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 8/15/2026 9:44 AM America/New_York.
Valid through 8/15/2026 5:45 PM America/New_York.
fzus63 kdtx 151344
glflh
expires:202608152145;;233620
open lake forecast for lake huron
national weather service detroit/pontiac mi
944 am edt sat aug 15 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, 30.20 inches, currently centered over
northern lake huron will hold most of the day before sliding
southeast through the eastern lakes. the next low pressure system
will pass through the region tonight and sunday bringing the next
thunderstorm chances.
lhz361-152145-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
944 am edt sat aug 15 2026
.rest of today...east winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. waves 2 feet or less.
.tonight...southeast winds 10 to 15 knots. waves 2 to 4 feet.
.sunday...south winds 5 to 10 knots veering to the west early in
the afternoon. a chance of showers. waves 2 to 4 feet.
.sunday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots by midnight...then decreasing to 10 to 15 knots
after midnight. waves 3 to 5 feet.
.monday...northwest winds 5 to 10 knots. waves 1 to 3 feet.
.tuesday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then veering
to the west . a chance of showers. rain showers likely by
midnight. waves 1 to 3 feet.
.wednesday...north winds 5 to 10 knots increasing to 15 to
20 knots. showers likely early in the morning...then a chance of
showers until early evening. waves 1 to 3 feet building to 3 to
5 feet .
$$
(2/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/15/2026 9:44 AM America/New_York.
Valid through 8/15/2026 5:45 PM America/New_York.
fzus63 kdtx 151344
glflh
expires:202608152145;;233621
open lake forecast for lake huron
national weather service detroit/pontiac mi
944 am edt sat aug 15 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, 30.20 inches, currently centered over
northern lake huron will hold most of the day before sliding
southeast through the eastern lakes. the next low pressure system
will pass through the region tonight and sunday bringing the next
thunderstorm chances.
lhz362-363-152145-
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-
944 am edt sat aug 15 2026
.rest of today...east winds 5 to 10 knots. waves 2 feet or less.
.tonight...east winds 5 to 10 knots increasing to 10 to 15 knots
by midnight...then veering to the southeast early in the morning.
waves 1 to 3 feet building to 2 to 4 feet after midnight.
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and afternoon. a chance of showers in the
afternoon. waves 2 to 4 feet.
.sunday night...northwest winds 5 to 10 knots increasing to 15 to
20 knots in the late evening and overnight. waves 3 to 5 feet.
.monday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then becoming light and variable
late in the afternoon becoming west 5 to 10 knots late in the
evening. waves 3 to 5 feet subsiding to 2 feet or less late in
the afternoon.
.tuesday...southwest winds 5 to 10 knots becoming south 10 to
15 knots until early evening...then becoming southwest 5 to
10 knots by midnight. a chance of showers until early evening.
rain showers likely by midnight. waves 1 to 3 feet.
.wednesday...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots by midnight. showers likely early in the morning...
then a chance of showers and thunderstorms until early evening.
waves 1 to 3 feet building to 3 to 5 feet.
$$
(3/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/15/2026 9:44 AM America/New_York.
Valid through 8/15/2026 5:45 PM America/New_York.
fzus63 kdtx 151344
glflh
expires:202608152145;;233622
open lake forecast for lake huron
national weather service detroit/pontiac mi
944 am edt sat aug 15 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, 30.20 inches, currently centered over
northern lake huron will hold most of the day before sliding
southeast through the eastern lakes. the next low pressure system
will pass through the region tonight and sunday bringing the next
thunderstorm chances.
lhz462>464-152145-
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-
944 am edt sat aug 15 2026
.rest of today...east winds 5 to 10 knots late in the morning
becoming light and variable...then becoming east 5 to 10 knots
late in the afternoon. waves 2 feet or less.
