(1/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 10/14/2025 9:40 AM America/New_York.
Valid through 10/14/2025 5:45 PM America/New_York.
fzus63 kdtx 141340
glflh
expires:202510142145;;121792
open lake forecast for lake huron
national weather service detroit/pontiac mi
940 am edt tue oct 14 2025
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 exits the central great lakes this
morning allowing winds to shift northwest. expansive high
pressure, 30.30 inches, will then build into the great lakes
today through wednesday and last through thursday.
lhz361-142145-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
940 am edt tue oct 14 2025
.rest of today...northwest winds 10 to 15 knots. waves 1 to
3 feet building to 2 to 4 feet late in the afternoon.
.tonight...northwest winds 15 to 20 knots. waves 3 to 5 feet
subsiding to 1 to 3 feet early in the morning.
.wednesday...northeast winds 5 to 10 knots early in the morning
becoming light and variable. a chance of showers in the morning.
waves 2 feet or less.
.wednesday night...northwest winds 5 to 10 knots until early
morning becoming light and variable. waves 2 feet or less.
.thursday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon. a chance of showers late in the
afternoon. waves 2 feet or less.
.friday...south winds 10 to 15 knots. showers likely early in the
morning...then a chance of showers early in the evening. rain
showers likely in the late evening and early morning. waves 1 to
3 feet building to 2 to 4 feet.
.saturday...south winds 10 to 15 knots becoming southwest 5 to
10 knots until early morning. showers likely. waves 2 to 4 feet
subsiding to 1 to 3 feet until early morning.
$$
(2/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 10/14/2025 9:40 AM America/New_York.
Valid through 10/14/2025 5:45 PM America/New_York.
fzus63 kdtx 141340
glflh
expires:202510142145;;121793
open lake forecast for lake huron
national weather service detroit/pontiac mi
940 am edt tue oct 14 2025
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a cold front exits the central great lakes this
morning allowing winds to shift northwest. expansive high
pressure, 30.30 inches, will then build into the great lakes
today through wednesday and last through thursday.
lhz362-363-142145-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
940 am edt tue oct 14 2025
.rest of today...northwest winds 15 to 20 knots. waves 3 to
5 feet.
.tonight...north winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. waves 4 to 6 feet. waves
occasionally around 8 feet.
.wednesday...north winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. a chance of showers
in the morning. waves 2 to 4 feet subsiding to 1 to 3 feet early
in the afternoon.
.wednesday night...north winds 5 to 10 knots. waves 2 feet or
less.
.thursday...north winds 5 to 10 knots in the morning becoming
light and variable...then becoming south 5 to 10 knots late in
the evening. a chance of showers late in the evening. waves
2 feet or less.
.friday...south winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers. waves 2 to 4 feet building to 4 to
6 feet. waves occasionally around 8 feet.
.saturday...south winds 15 to 20 knots becoming southwest 10 to
15 knots until early morning. a chance of showers early in the
morning...then showers likely. waves 3 to 5 feet.
$$
(3/11)
Latest Great Lakes Marine Forecast by KDTX
Issued 10/14/2025 9:40 AM America/New_York.
Valid through 10/14/2025 5:45 PM America/New_York.
fzus63 kdtx 141340
glflh
expires:202510142145;;121794
open lake forecast for lake huron
national weather service detroit/pontiac mi
940 am edt tue oct 14 2025
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 exits the central great lakes this
morning allowing winds to shift northwest. expansive high
pressure, 30.30 inches, will then build into the great lakes
today through wednesday and last through thursday.
lhz462>464-142145-
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-
940 am edt tue oct 14 2025
.rest of today...northwest winds 10 to 15 knots becoming north
15 to 20 knots late in the afternoon. waves 3 to 5 feet.
.tonight...north winds 15 to 20 knots. a chance of showers after
midnight. waves 4 to 6 feet.
.wednesday...north winds 10 to 15 knots. a chance of showers in
the morning. waves 3 to 5 feet. waves occasionally around 8 feet.
.wednesday night...north winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight.
.thursday...north winds 5 to 10 knots in the morning becoming
light and variable...then becoming south 5 to 10 knots late in
the evening. a chance of showers late in the evening. waves
2 feet or less.
.friday...south winds 10 to 15 knots increasing to 15 to 20 knots
in the late evening and early morning. a chance of showers. waves
1 to 3 feet building to 3 to 5 feet.
.saturday...south winds 15 to 20 knots becoming southwest 10 to
15 knots until early morning. a chance of showers early in the
morning...then showers likely. waves 3 to 5 feet subsiding to
2 to 4 feet in the late evening and early morning.
$$
(4/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 10/14/2025 9:16 AM US/Central.
