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(1/17)
Latest Great Lakes Marine Forecast by KBUF
Issued 9/26/2026 4:02 PM America/New_York.
Valid through 9/26/2026 11:00 PM America/New_York.
fzus61 kbuf 262002
glflo
expires:202609270300;;101935
open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sat sep 26 2026
for waters beyond five nautical miles of shore on lake ontario
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...an expansive 30.3 inch high will persist across ontario
and southern quebec through tonight before drifting to eastern
quebec and labrador sunday. meanwhile, low pressure off the east
coast will deepen to 29.2 inches today east of the delmarva. this
low will move to near the jersey shore and long island tonight
through sunday, then meander northeast along the new england coast
monday through tuesday while gradually filling to 29.8 inches.
loz062-270300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sat sep 26 2026
.tonight...north winds 10 to 15 knots becoming northeast 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet.
.sunday...north winds 15 to 20 knots becoming northeast 10 to
15 knots. a chance of showers late. waves 3 to 6 feet.
.sunday night...northeast winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers in the evening. waves 3 to
5 feet subsiding to 2 to 4 feet.
.monday...northeast winds 5 to 15 knots diminishing to less than
10 knots. waves 1 to 3 feet.
.monday night...northwest winds less than 10 knots. waves 1 foot
or less.
.tuesday...light and variable winds. waves 1 foot or less.
.wednesday...southwest winds 10 knots or less. waves 1 foot or
less.
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of showers thursday night. waves 1 to 2 feet.
$$
(2/17)
Latest Great Lakes Marine Forecast by KBUF
Issued 9/26/2026 4:02 PM America/New_York.
Valid through 9/26/2026 11:00 PM America/New_York.
fzus61 kbuf 262002
glflo
expires:202609270300;;101936
open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sat sep 26 2026
for waters beyond five nautical miles of shore on lake ontario
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...an expansive 30.3 inch high will persist across ontario
and southern quebec through tonight before drifting to eastern
quebec and labrador sunday. meanwhile, low pressure off the east
coast will deepen to 29.2 inches today east of the delmarva. this
low will move to near the jersey shore and long island tonight
through sunday, then meander northeast along the new england coast
monday through tuesday while gradually filling to 29.8 inches.
loz063>065-270300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sat sep 26 2026
.tonight...north winds 15 to 25 knots becoming northeast. waves
2 to 4 feet building to 4 to 7 feet. waves occasionally around
9 feet.
.sunday...northeast winds to 30 knots diminishing to 15 to
25 knots. showers in the afternoon. waves 5 to 9 feet. waves
occasionally around 11 feet.
.sunday night...northeast winds 15 to 25 knots. showers likely in
the evening. waves 5 to 8 feet subsiding to 3 to 6 feet. waves
occasionally around 10 feet.
.monday...northeast winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet.
.monday night...north winds 5 to 15 knots. waves 2 feet or less.
.tuesday...north winds 10 knots or less becoming south. waves
1 foot or less.
.wednesday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less.
.thursday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of showers thursday night. waves 1 to 3 feet.
$$
(3/17)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/26/2026 3:36 PM America/New_York.
Valid through 9/26/2026 10:15 PM America/New_York.
fzus61 kcle 261936
glfle
expires:202609270215;;101108
open lake forecast for lake erie
national weather service cleveland oh
336 pm edt sat sep 26 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...
high pressure of 30.20 inches will persist over the great lakes
through monday before building off to the east on tuesday. a weak
cold front will approach the region from the west beginning on
wednesday.
lez164>167-270215-
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-
336 pm edt sat sep 26 2026
.tonight...north winds 10 to 15 knots becoming northeast. waves
1 to 3 feet.
.sunday...northeast winds 10 to 15 knots becoming north. waves
1 to 3 feet.
.sunday night...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet.
.monday...north winds 5 to 15 knots. waves 1 to 3 feet.
.monday night...north winds less than 10 knots becoming west.
waves 1 foot or less.
.tuesday...west winds 10 knots or less becoming south. waves
2 feet or less.
.wednesday...south winds 5 to 15 knots. waves 1 to 3 feet.
.thursday...southwest winds 10 to 15 knots becoming west. a
chance of showers during the day, then showers likely thursday
night. waves 1 to 3 feet.
$$
(4/17)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/26/2026 3:36 PM America/New_York.
