fzus61 kbuf 220802
glflo 
expires:202609221500;;860697

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue sep 22 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 mid atlantic 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.


loz062-221500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt tue sep 22 2026

.today...northeast winds 15 to 25 knots becoming east. waves 4 to
7 feet. waves occasionally around 9 feet. 
.tonight...east winds 15 to 20 knots. waves 4 to 6 feet. 
.wednesday...east winds 15 to 20 knots. waves 3 to 6 feet. 
.wednesday night...east winds 15 to 20 knots becoming southeast
10 to 15 knots. waves 3 to 6 feet subsiding to 2 to 3 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 kbuf 220802
glflo 
expires:202609221500;;860698

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue sep 22 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 mid atlantic 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>065-221500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt tue sep 22 2026

.today...east winds 15 to 20 knots becoming northeast. waves 3 to
6 feet. 
.tonight...northeast winds 15 to 20 knots becoming east. waves
3 to 5 feet. 
.wednesday...east winds 10 to 15 knots becoming northeast 15 to
20 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday night...northeast winds 15 to 20 knots becoming
southeast 10 to 15 knots. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.thursday...east winds 5 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. waves 3 to 5 feet
subsiding to 1 to 3 feet. 

$$

fzus61 kcle 221328
glfle 
expires:202609222015;;872292

open lake forecast for lake erie
national weather service cleveland oh
928 am edt tue sep 22 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>168-222015-
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-
928 am edt tue sep 22 2026

.this afternoon...east winds 20 to 25 knots. a slight chance of
waterspouts. a slight chance of showers, then a chance of showers
late. waves 6 to 9 feet. waves occasionally around 11 feet. 
.tonight...east winds 15 to 25 knots. a slight chance of
waterspouts through the early overnight. a chance of showers.
waves 5 to 9 feet subsiding to 4 to 7 feet. waves occasionally
around 11 feet. 
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 4 to 7 feet. waves occasionally around 9 feet. 
.wednesday night...east winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 2 to 4 feet. waves occasionally around 9 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...east winds 10 to 15 knots becoming northeast. waves
1 to 3 feet. 
.saturday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 221328
glfle 
expires:202609222015;;872291

open lake forecast for lake erie
national weather service cleveland oh
928 am edt tue sep 22 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.


lez162-163-222015-
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-
928 am edt tue sep 22 2026

.this afternoon...northeast winds 20 to 25 knots. a slight chance
of waterspouts. a chance of showers. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.tonight...northeast winds 20 to 25 knots becoming east. a slight
chance of waterspouts through the early overnight. a chance of
showers through the early overnight, then showers likely late.
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 25 knots. a chance of showers
in the evening. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.thursday...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.friday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots becoming north. waves
2 feet or less. 

$$

fzus61 kcle 221328
glfle 
expires:202609222015;;872293

open lake forecast for lake erie
national weather service cleveland oh
928 am edt tue sep 22 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.


lez061-169-222015-
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-
928 am edt tue sep 22 2026

.this afternoon...east winds 15 to 25 knots becoming northeast.
waves 3 to 6 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 
.tonight...northeast winds 15 to 25 knots becoming east. waves
4 to 7 feet 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 10 knots. waves 2 feet or less. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 

$$

fzus63 kdtx 220722
glfsc 
expires:202609221530;;859712

lake st clair forecast
national weather service detroit/pontiac mi
322 am edt tue sep 22 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, 30.60 inches, builds into quebec today
leading to continued modest east-northeast winds over the central
great lakes with mainly dry conditions. sporadic light shower
chances exist over lake st. clair and western erie tonight. 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.


lcz460-221530-
lake st clair-
322 am edt tue sep 22 2026

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

.today...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.
.tonight...northeast winds 20 to 25 knots with gusts to 30 knots
becoming east to 30 knots by midnight...then diminishing to 20 to 25
knots early in the morning. partly cloudy this evening becoming
mostly cloudy. waves 3 to 5 feet. waves occasionally around 7 feet.
.wednesday...east winds 20 to 25 knots diminishing to 15 to 20 knots
with gusts to 30 knots early in the afternoon. partly sunny. waves 2
to 4 feet.
.wednesday night...east winds 20 to 25 knots diminishing to 15 to 20
knots after midnight. mostly clear. waves 2 to 4 feet subsiding to 1
to 3 feet after midnight.
.thursday...east winds 10 to 15 knots. clear. waves 2 feet or less.
.friday...northeast winds 10 to 15 knots. clear. waves 2 feet or
less.
.saturday...northeast winds 5 to 10 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 220722
glflh 
expires:202609221530;;859707

open lake forecast for lake huron
national weather service detroit/pontiac mi
322 am edt tue sep 22 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, 30.60 inches, builds into quebec today
leading to continued modest east-northeast winds over the central
great lakes with mainly dry conditions. sporadic light shower
chances exist over lake st. clair and western erie tonight. 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.