.tonight...east winds 5 to 10 knots becoming southeast 10 to
15 knots late in the evening...then increasing to 15 to 20 knots
after midnight decreasing to 10 to 15 knots early in the morning.
waves 1 to 3 feet building to 2 to 4 feet after midnight.
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and afternoon.
.sunday night...west winds 5 to 10 knots becoming northwest 15 to
20 knots. waves 2 feet or less building to 3 to 5 feet in the
late evening and overnight.
.monday...northwest winds 10 to 15 knots becoming light and
variable. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
afternoon.
.tuesday...south winds 5 to 10 knots increasing to 10 to 15 knots
by midnight. waves 2 feet or less.
.wednesday...southwest winds 10 to 15 knots veering to the north
by midnight. showers likely until afternoon. a chance of
thunderstorms until early evening. waves 1 to 3 feet building to
3 to 5 feet.
$$
(4/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 8/15/2026 8:22 AM US/Central.
Valid through 8/15/2026 4:30 PM US/Central.
fzus63 kmkx 151322
glflm
expires:202608152130;;233267
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
822 am cdt sat aug 15 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...
30.2 inch high pressure is centered along the ontario-quebec
border this morning, resulting in generally light easterly winds
across the open waters. the high will progress into the
northeastern united states tonight as a cold front approaches from
the northern great plains, resulting in a brief period of south-
southeasterly winds this afternoon and tonight. the
aforementioned surface front will move across lake michigan early
sunday morning, with northwest winds becoming established by
sunday afternoon across the entirety of the lake. periods of
scattered showers and thunderstorms continue today into sunday
morning ahead of the front. severe weather is not anticipated.
a new area of 30.1 inch high pressure will build in from the
northern great plains late sunday night into monday, bringing
light and variable winds to the waters through the majority of
monday and monday evening. a slow-moving cold front will approach
from the northern great plains tuesday into wednesday, bringing
increasing southwest winds and chances for thunderstorms. precise
timing details will continue to be refined over coming forecasts,
though it does appear that a few stronger storms could be possible
over the southern half of the waters tuesday afternoon & night.
winds will trend light and variable behind the front from
wednesday night through the end of next week.
lmz261-362-364-366-563-565-567-868-152130-
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-
822 am cdt sat aug 15 2026
sheboygan wi to pentwater mi north...
.rest of today...east winds 10 to 20 kt. waves 3 to 5 ft.
.tonight...east winds 10 to 20 kt veering to south 10 to 15 kt.
slight chance of showers and thunderstorms overnight. waves 1 to
3 ft subsiding to 1 to 2 ft.
.sunday...west winds 10 to 15 kt becoming northwest 10 to 20 kt
late in the morning, then increasing to 15 to 25 kt early in the
afternoon becoming north to 30 kt late. chance of showers in the
morning. waves 1 to 2 ft building to 2 to 4 ft.
.sunday night...north winds to 30 kt diminishing to 10 to 20 kt
overnight. waves 2 to 4 ft.
.monday...northwest winds 10 to 15 kt backing to southwest 10 to
20 kt. waves 1 to 3 ft.
.monday night...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft.
.tuesday...southwest winds 15 to 25 kt increasing to 30 kt.
chance of showers. waves 2 to 4 ft.
.wednesday...north winds 15 to 25 kt increasing to 30 kt. chance
of showers. waves 3 to 5 ft.
$$
(5/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 8/15/2026 8:22 AM US/Central.
Valid through 8/15/2026 4:30 PM US/Central.
fzus63 kmkx 151322
glflm
expires:202608152130;;233268
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
822 am cdt sat aug 15 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...