Valid through 9/26/2026 10:15 PM America/New_York.
fzus61 kcle 261936
glfle
expires:202609270215;;101109
open lake forecast for lake erie
national weather service cleveland oh
336 pm edt sat sep 26 2026
for waters beyond five nautical miles of shore on lake erie
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...
high pressure of 30.20 inches will persist over the great lakes
through monday before building off to the east on tuesday. a weak
cold front will approach the region from the west beginning on
wednesday.
lez061-168-169-270215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
336 pm edt sat sep 26 2026
.tonight...northeast winds 10 to 15 knots. waves 1 to 3 feet.
.sunday...northeast winds 15 to 20 knots. waves 2 to 4 feet.
.sunday night...northeast winds 15 to 20 knots diminishing to
10 to 15 knots. waves 2 to 4 feet.
.monday...north winds 5 to 15 knots diminishing to less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less.
.monday night...north winds less than 10 knots. waves 1 foot or
less.
.tuesday...west winds 10 knots or less becoming south. waves
1 foot or less.
.wednesday...south winds 5 to 10 knots. waves 2 feet or less.
.thursday...southwest winds 10 to 15 knots. showers likely
thursday night. waves 1 to 3 feet.
$$
(5/17)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/26/2026 3:36 PM America/New_York.
Valid through 9/26/2026 10:15 PM America/New_York.
fzus61 kcle 261936
glfle
expires:202609270215;;101107
open lake forecast for lake erie
national weather service cleveland oh
336 pm edt sat sep 26 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...
high pressure of 30.20 inches will persist over the great lakes
through monday before building off to the east on tuesday. a weak
cold front will approach the region from the west beginning on
wednesday.
lez162-163-270215-
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-
336 pm edt sat sep 26 2026
.tonight...northeast winds 10 to 15 knots becoming north. waves
1 to 2 feet.
.sunday...north winds 5 to 15 knots. waves 1 to 2 feet.
.sunday night...north winds 10 to 15 knots. waves 1 to 3 feet.
.monday...north winds 5 to 15 knots becoming northwest less than
10 knots. waves 2 feet or less.
.monday night...north winds less than 10 knots. waves 1 foot or
less.
.tuesday...light and variable winds becoming south around
10 knots. waves 1 foot or less.
.wednesday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less.
.thursday...southwest winds 10 to 15 knots becoming west. a
chance of showers during the day, then showers likely thursday
night. waves 1 to 2 feet.
$$
(6/17)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/26/2026 3:40 PM America/New_York.
Valid through 9/26/2026 11:45 PM America/New_York.
fzus63 kdtx 261940
glfsc
expires:202609270345;;101285
lake st clair forecast
national weather service detroit/pontiac mi
340 pm edt sat sep 26 2026
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...high pressure, 30.30 inches, holds over the great
lakes through tuesday. this will maintain light winds and dry
weather through this period.
lcz460-270345-
lake st clair-
340 pm edt sat sep 26 2026
.tonight...north winds 10 to 15 knots diminishing to 5 to 10 knots
early in the morning. mostly clear. waves 2 feet or less.
.sunday...north winds 5 to 10 knots increasing to 10 to 15 knots in
the afternoon. sunny. waves 2 feet or less.
.sunday night...north winds 10 to 15 knots. mostly clear. waves 2
feet or less.
.monday...north winds 10 to 15 knots diminishing to 5 to 10 knots in
the late morning and afternoon. mostly sunny. waves 2 feet or less.
.monday night...northeast winds 5 to 10 knots becoming light and
variable. clear. waves 2 feet or less.
.tuesday...light and variable winds becoming south 5 to 10 knots in
the afternoon and evening. mostly sunny becoming sunny in the
afternoon becoming mostly clear. patchy fog in the morning. waves 2
feet or less.
.wednesday...south winds 5 to 10 knots. partly cloudy. a chance of
showers. waves 2 feet or less.
.thursday...southwest winds 10 to 15 knots. mostly cloudy with a
chance of showers. waves 2 feet or less.
$$
(7/17)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/26/2026 3:40 PM America/New_York.
Valid through 9/26/2026 11:45 PM America/New_York.
fzus63 kdtx 261940
glflh
expires:202609270345;;101237
open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt sat sep 26 2026
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...high pressure, 30.30 inches, holds over the great
lakes through tuesday. this will maintain light winds and dry
weather through this period.
lhz361-270345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
340 pm edt sat sep 26 2026
.tonight...light and variable winds. patchy fog after midnight.
waves 2 feet or less.
