fzus61 kbuf 220202
glflo 
expires:202609220900;;847381

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon sep 21 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...an expansive 30.6 inch high will remain centered from 
eastern ontario province to southern quebec through saturday while 
gradually weakening to 30.3 inches late this week. an elongated 29.6 
inch low well offshore of the east coast friday is forecast to 
strengthen to 29.2 inches as it moves to just off the southern new 
england coast saturday night through sunday.


loz063>065-220900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt mon sep 21 2026

.overnight...northeast winds 15 to 20 knots becoming east.
waves 3 to 6 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 
.tuesday...east winds 15 to 25 knots becoming northeast. waves
4 to 7 feet subsiding to 3 to 6 feet. waves occasionally around
9 feet. 
.tuesday night...northeast winds 15 to 20 knots becoming east.
waves 3 to 6 feet. 
.wednesday...east winds 15 to 20 knots becoming northeast. waves
3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday night...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet. 
.thursday...east winds 10 to 15 knots becoming northeast. waves
1 to 3 feet. 
.friday...northeast winds 10 to 15 knots becoming north 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 220202
glflo 
expires:202609220900;;847380

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon sep 21 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...an expansive 30.6 inch high will remain centered from 
eastern ontario province to southern quebec through saturday while 
gradually weakening to 30.3 inches late this week. an elongated 29.6 
inch low well offshore of the east coast friday is forecast to 
strengthen to 29.2 inches as it moves to just off the southern new 
england coast saturday night through sunday.


loz062-220900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt mon sep 21 2026

.overnight...northeast winds 15 to 20 knots. waves 3 to
6 feet building to 5 to 7 feet. waves occasionally around 9 feet.
.tuesday...northeast winds 20 to 25 knots becoming east. waves
5 to 8 feet. waves occasionally around 10 feet. 
.tuesday night...east winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.wednesday...east winds 15 to 20 knots. waves 3 to 6 feet. 
.wednesday night...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.thursday...east winds 10 to 15 knots becoming northeast. waves
1 to 3 feet. 
.friday...northeast winds 5 to 15 knots becoming north. waves
1 to 3 feet. 
.saturday...north winds 5 to 15 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 220120
glfle 
expires:202609220815;;846319

open lake forecast for lake erie
national weather service cleveland oh
920 pm edt mon sep 21 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 persist across lake erie
through wednesday. high pressure 30.20 inches will build south
across the great lakes thursday through the weekend.


lez164>168-220815-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
920 pm edt mon sep 21 2026

.rest of tonight...northeast winds to 30 knots becoming east. a
chance of showers, then a slight chance of showers late. waves
6 to 9 feet. waves occasionally around 11 feet. 
.tuesday...east winds to 30 knots. a slight chance of showers. a
slight chance of waterspouts in the afternoon. waves 6 to
10 feet. waves occasionally around 13 feet. 
.tuesday night...east winds to 30 knots diminishing to 15 to
25 knots. a chance of showers. waves 6 to 10 feet subsiding to
5 to 8 feet. waves occasionally around 13 feet. 
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 4 to 7 feet subsiding to 3 to 6 feet. waves occasionally
around 9 feet. 
.wednesday night...east winds 15 to 25 knots. a chance of showers
in the evening. waves 3 to 6 feet. 
.thursday...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet building to 3 to 5 feet, then
subsiding to 2 to 4 feet. 
.friday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 220120
glfle 
expires:202609220815;;846318

open lake forecast for lake erie
national weather service cleveland oh
920 pm edt mon sep 21 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 persist across lake erie
through wednesday. high pressure 30.20 inches will build south
across the great lakes thursday through the weekend.


lez162-163-220815-
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-
920 pm edt mon sep 21 2026

.rest of tonight...northeast winds 20 to 25 knots. a slight
chance of showers late this evening, then a chance of showers
after midnight. waves 5 to 8 feet. waves occasionally around
10 feet. 
.tuesday...northeast winds to 30 knots. a chance of showers
early, then a slight chance of showers from late morning on. a
slight chance of waterspouts late. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.tuesday night...east winds to 30 knots. a chance of showers in
the evening, then showers likely overnight. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.wednesday...east winds 20 to 25 knots. showers likely. waves
3 to 6 feet. 
.wednesday night...east winds 15 to 20 knots. showers likely in
the evening. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.thursday...east winds 15 to 20 knots becoming northeast 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northeast winds around 10 knots. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 

$$

fzus61 kcle 220120
glfle 
expires:202609220815;;846320

open lake forecast for lake erie
national weather service cleveland oh
920 pm edt mon sep 21 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 persist across lake erie
through wednesday. high pressure 30.20 inches will build south
across the great lakes thursday through the weekend.


