(1/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/22/2026 4:07 AM America/New_York.
Valid through 8/22/2026 12:00 PM America/New_York.
fzus63 kdtx 220807 cca
glflh
expires:202608221600;;156036
open lake forecast for lake huron...corrected
national weather service detroit/pontiac mi
407 am edt sat aug 22 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 cold front will move across the great lakes this
morning which will veer wind direction to the northwest. showers
and thunderstorms are expected along and ahead of the front.
post-frontal northwest flow leads to gusty winds through the day
on sunday.
lhz361-221600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
407 am edt sat aug 22 2026
.today...south winds 5 to 10 knots veering to the west late in
the morning...then becoming northwest 10 to 15 knots in the
afternoon. a chance of showers in the morning. a chance of
waterspouts. waves 1 to 3 feet.
.tonight...northwest winds 15 to 20 knots. gusts to 30 knots in
the evening. waves 3 to 5 feet.
.sunday...northwest winds 15 to 20 knots increasing to 20 to
25 knots early in the afternoon. gusts to 30 knots. waves 5 to 7
feet. waves occasionally around 10 feet.
.sunday night...northwest winds 20 to 25 knots with gusts to
30 knots. a chance of showers. waves 5 to 7 feet. waves
occasionally around 10 feet.
.monday...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 5 to 10 knots. waves 3 to 5 feet.
.tuesday...west winds 5 to 10 knots early in the morning becoming
light and variable...then becoming south 5 to 10 knots by
midnight. waves 2 feet or less.
.wednesday...south winds 5 to 10 knots. a chance of showers early
in the morning...then showers likely. waves 1 to 3 feet.
$$
(2/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/22/2026 4:07 AM America/New_York.
Valid through 8/22/2026 12:00 PM America/New_York.
fzus63 kdtx 220807 cca
glflh
expires:202608221600;;156037
open lake forecast for lake huron...corrected
national weather service detroit/pontiac mi
407 am edt sat aug 22 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 cold front will move across the great lakes this
morning which will veer wind direction to the northwest. showers
and thunderstorms are expected along and ahead of the front.
post-frontal northwest flow leads to gusty winds through the day
on sunday.
lhz362-363-221600-
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-
407 am edt sat aug 22 2026
.today...southwest winds 5 to 10 knots. a chance of showers in
the morning...then showers likely and a chance of thunderstorms
in the afternoon. a chance of waterspouts. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon.
.tonight...northwest winds 10 to 15 knots increasing to 20 to
25 knots. waves 4 to 6 feet building to 6 to 9 feet after
midnight. waves occasionally around 12 feet.
.sunday...northwest winds 20 to 25 knots with gusts to 35 knot
gales. a chance of waterspouts in the morning. a chance of
showers in the afternoon. waves 6 to 9 feet. waves occasionally
around 12 feet.
.sunday night...northwest winds 20 to 25 knots with gusts to
30 knots. a chance of waterspouts in the evening. a chance of
showers. waves 6 to 9 feet. waves occasionally around 12 feet.
.monday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. waves 4 to 6 feet. waves
occasionally around 8 feet.
.tuesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming south 5 to 10 knots
by midnight. waves 1 to 3 feet.
.wednesday...south winds 5 to 10 knots increasing to 10 to
15 knots. showers likely. a chance of thunderstorms by midnight.
waves 1 to 3 feet.
$$
(3/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/22/2026 4:07 AM America/New_York.
Valid through 8/22/2026 12:00 PM America/New_York.
fzus63 kdtx 220807 cca
glflh
expires:202608221600;;156038
open lake forecast for lake huron...corrected
national weather service detroit/pontiac mi
407 am edt sat aug 22 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 cold front will move across the great lakes this
morning which will veer wind direction to the northwest. showers
and thunderstorms are expected along and ahead of the front.
post-frontal northwest flow leads to gusty winds through the day
on sunday.
lhz462>464-221600-
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-
407 am edt sat aug 22 2026
.today...south winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and afternoon. a chance of showers in the
morning...then a chance of showers and thunderstorms in the
afternoon. a chance of waterspouts. waves 1 to 3 feet.
.tonight...northwest winds 10 to 15 knots increasing to 15 to
20 knots after midnight. showers and a chance of thunderstorms in
the evening. a chance of waterspouts in the evening. waves 1 to
3 feet building to 6 to 9 feet. waves occasionally around
12 feet.
.sunday...northwest winds 20 to 25 knots with gusts to 35 knot
gales. a chance of showers in the morning...then showers likely
in the afternoon. waves 6 to 9 feet. waves occasionally around
12 feet.
