(1/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/2/2026 9:45 AM America/New_York.
Valid through 9/2/2026 5:45 PM America/New_York.
fzus63 kdtx 021345
glflh
expires:202609022145;;777104
open lake forecast for lake huron
national weather service detroit/pontiac mi
945 am edt wed sep 2 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...frontal boundary over the northern great lakes
triggering periodic showers and thunderstorms will gradually sink
south to close out the work week.
lhz462>464-022145-
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-
945 am edt wed sep 2 2026
.rest of today...south winds 5 to 15 knots backing to the east
late in the afternoon. a chance of showers late in the morning...
then showers likely and a chance of thunderstorms in the
afternoon. waves 2 feet or less. wind and waves much higher in
and near thunderstorms.
.tonight...north winds 5 to 10 knots in the evening becoming
light and variable. a chance of showers and thunderstorms in the
evening. waves 2 feet or less.
.thursday...light and variable winds becoming north 5 to 10 knots
early in the afternoon. waves 2 feet or less.
.thursday night...light and variable winds. waves 2 feet or less.
.friday...light and variable winds becoming north 5 to 10 knots
late in the afternoon. waves 2 feet or less.
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less.
.sunday...east winds 5 to 10 knots. waves 2 feet or less.
$$
(2/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/2/2026 9:45 AM America/New_York.
Valid through 9/2/2026 5:45 PM America/New_York.
fzus63 kdtx 021345
glflh
expires:202609022145;;777103
open lake forecast for lake huron
national weather service detroit/pontiac mi
945 am edt wed sep 2 2026
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...frontal boundary over the northern great lakes
triggering periodic showers and thunderstorms will gradually sink
south to close out the work week.
lhz363-022145-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
945 am edt wed sep 2 2026
.rest of today...southwest winds 5 to 1t knots in the late
morning and early afternoon becoming light and variable. showers
likely late in the morning...then showers likely and a chance of
thunderstorms in the afternoon. waves 2 feet or less. wind and
waves much higher in and near thunderstorms.
.tonight...light and variable winds. a chance of showers in the
evening. waves 2 feet or less.
.thursday...light and variable winds. waves 2 feet or less.
.thursday night...light and variable winds. waves 2 feet or less.
.friday...light and variable winds. waves 2 feet or less.
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less.
.sunday...light and variable winds becoming southeast 5 to
10 knots by midnight. waves 2 feet or less.
$$
(3/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/2/2026 9:45 AM America/New_York.
Valid through 9/2/2026 5:45 PM America/New_York.
fzus63 kdtx 021345
glflh
expires:202609022145;;777102
open lake forecast for lake huron
national weather service detroit/pontiac mi
945 am edt wed sep 2 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...frontal boundary over the northern great lakes
triggering periodic showers and thunderstorms will gradually sink
south to close out the work week.
lhz361-362-022145-
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-
945 am edt wed sep 2 2026
.rest of today...west winds around 10 knots late in the morning
becoming light and variable. a chance of showers late in the
morning...then a chance of showers and thunderstorms in the
afternoon. waves 2 feet or less. wind and waves much higher in
and near thunderstorms.
.tonight...light and variable winds becoming west 5 to 10 knots
early in the morning. a chance of showers in the evening. waves
2 feet or less.
.thursday...northwest winds 5 to 10 knots until late afternoon
becoming light and variable. waves 2 feet or less.
.thursday night...light and variable winds. waves 2 feet or less.
.friday...light and variable winds. waves 2 feet or less.
.saturday...northeast winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less.
.sunday...light and variable winds becoming southeast 5 to
10 knots . waves 2 feet or less.
$$
(4/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/2/2026 9:03 AM US/Central.
Valid through 9/2/2026 10:15 PM US/Central.
fzus63 kmkx 021403
glflm
expires:202609030315;;777642
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 am cdt wed sep 2 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...
a stationary front will remain across the great lakes region through
friday. as this frontal boundary waffles north to south across the
lake from day to day, light and variable winds are expected across
the lake. generally east to northeast winds are expected north of
the front with east to southeast winds south of the front. on and
off thunderstorms will be possible along and north of this frontal
boundary through at least friday night.
heading into saturday high pressure around 30.1 inches builds
over the hudson bay and broad, while a low pressure of 29.6 inches moves
into the northern great plains. similar to earlier week storms,
widespread severe weather isn't anticipated, though isolated
stronger storms with hail and gusty winds are possible.
lmz261-362-364-366-563-565-567-868-030315-
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-
903 am cdt wed sep 2 2026
sheboygan wi to pentwater mi north...
.tonight...south winds 5 to 10 kt backing to northeast. slight
chance of showers and thunderstorms this evening. waves 1 ft or
less.
.thursday...east winds 5 to 10 kt becoming northeast. slight
chance of showers and thunderstorms. waves 1 ft or less.
.thursday night...northeast winds 5 to 10 kt becoming east.
chance of showers. waves 1 ft or less.
.friday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 ft or less.
.friday night...northeast winds 10 to 15 kt becoming east 5 to
10 kt. chance of showers. waves 1 ft or less.
.saturday...east winds 10 to 15 kt. waves 1 to 2 ft.
