(1/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 5/3/2026 3:50 PM America/New_York.
Valid through 5/4/2026 12:00 AM America/New_York.
fzus63 kdtx 031950
glflh
expires:202605040400;;962579
open lake forecast for lake huron
national weather service detroit/pontiac mi
350 pm edt sun may 3 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...southwest winds increase today, with gusts of 20 to 30
knots this afternoon and persist through tomorrow before a cold
front veers wind direction northwest by tuesday.
lhz361-040400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
350 pm edt sun may 3 2026
.tonight...south winds 10 to 15 knots becoming southwest 5 to
10 knots in the late evening and overnight. a chance of showers
in the evening. waves 1 to 3 feet.
.monday...south winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. a chance of showers in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet in the late
morning and afternoon.
.monday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots in the late evening and overnight. a chance of
showers in the evening. waves 3 to 5 feet subsiding to 1 to
3 feet after midnight.
.tuesday...west winds 10 to 15 knots. waves 1 to 3 feet.
.tuesday night...west winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet after midnight.
.wednesday...west winds 5 to 10 knots increasing to 10 to
15 knots late in the morning...then becoming northwest 5 to
10 knots late in the evening. waves 1 to 3 feet.
.thursday...west winds 5 to 10 knots increasing to 10 to 15 knots
early in the evening...then decreasing to 5 to 10 knots by
midnight. waves 1 to 3 feet building to 3 to 5 feet .
.friday...west winds 5 to 10 knots increasing to 10 to 15 knots
early in the evening...then becoming northwest 5 to 10 knots by
midnight. waves 3 to 5 feet subsiding to 2 to 4 feet.
$$
(2/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 5/3/2026 3:50 PM America/New_York.
Valid through 5/4/2026 12:00 AM America/New_York.
fzus63 kdtx 031950
glflh
expires:202605040400;;962580
open lake forecast for lake huron
national weather service detroit/pontiac mi
350 pm edt sun may 3 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...southwest winds increase today, with gusts of 20 to 30
knots this afternoon and persist through tomorrow before a cold
front veers wind direction northwest by tuesday.
lhz362-363-040400-
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-
350 pm edt sun may 3 2026
.tonight...southwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 3 to 5 feet.
.monday...southwest winds 10 to 15 knots becoming south 15 to
20 knots in the afternoon. waves 1 to 3 feet building to 5 to
7 feet. waves occasionally around 10 feet.
.monday night...south winds 15 to 20 knots becoming west 10 to
15 knots in the late evening and overnight. a chance of showers
in the evening. waves 4 to 6 feet. waves occasionally around
8 feet.
.tuesday...northwest winds 5 to 10 knots backing to the west in
the late morning and early afternoon...then veering to the west
5 to 10 knots early in the afternoon. waves 2 to 4 feet.
.tuesday night...north winds 5 to 10 knots. waves 2 to 4 feet.
.wednesday...north winds 5 to 10 knots backing to the west late
in the morning...then veering to the west 5 to 10 knots late in
the afternoon veering to the northeast late in the evening. waves
1 to 3 feet.
.thursday...west winds 5 to 10 knots early in the morning
becoming light and variable...then becoming west 5 to 10 knots by
midnight. waves 1 to 3 feet building to 3 to 5 feet .
.friday...west winds 5 to 10 knots veering to the northeast .
waves 3 to 5 feet subsiding to 2 to 4 feet .
$$
(3/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 5/3/2026 3:50 PM America/New_York.
Valid through 5/4/2026 12:00 AM America/New_York.
fzus63 kdtx 031950
glflh
expires:202605040400;;962581
open lake forecast for lake huron
national weather service detroit/pontiac mi
350 pm edt sun may 3 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...southwest winds increase today, with gusts of 20 to 30
knots this afternoon and persist through tomorrow before a cold
front veers wind direction northwest by tuesday.
lhz462>464-040400-
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-
350 pm edt sun may 3 2026
.tonight...southwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. waves 3 to 5 feet.
