fzus61 kbuf 190802
glflo 
expires:202609191500;;699469

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat sep 19 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a ridge of high pressure averaging 30.4 inches 
over the lake will slowly drift to the east through tonight. during 
sunday night, a cold front will sweep southward across the lake. 
behind the front, a ridge averaging 30.4 inches should build from 
northern ontario through monday. by monday night through tuesday, a 
low of 30.0 inches should move from near the lower ohio valley 
toward the mid-atlantic states and extend a weak trough averaging 
30.3 inches over the eastern great lakes.


loz063>065-191500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat sep 19 2026

.today...east winds 5 to 15 knots becoming northeast. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...east winds 5 to 15 knots becoming southeast. a chance
of showers late. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming northeast 15 to
20 knots. showers. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots. waves 3 to 6 feet. 
.tuesday...east winds 15 to 25 knots. waves 3 to 6 feet. 
.wednesday...east winds 15 to 20 knots. a chance of showers
wednesday night. waves 3 to 5 feet subsiding to 2 to 4 feet. 

$$

fzus61 kbuf 190802
glflo 
expires:202609191500;;699468

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat sep 19 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a ridge of high pressure averaging 30.4 inches 
over the lake will slowly drift to the east through tonight. during 
sunday night, a cold front will sweep southward across the lake. 
behind the front, a ridge averaging 30.4 inches should build from 
northern ontario through monday. by monday night through tuesday, a 
low of 30.0 inches should move from near the lower ohio valley 
toward the mid-atlantic states and extend a weak trough averaging 
30.3 inches over the eastern great lakes.


loz062-191500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat sep 19 2026

.today...east winds 15 to 20 knots. waves 2 to 4 feet. 
.tonight...east winds 15 to 20 knots becoming southeast 5 to
15 knots. a chance of showers after midnight. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.sunday...east winds 10 to 15 knots becoming northeast. showers
likely. waves 1 to 3 feet. 
.sunday night...northeast winds 10 to 15 knots increasing to
15 to 25 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.monday...northeast winds 15 to 25 knots. waves 3 to 6 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.tuesday...east winds 20 to 25 knots. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 4 to 7 feet subsiding to 3 to 5 feet. waves occasionally
around 9 feet. 

$$

fzus61 kcle 190742
glfle 
expires:202609191415;;698813

open lake forecast for lake erie
national weather service cleveland oh
342 am edt sat sep 19 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 nudge north today before a low pressure system 
29.80 inches moves along it and into the southern great lakes region 
saturday night into sunday. on sunday, a strong cold front will push 
southeast through the area before a trough averaging 29.80 inches 
settles over the area through midweek.


lez162-163-191415-
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-
342 am edt sat sep 19 2026

.today...east winds around 10 knots. a chance of showers early,
then showers likely late this morning. showers likely with a
slight chance of thunderstorms this afternoon. waves 2 feet or
less. 
.tonight...east winds 5 to 15 knots becoming south. a chance of
showers with a slight chance of thunderstorms early, then a
chance of showers and thunderstorms late in the evening. showers
with a chance of thunderstorms after midnight. waves 2 feet or
less. 
.sunday...west winds 10 to 15 knots becoming northeast 15 to
20 knots. showers likely in the morning, then a chance of showers
in the afternoon. waves 1 to 3 feet. 
.sunday night...northeast winds 15 to 25 knots. waves 2 to 4 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.monday...northeast winds 20 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers during the day, then showers likely tuesday night. waves
5 to 8 feet. waves occasionally around 10 feet. 
.wednesday...east winds to 30 knots diminishing to 15 to
20 knots. showers likely during the day, then a chance of showers
wednesday night. waves 4 to 7 feet subsiding to 2 to 4 feet.
waves occasionally around 9 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 190742
glfle 
expires:202609191415;;698814

open lake forecast for lake erie
national weather service cleveland oh
342 am edt sat sep 19 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 nudge north today before a low pressure system 
29.80 inches moves along it and into the southern great lakes region 
saturday night into sunday. on sunday, a strong cold front will push 
southeast through the area before a trough averaging 29.80 inches 
settles over the area through midweek.


lez164>167-191415-
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-
342 am edt sat sep 19 2026