lhz361-221530-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
322 am edt tue sep 22 2026

.today...east winds 10 to 15 knots. waves 2 to 4 feet. 
.tonight...east winds 5 to 10 knots increasing to 15 to 20 knots.
waves 1 to 3 feet building to 3 to 5 feet after midnight. 
.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 220722
glflh 
expires:202609221530;;859708

open lake forecast for lake huron
national weather service detroit/pontiac mi
322 am edt tue sep 22 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, 30.60 inches, builds into quebec today
leading to continued modest east-northeast winds over the central
great lakes with mainly dry conditions. sporadic light shower
chances exist over lake st. clair and western erie tonight. 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.


lhz362-363-221530-
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-
322 am edt tue sep 22 2026

.today...northeast winds 15 to 20 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.tonight...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 backing to the northeast late in the
afternoon veering to the east late in the evening. waves 1 to
3 feet. 
.friday...light and variable winds becoming north 5 to 10 knots .
waves 2 feet or less. 
.saturday...north winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 


$$

fzus63 kdtx 220722
glflh 
expires:202609221530;;859709

open lake forecast for lake huron
national weather service detroit/pontiac mi
322 am edt tue sep 22 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, 30.60 inches, builds into quebec today
leading to continued modest east-northeast winds over the central
great lakes with mainly dry conditions. sporadic light shower
chances exist over lake st. clair and western erie tonight. 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>464-221530-
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-
322 am edt tue sep 22 2026

.today...northeast winds 15 to 20 knots. waves 3 to 5 feet. 
.tonight...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 becoming north 10 to
15 knots early in the evening...then becoming northeast 5 to
10 knots by midnight. waves 2 feet or less. 


$$

fzus63 kmkx 220755
glflm 
expires:202609221515;;860417

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 am cdt tue sep 22 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 30.6 inches will largely remain in place to
the northeast of the great lakes region through wednesday evening.
gusty east northeast winds are expected during this time. winds 
look to gradually diminish and turn southeasterly toward the end 
of the week, as the high pressure system slowly weakens and moves 
farther east.


lmz080-669-671-673-675-777-779-870-872-874-876-878-221515-
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-
255 am cdt tue sep 22 2026

sheboygan wi to pentwater mi south...

.today...east winds 15 to 25 kt becoming northeast. waves 4 to
7 ft occasionally to 9 ft. 
.tonight...northeast winds 15 to 25 kt becoming east. waves 4 to
6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to
9 ft. 
.wednesday...east winds 15 to 25 kt becoming northeast. waves
4 to 7 ft occasionally to 9 ft. 
.wednesday night...east winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.thursday...east winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 3 to 5 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 5 to 10 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 220755
glflm 
expires:202609221515;;860416

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 am cdt tue sep 22 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 30.6 inches will largely remain in place to
the northeast of the great lakes region through wednesday evening.
gusty east northeast winds are expected during this time. winds 
look to gradually diminish and turn southeasterly toward the end 
of the week, as the high pressure system slowly weakens and moves 
farther east.


lmz261-362-364-366-563-565-567-868-221515-
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-
255 am cdt tue sep 22 2026

sheboygan wi to pentwater mi north...

.today...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tonight...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 3 to 5 ft. 
.wednesday night...east winds 15 to 25 kt becoming southeast
10 to 20 kt. waves 3 to 5 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 3 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 220801
glfls 
expires:202609222000;;860627

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue sep 22 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 over the ontario-quebec border shifts east 
today and builds to 30.6 inches by wednesday morning. throughout 
today and wednesday, the high trails a 30.5 inch ridge over lake 
superior while mainly easterly surface winds persist. the quebec 
high begins to break down thursday morning, weakening to 30.4 inches 
by thursday night as light winds veer southerly. by late friday, the 
high weakens to 30.2 inches over the eastern great lakes basin as 
29.5 inch low pressure develops over montana. southerly flow 
persists through saturday as the high deteriorates further and the 
montana low pressure deepens and moves north toward the canadian 
prairies.




lsz265-222000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt tue sep 22 2026

.early this morning...east winds 10 to 20 knots. waves calm to
2 feet. 
.today...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. waves calm to 2 feet. 
.tonight...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 late. 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.
.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...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.saturday...southeast winds 10 to 20 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202609222000;;860628

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue sep 22 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 over the ontario-quebec border shifts east 
today and builds to 30.6 inches by wednesday morning. throughout 
today and wednesday, the high trails a 30.5 inch ridge over lake 
superior while mainly easterly surface winds persist. the quebec 
high begins to break down thursday morning, weakening to 30.4 inches 
by thursday night as light winds veer southerly. by late friday, the 
high weakens to 30.2 inches over the eastern great lakes basin as 
29.5 inch low pressure develops over montana. southerly flow 
persists through saturday as the high deteriorates further and the 
montana low pressure deepens and moves north toward the canadian 
prairies.