.sunday...northeast winds 5 to 10 knots in the morning becoming
light and variable. patchy fog in the morning. waves 2 feet or
less.
.sunday night...light and variable winds becoming northwest 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.monday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less.
.monday night...light and variable winds. patchy fog after
midnight. waves nearly calm.
.tuesday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon...then veering to the south late
in the evening. patchy fog in the morning. a chance of showers
late in the evening. waves 2 feet or less.
.wednesday...south winds 5 to 10 knots. a chance of showers.
waves 2 feet or less.
.thursday...southwest winds 5 to 10 knots increasing to 10 to
15 knots early in the evening...then veering to the west by
midnight. a chance of showers. waves 1 to 3 feet.
$$
(8/17)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/26/2026 3:40 PM America/New_York.
Valid through 9/26/2026 11:45 PM America/New_York.
fzus63 kdtx 261940
glflh
expires:202609270345;;101238
open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt sat sep 26 2026
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...high pressure, 30.30 inches, holds over the great
lakes through tuesday. this will maintain light winds and dry
weather through this period.
lhz362-363-270345-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
340 pm edt sat sep 26 2026
.tonight...north winds 5 to 10 knots. waves 2 feet or less.
.sunday...north winds 5 to 10 knots. waves 2 feet or less.
.sunday night...north winds 5 to 10 knots. waves 2 feet or less.
.monday...north winds 5 to 10 knots. waves 2 feet or less.
.monday night...light and variable winds. waves 2 feet or less.
.tuesday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon...then becoming south 10 to
15 knots late in the evening. waves 2 feet or less.
.wednesday...south winds 10 to 15 knots decreasing to 5 to
10 knots by midnight. a chance of showers. waves 1 to 3 feet.
.thursday...southwest winds 5 to 10 knots increasing to 10 to
15 knots. a chance of showers. waves 1 to 3 feet building to 2 to
4 feet.
$$
(9/17)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/26/2026 3:40 PM America/New_York.
Valid through 9/26/2026 11:45 PM America/New_York.
fzus63 kdtx 261940
glflh
expires:202609270345;;101239
open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt sat sep 26 2026
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...high pressure, 30.30 inches, holds over the great
lakes through tuesday. this will maintain light winds and dry
weather through this period.
lhz462>464-270345-
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-
340 pm edt sat sep 26 2026
.tonight...north winds 10 to 15 knots becoming northeast 5 to
10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight.
.sunday...northeast winds 5 to 10 knots becoming north 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet late in the
afternoon.
.sunday night...north winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight.
.monday...north winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. waves 2 feet or less.
.monday night...north winds 5 to 10 knots becoming light and
variable. waves 2 feet or less.
.tuesday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon...then becoming south 10 to
15 knots late in the evening. waves 2 feet or less.
.wednesday...south winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet.
.thursday...southwest winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet building to 2 to 4 feet .
$$
(10/17)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/26/2026 2:53 PM US/Central.
Valid through 9/26/2026 10:30 PM US/Central.
fzus63 kmkx 261953
glflm
expires:202609270330;;101438
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt sat sep 26 2026
for waters beyond five nautical miles of shore on lake michigan.
waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.
.synopsis...
high pressure of 30.3 inches centered near the ontario/quebec
border will pull away to the east today into sunday. high
pressure of 30.1 inches will remain overhead through at least
monday though, keeping the weather dry and winds on the lighter
side this weekend into early next week.
breezy southerly winds are expected tuesday through thursday next
week, as high pressure departs to the east ahead of an approaching
trough. wind gust to 25 knots are possible along with building
waves, particularly across central and northern portions of the
lake.
lmz080-669-671-673-675-777-779-870-872-874-876-878-270330-
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-
253 pm cdt sat sep 26 2026
sheboygan wi to pentwater mi south...
.tonight...northeast winds 5 to 10 kt becoming east. waves 1 to
2 ft.
.sunday...northeast winds 5 to 10 kt becoming north. waves 1 to
2 ft.
.sunday night...north winds 10 to 20 kt diminishing to 5 to
10 kt. waves 1 to 3 ft.
.monday...northeast winds 5 to 10 kt becoming north. waves 1 to
2 ft.
.monday night...northeast winds 10 to 15 kt veering to southeast
less than 10 kt overnight. waves 1 to 2 ft.
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 1 to 3 ft.
.tuesday night...south winds 10 to 20 kt. waves 3 to 5 ft.