lez061-169-220815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
920 pm edt mon sep 21 2026

.rest of tonight...northeast winds 15 to 25 knots becoming east.
a slight chance of showers late this evening. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.tuesday...east winds 15 to 25 knots becoming northeast. waves
3 to 6 feet. 
.tuesday night...east winds 15 to 25 knots. waves 3 to 6 feet
building to 4 to 7 feet, then subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.wednesday...east winds 15 to 20 knots. waves 2 to 4 feet. 
.wednesday night...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.friday...northeast winds 5 to 15 knots. waves 2 feet or less. 
.saturday...north winds 5 to 10 knots becoming northeast. waves
2 feet or less. 

$$

fzus63 kdtx 220159
glfsc 
expires:202609221000;;847270

lake st clair forecast
national weather service detroit/pontiac mi
959 pm edt mon sep 21 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...high pressure, 30.40 inches, lingers over ontario,
building southeastward early this week. this leads to prolonged
moderate northeast winds over the central great lakes with mainly
dry conditions. sporadic light shower chances exist over lake st.
clair and western erie tuesday night. a weak low pressure system 
should emerge over the northern portion of the ohio valley on 
wednesday, and could lead to slightly broader coverage of showers 
for the south-central great lakes on wednesday.


lcz460-221000-
lake st clair-
959 pm edt mon sep 21 2026

...small craft advisory in effect through wednesday evening...

.rest of tonight...northeast winds 20 to 25 knots. partly cloudy.
waves 2 to 4 feet.
.tuesday...northeast winds 20 to 25 knots diminishing to 15 to 20
knots in the afternoon. partly sunny. waves 2 to 4 feet subsiding to
1 to 3 feet in the afternoon.
.tuesday night...northeast winds to 30 knots with gusts to 35 knot
gales. mostly cloudy. waves 3 to 5 feet. waves occasionally around 7
feet.  a gale warning may be needed.
.wednesday...east winds 20 to 25 knots diminishing to 15 to 20 knots
early in the afternoon. mostly cloudy with a chance of light
showers. waves 2 to 4 feet.
.wednesday night...east winds 20 to 25 knots diminishing to 15 to 20
knots after midnight. partly cloudy. a chance of light showers early
in the evening. waves 2 to 4 feet subsiding to 1 to 3 feet after
midnight.
.thursday...east winds 10 to 15 knots. mostly sunny in the morning
becoming clear. waves 2 feet or less.
.friday...northeast winds 10 to 15 knots. mostly clear. waves 2 feet
or less.
.saturday...northeast winds 5 to 10 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 220159
glflh 
expires:202609221000;;847266

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 pm edt mon sep 21 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...high pressure, 30.40 inches, lingers over ontario,
building southeastward early this week. this leads to prolonged
moderate northeast winds over the central great lakes with mainly
dry conditions. sporadic light shower chances exist over lake st.
clair and western erie tuesday night. a weak low pressure system 
should emerge over the northern portion of the ohio valley on 
wednesday, and could lead to slightly broader coverage of showers 
for the south-central great lakes on wednesday.


lhz361-221000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
959 pm edt mon sep 21 2026

.rest of tonight...east winds 10 to 15 knots increasing to 15 to
20 knots early in the morning. waves 1 to 3 feet building to 2 to
4 feet after midnight. 
.tuesday...east winds 15 to 20 knots decreasing to 10 to 15 knots
in the afternoon. waves 2 to 4 feet. 
.tuesday night...east winds 5 to 10 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet in the late
evening and overnight. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. waves 3 to 5 feet. 
.wednesday night...east winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight. 
.thursday...southeast winds 5 to 10 knots in the morning
increasing to 10 to 15 knots...then becoming east 5 to 10 knots
late in the afternoon becoming light and variable. waves 1 to
3 feet. 
.friday...light and variable winds. waves 2 feet or less. 
.saturday...light and variable winds. waves 2 feet or less. 


$$

fzus63 kdtx 220159
glflh 
expires:202609221000;;847267

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 pm edt mon sep 21 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...high pressure, 30.40 inches, lingers over ontario,
building southeastward early this week. this leads to prolonged
moderate northeast winds over the central great lakes with mainly
dry conditions. sporadic light shower chances exist over lake st.
clair and western erie tuesday night. a weak low pressure system 
should emerge over the northern portion of the ohio valley on 
wednesday, and could lead to slightly broader coverage of showers 
for the south-central great lakes on wednesday.


lhz362-363-221000-
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-
959 pm edt mon sep 21 2026