lsz266-222000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt tue sep 22 2026

.early this morning...east winds 5 to 15 knots. waves calm to
2 feet. 
.today...east winds 5 to 15 knots increasing to 10 to 20 knots
late. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots increasing to 10 to 20 knots
after midnight, then becoming southeast 5 to 15 knots late. waves
calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then backing east late. waves calm to
2 feet. 
.wednesday night...southeast winds 15 to 25 knots becoming south
10 to 20 knots 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 220801
glfls 
expires:202609222000;;860625

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue sep 22 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 over the ontario-quebec border shifts east 
today and builds to 30.6 inches by wednesday morning. throughout 
today and wednesday, the high trails a 30.5 inch ridge over lake 
superior while mainly easterly surface winds persist. the quebec 
high begins to break down thursday morning, weakening to 30.4 inches 
by thursday night as light winds veer southerly. by late friday, the 
high weakens to 30.2 inches over the eastern great lakes basin as 
29.5 inch low pressure develops over montana. southerly flow 
persists through saturday as the high deteriorates further and the 
montana low pressure deepens and moves north toward the canadian 
prairies.




lsz263-222000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 am edt tue sep 22 2026

.early this morning...east winds 5 to 15 knots. waves calm to
2 feet. 
.today...east winds 5 to 15 knots increasing to 10 to 20 knots in
the afternoon. waves building to 1 to 3 feet. 
.tonight...east winds 10 to 20 knots becoming southeast 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots backing east late.
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 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 5 to 15 knots backing southeast. waves calm
to 2 feet. 
.saturday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202609222000;;860624

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue sep 22 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 over the ontario-quebec border shifts east 
today and builds to 30.6 inches by wednesday morning. throughout 
today and wednesday, the high trails a 30.5 inch ridge over lake 
superior while mainly easterly surface winds persist. the quebec 
high begins to break down thursday morning, weakening to 30.4 inches 
by thursday night as light winds veer southerly. by late friday, the 
high weakens to 30.2 inches over the eastern great lakes basin as 
29.5 inch low pressure develops over montana. southerly flow 
persists through saturday as the high deteriorates further and the 
montana low pressure deepens and moves north toward the canadian 
prairies.




lsz162-222000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt tue sep 22 2026 /301 am cdt tue sep 22 2026/

.early this morning...east winds 5 to 15 knots. waves calm to
2 feet. 
.today...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. 
.tonight...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. 
.wednesday...southeast winds 5 to 15 knots backing east in the
afternoon, then increasing to 10 to 20 knots late. waves building
to 1 to 3 feet. 
.wednesday night...east winds 10 to 20 knots veering south after
midnight. waves subsiding to calm to 2 feet, then building to
1 to 3 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 10 to 20 knots veering south. a
chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202609222000;;860629

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue sep 22 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 over the ontario-quebec border shifts east 
today and builds to 30.6 inches by wednesday morning. throughout 
today and wednesday, the high trails a 30.5 inch ridge over lake 
superior while mainly easterly surface winds persist. the quebec 
high begins to break down thursday morning, weakening to 30.4 inches 
by thursday night as light winds veer southerly. by late friday, the 
high weakens to 30.2 inches over the eastern great lakes basin as 
29.5 inch low pressure develops over montana. southerly flow 
persists through saturday as the high deteriorates further and the 
montana low pressure deepens and moves north toward the canadian 
prairies.




lsz267-222000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt tue sep 22 2026

.early this morning...east winds 10 to 20 knots. waves calm to
2 feet. 
.today...east winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then backing northeast late. waves calm to
2 feet. 
.tonight...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 in the
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. 

$$

fzus63 kmqt 220801
glfls 
expires:202609222000;;860626

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue sep 22 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 over the ontario-quebec border shifts east 
today and builds to 30.6 inches by wednesday morning. throughout 
today and wednesday, the high trails a 30.5 inch ridge over lake 
superior while mainly easterly surface winds persist. the quebec 
high begins to break down thursday morning, weakening to 30.4 inches 
by thursday night as light winds veer southerly. by late friday, the 
high weakens to 30.2 inches over the eastern great lakes basin as 
29.5 inch low pressure develops over montana. southerly flow 
persists through saturday as the high deteriorates further and the 
montana low pressure deepens and moves north toward the canadian 
prairies.




lsz264-222000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt tue sep 22 2026

.early this morning...east winds less than 10 knots. waves calm
to 2 feet. 
.today...east winds 5 to 15 knots. waves calm to 2 feet. 
.tonight...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 10 to 20 knots becoming south
5 to 15 knots 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. a chance
of showers. waves calm to 2 feet. 

$$