.today...east winds 5 to 15 knots. a slight chance of showers
late this morning. a chance of showers early this afternoon, then
a chance of showers with a slight chance of thunderstorms late.
waves 1 to 3 feet. 
.tonight...east winds 10 to 15 knots becoming south. a chance of
showers with a slight chance of thunderstorms early, then a
chance of showers and thunderstorms late in the evening. showers
likely with a chance of thunderstorms after midnight. waves 1 to
3 feet. 
.sunday...south winds 10 to 15 knots becoming northeast 15 to
20 knots. showers with a chance of thunderstorms in the morning,
then a chance of showers in the afternoon. waves 1 to 3 feet
building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots. waves 3 to 6 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.monday...east winds to 30 knots. waves 6 to 9 feet. waves
occasionally around 11 feet. 
.tuesday...east winds to 30 knots. a chance of showers during the
day, then showers likely tuesday night. waves 6 to 9 feet. waves
occasionally around 11 feet. 
.wednesday...east winds to 30 knots diminishing to 15 to
20 knots. showers likely during the day, then a chance of showers
wednesday night. waves 5 to 8 feet subsiding to 3 to 6 feet.
waves occasionally around 10 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 190742
glfle 
expires:202609191415;;698815

open lake forecast for lake erie
national weather service cleveland oh
342 am edt sat sep 19 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 nudge north today before a low pressure system 
29.80 inches moves along it and into the southern great lakes region 
saturday night into sunday. on sunday, a strong cold front will push 
southeast through the area before a trough averaging 29.80 inches 
settles over the area through midweek.


lez061-168-169-191415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
342 am edt sat sep 19 2026

.today...east winds 5 to 15 knots. a slight chance of showers
late. waves 1 to 3 feet. 
.tonight...east winds 5 to 15 knots becoming south. a slight
chance of showers and thunderstorms early, then a chance of
showers with a slight chance of thunderstorms late in the
evening. showers with a chance of thunderstorms after midnight.
waves 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming northeast 15 to
20 knots. showers likely with a chance of thunderstorms in the
morning, then a chance of showers in the afternoon. waves 1 to
3 feet building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots. waves 2 to 4 feet
building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots becoming east. waves
5 to 8 feet. waves occasionally around 10 feet. 
.tuesday...east winds to 30 knots. a chance of showers. waves
5 to 8 feet. waves occasionally around 10 feet. 
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 3 to 6 feet subsiding to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 190754
glfsc 
expires:202609191600;;699131

lake st clair forecast
national weather service detroit/pontiac mi
354 am edt sat sep 19 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...a weak low pressure system follows a stalled front
from the central plains into the ohio valley this weekend. a
broad area of high pressure then builds into northern ontario and
the northern great lakes sunday into monday.


lcz460-191600-
lake st clair-
354 am edt sat sep 19 2026

.today...east winds 10 to 15 knots diminishing to 5 to 10 knots in
the late morning and early afternoon...then becoming southeast 10 to
15 knots late in the afternoon. mostly cloudy. a chance of light
showers late in the morning. showers likely early in the afternoon.
a chance of light showers late in the afternoon. waves 2 feet or
less.
.tonight...east winds 10 to 15 knots diminishing to 5 to 10 knots
after midnight. a chance of light showers in the evening. a chance
of thunderstorms by midnight. showers after midnight. patchy fog
early in the morning. waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots increasing to 15 to 20
knots early in the afternoon. mostly cloudy. a chance of showers
early in the morning. patchy fog until late afternoon. waves 1 to 3
feet.
.sunday night...northeast winds 15 to 20 knots increasing to 20 to
25 knots after midnight. partly cloudy. waves 2 to 4 feet.
.monday...northeast winds 15 to 20 knots increasing to 30 knots in
the evening. partly sunny becoming mostly cloudy. waves 1 to 3 feet
building to 2 to 4 feet in the evening. a small craft advisory may
be needed.
.tuesday...northeast winds to 30 knots. partly cloudy. waves 2 to
4 feet.
.wednesday...east winds to 30 knots. mostly cloudy with a chance 
of showers. waves 2 to 4 feet.

$$

fzus63 kdtx 190753
glflh 
expires:202609191600;;699129

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sat sep 19 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...a weak low pressure system follows a stalled front
from the central plains into the ohio valley this weekend. a
broad area of high pressure then builds into northern ontario and
the northern great lakes sunday into monday.


lhz462>464-191600-
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-
353 am edt sat sep 19 2026

.today...southeast winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...southeast winds 10 to 15 knots becoming east 5 to
10 knots early in the morning. a chance of showers after
midnight. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. a chance of showers in the
morning. waves 1 to 3 feet building to 3 to 5 feet in the late
morning and afternoon. 
.sunday night...north winds 15 to 20 knots becoming northeast
20 to 25 knots by midnight...then decreasing to 15 to 20 knots
after midnight. waves 5 to 7 feet. waves occasionally around
10 feet. 
.monday...northeast winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.tuesday...northeast winds 15 to 20 knots with gusts to around
30 knots becoming east 20 to 25 knots with gusts to around
30 knots by midnight. waves 4 to 6 feet. waves occasionally 
around 8 feet. 
.wednesday...east winds 15 to 20 knots. a chance of showers.
waves 4 to 6 feet. waves occasionally around 8 feet. 


