New iWindsurf: Select your region for wind observations & forecasts:
North America |
Europe |
South America |
Australia & Oceania |
Asia |
Africa
(1/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/30/2026 9:36 PM America/New_York.
Valid through 8/31/2026 5:45 AM America/New_York.
fzus63 kdtx 310136
glflh
expires:202608310945;;638391
open lake forecast for lake huron
national weather service detroit/pontiac mi
936 pm edt sun aug 30 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 warm front develops over the great lakes tonight
into monday, bringing an unsettled period with showers and
storms. low pressure forming over the dakotas slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.
lhz361-310945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
936 pm edt sun aug 30 2026
.rest of tonight...east winds 5 to 10 knots. a chance of showers
after midnight. waves 2 feet or less.
.monday...southeast winds 10 to 15 knots decreasing to 5 to
10 knots in the afternoon. a chance of showers and thunderstorms.
waves 1 to 3 feet.
.monday night...east winds 5 to 10 knots. waves 1 to 3 feet.
.tuesday...west winds 5 to 10 knots until late afternoon becoming
light and variable. waves 2 feet or less.
.tuesday night...light and variable winds becoming south 5 to
10 knots by midnight...then veering to the southwest after
midnight. waves 2 feet or less.
.wednesday...west winds 5 to 10 knots. a chance of showers late
in the afternoon. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less.
.friday...light and variable winds becoming north 5 to 10 knots
in the late morning and early afternoon...then becoming light and
variable . waves 2 feet or less.
$$
(2/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/30/2026 9:36 PM America/New_York.
Valid through 8/31/2026 5:45 AM America/New_York.
fzus63 kdtx 310136
glflh
expires:202608310945;;638392
open lake forecast for lake huron
national weather service detroit/pontiac mi
936 pm edt sun aug 30 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 warm front develops over the great lakes tonight
into monday, bringing an unsettled period with showers and
storms. low pressure forming over the dakotas slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.
lhz362-363-310945-
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-
936 pm edt sun aug 30 2026
.rest of tonight...east winds 5 to 10 knots. a chance of showers
this evening...then a chance of showers and thunderstorms after
midnight. waves 2 feet or less.
.monday...southeast winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. a chance of showers and
thunderstorms in the morning...then a chance of showers in the
afternoon. waves 1 to 3 feet.
.monday night...southeast winds 10 to 15 knots decreasing to 5 to
10 knots by midnight...then veering to the southwest after
midnight. waves 1 to 3 feet.
.tuesday...west winds 5 to 10 knots early in the morning becoming
light and variable. waves 2 feet or less.
.tuesday night...southeast winds 5 to 10 knots veering to the
south in the late evening and overnight. waves 2 feet or less.
.wednesday...southwest winds 5 to 10 knots. a chance of showers.
waves 2 feet or less.
.thursday...north winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less.
.friday...light and variable winds becoming north 5 to 10 knots
in the late morning and early afternoon...then becoming light and
variable early in the evening becoming north 5 to 10 knots by
midnight. waves 2 feet or less.
$$
(3/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/30/2026 9:36 PM America/New_York.
Valid through 8/31/2026 5:45 AM America/New_York.
fzus63 kdtx 310136
glflh
expires:202608310945;;638393
open lake forecast for lake huron
national weather service detroit/pontiac mi
936 pm edt sun aug 30 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 warm front develops over the great lakes tonight
into monday, bringing an unsettled period with showers and
storms. low pressure forming over the dakotas slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.
lhz462>464-310945-
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-
936 pm edt sun aug 30 2026
.rest of tonight...southeast winds 10 to 15 knots becoming south
5 to 10 knots early in the morning. showers likely and a chance
of thunderstorms. a chance of waterspouts after midnight. waves
1 to 3 feet.
.monday...south winds 5 to 10 knots increasing to 10 to 15 knots
late in the afternoon. a chance of waterspouts in the morning. a
chance of showers. waves 1 to 3 feet.
.monday night...south winds 10 to 15 knots becoming southwest
5 to 10 knots after midnight. waves 1 to 3 feet.
.tuesday...southwest winds 5 to 10 knots. waves 2 feet or less.
.tuesday night...south winds 5 to 10 knots. a chance of showers.
waves 2 feet or less.
.wednesday...southwest winds 5 to 10 knots veering to the
northeast late in the afternoon. a chance of showers. a chance of
thunderstorms late in the morning. waves 2 feet or less.
.thursday...north winds 5 to 10 knots becoming light and
variable. waves 2 feet or less.
.friday...north winds 5 to 10 knots. waves 2 feet or less.
$$
(4/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 8/30/2026 7:54 PM US/Central.