.sunday night...northwest winds 15 to 20 knots increasing to
20 to 25 knots by midnight...then becoming west 15 to 20 knots
after midnight. gusts to 30 knots. showers likely in the
evening...then a chance of showers after midnight. waves 6 to
9 feet. waves occasionally around 12 feet.
.monday...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots late in the afternoon.
waves 4 to 6 feet subsiding to 2 to 4 feet late in the evening.
waves occasionally around 8 feet.
.tuesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming south 5 to 10 knots
by midnight. waves 2 feet or less.
.wednesday...southwest winds 5 to 10 knots becoming south 10 to
15 knots . a chance of showers early in the evening. rain showers
likely by midnight. waves 1 to 3 feet.
$$
(4/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 8/22/2026 3:03 AM US/Central.
Valid through 8/22/2026 10:30 AM US/Central.
fzus63 kmkx 220803
glflm
expires:202608221530;;155629
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
303 am cdt sat aug 22 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...
steady northwest winds are expected today as a low pressure trough
of 29.8 inches over lower michigan continues to exit. then look
for gusty northerly winds to develop along a cold front that will
track from north to south down lake michigan this evening. a few
thunderstorms are possible along this front. another cold front
will reinforce the northerly winds over lake michigan on sunday
as low pressure around 29.6 inches tracks from lower michigan to
ontario and high pressure of 30.2 inches pushes in from the upper
midwest. variable winds are expected for monday and tuesday as
the high crosses the upper great lakes.
lmz261-362-364-366-563-565-567-868-221530-
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-
303 am cdt sat aug 22 2026
sheboygan wi to pentwater mi north...
.today...north winds 10 to 20 kt becoming northwest 15 to 25 kt.
slight chance of showers and thunderstorms this afternoon. waves
2 to 4 ft.
.tonight...north winds to 30 kt diminishing to 15 to 25 kt.
slight chance of showers and thunderstorms in the evening. waves
4 to 6 ft occasionally to 8 ft.
.sunday...northwest winds 15 to 25 kt becoming north to 30 kt.
waves 4 to 7 ft occasionally to 9 ft.
.sunday night...north winds to 30 kt becoming northwest 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.monday...northwest winds 15 to 25 kt becoming north. waves 2 to
4 ft.
.monday night...west winds 10 to 20 kt becoming southwest 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft.
.tuesday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 2 ft building to 2 to 4 ft.
.wednesday...southwest 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 8/22/2026 3:03 AM US/Central.
Valid through 8/22/2026 10:30 AM US/Central.
fzus63 kmkx 220803
glflm
expires:202608221530;;155630
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
303 am cdt sat aug 22 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...
steady northwest winds are expected today as a low pressure trough
of 29.8 inches over lower michigan continues to exit. then look
for gusty northerly winds to develop along a cold front that will
track from north to south down lake michigan this evening. a few
thunderstorms are possible along this front. another cold front
will reinforce the northerly winds over lake michigan on sunday
as low pressure around 29.6 inches tracks from lower michigan to
ontario and high pressure of 30.2 inches pushes in from the upper
midwest. variable winds are expected for monday and tuesday as
the high crosses the upper great lakes.
lmz080-669-671-673-675-777-779-870-872-874-876-878-221530-
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-
303 am cdt sat aug 22 2026
sheboygan wi to pentwater mi south...
.today...northwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft.
.tonight...north winds 15 to 25 kt diminishing to 10 to 20 kt.
slight chance of showers and thunderstorms in the evening. waves
4 to 6 ft occasionally to 8 ft.
.sunday...northwest winds 15 to 25 kt becoming north to 30 kt.
waves 4 to 7 ft occasionally to 9 ft.
.sunday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.monday...northwest winds 10 to 20 kt becoming north. waves 2 to
4 ft.
.monday night...east winds 10 to 15 kt veering to south. waves
1 to 3 ft.
.tuesday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 2 ft building to 1 to 3 ft.
.wednesday...southwest winds 15 to 25 kt increasing to 30 kt.
chance of showers. waves 3 to 5 ft.
$$
(6/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/22/2026 4:01 AM America/New_York.