.saturday night...east winds 10 to 15 kt becoming southeast.
waves 1 to 2 ft building to 1 to 3 ft.
.sunday...south winds 10 to 15 kt. chance of showers. waves 1 to
3 ft.
.monday...southwest winds 10 to 20 kt. waves 2 to 4 ft.
$$
(5/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/2/2026 9:03 AM US/Central.
Valid through 9/2/2026 10:15 PM US/Central.
fzus63 kmkx 021403
glflm
expires:202609030315;;777643
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 am cdt wed sep 2 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...
a stationary front will remain across the great lakes region through
friday. as this frontal boundary waffles north to south across the
lake from day to day, light and variable winds are expected across
the lake. generally east to northeast winds are expected north of
the front with east to southeast winds south of the front. on and
off thunderstorms will be possible along and north of this frontal
boundary through at least friday night.
heading into saturday high pressure around 30.1 inches builds
over the hudson bay and broad, while a low pressure of 29.6 inches moves
into the northern great plains. similar to earlier week storms,
widespread severe weather isn't anticipated, though isolated
stronger storms with hail and gusty winds are possible.
lmz080-669-671-673-675-777-779-870-872-874-876-878-030315-
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-
903 am cdt wed sep 2 2026
sheboygan wi to pentwater mi south...
.tonight...southeast winds 10 to 15 kt. slight chance of showers
and thunderstorms this evening, then chance of showers and slight
chance of thunderstorms overnight. waves 1 to 2 ft.
.thursday...southeast winds 5 to 10 kt increasing to 10 to 15 kt,
then backing to northeast late. slight chance of showers and
thunderstorms in the morning, then chance of showers and slight
chance of thunderstorms in the afternoon. waves 1 ft or less.
.thursday night...northeast winds 5 to 10 kt becoming east.
showers likely with a chance of thunderstorms overnight. waves
1 ft or less.
.friday...east winds 5 to 10 kt. chance of showers. waves 1 to
2 ft.
.friday night...northeast winds 5 to 10 kt becoming east. showers
likely with a chance of thunderstorms overnight. waves 1 to 2 ft.
.saturday...east winds 10 to 15 kt diminishing to 5 to 10 kt.
chance of thunderstorms in the morning. waves 1 to 3 ft.
.saturday night...east winds 10 to 15 kt becoming southeast 10 to
20 kt. waves 1 to 2 ft building to 1 to 3 ft.
.sunday...southeast winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 1 to 3 ft.
.monday...south winds 10 to 20 kt. waves 2 to 4 ft.
$$
(6/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/2/2026 10:01 AM America/New_York.
Valid through 9/2/2026 4:00 PM America/New_York.
fzus63 kmqt 021401
glfls
expires:202609022000;;777511
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed sep 2 2026
for waters beyond 5 nautical miles of shore on lake superior.
waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.
.synopsis...
the
a 29.8 inch low will continue to slowly move east over eastern
ontario today reaching western quebec by thursday morning. a broad
29.9 inch trough over the upper great lakes will shift east as the
low departs ontario tonight and a 29.9 inch ridge will move into the
area, building to 30.0 inches by friday afternoon. ridging will
build to 30.1 inches for sunday night and monday.
lsz267-022000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt wed sep 2 2026
.rest of today...west winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves calm to 2 feet.
.tonight...west winds 5 to 15 knots. waves calm to 2 feet.
.thursday...west winds 5 to 15 knots veering northwest late.
waves calm to 2 feet.
.thursday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet.
.friday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet.
.friday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet.
.saturday...east winds 5 to 15 knots veering south. waves calm to
2 feet.
.sunday...south winds 5 to 15 knots becoming southeast 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet.
$$
(7/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/2/2026 10:01 AM America/New_York.
Valid through 9/2/2026 4:00 PM America/New_York.
fzus63 kmqt 021401
glfls
expires:202609022000;;777506
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed sep 2 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...
the
a 29.8 inch low will continue to slowly move east over eastern
ontario today reaching western quebec by thursday morning. a broad
29.9 inch trough over the upper great lakes will shift east as the
low departs ontario tonight and a 29.9 inch ridge will move into the
area, building to 30.0 inches by friday afternoon. ridging will
build to 30.1 inches for sunday night and monday.
lsz162-022000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt wed sep 2 2026 /900 am cdt wed sep 2 2026/
.rest of today...west winds 5 to 15 knots backing south late.
waves calm to 2 feet.
.tonight...west winds less than 10 knots becoming northeast 5 to
15 knots after midnight. waves calm to 2 feet.
.thursday...northeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon, then becoming northeast 15 to 25 knots
late. a slight chance of showers by mid afternoon. waves building
to 1 to 3 feet.
.thursday night...northeast winds 10 to 20 knots. a chance of
showers and thunderstorms. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet.
.friday...east winds 15 to 25 knots backing northeast by mid
afternoon. a slight chance of showers. waves building to 2 to
4 feet.
.friday night...northeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet.
.saturday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers and thunderstorms. waves calm to
2 feet.
.sunday...east winds 5 to 15 knots becoming northeast 15 to
25 knots. a chance of showers. waves building to 1 to 3 feet.
$$
(8/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/2/2026 10:01 AM America/New_York.