.wednesday...south winds 10 to 20 kt. chance of showers. waves
3 to 5 ft.
.thursday...southwest winds 10 to 20 kt. showers likely. waves
2 to 4 ft.
$$
(11/17)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/26/2026 2:53 PM US/Central.
Valid through 9/26/2026 10:30 PM US/Central.
fzus63 kmkx 261953
glflm
expires:202609270330;;101437
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt sat sep 26 2026
for waters beyond five nautical miles of shore on lake michigan.
waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.
.synopsis...
high pressure of 30.3 inches centered near the ontario/quebec
border will pull away to the east today into sunday. high
pressure of 30.1 inches will remain overhead through at least
monday though, keeping the weather dry and winds on the lighter
side this weekend into early next week.
breezy southerly winds are expected tuesday through thursday next
week, as high pressure departs to the east ahead of an approaching
trough. wind gust to 25 knots are possible along with building
waves, particularly across central and northern portions of the
lake.
lmz261-362-364-366-563-565-567-868-270330-
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-
253 pm cdt sat sep 26 2026
sheboygan wi to pentwater mi north...
.tonight...northeast winds 5 to 10 kt veering to southeast. waves
1 ft or less.
.sunday...southeast winds less than 10 kt backing to northeast
late in the morning, then becoming north early in the afternoon
becoming northwest late. waves 1 to 2 ft.
.sunday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft.
.monday...north winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 ft or less.
.monday night...northeast winds 5 to 10 kt veering to south.
waves 1 ft or less.
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 ft or less building to 1 to 3 ft.
.tuesday night...south winds 10 to 20 kt. chance of showers.
waves 3 to 5 ft.
.wednesday...southwest winds 10 to 20 kt becoming south. chance
of showers. waves 3 to 5 ft.
.thursday...southwest winds 10 to 20 kt increasing to 30 kt.
chance of showers. waves 2 to 4 ft.
$$
(12/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/26/2026 4:01 PM America/New_York.
Valid through 9/27/2026 4:00 AM America/New_York.
fzus63 kmqt 262001
glfls
expires:202609270800;;101830
open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat sep 26 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...
a broad area of 30.3 inch high pressure over james bay today shifts
east toward northern quebec tonight while a 29.4 inch low deepens to
29.3 inches over northern saskatchewan and a 29.3 inch nor'easter
churns off the coast of long island. sunday, lake superior will be
between the 30.3 inch high over the canadian maritimes, the canadian
low over the manitoba/nunuvut line at 29.5 inches, the nor'easter
over new jersey at 29.7 inches, and a high pressure movign from the
rockies to the dakotas at 30.1 inches. the latter high moves
directly over the lake monday as a 29.7 inch low develops over
colorado. this low ejects northeast late monday through tuesday,
reaching northern ontario at 29.7 inches late tuesday. wednesday,
lake superior will be between a 29.5 inch low over northern manitoba
and a 30.1 inch high off the coast of the carolinas. thursday, the
low will cross hudson bay, dragging along a 29.7 inch trough across
lake superior.
lsz162-270800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat sep 26 2026 /301 pm cdt sat sep 26 2026/
.late this afternoon...northeast winds 10 to 20 knots. waves calm
to 2 feet.
.tonight...east winds 5 to 15 knots veering south after midnight.
a chance of showers. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots veering southwest in the
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet.
.sunday night...west winds 5 to 15 knots veering north late.
waves calm to 2 feet.
.monday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet.
.monday night...east winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet.
.tuesday...south winds 10 to 20 knots veering southwest by mid
afternoon. showers likely. waves calm to 2 feet.
.tuesday night...southwest winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet.
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.
.thursday...west winds 10 to 20 knots veering northwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
$$
(13/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/26/2026 4:01 PM America/New_York.
Valid through 9/27/2026 4:00 AM America/New_York.
fzus63 kmqt 262001
glfls
expires:202609270800;;101831
open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat sep 26 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...
a broad area of 30.3 inch high pressure over james bay today shifts
east toward northern quebec tonight while a 29.4 inch low deepens to
29.3 inches over northern saskatchewan and a 29.3 inch nor'easter
churns off the coast of long island. sunday, lake superior will be
between the 30.3 inch high over the canadian maritimes, the canadian
low over the manitoba/nunuvut line at 29.5 inches, the nor'easter
over new jersey at 29.7 inches, and a high pressure movign from the
rockies to the dakotas at 30.1 inches. the latter high moves
directly over the lake monday as a 29.7 inch low develops over
colorado. this low ejects northeast late monday through tuesday,
reaching northern ontario at 29.7 inches late tuesday. wednesday,
lake superior will be between a 29.5 inch low over northern manitoba
and a 30.1 inch high off the coast of the carolinas. thursday, the
low will cross hudson bay, dragging along a 29.7 inch trough across
lake superior.
lsz263-270800-
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 pm edt sat sep 26 2026
.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet.