Valid through 8/22/2026 4:00 PM America/New_York.
fzus63 kmqt 220801
glfls
expires:202608222000;;155529
open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 22 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 29.9 inch trough will linger over lake superior this morning. this
is followed by 30.1 inch ridging for the latter part of the weekend
into early next week via a 30.2 inch parent high from the canadian
prairies that drops down into the ohio river valley by late monday,
weakening to 30.1 inches as it does so. a 29.7 inch low over the
canadian prairies monday night then drops southeast towards lake
superior, arriving early wednesday morning. the low shifts east
wendesday night with weak ridging of 29.9 inches building over the
lake on thursday.
lsz162-222000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat aug 22 2026 /301 am cdt sat aug 22 2026/
.early this morning...northwest winds 10 to 20 knots. waves calm
to 2 feet.
.today...northwest winds 10 to 20 knots. waves calm to 2 feet.
.tonight...north winds 10 to 20 knots. waves calm to 2 feet.
.sunday...north winds 5 to 15 knots veering south in the
afternoon. waves calm to 2 feet.
.sunday night...west winds 5 to 15 knots becoming northwest less
than 10 knots after midnight. waves calm to 2 feet.
.monday...north winds less than 10 knots becoming southeast 5 to
15 knots by mid afternoon. waves calm to 2 feet.
.monday night...east winds 5 to 15 knots becoming southeast less
than 10 knots after midnight. waves calm to 2 feet.
.tuesday...south winds 5 to 15 knots veering west. a chance of
showers and thunderstorms. waves calm to 2 feet.
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet.
$$
(7/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/22/2026 4:01 AM America/New_York.
Valid through 8/22/2026 4:00 PM America/New_York.
fzus63 kmqt 220801
glfls
expires:202608222000;;155530
open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 22 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 29.9 inch trough will linger over lake superior this morning. this
is followed by 30.1 inch ridging for the latter part of the weekend
into early next week via a 30.2 inch parent high from the canadian
prairies that drops down into the ohio river valley by late monday,
weakening to 30.1 inches as it does so. a 29.7 inch low over the
canadian prairies monday night then drops southeast towards lake
superior, arriving early wednesday morning. the low shifts east
wendesday night with weak ridging of 29.9 inches building over the
lake on thursday.
lsz263-222000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 am edt sat aug 22 2026
.early this morning...northwest winds 10 to 20 knots. a slight
chance of showers. waves calm to 2 feet.
.today...northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves calm to 2 feet.
.tonight...north winds 10 to 20 knots. waves building to 2 to
4 feet.
.sunday...north winds 10 to 20 knots becoming west 5 to 15 knots
late. waves subsiding to calm to 2 feet.
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet.
.monday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet.
.monday night...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet.
.tuesday...south winds 5 to 15 knots veering southwest. a chance
of showers. a chance of thunderstorms. showers likely. waves calm
to 2 feet.
.wednesday...west winds 10 to 20 knots becoming northwest 5 to
15 knots. a chance of showers. waves calm to 2 feet.
$$
(8/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/22/2026 4:01 AM America/New_York.
Valid through 8/22/2026 4:00 PM America/New_York.
fzus63 kmqt 220801
glfls
expires:202608222000;;155531
open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 22 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 29.9 inch trough will linger over lake superior this morning. this
is followed by 30.1 inch ridging for the latter part of the weekend
into early next week via a 30.2 inch parent high from the canadian
prairies that drops down into the ohio river valley by late monday,
weakening to 30.1 inches as it does so. a 29.7 inch low over the
canadian prairies monday night then drops southeast towards lake
superior, arriving early wednesday morning. the low shifts east
wendesday night with weak ridging of 29.9 inches building over the
lake on thursday.
lsz264-222000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sat aug 22 2026
.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet.
.today...northwest winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.tonight...north winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then diminishing to 10 to 20 knots late.
waves building to 2 to 4 feet.
.sunday...north winds 10 to 20 knots backing northwest late.
waves subsiding to calm to 2 feet.
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet.
.monday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet.
.monday night...west winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet.
.tuesday...southeast winds 5 to 15 knots veering south. a chance
of thunderstorms. showers likely. waves calm to 2 feet.
.wednesday...west winds 5 to 15 knots veering northwest. a chance
of showers. waves calm to 2 feet.
$$
(9/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/22/2026 4:01 AM America/New_York.
Valid through 8/22/2026 4:00 PM America/New_York.
fzus63 kmqt 220801
glfls
expires:202608222000;;155532
open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 22 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 29.9 inch trough will linger over lake superior this morning. this
is followed by 30.1 inch ridging for the latter part of the weekend
into early next week via a 30.2 inch parent high from the canadian
prairies that drops down into the ohio river valley by late monday,
weakening to 30.1 inches as it does so. a 29.7 inch low over the
canadian prairies monday night then drops southeast towards lake
superior, arriving early wednesday morning. the low shifts east
wendesday night with weak ridging of 29.9 inches building over the
lake on thursday.
lsz265-222000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sat aug 22 2026
.early this morning...west winds 15 to 25 knots. waves calm to
2 feet.