Valid through 9/2/2026 4:00 PM America/New_York.
fzus63 kmqt 021401
glfls
expires:202609022000;;777507
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed sep 2 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...
the
a 29.8 inch low will continue to slowly move east over eastern
ontario today reaching western quebec by thursday morning. a broad
29.9 inch trough over the upper great lakes will shift east as the
low departs ontario tonight and a 29.9 inch ridge will move into the
area, building to 30.0 inches by friday afternoon. ridging will
build to 30.1 inches for sunday night and monday.
lsz263-022000-
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-
1000 am edt wed sep 2 2026
.rest of today...northwest winds less than 10 knots becoming west
5 to 15 knots in the afternoon, then backing southwest late.
waves calm to 2 feet.
.tonight...southwest winds 5 to 15 knots becoming north less than
10 knots after midnight. waves calm to 2 feet.
.thursday...northeast winds 5 to 15 knots becoming east 15 to
25 knots late. waves calm to 2 feet.
.thursday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a chance of showers and a slight chance
of thunderstorms. waves calm to 2 feet.
.friday...east winds 10 to 20 knots. a slight chance of showers.
waves building to 1 to 3 feet.
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet.
.saturday...east winds 5 to 15 knots. a chance of showers and
thunderstorms. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots becoming northeast 15 to
25 knots. a chance of showers. waves building to 1 to 3 feet.
$$
(9/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/2/2026 10:01 AM America/New_York.
Valid through 9/2/2026 4:00 PM America/New_York.
fzus63 kmqt 021401
glfls
expires:202609022000;;777508
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed sep 2 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...
the
a 29.8 inch low will continue to slowly move east over eastern
ontario today reaching western quebec by thursday morning. a broad
29.9 inch trough over the upper great lakes will shift east as the
low departs ontario tonight and a 29.9 inch ridge will move into the
area, building to 30.0 inches by friday afternoon. ridging will
build to 30.1 inches for sunday night and monday.
lsz264-022000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt wed sep 2 2026
.rest of today...west 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.
.tonight...west winds less than 10 knots veering north late.
waves calm to 2 feet.
.thursday...north winds less than 10 knots becoming northeast
5 to 15 knots in the afternoon, then veering east late. waves
calm to 2 feet.
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves calm to 2 feet.
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet.
.saturday...east winds 5 to 15 knots veering southeast. a chance
of showers. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots becoming northeast 15 to
25 knots. a chance of showers. waves building to 1 to 3 feet.
$$
(10/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/2/2026 10:01 AM America/New_York.
Valid through 9/2/2026 4:00 PM America/New_York.
fzus63 kmqt 021401
glfls
expires:202609022000;;777509
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed sep 2 2026
for waters beyond 5 nautical miles of shore on lake superior.
waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.
.synopsis...
the
a 29.8 inch low will continue to slowly move east over eastern
ontario today reaching western quebec by thursday morning. a broad
29.9 inch trough over the upper great lakes will shift east as the
low departs ontario tonight and a 29.9 inch ridge will move into the
area, building to 30.0 inches by friday afternoon. ridging will
build to 30.1 inches for sunday night and monday.
lsz265-022000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt wed sep 2 2026
.rest of today...west winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then veering north late. waves calm to
2 feet.
.tonight...west winds 5 to 15 knots. waves calm to 2 feet.
.thursday...northwest winds 5 to 15 knots veering east in the
afternoon, then increasing to 10 to 20 knots late. waves calm to
2 feet.
.thursday night...east winds 5 to 15 knots. a slight chance of
showers after midnight. waves calm to 2 feet.
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. waves building to 1 to 3 feet.
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet.
.saturday...east winds 10 to 20 knots veering south. a chance of
showers. waves calm to 2 feet.
.sunday...south winds 10 to 20 knots backing southeast. a chance
of showers. waves building to 1 to 3 feet.
$$
(11/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/2/2026 10:01 AM America/New_York.
Valid through 9/2/2026 4:00 PM America/New_York.
fzus63 kmqt 021401
glfls
expires:202609022000;;777510
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed sep 2 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...
the
a 29.8 inch low will continue to slowly move east over eastern
ontario today reaching western quebec by thursday morning. a broad
29.9 inch trough over the upper great lakes will shift east as the
low departs ontario tonight and a 29.9 inch ridge will move into the
area, building to 30.0 inches by friday afternoon. ridging will
build to 30.1 inches for sunday night and monday.
lsz266-022000-
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-
1000 am edt wed sep 2 2026
.rest of today...northwest winds 10 to 20 knots diminishing to
5 to 15 knots in the afternoon, then backing west late. waves
calm to 2 feet.
.tonight...west winds 5 to 15 knots. waves calm to 2 feet.
.thursday...northwest winds 5 to 15 knots veering northeast late.
waves calm to 2 feet.
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves calm to 2 feet.
.friday night...east winds 5 to 15 knots. waves calm to 2 feet.
.saturday...east winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots becoming southeast 10 to
20 knots. a chance of showers. waves building to 2 to 4 feet.
$$
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