.tonight...southeast winds 5 to 15 knots veering south after
midnight. a slight chance of showers after midnight. waves calm
to 2 feet.
.sunday...south winds 5 to 15 knots veering southwest in the
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet.
.sunday night...west winds 5 to 15 knots diminishing to less than
10 knots after midnight, then becoming north 5 to 15 knots late.
waves calm to 2 feet.
.monday...north winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet.
.monday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet.
.tuesday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. showers likely by mid afternoon. waves
calm to 2 feet.
.tuesday night...southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a chance of showers. waves calm to
2 feet.
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.
.thursday...west winds 15 to 25 knots veering northwest. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
1 to 3 feet.
$$
(14/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/26/2026 4:01 PM America/New_York.
Valid through 9/27/2026 4:00 AM America/New_York.
fzus63 kmqt 262001
glfls
expires:202609270800;;101832
open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat sep 26 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...
a broad area of 30.3 inch high pressure over james bay today shifts
east toward northern quebec tonight while a 29.4 inch low deepens to
29.3 inches over northern saskatchewan and a 29.3 inch nor'easter
churns off the coast of long island. sunday, lake superior will be
between the 30.3 inch high over the canadian maritimes, the canadian
low over the manitoba/nunuvut line at 29.5 inches, the nor'easter
over new jersey at 29.7 inches, and a high pressure movign from the
rockies to the dakotas at 30.1 inches. the latter high moves
directly over the lake monday as a 29.7 inch low develops over
colorado. this low ejects northeast late monday through tuesday,
reaching northern ontario at 29.7 inches late tuesday. wednesday,
lake superior will be between a 29.5 inch low over northern manitoba
and a 30.1 inch high off the coast of the carolinas. thursday, the
low will cross hudson bay, dragging along a 29.7 inch trough across
lake superior.
lsz264-270800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt sat sep 26 2026
.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet.
.tonight...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet.
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet.
.sunday night...west winds 5 to 15 knots diminishing to less than
10 knots after midnight, then becoming north 5 to 15 knots late.
waves calm to 2 feet.
.monday...north winds 5 to 15 knots becoming east less than
10 knots by mid afternoon. waves calm to 2 feet.
.monday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet.
.tuesday...south winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a chance of showers. waves calm to 2 feet.
.tuesday night...southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. showers likely through midnight,
then a chance of showers after midnight. waves calm to 2 feet.
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.
.thursday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet.
$$
(15/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/26/2026 4:01 PM America/New_York.
Valid through 9/27/2026 4:00 AM America/New_York.
fzus63 kmqt 262001
glfls
expires:202609270800;;101833
open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat sep 26 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...
a broad area of 30.3 inch high pressure over james bay today shifts
east toward northern quebec tonight while a 29.4 inch low deepens to
29.3 inches over northern saskatchewan and a 29.3 inch nor'easter
churns off the coast of long island. sunday, lake superior will be
between the 30.3 inch high over the canadian maritimes, the canadian
low over the manitoba/nunuvut line at 29.5 inches, the nor'easter
over new jersey at 29.7 inches, and a high pressure movign from the
rockies to the dakotas at 30.1 inches. the latter high moves
directly over the lake monday as a 29.7 inch low develops over
colorado. this low ejects northeast late monday through tuesday,
reaching northern ontario at 29.7 inches late tuesday. wednesday,
lake superior will be between a 29.5 inch low over northern manitoba
and a 30.1 inch high off the coast of the carolinas. thursday, the
low will cross hudson bay, dragging along a 29.7 inch trough across
lake superior.
lsz265-270800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt sat sep 26 2026
.late this afternoon...southeast winds 10 to 20 knots. waves calm
to 2 feet.
.tonight...southeast winds 10 to 20 knots veering south after
midnight, then diminishing to 5 to 15 knots late. waves calm to
2 feet.
.sunday...south winds 5 to 15 knots. waves calm to 2 feet.