30.2 inch high pressure is centered along the ontario-quebec
border this morning, resulting in generally light easterly winds
across the open waters. the high will progress into the
northeastern united states tonight as a cold front approaches from
the northern great plains, resulting in a brief period of south-
southeasterly winds this afternoon and tonight. the
aforementioned surface front will move across lake michigan early
sunday morning, with northwest winds becoming established by
sunday afternoon across the entirety of the lake. periods of
scattered showers and thunderstorms continue today into sunday
morning ahead of the front. severe weather is not anticipated.
a new area of 30.1 inch high pressure will build in from the
northern great plains late sunday night into monday, bringing
light and variable winds to the waters through the majority of
monday and monday evening. a slow-moving cold front will approach
from the northern great plains tuesday into wednesday, bringing
increasing southwest winds and chances for thunderstorms. precise
timing details will continue to be refined over coming forecasts,
though it does appear that a few stronger storms could be possible
over the southern half of the waters tuesday afternoon & night.
winds will trend light and variable behind the front from
wednesday night through the end of next week.
lmz080-669-671-673-675-777-779-870-872-874-876-878-152130-
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-
822 am cdt sat aug 15 2026
sheboygan wi to pentwater mi south...
.rest of today...southeast winds 10 to 20 kt. scattered showers
with isolated thunderstorms. waves 3 to 5 ft.
.tonight...southeast winds 10 to 15 kt becoming southwest 5 to
10 kt. slight chance of showers and thunderstorms overnight.
waves 2 to 4 ft subsiding to 1 to 2 ft.
.sunday...west winds 10 to 20 kt becoming northwest 10 to 15 kt.
chance of showers in the morning. waves 1 to 2 ft.
.sunday night...north winds 10 to 20 kt. waves 2 to 4 ft.
.monday...north winds 10 to 15 kt becoming northwest 10 to 20 kt.
waves 2 to 4 ft.
.monday night...south winds 10 to 15 kt becoming southwest. waves
1 to 2 ft building to 1 to 3 ft.
.tuesday...southwest winds 10 to 20 kt. waves 2 to 4 ft.
.wednesday...west winds 15 to 25 kt becoming north to 30 kt.
chance of showers and thunderstorms. waves 4 to 6 ft occasionally
to 8 ft.
$$
(6/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/15/2026 10:01 AM America/New_York.
Valid through 8/15/2026 4:00 PM America/New_York.
fzus63 kmqt 151401
glfls
expires:202608152000;;234123
open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat aug 15 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...
30.2 inch high pressure just north and east of lake superior
eventually gives way to a 29.9 inch low by tonight as the
aforementioned high moves east towards new england. this low deepens
to 29.7 inches as it reaches quebec sunday night. into monday, a
30.1 inch high over the plains weakens to 30.0 inches as it slides
generally south of the great lakes tuesday. meanwhile tuesday, a
29.4 inch low over hudson bay extends a 29.8 inch trough over lake
superior. wednesday into thursday morning, ridging of 30.1 inches
moves over the upper great lakes from the plains.
lsz162-152000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt sat aug 15 2026 /901 am cdt sat aug 15 2026/
.rest of today...east winds 5 to 15 knots becoming northeast
10 to 20 knots in the afternoon. a chance of showers and a slight
chance of thunderstorms. waves calm to 2 feet building to 1 to
3 feet.
.tonight...northeast winds 5 to 15 knots backing west late. a
chance of thunderstorms through midnight. a chance of showers.
waves subsiding to calm to 2 feet.
.sunday...west winds 10 to 20 knots diminishing to 5 to 15 knots
late. waves calm to 2 feet.
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet.
.monday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves calm to 2 feet.
.monday night...southwest winds 10 to 20 knots veering west after
midnight. a chance of showers. waves calm to 2 feet.
.tuesday...west winds 5 to 15 knots veering north. a chance of
showers. waves calm to 2 feet.
.wednesday...north winds 5 to 15 knots backing northwest. waves
calm to 2 feet.
$$
(7/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/15/2026 10:01 AM America/New_York.
Valid through 8/15/2026 4:00 PM America/New_York.
fzus63 kmqt 151401
glfls
expires:202608152000;;234124
open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat aug 15 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...