.monday...south winds 10 to 15 knots increasing to 15 to 20 knots
late in the afternoon. waves 1 to 3 feet building to 3 to 5 feet
in the afternoon.
.monday night...south winds 15 to 20 knots becoming southwest
10 to 15 knots by midnight...then veering to the west after
midnight. a chance of showers in the evening. waves 3 to 5 feet.
.tuesday...north winds 5 to 10 knots backing to the west in the
late morning and early afternoon...then veering to the west 5 to
10 knots early in the afternoon. a chance of showers. waves 1 to
3 feet.
.tuesday night...north winds 5 to 10 knots. a chance of showers.
waves 1 to 3 feet.
.wednesday...north winds 5 to 10 knots becoming light and
variable. waves 2 feet or less.
.thursday...light and variable winds becoming southwest 5 to
10 knots by midnight. waves 2 feet or less.
.friday...west winds 5 to 10 knots veering to the northeast early
in the evening...then becoming light and variable by midnight.
waves 1 to 3 feet.
$$
(4/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 5/3/2026 2:42 PM US/Central.
Valid through 5/3/2026 10:15 PM US/Central.
fzus63 kmkx 031942
glflm
expires:202605040315;;962385
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt sun may 3 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 weak cold front is expected to pass over the lake this
evening, easing winds for a time before winds return to a
southerly direction and become gusty again around dawn on
monday. winds will then increase monday morning ahead of another
cold front in association with low pressure of 28.9 inches moving
across ontario. a short 6 hour period of gales is anticipated
over the northern third of lake michigan between 10am and 4pm cdt.
a gale warning has been issued. winds then ease through the
afternoon from north to south over the lake as the cold front
moves south. winds behind the front will become northwesterly.
the pressure gradient will then ease over the lake tuesday
through thursday, with light and persistent west to northwest
winds occuring. light and variable winds may briefly occur at times
as various weak surface ridges move across the lake.
lmz080-366-565-567-669-671-673-675-777-779-868-870-872-874-876-
878-040315-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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 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 pentwater to manistee mi 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-
242 pm cdt sun may 3 2026
sturgeon bay wi to point betsie mi south...
.tonight...south winds to 30 kt becoming southwest 10 to 20 kt
from late evening on. waves 5 to 8 ft occasionally to 10 ft
subsiding to 2 to 4 ft.
.monday...southwest winds 15 to 25 kt becoming south to 30 kt.
chance of rain showers in the afternoon. waves 2 to 4 ft building
to 5 to 8 ft occasionally to 10 ft.
.monday night...southwest winds 15 to 25 kt becoming west 10 to
20 kt late in the evening, then becoming northwest 10 to 15 kt
overnight. chance of rain showers. waves 4 to 7 ft occasionally
to 9 ft subsiding to 2 to 4 ft.
.tuesday...north winds 10 to 15 kt becoming northeast. chance of
rain showers. waves 1 to 3 ft.
.tuesday night...northwest winds 10 to 15 kt becoming north 5 to
10 kt. waves 1 to 2 ft.
.wednesday...north winds 10 to 15 kt becoming northeast. waves
1 to 3 ft.
.wednesday night...south winds 5 to 10 kt becoming west. waves
1 to 2 ft.
.thursday...west winds 10 to 15 kt becoming southwest. waves 1 ft
or less.
.friday...west winds 5 to 10 kt becoming south 10 to 15 kt. waves
1 to 2 ft.
$$
(5/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 5/3/2026 2:42 PM US/Central.
Valid through 5/3/2026 10:15 PM US/Central.
fzus63 kmkx 031942
glflm
expires:202605040315;;962384
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt sun may 3 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 weak cold front is expected to pass over the lake this
evening, easing winds for a time before winds return to a
southerly direction and become gusty again around dawn on
monday. winds will then increase monday morning ahead of another
cold front in association with low pressure of 28.9 inches moving
across ontario. a short 6 hour period of gales is anticipated
over the northern third of lake michigan between 10am and 4pm cdt.
a gale warning has been issued. winds then ease through the
afternoon from north to south over the lake as the cold front
moves south. winds behind the front will become northwesterly.
the pressure gradient will then ease over the lake tuesday
through thursday, with light and persistent west to northwest
winds occuring. light and variable winds may briefly occur at times
as various weak surface ridges move across the lake.
lmz261-362-364-563-040315-
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 rock island passage to sturgeon bay wi-
242 pm cdt sun may 3 2026
sturgeon bay wi to point betsie mi north...