$$

fzus63 kdtx 190753
glflh 
expires:202609191600;;699128

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sat sep 19 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...a weak low pressure system follows a stalled front
from the central plains into the ohio valley this weekend. a
broad area of high pressure then builds into northern ontario and
the northern great lakes sunday into monday.


lhz362-363-191600-
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-
353 am edt sat sep 19 2026

.today...east winds 10 to 15 knots becoming southeast 5 to
10 knots late in the afternoon. waves 1 to 3 feet. 
.tonight...east winds 5 to 10 knots. a chance of showers after
midnight. waves 2 feet or less. 
.sunday...northeast winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late morning and afternoon. 
.sunday night...north winds 15 to 20 knots becoming northeast
20 to 25 knots by midnight...then decreasing to 15 to 20 knots
after midnight. waves 3 to 5 feet building to 5 to 7 feet after
midnight. waves occasionally around 10 feet. 
.monday...northeast winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.tuesday...east winds 15 to 20 knots. gusts to 30 knots early in
the evening. waves 4 to 6 feet. waves occasionally around 8 feet.
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. waves 4 to 6 feet. waves occasionally
around 8 feet. 


$$

fzus63 kdtx 190753
glflh 
expires:202609191600;;699127

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sat sep 19 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...a weak low pressure system follows a stalled front
from the central plains into the ohio valley this weekend. a
broad area of high pressure then builds into northern ontario and
the northern great lakes sunday into monday.


lhz361-191600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
353 am edt sat sep 19 2026

.today...east winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...east winds 5 to 10 knots. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...north winds 10 to 15 knots becoming northeast
15 to 20 knots in the late evening and overnight. waves 1 to
3 feet building to 3 to 5 feet in the late evening and overnight.
.monday...east winds 10 to 15 knots becoming northeast 5 to
10 knots late in the afternoon...then becoming east 10 to
15 knots late in the evening. waves 2 to 4 feet subsiding to 1 to
3 feet late in the morning...then building to 2 to 4 feet late in
the evening. 
.tuesday...east winds 10 to 15 knots. waves 2 to 4 feet. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots . waves 3 to 5 feet. 


$$

fzus63 kmkx 190813
glflm 
expires:202609191530;;700492

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cdt sat sep 19 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

low pressure around 29.8 inches will move east northeast toward 
far southern lake michigan today, then just south of the southern 
portions of the lake tonight. winds will become southeast and
gusty ahead of the low, then shift northeast tonight as the low 
passes to the south. areas of widespread showers and thunderstorms
will accompany the passing area of low pressure today into 
tonight.

gusty east to northeast winds are then expected sunday through 
monday night, as low pressure slowly moves into the ohio river 
valley. high pressure around 30.5 inches will move southeast into
ontario during this period. gusts could occasionally approach 
gale force sunday into monday night, mainly over southern portions
of the lake. winds will steadily taper tuesday through wednesday,
as the high pressure system moves into quebec and new england.


lmz080-669-671-673-675-777-779-870-872-874-876-878-191530-
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-
313 am cdt sat sep 19 2026

sheboygan wi to pentwater mi south...

.today...southeast winds to 30 kt diminishing to 10 to 20 kt.
showers and scattered thunderstorms this morning, then numerous
showers with isolated thunderstorms this afternoon. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.tonight...southeast winds 10 to 20 kt backing to northeast 15 to
25 kt. numerous showers and scattered thunderstorms in the
evening, then scattered showers with isolated thunderstorms
overnight. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...northeast winds to 30 kt. chance of showers. waves 7 to
10 ft occasionally to 13 ft building to 8 to 11 ft occasionally
to 14 ft. 
.sunday night...northeast winds to 30 kt becoming east. waves 10 
to 14 ft occasionally to 18 ft subsiding to 8 to 11 ft 
occasionally to 14 ft. 
.monday...east winds to 30 kt becoming northeast. waves 7 to 10 
ft occasionally to 13 ft. 
.monday night...northeast winds to 30 kt becoming east. waves
6 to 9 ft occasionally to 12 ft. 
.tuesday...northeast winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.wednesday...northeast winds 15 to 25 kt. waves 4 to 7 ft
occasionally to 9 ft.  

