will become dense remains 
uncertain, with trends being monitored for marine dense fog 
advisories during each overnight period. off and on thunderstorms 
remain forecast through wednesday morning as a cold front lingers 
just to the north of the open waters. widespread severe weather 
isn't expected in any thunderstorm activity, though an isolated 
stronger cell with hail and gusty winds can't be entirely ruled 
out. 

winds will shift east-northeasterly through the second half of the 
week as 30.1 inch high pressure builds over the hudson bay and 
broad, 29.6 inch low pressure moves into the northern great 
plains. an unsettled pattern featuring multiple additional 
thunderstorm chances will continue through at least friday night. 
similar to earlier week storms, widespread severe weather isn't 
anticipated, though isolated stronger storms with hail and gusty 
winds are possible.


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-
916 pm cdt mon aug 31 2026

sheboygan wi to pentwater mi north...

.rest of tonight...southwest winds 10 to 15 kt veering to
northwest. chance of showers and slight chance of thunderstorms
late this evening. patchy fog. waves 3 to 5 ft subsiding to 1 to
3 ft. 
.tuesday...northeast winds 5 to 10 kt veering to south late in
the morning, then increasing to 10 to 15 kt early in the
afternoon becoming south 10 to 15 kt late. patchy fog in the
morning. waves 1 to 3 ft. 
.tuesday night...south winds 10 to 15 kt veering to west 5 to
10 kt. waves 1 to 2 ft. 
.wednesday...northwest winds 10 to 15 kt becoming north. chance
of showers. waves 1 to 2 ft. 
.wednesday night...northeast winds 5 to 10 kt. waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
chance of showers in the afternoon. waves 1 ft or less. 
.thursday night...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. chance of showers. waves 1 ft or less. 
.friday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 ft or less. 
.saturday...east winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 010216
glflm 
expires:202609010930;;695300

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 pm cdt mon aug 31 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...

29.5 inch low pressure is located near the ontario-manitoba 
border late this evening, and is forecast to continue eastward 
toward the southern hudson bay by early wednesday morning. the low
will make its eastward progression as it fills to near 29.8 inches,
resulting in light winds during overnight periods and southerly 
gusts between 10-15 knots during the daytime hours. the light 
overnight winds, combined with a lingering humid air mass, will 
support areas of fog development across lake michigan both tonight
and tuesday night. whether fog will become dense remains 
uncertain, with trends being monitored for marine dense fog 
advisories during each overnight period. off and on thunderstorms 
remain forecast through wednesday morning as a cold front lingers 
just to the north of the open waters. widespread severe weather 
isn't expected in any thunderstorm activity, though an isolated 
stronger cell with hail and gusty winds can't be entirely ruled 
out. 

winds will shift east-northeasterly through the second half of the 
week as 30.1 inch high pressure builds over the hudson bay and 
broad, 29.6 inch low pressure moves into the northern great 
plains. an unsettled pattern featuring multiple additional 
thunderstorm chances will continue through at least friday night. 
similar to earlier week storms, widespread severe weather isn't 
anticipated, though isolated stronger storms with hail and gusty 
winds are possible.


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-
916 pm cdt mon aug 31 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southwest winds 10 to 15 kt diminishing to
5 to 10 kt. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.tuesday...west winds 5 to 10 kt becoming south 10 to 15 kt.
patchy fog in the morning. waves 1 to 3 ft. 
.tuesday night...southwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.wednesday...south winds 10 to 15 kt. waves 1 to 2 ft. 
.wednesday night...northwest winds 10 to 15 kt becoming north.
chance of showers overnight. waves 1 to 3 ft. 
.thursday...northeast winds 5 to 10 kt becoming north 10 to
15 kt. chance of showers and thunderstorms in the morning. waves
1 to 2 ft. 
.thursday night...northeast winds 10 to 15 kt becoming east 5 to
10 kt. chance of showers and thunderstorms. waves 1 to 2 ft. 
.friday...east winds 10 to 15 kt becoming northeast. chance of
showers. waves 1 to 2 ft. 
.saturday...east winds 10 to 15 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 010201
glfls 
expires:202609010800;;694411

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon aug 31 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 29.5 inch low continues to move across manitoba and into ontario 
tonight, bringing broad 29.9 inch troughing over the upper great 
lakes. weak troughing remains over the lake until ridging of around 
29.9 inches builds over the lake on wednesday and strengthens to 
30.0 inches through friday. ridging will continue to build to 30.2 
inches by sunday morning as a high pressure center over eastern 
canada moves southward over the weekend.