30.2 inch high pressure just north and east of lake superior
eventually gives way to a 29.9 inch low by tonight as the
aforementioned high moves east towards new england. this low deepens
to 29.7 inches as it reaches quebec sunday night. into monday, a
30.1 inch high over the plains weakens to 30.0 inches as it slides
generally south of the great lakes tuesday. meanwhile tuesday, a
29.4 inch low over hudson bay extends a 29.8 inch trough over lake
superior. wednesday into thursday morning, ridging of 30.1 inches
moves over the upper great lakes from the plains.
lsz263-152000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1001 am edt sat aug 15 2026
.rest of today...east winds 5 to 15 knots increasing to 10 to
20 knots late. a chance of showers. waves calm to 2 feet.
.tonight...east winds 10 to 20 knots becoming west 5 to 15 knots
after midnight. a chance of showers and thunderstorms. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.sunday...west winds 10 to 20 knots. waves calm to 2 feet.
.sunday night...west winds 5 to 15 knots. waves calm to 2 feet.
.monday...west winds 5 to 15 knots becoming southwest 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet.
.monday night...southwest winds 10 to 20 knots veering west after
midnight. a chance of showers. waves subsiding to calm to 2 feet.
.tuesday...west winds 5 to 15 knots becoming north 10 to
20 knots. a chance of showers. waves calm to 2 feet.
.wednesday...north winds 10 to 20 knots becoming northwest 5 to
15 knots. waves calm to 2 feet.
$$
(8/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/15/2026 10:01 AM America/New_York.
Valid through 8/15/2026 4:00 PM America/New_York.
fzus63 kmqt 151401
glfls
expires:202608152000;;234125
open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat aug 15 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...
30.2 inch high pressure just north and east of lake superior
eventually gives way to a 29.9 inch low by tonight as the
aforementioned high moves east towards new england. this low deepens
to 29.7 inches as it reaches quebec sunday night. into monday, a
30.1 inch high over the plains weakens to 30.0 inches as it slides
generally south of the great lakes tuesday. meanwhile tuesday, a
29.4 inch low over hudson bay extends a 29.8 inch trough over lake
superior. wednesday into thursday morning, ridging of 30.1 inches
moves over the upper great lakes from the plains.
lsz264-152000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt sat aug 15 2026
.rest of today...southeast winds 5 to 15 knots backing east late.
a chance of showers. waves calm to 2 feet.
.tonight...east winds 10 to 20 knots veering southeast after
midnight, then becoming northwest 5 to 15 knots late. showers
likely through midnight. a slight chance of thunderstorms. a
chance of showers after midnight. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet.
.sunday...northwest winds 10 to 20 knots backing west late. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.sunday night...west winds 5 to 15 knots. waves calm to 2 feet.
.monday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet.
.monday night...southwest winds 10 to 20 knots. a chance of
showers. waves subsiding to calm to 2 feet.
.tuesday...west winds 5 to 15 knots veering north. waves calm to
2 feet.
.wednesday...north winds 10 to 20 knots becoming northwest 5 to
15 knots. waves calm to 2 feet.
$$
(9/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/15/2026 10:01 AM America/New_York.
Valid through 8/15/2026 4:00 PM America/New_York.
fzus63 kmqt 151401
glfls
expires:202608152000;;234126
open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat aug 15 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...
30.2 inch high pressure just north and east of lake superior
eventually gives way to a 29.9 inch low by tonight as the
aforementioned high moves east towards new england. this low deepens
to 29.7 inches as it reaches quebec sunday night. into monday, a
30.1 inch high over the plains weakens to 30.0 inches as it slides
generally south of the great lakes tuesday. meanwhile tuesday, a
29.4 inch low over hudson bay extends a 29.8 inch trough over lake
superior. wednesday into thursday morning, ridging of 30.1 inches
moves over the upper great lakes from the plains.
lsz265-152000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt sat aug 15 2026
.rest of today...southeast winds 10 to 20 knots backing east in
the afternoon, then increasing to 15 to 25 knots late. a slight
chance of showers by mid afternoon. waves calm to 2 feet.