$$

fzus63 kmkx 190813
glflm 
expires:202609191530;;700491

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cdt sat sep 19 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

low pressure around 29.8 inches will move east northeast toward 
far southern lake michigan today, then just south of the southern 
portions of the lake tonight. winds will become southeast and
gusty ahead of the low, then shift northeast tonight as the low 
passes to the south. areas of widespread showers and thunderstorms
will accompany the passing area of low pressure today into 
tonight.

gusty east to northeast winds are then expected sunday through 
monday night, as low pressure slowly moves into the ohio river 
valley. high pressure around 30.5 inches will move southeast into
ontario during this period. gusts could occasionally approach 
gale force sunday into monday night, mainly over southern portions
of the lake. winds will steadily taper tuesday through wednesday,
as the high pressure system moves into quebec and new england.


lmz261-362-364-366-563-565-567-868-191530-
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-
313 am cdt sat sep 19 2026

sheboygan wi to pentwater mi north...

.today...southeast winds 15 to 25 kt becoming east 10 to 20 kt.
scattered showers. waves 4 to 7 ft occasionally to 9 ft. 
.tonight...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
scattered showers in the evening, then isolated showers
overnight. waves 3 to 5 ft. 
.sunday...northeast winds to 30 kt. waves 4 to 7 ft occasionally
to 9 ft building to 6 to 9 ft occasionally to 12 ft. 
.sunday night...northeast winds to 30 kt diminishing to 15 to
25 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to
9 ft occasionally to 12 ft. 
.monday...east winds 15 to 25 kt becoming northeast to 30 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.monday night...east winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...east winds 15 to 25 kt becoming northeast to 30 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...east winds 15 to 25 kt becoming northeast. waves
3 to 5 ft.  

$$

fzus63 kmqt 190801
glfls 
expires:202609192000;;699390

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat sep 19 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...

this morning, 30.3 inch high pressure over the ontario/quebec line 
weakens to 30.2 inches as it moves into western quebec. meanwhile, 
29.9 inch low pressure develops over the central plains, reaching 
iowa late this morning as a 29.8 inch low tracks across hudson bay. 
into sunday, a 30.2 inch high over the canadian prairie builds to 
30.4 inches as it moves into northwestern ontario. this high 
pressure center slowly builds to 30.5 inches as it shifts into 
quebec by midday tuesday, trailing a 30.4 inch ridge over lake 
superior. the high builds further to 30.6 inches wednesday as it 
progresses eastward.




lsz162-192000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat sep 19 2026 /301 am cdt sat sep 19 2026/

.early this morning...northeast winds 10 to 20 knots. waves calm
to 2 feet. 
.today...east winds 10 to 20 knots backing northeast in the
afternoon, then veering east late. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots backing north after
midnight, then becoming northeast 15 to 25 knots late. waves
building to 1 to 3 feet. 
.sunday...northeast winds 20 to 30 knots veering east late. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet. 
.sunday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. waves building to 1 to 3 feet. 
.monday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 10 to 20 knots. waves calm to 2 feet. 
.wednesday...east winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202609192000;;699391

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat sep 19 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...

this morning, 30.3 inch high pressure over the ontario/quebec line 
weakens to 30.2 inches as it moves into western quebec. meanwhile, 
29.9 inch low pressure develops over the central plains, reaching 
iowa late this morning as a 29.8 inch low tracks across hudson bay. 
into sunday, a 30.2 inch high over the canadian prairie builds to 
30.4 inches as it moves into northwestern ontario. this high 
pressure center slowly builds to 30.5 inches as it shifts into 
quebec by midday tuesday, trailing a 30.4 inch ridge over lake 
superior. the high builds further to 30.6 inches wednesday as it 
progresses eastward.




lsz263-192000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 am edt sat sep 19 2026

.early this morning...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...southeast winds 5 to 15 knots backing northeast late.
waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots becoming north 10 to 20 knots
after midnight, then becoming northeast 15 to 25 knots late. a
slight chance of showers. waves building to 2 to 4 feet. 
.sunday...northeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots increasing to 15 to 25 knots
by mid afternoon. waves building to 1 to 3 feet. 
.monday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 10 to 20 knots veering southeast. waves
calm to 2 feet. 
.wednesday...southeast winds 10 to 20 knots becoming south 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202609192000;;699392

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat sep 19 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...

this morning, 30.3 inch high pressure over the ontario/quebec line 
weakens to 30.2 inches as it moves into western quebec. meanwhile, 
29.9 inch low pressure develops over the central plains, reaching 
iowa late this morning as a 29.8 inch low tracks across hudson bay. 
into sunday, a 30.2 inch high over the canadian prairie builds to 
30.4 inches as it moves into northwestern ontario. this high 
pressure center slowly builds to 30.5 inches as it shifts into 
quebec by midday tuesday, trailing a 30.4 inch ridge over lake 
superior. the high builds further to 30.6 inches wednesday as it 
progresses eastward.