Valid through 8/31/2026 4:15 AM US/Central.
fzus63 kmkx 310054
glflm
expires:202608310915;;636790
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
754 pm cdt sun aug 30 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 warm front is draped over central lake michigan this evening,
resulting in generally southerly winds across the southern half of
the waters with northeasterly breezes further north. the boundary
will attempt to work northward from the remainder of the overnight
through monday, bringing a breezy south-southwest wind shift in its
wake. areas remaining north of the front will continue to see east-
northeast winds. similar to today, south-southwest winds will become
breezy once again on monday afternoon, when 25-30 knot gusts are
anticipated over at least the southern two-thirds of the waters.
gales are not anticipated. periods of showers and storms continue
through the overnight hours tonight, with severe weather not
anticipated.
29.5 inch low pressure will shift from the canadian great plains
into ontario monday night through tuesday, ultimately reaching the
southern shores of the hudson bay by daybreak wednesday. the
advancing low will pull a slow-moving cold front over lake
michigan in the process, with north-northeast winds establishing
in the wake of the boundary. whether the front clears entirely
south of the waters or stalls out somewhere over the lake remains
uncertain. with the front in the vicinity, shower and storm
chances thus continue monday night through at least mid-week. a
few stronger storms with gusty winds and hail are possible during
this time frame. if the front remains close to stationary through
the first half of the week, it will ultimately clear south of lake
michigan by thursday, bringing northeast winds for the end of the
week.
lmz080-669-671-673-675-777-779-870-872-874-876-878-310915-
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-
754 pm cdt sun aug 30 2026
sheboygan wi to pentwater mi south...
.rest of tonight...south winds 10 to 20 kt. chance of showers and
slight chance of thunderstorms this evening, then slight chance
of showers and thunderstorms overnight. waves 3 to 5 ft subsiding
to 2 to 4 ft.
.monday...south winds 15 to 25 kt. chance of showers and
thunderstorms in the morning, then slight chance of showers and
thunderstorms in the afternoon. waves 3 to 5 ft building to 4 to
6 ft occasionally to 8 ft.
.monday night...southwest winds 15 to 25 kt diminishing to 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.tuesday...southwest winds 10 to 15 kt becoming south. waves 1 to
3 ft.
.tuesday night...south winds 10 to 15 kt becoming southwest.
chance of showers overnight. waves 1 to 2 ft.
.wednesday...southwest winds 10 to 15 kt becoming south. waves
1 to 2 ft.
.wednesday night...southeast winds 10 to 15 kt backing to north
5 to 10 kt. chance of showers and thunderstorms. waves 1 to 2 ft.
.thursday...north winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft.
.friday...east winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 2 ft.
$$
(5/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 8/30/2026 7:54 PM US/Central.
Valid through 8/31/2026 4:15 AM US/Central.
fzus63 kmkx 310054
glflm
expires:202608310915;;636789
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
754 pm cdt sun aug 30 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 warm front is draped over central lake michigan this evening,
resulting in generally southerly winds across the southern half of
the waters with northeasterly breezes further north. the boundary
will attempt to work northward from the remainder of the overnight
through monday, bringing a breezy south-southwest wind shift in its
wake. areas remaining north of the front will continue to see east-
northeast winds. similar to today, south-southwest winds will become
breezy once again on monday afternoon, when 25-30 knot gusts are
anticipated over at least the southern two-thirds of the waters.
gales are not anticipated. periods of showers and storms continue
through the overnight hours tonight, with severe weather not
anticipated.
29.5 inch low pressure will shift from the canadian great plains
into ontario monday night through tuesday, ultimately reaching the
southern shores of the hudson bay by daybreak wednesday. the
advancing low will pull a slow-moving cold front over lake
michigan in the process, with north-northeast winds establishing
in the wake of the boundary. whether the front clears entirely
south of the waters or stalls out somewhere over the lake remains
uncertain. with the front in the vicinity, shower and storm
chances thus continue monday night through at least mid-week. a
few stronger storms with gusty winds and hail are possible during
this time frame. if the front remains close to stationary through
the first half of the week, it will ultimately clear south of lake
michigan by thursday, bringing northeast winds for the end of the
week.
lmz261-362-364-366-563-565-567-868-310915-
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-
754 pm cdt sun aug 30 2026
sheboygan wi to pentwater mi north...
.rest of tonight...southeast winds 10 to 20 kt. slight chance of
showers and thunderstorms this evening, then chance of showers
and thunderstorms overnight. waves 3 to 5 ft subsiding to 2 to
4 ft.
.monday...south winds 15 to 25 kt increasing to 30 kt. chance of
showers and thunderstorms in the morning. waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft.