lsz267-010800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt mon aug 31 2026

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

$$

fzus63 kmqt 010201
glfls 
expires:202609010800;;694409

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon aug 31 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 29.5 inch low continues to move across manitoba and into ontario 
tonight, bringing broad 29.9 inch troughing over the upper great 
lakes. weak troughing remains over the lake until ridging of around 
29.9 inches builds over the lake on wednesday and strengthens to 
30.0 inches through friday. ridging will continue to build to 30.2 
inches by sunday morning as a high pressure center over eastern 
canada moves southward over the weekend.




lsz265-010800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt mon aug 31 2026

.rest of tonight...west winds 10 to 20 knots becoming southwest
5 to 15 knots late. patchy fog by midnight, then areas of dense
fog after midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots veering west late. patchy
dense fog through early afternoon. waves calm to 2 feet. 
.tuesday night...west winds 10 to 20 knots. waves calm to 2 feet.
.wednesday...west winds 5 to 15 knots veering northeast by mid
afternoon. a slight chance of showers. waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...north winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 10 to 20 knots. waves calm to 2 feet. 
.saturday...east winds 15 to 25 knots becoming south 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202609010800;;694410

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon aug 31 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 29.5 inch low continues to move across manitoba and into ontario 
tonight, bringing broad 29.9 inch troughing over the upper great 
lakes. weak troughing remains over the lake until ridging of around 
29.9 inches builds over the lake on wednesday and strengthens to 
30.0 inches through friday. ridging will continue to build to 30.2 
inches by sunday morning as a high pressure center over eastern 
canada moves southward over the weekend.




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-
1000 pm edt mon aug 31 2026

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

$$

fzus63 kmqt 010201
glfls 
expires:202609010800;;694406

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon aug 31 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 29.5 inch low continues to move across manitoba and into ontario 
tonight, bringing broad 29.9 inch troughing over the upper great 
lakes. weak troughing remains over the lake until ridging of around 
29.9 inches builds over the lake on wednesday and strengthens to 
30.0 inches through friday. ridging will continue to build to 30.2 
inches by sunday morning as a high pressure center over eastern 
canada moves southward over the weekend.




lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt mon aug 31 2026 /900 pm cdt mon aug 31 2026/

.rest of tonight...southwest winds 5 to 15 knots backing south
after midnight, then veering southwest late. areas of dense fog.
waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots increasing to 15 to
25 knots in the afternoon, then veering west late. waves building
to 1 to 3 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight, then backing west late. waves subsiding to calm to
2 feet. 
.wednesday...northwest winds less than 10 knots becoming south
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.thursday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a chance of showers. waves
subsiding to calm to 2 feet. 
.friday...northeast winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.saturday...northeast winds 10 to 20 knots. waves calm to 2 feet.

$$

fzus63 kmqt 010201
glfls 
expires:202609010800;;694407

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon aug 31 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 29.5 inch low continues to move across manitoba and into ontario 
tonight, bringing broad 29.9 inch troughing over the upper great 
lakes. weak troughing remains over the lake until ridging of around 
29.9 inches builds over the lake on wednesday and strengthens to 
30.0 inches through friday. ridging will continue to build to 30.2 
inches by sunday morning as a high pressure center over eastern 
canada moves southward over the weekend.




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-
1000 pm edt mon aug 31 2026

.rest of tonight...southwest winds 5 to 15 knots. areas of dense
fog. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then veering west late. patchy dense
fog through early afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.tuesday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots increasing to 15 to 25 knots
by mid afternoon. waves calm to 2 feet. 
.thursday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.friday...east winds 15 to 25 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.saturday...east winds 10 to 20 knots veering south. waves calm
to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202609010800;;694408

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon aug 31 2026

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 29.5 inch low continues to move across manitoba and into ontario 
tonight, bringing broad 29.9 inch troughing over the upper great 
lakes. weak troughing remains over the lake until ridging of around 
29.9 inches builds over the lake on wednesday and strengthens to 
30.0 inches through friday. ridging will continue to build to 30.2 
inches by sunday morning as a high pressure center over eastern 
canada moves southward over the weekend.




lsz264-010800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt mon aug 31 2026

.rest of tonight...west winds 5 to 15 knots backing southwest
late. areas of dense fog. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. patchy dense fog through early
afternoon. waves building to 1 to 3 feet. 
.tuesday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots becoming west less
than 10 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...west winds less than 10 knots veering north
after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 10 to 20 knots. waves calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots. waves calm to 2 feet.

$$