fzus61 kbuf 191402
glflo 
expires:202609192100;;711181

open lake forecast for lake ontario
national weather service buffalo ny
1002 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>065-192100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt sat sep 19 2026

.this afternoon...east winds 5 to 10 knots becoming northeast.
waves 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 191402
glflo 
expires:202609192100;;711180

open lake forecast for lake ontario
national weather service buffalo ny
1002 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.


loz062-192100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt sat sep 19 2026

.this afternoon...east winds 10 to 15 knots increasing to 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 191356
glfle 
expires:202609192015;;711037

open lake forecast for lake erie
national weather service cleveland oh
956 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.


lez061-168-169-192015-
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-
956 am edt sat sep 19 2026

.rest of today...east winds 5 to 10 knots. a slight chance of
showers, then a chance of showers late. waves 2 feet or less. 
.tonight...east winds 5 to 15 knots becoming south. a chance of
showers with a slight chance of thunderstorms. waves 2 feet or
less. 
.sunday...south 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 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.

$$

fzus61 kcle 191356
glfle 
expires:202609192015;;711035

open lake forecast for lake erie
national weather service cleveland oh
956 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.


lez162-163-192015-
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-
956 am edt sat sep 19 2026

.rest of today...east winds around 10 knots. a chance of showers
late this morning, then showers 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 showers
likely with a slight chance of 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 with a chance of thunderstorms 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 191356
glfle 
expires:202609192015;;711036

open lake forecast for lake erie
national weather service cleveland oh
956 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>167-192015-
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-
956 am edt sat sep 19 2026

.rest of today...east winds 5 to 15 knots. a chance of showers,
then showers likely 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 showers
likely with a slight chance of thunderstorms late in the evening.
a chance of showers with a slight chance of thunderstorms after
midnight. waves 1 to 3 feet. 
.sunday...south winds 10 to 15 knots becoming northeast 15 to
20 knots. showers 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.

$$

fzus63 kdtx 191400
glfsc 
expires:202609192200;;711100

lake st clair forecast
national weather service detroit/pontiac mi
1000 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.


lcz460-192200-
lake st clair-
1000 am edt sat sep 19 2026

.rest of today...east winds 5 to 10 knots becoming southeast 10 to
15 knots late in the afternoon. cloudy. a chance of light showers
late in the morning...then 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 2 feet
or less.
.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 with gusts to 35 knot gales.
partly cloudy. waves 2 to 4 feet.  a gale warning may be needed.
.wednesday...east winds to 30 knots with gusts to 35 knot gales.
mostly cloudy with a chance of showers. waves 2 to 4 feet.

$$

fzus63 kdtx 191358
glflh 
expires:202609192200;;711047

open lake forecast for lake huron
national weather service detroit/pontiac mi
958 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.


lhz363-462>464-192200-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
958 am edt sat sep 19 2026

.rest of today...southeast winds 10 to 15 knots. waves 1 to
3 feet. 
.tonight...east winds 5 to 10 knots. a chance of showers after
midnight. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots becoming north 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...east winds 15 to 20 knots with gusts to around
30 knots increasing to 20 to 25 knots with gusts to around
30 knots . waves 4 to 6 feet. 
.wednesday...east winds 15 to 20 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 


$$

fzus63 kdtx 191358
glflh 
expires:202609192200;;711046

open lake forecast for lake huron
national weather service detroit/pontiac mi
958 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.


lhz361-362-192200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
958 am edt sat sep 19 2026

.rest of 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 backing to the northeast
early in the morning. waves 1 to 3 feet. 
.sunday...northeast winds 5 to 10 knots becoming north 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet. 
.sunday night...north winds 10 to 15 knots becoming northeast
15 to 20 knots in the late evening and overnight. waves 3 to
5 feet. 
.monday...northeast winds 15 to 20 knots decreasing to 10 to
15 knots late in the morning...then increasing to 15 to 20 knots
late in the evening. waves 3 to 5 feet. 
.tuesday...east winds 15 to 20 knots. waves 3 to 5 feet. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. waves 3 to 5 feet. 


$$

fzus63 kmkx 191424
glflm 
expires:202609192115;;712230

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
924 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-192115-
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-
924 am cdt sat sep 19 2026

sheboygan wi to pentwater mi south...