.monday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt late in the evening, then diminishing to 10 to 15 kt after
midnight becoming west late. waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft.
.tuesday...south winds 10 to 15 kt. waves 1 to 3 ft.
.tuesday night...southwest winds 10 to 15 kt becoming west 5 to
10 kt. waves 1 to 2 ft.
.wednesday...west winds 10 to 15 kt veering to north. waves 1 to
2 ft.
.wednesday night...northeast winds 10 to 15 kt diminishing to
5 to 10 kt. chance of showers. waves 1 ft or less.
.thursday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 ft or less.
.friday...east winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 2 ft.
$$
(6/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/30/2026 10:01 PM America/New_York.
Valid through 8/31/2026 4:00 AM America/New_York.
fzus63 kmqt 310201
glfls
expires:202608310800;;639181
open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun aug 30 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 29.6 inch low over the northern plains this afternoon lifts into
the canadian prairies tonight and deepens to 29.3 inches by monday
morning. in response, troughing deepens to 29.8 inches over lake
superior into early monday, lingering through tuesday as the low
crosses northern ontario at around 29.6 inches. ridging of around
29.9 inches then returns to the lake on wednesday and strengthens to
30.0 inches through friday.
lsz266-310800-
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 pm edt sun aug 30 2026
.rest of tonight...east winds 10 to 20 knots veering southeast
late. a chance of showers and a slight chance of thunderstorms
after midnight. waves calm to 2 feet building to 1 to 3 feet.
.monday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. a chance of showers and a slight
chance of thunderstorms. waves building to 2 to 4 feet.
.monday night...west winds 10 to 20 knots. a slight chance of
thunderstorms through midnight. a slight chance of showers. waves
subsiding to calm to 2 feet.
.tuesday...south winds 10 to 20 knots veering southwest by mid
afternoon. waves building to 2 to 4 feet.
.tuesday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet.
.wednesday...northwest winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet.
.thursday...north winds 5 to 15 knots veering east. waves calm to
2 feet.
.friday...east winds 5 to 15 knots. waves calm to 2 feet.
$$
(7/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/30/2026 10:01 PM America/New_York.
Valid through 8/31/2026 4:00 AM America/New_York.
fzus63 kmqt 310201
glfls
expires:202608310800;;639182
open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun aug 30 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 29.6 inch low over the northern plains this afternoon lifts into
the canadian prairies tonight and deepens to 29.3 inches by monday
morning. in response, troughing deepens to 29.8 inches over lake
superior into early monday, lingering through tuesday as the low
crosses northern ontario at around 29.6 inches. ridging of around
29.9 inches then returns to the lake on wednesday and strengthens to
30.0 inches through friday.
lsz267-310800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt sun aug 30 2026
.rest of tonight...east winds 10 to 20 knots becoming southeast
15 to 25 knots late. a chance of showers and a slight chance of
thunderstorms after midnight. waves calm to 2 feet building to
1 to 3 feet.
.monday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of showers and thunderstorms. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.monday night...southwest winds 10 to 20 knots veering west late.
a slight chance of thunderstorms through midnight. a chance of
showers. waves subsiding to calm to 2 feet.
.tuesday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet.
.tuesday night...west winds 10 to 20 knots. waves calm to 2 feet.
.wednesday...west winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves calm to 2 feet.
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet.
.thursday...northwest winds 5 to 15 knots veering east. waves
calm to 2 feet.
.friday...east winds 5 to 15 knots. waves calm to 2 feet.
$$
(8/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/30/2026 10:01 PM America/New_York.
Valid through 8/31/2026 4:00 AM America/New_York.
fzus63 kmqt 310201
glfls
expires:202608310800;;639177
open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun aug 30 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 29.6 inch low over the northern plains this afternoon lifts into
the canadian prairies tonight and deepens to 29.3 inches by monday
morning. in response, troughing deepens to 29.8 inches over lake
superior into early monday, lingering through tuesday as the low
crosses northern ontario at around 29.6 inches. ridging of around
29.9 inches then returns to the lake on wednesday and strengthens to
30.0 inches through friday.
lsz162-310800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sun aug 30 2026 /901 pm cdt sun aug 30 2026/
.rest of tonight...east winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of showers and thunderstorms. waves 2 to
4 feet subsiding to 1 to 3 feet.
.monday...east winds 5 to 15 knots backing northeast in the
afternoon, then becoming southwest 10 to 20 knots late. a slight
chance of showers and thunderstorms through early afternoon.
waves subsiding to calm to 2 feet.
.monday night...west winds 10 to 20 knots becoming southwest 5 to
15 knots after midnight. waves calm to 2 feet.
.tuesday...southwest winds 15 to 25 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.tuesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet.