lsz264-192000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sat sep 19 2026

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots backing southeast late. waves
calm to 2 feet. 
.tonight...south winds less than 10 knots becoming north 5 to
15 knots after midnight, then becoming northeast 15 to 25 knots
late. a slight chance of showers. waves building to 2 to 4 feet. 
.sunday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots late. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 
.sunday night...northeast winds 5 to 15 knots veering east after
midnight. waves subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.wednesday...southeast winds 5 to 15 knots. waves calm to 2 feet.

$$

fzus63 kmqt 190801
glfls 
expires:202609192000;;699393

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat sep 19 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...

this morning, 30.3 inch high pressure over the ontario/quebec line 
weakens to 30.2 inches as it moves into western quebec. meanwhile, 
29.9 inch low pressure develops over the central plains, reaching 
iowa late this morning as a 29.8 inch low tracks across hudson bay. 
into sunday, a 30.2 inch high over the canadian prairie builds to 
30.4 inches as it moves into northwestern ontario. this high 
pressure center slowly builds to 30.5 inches as it shifts into 
quebec by midday tuesday, trailing a 30.4 inch ridge over lake 
superior. the high builds further to 30.6 inches wednesday as it 
progresses eastward.




lsz265-192000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sat sep 19 2026

.early this morning...south winds 10 to 20 knots. waves calm to
2 feet. 
.today...southeast winds 10 to 20 knots. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots backing north after
midnight, then increasing to 15 to 25 knots late. waves calm to
2 feet. 
.sunday...northeast winds to 30 knots with a few gale force gusts
to 35 knots possible diminishing to 20 to 30 knots late. waves
building to 3 to 6 feet occasionally to 8 feet. 
.sunday night...northeast winds 20 to 30 knots becoming east
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...east winds 15 to 25 knots diminishing to 10 to 20 knots
by mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...east winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots becoming southeast 5 to
15 knots. waves calm to 2 feet. 
.wednesday...east winds 10 to 20 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202609192000;;699394

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat sep 19 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...

this morning, 30.3 inch high pressure over the ontario/quebec line 
weakens to 30.2 inches as it moves into western quebec. meanwhile, 
29.9 inch low pressure develops over the central plains, reaching 
iowa late this morning as a 29.8 inch low tracks across hudson bay. 
into sunday, a 30.2 inch high over the canadian prairie builds to 
30.4 inches as it moves into northwestern ontario. this high 
pressure center slowly builds to 30.5 inches as it shifts into 
quebec by midday tuesday, trailing a 30.4 inch ridge over lake 
superior. the high builds further to 30.6 inches wednesday as it 
progresses eastward.




lsz266-192000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt sat sep 19 2026

.early this morning...south winds 10 to 20 knots. waves calm to
2 feet. 
.today...south winds 10 to 20 knots backing southeast in the
afternoon, then becoming east 5 to 15 knots late. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots backing north after
midnight, then increasing to 15 to 25 knots late. a slight chance
of showers after midnight. waves building to 1 to 3 feet. 
.sunday...northeast winds 20 to 30 knots becoming north 15 to
25 knots late. waves building to 3 to 6 feet occasionally to
8 feet. 
.sunday night...northeast winds 15 to 25 knots becoming east
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...east winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.monday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots becoming southeast 5 to
15 knots. waves calm to 2 feet. 
.wednesday...east winds 10 to 20 knots becoming southeast 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202609192000;;699395

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat sep 19 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...

this morning, 30.3 inch high pressure over the ontario/quebec line 
weakens to 30.2 inches as it moves into western quebec. meanwhile, 
29.9 inch low pressure develops over the central plains, reaching 
iowa late this morning as a 29.8 inch low tracks across hudson bay. 
into sunday, a 30.2 inch high over the canadian prairie builds to 
30.4 inches as it moves into northwestern ontario. this high 
pressure center slowly builds to 30.5 inches as it shifts into 
quebec by midday tuesday, trailing a 30.4 inch ridge over lake 
superior. the high builds further to 30.6 inches wednesday as it 
progresses eastward.




lsz267-192000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sat sep 19 2026

.early this morning...southeast winds 10 to 20 knots. waves calm
to 2 feet. 
.today...southeast winds 10 to 20 knots backing east late. waves
calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.sunday...northeast winds 15 to 25 knots backing north late.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots veering east after
midnight. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.monday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...northeast winds 10 to 20 knots veering east after
midnight. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.wednesday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves calm to 2 feet. 

$$