...gale warning in effect from monday morning through monday
afternoon...
.tonight...southwest winds to 30 kt becoming south 10 to 20 kt.
chance of rain showers and slight chance of thunderstorms. waves
3 to 5 ft building to 6 to 9 ft occasionally to 12 ft, then
subsiding to 3 to 5 ft.
.monday...south winds to 30 kt becoming southwest to 35 kt.
slight chance of rain showers and thunderstorms in the afternoon.
waves 3 to 5 ft building to 6 to 9 ft occasionally to 12 ft.
.monday night...west winds 10 to 20 kt becoming northwest 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft.
.tuesday...northwest winds 10 to 20 kt becoming southwest. waves
1 to 3 ft.
.tuesday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft.
.wednesday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft.
.wednesday night...west winds 10 to 15 kt becoming southwest less
than 10 kt. waves 1 to 2 ft.
.thursday...southwest winds 10 to 15 kt. waves 1 to 2 ft.
.friday...west winds 10 to 15 kt becoming southwest 10 to 20 kt.
waves 1 to 2 ft.
$$
(6/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 5/3/2026 3:57 PM America/New_York.
Valid through 5/4/2026 4:00 AM America/New_York.
fzus63 kmqt 031957
glfls
expires:202605040800;;962671
open lake forecast for lake superior
national weather service marquette mi
357 pm edt sun may 3 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 trough moves over lake superior today before lifting
into northern ontario. a deepening 29.3 inch low digs over the
canadian prairies tonight and then deepens to 29.1 inches over
northern ontario on monday. the low lifts into james bay by monday
evening as 30.1 inch ridging builds just to the east of the canadian
rockies. as the high pressure ridging shifts to the canadian
prairies tuesday and wednesday, the now-29.2 inch low continues
lifting into far northern quebec. thursday into friday, the weather
pattern becomes nebulous as major pressure systems remain far away
from the upper great lakes.
lsz266-040800-
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-
357 pm edt sun may 3 2026
.late this afternoon...west winds 10 to 20 knots. waves calm to
2 feet.
.tonight...west winds 5 to 15 knots becoming south 10 to 20 knots
after midnight, then increasing to 15 to 25 knots late. a slight
chance of rain showers after midnight. waves building to 3 to
6 feet occasionally to 8 feet.
.monday...southwest winds 20 to 30 knots veering west in the
afternoon. a chance of rain showers. waves building to 6 to
9 feet occasionally to 11 feet.
.monday night...west winds 20 to 30 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet.
.tuesday...west winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves subsiding to 2 to 4 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 10 to 20 knots. waves calm to 2 feet.
.wednesday night...west winds 5 to 15 knots. waves calm to
2 feet.
.thursday...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...west winds 5 to 15 knots. waves calm to 2 feet.
$$
(7/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 5/3/2026 3:57 PM America/New_York.
Valid through 5/4/2026 4:00 AM America/New_York.
fzus63 kmqt 031957
glfls
expires:202605040800;;962672
open lake forecast for lake superior
national weather service marquette mi
357 pm edt sun may 3 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 trough moves over lake superior today before lifting
into northern ontario. a deepening 29.3 inch low digs over the
canadian prairies tonight and then deepens to 29.1 inches over
northern ontario on monday. the low lifts into james bay by monday
evening as 30.1 inch ridging builds just to the east of the canadian
rockies. as the high pressure ridging shifts to the canadian
prairies tuesday and wednesday, the now-29.2 inch low continues
lifting into far northern quebec. thursday into friday, the weather
pattern becomes nebulous as major pressure systems remain far away
from the upper great lakes.
lsz267-040800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
357 pm edt sun may 3 2026
.late this afternoon...west winds 10 to 20 knots. a slight chance
of rain showers. waves calm to 2 feet.