.wednesday...northwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet.
.wednesday night...northeast winds 5 to 15 knots. waves calm to
2 feet.
.thursday...east winds 15 to 25 knots becoming northeast 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.friday...northeast winds 10 to 20 knots. waves calm to 2 feet.
$$
(9/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/30/2026 10:01 PM America/New_York.
Valid through 8/31/2026 4:00 AM America/New_York.
fzus63 kmqt 310201
glfls
expires:202608310800;;639178
open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun aug 30 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 29.6 inch low over the northern plains this afternoon lifts into
the canadian prairies tonight and deepens to 29.3 inches by monday
morning. in response, troughing deepens to 29.8 inches over lake
superior into early monday, lingering through tuesday as the low
crosses northern ontario at around 29.6 inches. ridging of around
29.9 inches then returns to the lake on wednesday and strengthens to
30.0 inches through friday.
lsz263-310800-
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 pm edt sun aug 30 2026
.rest of tonight...east winds 10 to 20 knots. a chance of showers
by midnight. a chance of thunderstorms. showers likely after
midnight. waves 1 to 3 feet.
.monday...east winds 10 to 20 knots becoming southeast 5 to
15 knots in the afternoon, then veering west late. a slight
chance of showers and thunderstorms through early afternoon.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.monday night...west winds 5 to 15 knots backing southwest late.
waves subsiding to calm to 2 feet.
.tuesday...southwest winds 15 to 25 knots. waves building to 2 to
4 feet.
.tuesday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...northwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet.
.wednesday night...east winds less than 10 knots. waves calm to
2 feet.
.thursday...east winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of showers. waves calm to 2 feet.
.friday...east winds 5 to 15 knots. waves calm to 2 feet.
$$
(10/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/30/2026 10:01 PM America/New_York.
Valid through 8/31/2026 4:00 AM America/New_York.
fzus63 kmqt 310201
glfls
expires:202608310800;;639179
open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun aug 30 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 29.6 inch low over the northern plains this afternoon lifts into
the canadian prairies tonight and deepens to 29.3 inches by monday
morning. in response, troughing deepens to 29.8 inches over lake
superior into early monday, lingering through tuesday as the low
crosses northern ontario at around 29.6 inches. ridging of around
29.9 inches then returns to the lake on wednesday and strengthens to
30.0 inches through friday.
lsz264-310800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt sun aug 30 2026
.rest of tonight...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of showers and a slight chance
of thunderstorms after midnight. waves calm to 2 feet building to
1 to 3 feet.
.monday...east winds 10 to 20 knots veering southeast in the
afternoon, then diminishing to 5 to 15 knots late. a chance of
showers and a slight chance of thunderstorms. waves building to
2 to 4 feet.
.monday night...west winds 5 to 15 knots backing southwest late.
waves subsiding to calm to 2 feet.
.tuesday...southwest winds 15 to 25 knots. waves building to 2 to
4 feet.
.tuesday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...northwest winds 5 to 15 knots becoming west less
than 10 knots by mid afternoon. waves calm to 2 feet.
.wednesday night...west winds less than 10 knots veering north
after midnight. waves calm to 2 feet.
.thursday...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 5 to 15 knots. waves calm to 2 feet.
$$
(11/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/30/2026 10:01 PM America/New_York.
Valid through 8/31/2026 4:00 AM America/New_York.
fzus63 kmqt 310201
glfls
expires:202608310800;;639180
open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun aug 30 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 29.6 inch low over the northern plains this afternoon lifts into
the canadian prairies tonight and deepens to 29.3 inches by monday
morning. in response, troughing deepens to 29.8 inches over lake
superior into early monday, lingering through tuesday as the low
crosses northern ontario at around 29.6 inches. ridging of around
29.9 inches then returns to the lake on wednesday and strengthens to
30.0 inches through friday.
lsz265-310800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt sun aug 30 2026
.rest of tonight...east winds 10 to 20 knots becoming southeast
15 to 25 knots after midnight. showers likely and a slight chance
of thunderstorms after midnight. waves calm to 2 feet building to
1 to 3 feet.
.monday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. a slight chance of showers. a slight
chance of thunderstorms by mid afternoon. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.monday night...west winds 10 to 20 knots. a slight chance of
showers through midnight. waves subsiding to calm to 2 feet.
.tuesday...southwest winds 10 to 20 knots becoming west 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet.
.tuesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...west winds 5 to 15 knots veering north by mid
afternoon. waves calm to 2 feet.
.wednesday night...north winds 5 to 15 knots. waves calm to
2 feet.
.thursday...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 10 to 20 knots becoming southeast 5 to
15 knots. waves calm to 2 feet.
$$
|