.sunday night...southwest winds 5 to 15 knots veering northwest
late. waves calm to 2 feet.
.monday...north winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet.
.monday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves calm to 2 feet.
.tuesday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers by mid afternoon.
waves calm to 2 feet.
.tuesday night...south winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. showers likely through midnight,
then a chance of showers after midnight. waves calm to 2 feet.
.wednesday...southwest winds 10 to 20 knots. waves calm to
2 feet.
.thursday...west gales to 35 knots becoming northwest 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet.
$$
(16/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/26/2026 4:01 PM America/New_York.
Valid through 9/27/2026 4:00 AM America/New_York.
fzus63 kmqt 262001
glfls
expires:202609270800;;101834
open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat sep 26 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...
a broad area of 30.3 inch high pressure over james bay today shifts
east toward northern quebec tonight while a 29.4 inch low deepens to
29.3 inches over northern saskatchewan and a 29.3 inch nor'easter
churns off the coast of long island. sunday, lake superior will be
between the 30.3 inch high over the canadian maritimes, the canadian
low over the manitoba/nunuvut line at 29.5 inches, the nor'easter
over new jersey at 29.7 inches, and a high pressure movign from the
rockies to the dakotas at 30.1 inches. the latter high moves
directly over the lake monday as a 29.7 inch low develops over
colorado. this low ejects northeast late monday through tuesday,
reaching northern ontario at 29.7 inches late tuesday. wednesday,
lake superior will be between a 29.5 inch low over northern manitoba
and a 30.1 inch high off the coast of the carolinas. thursday, the
low will cross hudson bay, dragging along a 29.7 inch trough across
lake superior.
lsz266-270800-
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 pm edt sat sep 26 2026
.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet.
.tonight...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming southwest 5 to 15 knots
late. waves calm to 2 feet.
.sunday night...west winds 5 to 15 knots veering north late.
waves calm to 2 feet.
.monday...north winds 5 to 15 knots diminishing to less than
10 knots by mid afternoon. waves calm to 2 feet.
.monday night...south winds 5 to 15 knots. waves calm to 2 feet.
.tuesday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 1 to 3 feet.
.tuesday night...south winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. showers likely through midnight,
then a chance of showers after midnight. waves 1 to 3 feet.
.wednesday...southwest winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.thursday...west winds 20 to 30 knots veering northwest. a chance
of showers. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet.
$$
(17/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/26/2026 4:01 PM America/New_York.
Valid through 9/27/2026 4:00 AM America/New_York.
fzus63 kmqt 262001
glfls
expires:202609270800;;101835
open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat sep 26 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...
a broad area of 30.3 inch high pressure over james bay today shifts
east toward northern quebec tonight while a 29.4 inch low deepens to
29.3 inches over northern saskatchewan and a 29.3 inch nor'easter
churns off the coast of long island. sunday, lake superior will be
between the 30.3 inch high over the canadian maritimes, the canadian
low over the manitoba/nunuvut line at 29.5 inches, the nor'easter
over new jersey at 29.7 inches, and a high pressure movign from the
rockies to the dakotas at 30.1 inches. the latter high moves
directly over the lake monday as a 29.7 inch low develops over
colorado. this low ejects northeast late monday through tuesday,
reaching northern ontario at 29.7 inches late tuesday. wednesday,
lake superior will be between a 29.5 inch low over northern manitoba
and a 30.1 inch high off the coast of the carolinas. thursday, the
low will cross hudson bay, dragging along a 29.7 inch trough across
lake superior.
lsz267-270800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt sat sep 26 2026
.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet.
.tonight...east winds 5 to 15 knots veering south after midnight.
waves calm to 2 feet.
.sunday...south winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming north 5 to 15 knots
late. waves calm to 2 feet.
.sunday night...north winds 5 to 15 knots backing northwest after
midnight, then veering north late. waves calm to 2 feet.
.monday...north winds 5 to 15 knots backing northwest by mid
afternoon. waves calm to 2 feet.
.monday night...northwest winds 5 to 15 knots becoming south less
than 10 knots after midnight. waves calm to 2 feet.
.tuesday...south winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves calm to 2 feet.
.tuesday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. showers likely. waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.wednesday...southwest winds 10 to 20 knots backing south. a
chance of showers. waves building to 1 to 3 feet.
.thursday...west winds 15 to 25 knots becoming northwest 20 to
30 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet.
$$
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