.tonight...west winds 5 to 15 knots backing south after midnight,
then increasing to 15 to 25 knots late. waves building to 3 to
5 feet occasionally to 7 feet.
.monday...south winds 20 to 30 knots becoming southwest 15 to
25 knots in the afternoon, then veering west late. a chance of
rain showers. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 3 to 5 feet occasionally to 7 feet.
.monday night...west winds 20 to 30 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet.
.tuesday...west winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves subsiding to 2 to 4 feet.
.tuesday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet.
.wednesday...west winds 10 to 20 knots. waves calm to 2 feet.
.wednesday night...west winds 5 to 15 knots. waves calm to
2 feet.
.thursday...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...west winds 5 to 15 knots. waves calm to 2 feet.
$$
(8/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 5/3/2026 3:57 PM America/New_York.
Valid through 5/4/2026 4:00 AM America/New_York.
fzus63 kmqt 031957
glfls
expires:202605040800;;962667
open lake forecast for lake superior
national weather service marquette mi
357 pm edt sun may 3 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 trough moves over lake superior today before lifting
into northern ontario. a deepening 29.3 inch low digs over the
canadian prairies tonight and then deepens to 29.1 inches over
northern ontario on monday. the low lifts into james bay by monday
evening as 30.1 inch ridging builds just to the east of the canadian
rockies. as the high pressure ridging shifts to the canadian
prairies tuesday and wednesday, the now-29.2 inch low continues
lifting into far northern quebec. thursday into friday, the weather
pattern becomes nebulous as major pressure systems remain far away
from the upper great lakes.
lsz162-040800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
357 pm edt sun may 3 2026 /257 pm cdt sun may 3 2026/
.late this afternoon...southwest winds 10 to 20 knots. waves calm
to 2 feet.
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of rain showers after midnight.
waves building to 3 to 6 feet occasionally to 8 feet.
.monday...west winds 15 to 25 knots increasing to 20 to 30 knots
in the afternoon, then diminishing to 15 to 25 knots late. a
chance of rain showers through early afternoon. waves subsiding
to 3 to 5 feet occasionally to 7 feet.
.monday night...west winds 15 to 25 knots. waves subsiding to
calm to 2 feet.
.tuesday...west winds 10 to 20 knots. waves calm to 2 feet.
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet.
.wednesday...west winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet.
.wednesday night...west winds 5 to 15 knots. waves calm to
2 feet.
.thursday...southwest winds 5 to 15 knots veering northwest.
waves calm to 2 feet.
.friday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet.
$$
(9/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 5/3/2026 3:57 PM America/New_York.
Valid through 5/4/2026 4:00 AM America/New_York.
fzus63 kmqt 031957
glfls
expires:202605040800;;962668
open lake forecast for lake superior
national weather service marquette mi
357 pm edt sun may 3 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 trough moves over lake superior today before lifting
into northern ontario. a deepening 29.3 inch low digs over the
canadian prairies tonight and then deepens to 29.1 inches over
northern ontario on monday. the low lifts into james bay by monday
evening as 30.1 inch ridging builds just to the east of the canadian
rockies. as the high pressure ridging shifts to the canadian
prairies tuesday and wednesday, the now-29.2 inch low continues
lifting into far northern quebec. thursday into friday, the weather
pattern becomes nebulous as major pressure systems remain far away
from the upper great lakes.
lsz263-040800-
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-
357 pm edt sun may 3 2026
.late this afternoon...west winds 5 to 15 knots. waves 1 to
3 feet.
.tonight...southwest winds 5 to 15 knots increasing to 20 to
30 knots. a slight chance of rain showers after midnight. waves
building to 4 to 7 feet occasionally to 9 feet.