.today...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.
.tonight...northwest winds 20 to 30 knots veering north after
midnight. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet.
.sunday...north winds 20 to 30 knots backing northwest late.
waves building to 5 to 8 feet occasionally to 10 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet.
.sunday night...northwest winds 15 to 25 knots. waves subsiding
to 1 to 3 feet.
.monday...northwest winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet.
.monday night...west winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet.
.tuesday...southeast winds 5 to 15 knots becoming south 15 to
25 knots. showers likely and a chance of thunderstorms. waves
calm to 2 feet.
.wednesday...west winds 15 to 25 knots veering northwest. a
chance of showers. waves calm to 2 feet.
$$
(10/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/22/2026 4:01 AM America/New_York.
Valid through 8/22/2026 4:00 PM America/New_York.
fzus63 kmqt 220801
glfls
expires:202608222000;;155533
open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 22 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 29.9 inch trough will linger over lake superior this morning. this
is followed by 30.1 inch ridging for the latter part of the weekend
into early next week via a 30.2 inch parent high from the canadian
prairies that drops down into the ohio river valley by late monday,
weakening to 30.1 inches as it does so. a 29.7 inch low over the
canadian prairies monday night then drops southeast towards lake
superior, arriving early wednesday morning. the low shifts east
wendesday night with weak ridging of 29.9 inches building over the
lake on thursday.
lsz266-222000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt sat aug 22 2026
.early this morning...northwest winds 10 to 20 knots. patchy
dense fog. waves calm to 2 feet.
.today...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. patchy dense fog through early
afternoon. waves building to 3 to 6 feet occasionally to 8 feet.
.tonight...northwest winds 20 to 30 knots veering north after
midnight. waves 3 to 6 feet occasionally to 8 feet.
.sunday...north winds 20 to 30 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible in the afternoon,
then backing northwest late. waves building to 4 to 8 feet
occasionally to 10 feet.
.sunday night...northwest winds 20 to 30 knots becoming north
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet.
.monday...north winds 10 to 20 knots backing northwest by mid
afternoon. waves subsiding to calm to 2 feet.
.monday night...northwest winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet.
.tuesday...south winds 10 to 20 knots. showers likely and a
chance of thunderstorms. waves building to 1 to 3 feet.
.wednesday...west winds 10 to 20 knots veering northwest. showers
likely. waves subsiding to calm to 2 feet, then building to 1 to
3 feet.
$$
(11/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/22/2026 4:01 AM America/New_York.
Valid through 8/22/2026 4:00 PM America/New_York.
fzus63 kmqt 220801
glfls
expires:202608222000;;155534
open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 22 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 29.9 inch trough will linger over lake superior this morning. this
is followed by 30.1 inch ridging for the latter part of the weekend
into early next week via a 30.2 inch parent high from the canadian
prairies that drops down into the ohio river valley by late monday,
weakening to 30.1 inches as it does so. a 29.7 inch low over the
canadian prairies monday night then drops southeast towards lake
superior, arriving early wednesday morning. the low shifts east
wendesday night with weak ridging of 29.9 inches building over the
lake on thursday.
lsz267-222000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sat aug 22 2026
.early this morning...northwest winds 10 to 20 knots. areas of
dense fog. a slight chance of showers. waves calm to 2 feet.
.today...northwest winds 10 to 20 knots increasing to 20 to
30 knots. areas of fog. a slight chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet.
.tonight...northwest winds 20 to 30 knots veering north after
midnight. a slight chance of showers after midnight. waves
building to 3 to 6 feet occasionally to 8 feet.
.sunday...north winds 20 to 30 knots backing northwest in the
afternoon, then increasing to 30 knots with a few gale force
gusts to 35 knots possible late. a slight chance of showers.
waves building to 5 to 8 feet occasionally to 10 feet.
.sunday night...northwest winds 20 to 30 knots veering north
after midnight. waves subsiding to 3 to 6 feet occasionally to
8 feet.
.monday...northwest winds 15 to 25 knots. waves subsiding to 2 to
4 feet.
.monday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet.
.tuesday...southeast winds 5 to 15 knots veering south. showers
likely. waves building to 1 to 3 feet.
.wednesday...south winds 10 to 20 knots veering west. showers
likely. a chance of thunderstorms. a chance of showers. waves
subsiding to calm to 2 feet.
$$
|