.rest of today...southeast winds to 30 kt diminishing to 10 to
20 kt. chance of showers and slight chance of thunderstorms.
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. showers likely with a chance of thunderstorms in the
evening, then showers with a chance of thunderstorms overnight.
waves 3 to 5 ft. 
.sunday...northeast winds to 30 kt increasing to gales to 35 kt.
chance of showers. waves 4 to 7 ft occasionally to 9 ft building
to 7 to 10 ft occasionally to 13 ft. 
.sunday night...northeast gales to 35 kt becoming east to 30 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.monday...east winds to 30 kt becoming northeast gales to 35 kt.
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 191424
glflm 
expires:202609192115;;712229

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
924 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.


lmz261-362-364-366-563-565-567-868-192115-
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-
924 am cdt sat sep 19 2026

sheboygan wi to pentwater mi north...

.rest of today...southeast winds 15 to 25 kt becoming east 10 to
20 kt. chance of showers. waves 4 to 7 ft occasionally to 9 ft. 
.tonight...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
chance of showers in the evening, then slight chance of showers
overnight. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.sunday...northeast winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 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. 
.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 191401
glfls 
expires:202609192000;;711149

open lake forecast for lake superior
national weather service marquette mi
1001 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 is moving into western quebec, 
and is expected to weaken to 30.2 inches by the afternoon. 
meanwhile, broad 29.9 inch low pressure is stretched out over the 
central plains, while 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-
1001 am edt sat sep 19 2026

.rest of 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 191401
glfls 
expires:202609192000;;711150

open lake forecast for lake superior
national weather service marquette mi
1001 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 is moving into western quebec, 
and is expected to weaken to 30.2 inches by the afternoon. 
meanwhile, broad 29.9 inch low pressure is stretched out over the 
central plains, while 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-
1001 am edt sat sep 19 2026

.rest of today...southeast winds 10 to 20 knots becoming east
5 to 15 knots 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. 

$$

fzus63 kmqt 191401
glfls 
expires:202609192000;;711145

open lake forecast for lake superior
national weather service marquette mi
1001 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 is moving into western quebec, 
and is expected to weaken to 30.2 inches by the afternoon. 
meanwhile, broad 29.9 inch low pressure is stretched out over the 
central plains, while 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-
1001 am edt sat sep 19 2026 /901 am cdt sat sep 19 2026/

.rest of today...east winds 5 to 15 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 191401
glfls 
expires:202609192000;;711146

open lake forecast for lake superior
national weather service marquette mi
1001 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 is moving into western quebec, 
and is expected to weaken to 30.2 inches by the afternoon. 
meanwhile, broad 29.9 inch low pressure is stretched out over the 
central plains, while 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-
1001 am edt sat sep 19 2026

.rest of 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 191401
glfls 
expires:202609192000;;711147

open lake forecast for lake superior
national weather service marquette mi
1001 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 is moving into western quebec, 
and is expected to weaken to 30.2 inches by the afternoon. 
meanwhile, broad 29.9 inch low pressure is stretched out over the 
central plains, while 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-
1001 am edt sat sep 19 2026

.rest of today...south winds 5 to 15 knots becoming southeast
less than 10 knots 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 191401
glfls 
expires:202609192000;;711148

open lake forecast for lake superior
national weather service marquette mi
1001 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 is moving into western quebec, 
and is expected to weaken to 30.2 inches by the afternoon. 
meanwhile, broad 29.9 inch low pressure is stretched out over the 
central plains, while 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-
1001 am edt sat sep 19 2026

.rest of 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. 

$$