.monday...southwest winds 20 to 30 knots veering west in the
afternoon, then diminishing to 15 to 25 knots late. a chance of
rain showers through early afternoon. waves building to 5 to
8 feet occasionally to 10 feet.
.monday night...west winds 15 to 25 knots diminishing to 10 to
20 knots late. waves subsiding to 2 to 4 feet.
.tuesday...west winds 10 to 20 knots. waves subsiding to 1 to
3 feet.
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet.
.wednesday night...west winds 5 to 15 knots. waves calm to
2 feet.
.thursday...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet.
$$
(10/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 5/3/2026 3:57 PM America/New_York.
Valid through 5/4/2026 4:00 AM America/New_York.
fzus63 kmqt 031957
glfls
expires:202605040800;;962669
open lake forecast for lake superior
national weather service marquette mi
357 pm edt sun may 3 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 trough moves over lake superior today before lifting
into northern ontario. a deepening 29.3 inch low digs over the
canadian prairies tonight and then deepens to 29.1 inches over
northern ontario on monday. the low lifts into james bay by monday
evening as 30.1 inch ridging builds just to the east of the canadian
rockies. as the high pressure ridging shifts to the canadian
prairies tuesday and wednesday, the now-29.2 inch low continues
lifting into far northern quebec. thursday into friday, the weather
pattern becomes nebulous as major pressure systems remain far away
from the upper great lakes.
lsz264-040800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
357 pm edt sun may 3 2026
.late this afternoon...west winds 5 to 15 knots. waves 1 to
3 feet.
.tonight...southwest winds 5 to 15 knots becoming south 10 to
20 knots after midnight, then becoming southwest 20 to 30 knots
late. a slight chance of rain showers after midnight. waves
building to 3 to 6 feet occasionally to 8 feet.
.monday...southwest winds 20 to 30 knots veering west in the
afternoon. a chance of rain showers through early afternoon.
waves building to 6 to 9 feet occasionally to 11 feet.
.monday night...west winds 20 to 30 knots diminishing to 15 to
25 knots late. waves subsiding to 2 to 4 feet.
.tuesday...west winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet.
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...west winds 5 to 15 knots. waves calm to
2 feet.
.thursday...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...west winds 5 to 15 knots. waves calm to 2 feet.
$$
(11/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 5/3/2026 3:57 PM America/New_York.
Valid through 5/4/2026 4:00 AM America/New_York.
fzus63 kmqt 031957
glfls
expires:202605040800;;962670
open lake forecast for lake superior
national weather service marquette mi
357 pm edt sun may 3 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 trough moves over lake superior today before lifting
into northern ontario. a deepening 29.3 inch low digs over the
canadian prairies tonight and then deepens to 29.1 inches over
northern ontario on monday. the low lifts into james bay by monday
evening as 30.1 inch ridging builds just to the east of the canadian
rockies. as the high pressure ridging shifts to the canadian
prairies tuesday and wednesday, the now-29.2 inch low continues
lifting into far northern quebec. thursday into friday, the weather
pattern becomes nebulous as major pressure systems remain far away
from the upper great lakes.
lsz265-040800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
357 pm edt sun may 3 2026
.late this afternoon...west winds 10 to 20 knots. waves calm to
2 feet.
.tonight...west winds 10 to 20 knots backing south after
midnight, then becoming southwest 15 to 25 knots late. waves
building to 2 to 4 feet.
.monday...southwest winds 15 to 25 knots becoming west 20 to
30 knots in the afternoon. a chance of rain showers through early
afternoon. waves building to 3 to 6 feet occasionally to 8 feet.
.monday night...west winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible after midnight,
then diminishing to 20 to 30 knots late. waves subsiding to 2 to
4 feet.
.tuesday...west winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves subsiding to calm to 2 feet.
.tuesday night...west winds 10 to 20 knots. waves calm to 2 feet.
.wednesday...west winds 10 to 20 knots. waves calm to 2 feet.
.wednesday night...west winds 10 to 20 knots. waves calm to
2 feet.
.thursday...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...west winds 5 to 15 knots. waves calm to 2 feet.
$$
|