.rest of tonight...northeast winds 15 to 20 knots. waves 3 to
5 feet. 
.tuesday...northeast winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.tuesday night...east winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. waves 3 to 5 feet. 
.wednesday night...northeast winds 15 to 20 knots becoming east
10 to 15 knots in the late evening and overnight. waves 3 to
5 feet. 
.thursday...east winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then becoming east 5 to 10 knots late in
the afternoon. waves 1 to 3 feet. 
.friday...light and variable winds becoming northeast 5 to
10 knots. waves 2 feet or less. 
.saturday...north winds 5 to 10 knots until afternoon becoming
light and variable. waves 2 feet or less. 


$$

fzus63 kdtx 220159
glflh 
expires:202609221000;;847268

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 pm edt mon sep 21 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...high pressure, 30.40 inches, lingers over ontario,
building southeastward early this week. this leads to prolonged
moderate northeast winds over the central great lakes with mainly
dry conditions. sporadic light shower chances exist over lake st.
clair and western erie tuesday night. a weak low pressure system 
should emerge over the northern portion of the ohio valley on 
wednesday, and could lead to slightly broader coverage of showers 
for the south-central great lakes on wednesday.


lhz462>464-221000-
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-
959 pm edt mon sep 21 2026

.rest of tonight...northeast winds 15 to 20 knots. waves 3 to
5 feet. 
.tuesday...northeast winds 15 to 20 knots. waves 3 to 5 feet. 
.tuesday night...east winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. waves 3 to 5 feet. 
.wednesday night...east winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. waves 3 to 5 feet. 
.thursday...east winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then becoming east 5 to 10 knots late in
the afternoon. waves 1 to 3 feet. 
.friday...east winds 5 to 10 knots becoming north 10 to 15 knots
early in the evening...then becoming northeast 5 to 10 knots by
midnight. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 220149
glflm 
expires:202609220915;;847200

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
849 pm cdt mon sep 21 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...

high pressure around 30.4 inches will meander north of the great 
lakes around the ontario/quebec border tonight. this high 
pressure will strengthen to around 30.7 inches and largely remain
in place through midweek. gusty east-northeast winds are expected
during this time. then winds look to diminish and turn 
southeasterly toward the end of the week, as the high pressure 
system slowly weakens and moves farther east.


lmz080-669-671-673-675-777-779-870-872-874-876-878-220915-
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-
849 pm cdt mon sep 21 2026

sheboygan wi to pentwater mi south...

.rest of tonight...northeast winds 15 to 25 kt becoming east
10 to 20 kt. chance of showers through early evening. waves 4 to
6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to
10 ft. 
.tuesday...east winds 15 to 25 kt becoming northeast. slight
chance of showers in the afternoon. waves 4 to 7 ft occasionally
to 9 ft. 
.tuesday night...east winds 15 to 25 kt. waves 4 to 7 ft
occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft.
.wednesday...east winds 15 to 25 kt becoming northeast. waves
4 to 7 ft occasionally to 9 ft. 
.wednesday night...east winds 10 to 20 kt. waves 3 to 5 ft. 
.thursday...east winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 2 to 4 ft. 
.thursday night...east winds 10 to 15 kt becoming southeast.
waves 1 to 3 ft. 
.friday...east winds 10 to 15 kt diminishing to 5 to 10 kt. waves
1 to 3 ft. 
.saturday...southeast winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 220149
glflm 
expires:202609220915;;847199

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
849 pm cdt mon sep 21 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...

high pressure around 30.4 inches will meander north of the great 
lakes around the ontario/quebec border tonight. this high 
pressure will strengthen to around 30.7 inches and largely remain
in place through midweek. gusty east-northeast winds are expected
during this time. then winds look to diminish and turn 
southeasterly toward the end of the week, as the high pressure 
system slowly weakens and moves farther east.


lmz261-362-364-366-563-565-567-868-220915-
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-
849 pm cdt mon sep 21 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northeast winds 15 to 25 kt becoming east
10 to 20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tuesday night...east winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...east winds 10 to 20 kt becoming northeast 15 to
25 kt. waves 2 to 4 ft. 
.wednesday night...east winds 15 to 25 kt becoming southeast
10 to 20 kt. waves 2 to 4 ft. 
.thursday...southeast winds 10 to 15 kt becoming east 10 to
20 kt. waves 1 to 3 ft. 
.thursday night...east winds 10 to 20 kt becoming southeast 10 to
15 kt. waves 1 to 2 ft. 
.friday...southeast winds 5 to 10 kt becoming east. waves 1 to
2 ft. 
.saturday...southeast winds 5 to 10 kt becoming south. waves 1 to
2 ft.  

$$

fzus63 kmqt 220201
glfls 
expires:202609220800;;847347

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon sep 21 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...

