(1/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/19/2026 3:53 AM America/New_York.
Valid through 9/19/2026 12:00 PM America/New_York.
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.
$$
(2/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/19/2026 3:53 AM America/New_York.
Valid through 9/19/2026 12:00 PM America/New_York.
fzus63 kdtx 190753
glflh
expires:202609191600;;699128
open lake forecast for lake huron
national weather service detroit/pontiac mi
353 am edt sat sep 19 2026
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a weak low pressure system follows a stalled front
from the central plains into the ohio valley this weekend. a
broad area of high pressure then builds into northern ontario and
the northern great lakes sunday into monday.
lhz362-363-191600-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
353 am edt sat sep 19 2026
.today...east winds 10 to 15 knots becoming southeast 5 to
10 knots late in the afternoon. waves 1 to 3 feet.
.tonight...east winds 5 to 10 knots. a chance of showers after
midnight. waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late morning and afternoon.
.sunday night...north winds 15 to 20 knots becoming northeast
20 to 25 knots by midnight...then decreasing to 15 to 20 knots
after midnight. waves 3 to 5 feet building to 5 to 7 feet after
midnight. waves occasionally around 10 feet.
.monday...northeast winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet.
.tuesday...east winds 15 to 20 knots. gusts to 30 knots early in
the evening. waves 4 to 6 feet. waves occasionally around 8 feet.
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. waves 4 to 6 feet. waves occasionally
around 8 feet.
$$
(3/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/19/2026 3:53 AM America/New_York.
Valid through 9/19/2026 12:00 PM America/New_York.
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.
$$
(4/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/19/2026 3:13 AM US/Central.
Valid through 9/19/2026 10:30 AM US/Central.
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.
$$
(5/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/19/2026 3:13 AM US/Central.
Valid through 9/19/2026 10:30 AM US/Central.
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.
$$
(6/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/19/2026 4:01 AM America/New_York.
Valid through 9/19/2026 4:00 PM America/New_York.
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.
$$
(7/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/19/2026 4:01 AM America/New_York.
Valid through 9/19/2026 4:00 PM America/New_York.
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.
$$
(8/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/19/2026 4:01 AM America/New_York.
Valid through 9/19/2026 4:00 PM America/New_York.
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.
$$
(9/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/19/2026 4:01 AM America/New_York.
Valid through 9/19/2026 4:00 PM America/New_York.
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.
$$
(10/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/19/2026 4:01 AM America/New_York.
Valid through 9/19/2026 4:00 PM America/New_York.
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.
$$
(11/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/19/2026 4:01 AM America/New_York.
Valid through 9/19/2026 4:00 PM America/New_York.
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.
$$
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