.tonight...southeast winds 15 to 25 knots becoming south 10 to
20 knots after midnight, then veering west late. showers likely
and a slight chance of thunderstorms. waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.sunday...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.sunday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet.
.monday...west winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. waves calm to 2 feet.
.monday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. waves calm to 2 feet.
.tuesday...west winds 10 to 20 knots veering north. a chance of
showers. waves calm to 2 feet.
.wednesday...north winds 15 to 25 knots becoming northwest 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet.
$$
(10/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/15/2026 10:01 AM America/New_York.
Valid through 8/15/2026 4:00 PM America/New_York.
fzus63 kmqt 151401
glfls
expires:202608152000;;234127
open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat aug 15 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...
30.2 inch high pressure just north and east of lake superior
eventually gives way to a 29.9 inch low by tonight as the
aforementioned high moves east towards new england. this low deepens
to 29.7 inches as it reaches quebec sunday night. into monday, a
30.1 inch high over the plains weakens to 30.0 inches as it slides
generally south of the great lakes tuesday. meanwhile tuesday, a
29.4 inch low over hudson bay extends a 29.8 inch trough over lake
superior. wednesday into thursday morning, ridging of 30.1 inches
moves over the upper great lakes from the plains.
lsz266-152000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1001 am edt sat aug 15 2026
.rest of today...southeast winds 5 to 15 knots backing east in
the afternoon, then increasing to 10 to 20 knots late. a slight
chance of showers by mid afternoon. waves calm to 2 feet.
.tonight...east winds 10 to 20 knots becoming southeast 15 to
25 knots after midnight, then becoming south 10 to 20 knots late.
a chance of showers through midnight. a slight chance of
thunderstorms. showers likely after midnight. waves building to
1 to 3 feet, then subsiding to calm to 2 feet.
.sunday...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a slight chance of showers through
early afternoon. waves building to 3 to 6 feet occasionally to
8 feet.
.sunday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet.
.monday night...south winds 5 to 15 knots becoming southwest
15 to 25 knots after midnight. waves calm to 2 feet.
.tuesday...west winds 10 to 20 knots veering north. a chance of
showers. waves calm to 2 feet.
.wednesday...north winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet.
$$
(11/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/15/2026 10:01 AM America/New_York.
Valid through 8/15/2026 4:00 PM America/New_York.
fzus63 kmqt 151401
glfls
expires:202608152000;;234128
open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat aug 15 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...
30.2 inch high pressure just north and east of lake superior
eventually gives way to a 29.9 inch low by tonight as the
aforementioned high moves east towards new england. this low deepens
to 29.7 inches as it reaches quebec sunday night. into monday, a
30.1 inch high over the plains weakens to 30.0 inches as it slides
generally south of the great lakes tuesday. meanwhile tuesday, a
29.4 inch low over hudson bay extends a 29.8 inch trough over lake
superior. wednesday into thursday morning, ridging of 30.1 inches
moves over the upper great lakes from the plains.
lsz267-152000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt sat aug 15 2026
.rest of today...southeast winds 5 to 15 knots backing east in
the afternoon. waves calm to 2 feet.
.tonight...east winds 10 to 20 knots veering south late. a chance
of showers through midnight, then showers and a chance of
thunderstorms after midnight. waves calm to 2 feet.
.sunday...west winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon, then increasing to 20 to 30 knots
late. a chance of showers and a slight chance of thunderstorms
through early afternoon. waves building to 3 to 5 feet
occasionally to 7 feet.
.sunday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.monday...west winds 5 to 15 knots. waves calm to 2 feet.
.monday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet.
.tuesday...west winds 5 to 15 knots veering north. a chance of
showers. waves calm to 2 feet.
.wednesday...north winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet.
$$
|