30.4 inch high pressure shits into quebec tonight. the high slowly 
builds to 30.5 inches over quebec by midday tuesday, trailing a 30.4 
inch ridge over lake superior while mainly easterly surface winds 
persist. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, winds gradually veer through midweek, 
becoming southerly thursday. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz162-220800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt mon sep 21 2026 /901 pm cdt mon sep 21 2026/

.rest of tonight...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves 1 to 3 feet subsiding to calm to
2 feet. 
.tuesday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then becoming northeast 15 to 25 knots late.
waves building to 2 to 4 feet. 
.tuesday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering southeast late. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.wednesday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 10 to 20 knots veering south after
midnight. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.thursday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots becoming south less
than 10 knots after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots veering south. a chance
of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 220201
glfls 
expires:202609220800;;847348

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon sep 21 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...

30.4 inch high pressure shits into quebec tonight. the high slowly 
builds to 30.5 inches over quebec by midday tuesday, trailing a 30.4 
inch ridge over lake superior while mainly easterly surface winds 
persist. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, winds gradually veer through midweek, 
becoming southerly thursday. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz263-220800-
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 mon sep 21 2026

.rest of tonight...east winds 5 to 15 knots. waves 1 to 3 feet
subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots increasing to 10 to 20 knots
late. waves calm to 2 feet. 
.tuesday night...east winds 10 to 20 knots becoming southeast
5 to 15 knots after midnight. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 10 to 20 knots veering south
after midnight. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.thursday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots backing southeast. waves calm
to 2 feet. 
.saturday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 220201
glfls 
expires:202609220800;;847349

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon sep 21 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...

30.4 inch high pressure shits into quebec tonight. the high slowly 
builds to 30.5 inches over quebec by midday tuesday, trailing a 30.4 
inch ridge over lake superior while mainly easterly surface winds 
persist. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, winds gradually veer through midweek, 
becoming southerly thursday. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz264-220800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt mon sep 21 2026

.rest of tonight...east winds 5 to 15 knots diminishing to less
than 10 knots late. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.friday...south winds less than 10 knots becoming southeast 5 to
15 knots. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 220201
glfls 
expires:202609220800;;847350

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon sep 21 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...

30.4 inch high pressure shits into quebec tonight. the high slowly 
builds to 30.5 inches over quebec by midday tuesday, trailing a 30.4 
inch ridge over lake superior while mainly easterly surface winds 
persist. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, winds gradually veer through midweek, 
becoming southerly thursday. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz265-220800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt mon sep 21 2026

.rest of tonight...east winds 10 to 20 knots. waves calm to
2 feet. 
.tuesday...east winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...east winds 10 to 20 knots veering southeast
after midnight. waves calm to 2 feet. 
.wednesday...southeast winds 10 to 20 knots becoming east 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.wednesday night...southeast winds 15 to 25 knots becoming south
10 to 20 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.thursday...south winds 10 to 20 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.thursday night...south winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.friday...south 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 220201
glfls 
expires:202609220800;;847351

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon sep 21 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...

30.4 inch high pressure shits into quebec tonight. the high slowly 
builds to 30.5 inches over quebec by midday tuesday, trailing a 30.4 
inch ridge over lake superior while mainly easterly surface winds 
persist. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, winds gradually veer through midweek, 
becoming southerly thursday. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz266-220800-
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 mon sep 21 2026

.rest of tonight...northeast winds 5 to 15 knots veering east
late. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots increasing to 10 to 20 knots
late. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering southeast late. waves calm
to 2 feet. 
.wednesday...southeast winds 10 to 20 knots backing east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 10 to 20 knots veering south
after midnight. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.thursday...south winds 10 to 20 knots becoming southeast 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...south winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.friday...south 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 220201
glfls 
expires:202609220800;;847352

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon sep 21 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...

30.4 inch high pressure shits into quebec tonight. the high slowly 
builds to 30.5 inches over quebec by midday tuesday, trailing a 30.4 
inch ridge over lake superior while mainly easterly surface winds 
persist. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, winds gradually veer through midweek, 
becoming southerly thursday. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz267-220800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt mon sep 21 2026

.rest of tonight...northeast winds 10 to 20 knots veering east
after midnight. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then backing northeast late. waves calm to
2 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.wednesday...southeast winds 10 to 20 knots backing east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...southeast winds 10 to 20 knots. waves calm to 2 feet.
.thursday night...southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.saturday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$