Valid through 10/14/2025 4:30 PM US/Central.
fzus63 kmkx 141416
glflm
expires:202510142130;;123497
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 am cdt tue oct 14 2025
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...
no major changes to the going forecast this morning as brreezy
north to northeast winds continue today into tonight as 30.4 inch
high pressure builds into the northern great plains. the high
will cross lake michigan on wednesday, allowing winds to taper
across the waters. winds will become southerly on thursday as 29.5
inch low pressure develops over the northern great plains. the
low will deepen to 29.3 inches near lake winnipeg thursday night
through friday, allowing winds to increase further across lake
michigan. gusts could approach gale force during this time. winds
will remain breezy as they become southwest on saturday. gusty
northwest winds are expected on sunday behind a cold front, with
gale force gusts possible.
lmz080-669-671-673-675-777-779-870-872-874-876-878-142130-
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-
916 am cdt tue oct 14 2025
sheboygan wi to pentwater mi south...
.rest of today...northeast winds 10 to 20 kt becoming north.
waves 4 to 6 ft occasionally to 8 ft.
.tonight...north winds 15 to 25 kt becoming northeast. chance of
showers overnight. waves 4 to 7 ft occasionally to 9 ft.
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers in the morning. waves 4 to 7 ft
occasionally to 9 ft subsiding to 1 to 3 ft.
.wednesday night...northeast winds 10 to 15 kt becoming east.
waves 1 to 3 ft.
.thursday...southeast winds 10 to 20 kt. waves 2 to 4 ft building
to 3 to 5 ft.
.thursday night...southeast winds 10 to 20 kt becoming south
15 to 25 kt. chance of showers. waves 3 to 5 ft building to 4 to
7 ft occasionally to 9 ft.
.friday...south winds to 30 kt. waves 7 to 10 ft occasionally to
13 ft.
.saturday...southwest winds 10 to 20 kt increasing to 15 to
25 kt. showers likely. waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 7 ft occasionally to 9 ft.
$$
(5/11)
Latest Great Lakes Marine Forecast by KMKX
Issued 10/14/2025 9:16 AM US/Central.
Valid through 10/14/2025 4:30 PM US/Central.
fzus63 kmkx 141416
glflm
expires:202510142130;;123496
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 am cdt tue oct 14 2025
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...
no major changes to the going forecast this morning as brreezy
north to northeast winds continue today into tonight as 30.4 inch
high pressure builds into the northern great plains. the high
will cross lake michigan on wednesday, allowing winds to taper
across the waters. winds will become southerly on thursday as 29.5
inch low pressure develops over the northern great plains. the
low will deepen to 29.3 inches near lake winnipeg thursday night
through friday, allowing winds to increase further across lake
michigan. gusts could approach gale force during this time. winds
will remain breezy as they become southwest on saturday. gusty
northwest winds are expected on sunday behind a cold front, with
gale force gusts possible.
lmz261-362-364-366-563-565-567-868-142130-
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-
916 am cdt tue oct 14 2025
sheboygan wi to pentwater mi north...
.rest of today...north winds 10 to 20 kt. waves 3 to 5 ft.
.tonight...north winds 10 to 20 kt becoming northeast. chance of
rain showers. waves 4 to 6 ft occasionally to 8 ft.
.wednesday...northeast winds 10 to 15 kt becoming north. waves
3 to 5 ft subsiding to 1 to 2 ft.
.wednesday night...northeast winds 10 to 15 kt becoming east.
waves 1 to 2 ft.
.thursday...southeast winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 3 ft building to 3 to 5 ft.
.thursday night...south winds 10 to 20 kt increasing to 15 to
25 kt. showers likely. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft.
.friday...south winds to 30 kt. chance of showers. waves 7 to
10 ft occasionally to 13 ft.
.saturday...southwest winds 10 to 20 kt increasing to 15 to
25 kt. chance of showers. waves 4 to 7 ft occasionally to 9 ft
subsiding to 4 to 6 ft occasionally to 8 ft.
$$
(6/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 10/14/2025 10:01 AM America/New_York.
Valid through 10/14/2025 4:00 PM America/New_York.
fzus63 kmqt 141401
glfls
expires:202510142000;;122597
open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 14 2025
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 30.5 inch high over the canadian prairie builds into lake superior
today. this high shifts across the great lakes and northern ontario
by wednesday at around 30.4 inches. ridging weakens to 30.1 inches
over lake superior through thursday as troughing develops over the
plains and the parent high moves east. thursday night through
friday, a deepening 29.4 inch low develops over the northern plains
and lifts near to lake winnipeg. this low is projected to bring 29.5
to 29.6 inch troughing over lake superior saturday as the low
traverses northern ontario. by sunday afternoon, another low
develops over lower michigan, then lifts north into ontario and
quebec into early monday.
lsz264-142000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt tue oct 14 2025
.rest of today...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing northwest late. waves
2 to 4 feet subsiding to calm to 2 feet.
.tonight...northwest winds 5 to 15 knots veering north after
midnight, then diminishing to less than 10 knots late. waves calm
to 2 feet.
.wednesday...north winds less than 10 knots backing southwest in
the afternoon, then veering west late. waves calm to 2 feet.
.wednesday night...southwest winds less than 10 knots becoming
south 5 to 15 knots after midnight. waves calm to 2 feet.
.thursday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a slight chance of showers through
early afternoon, then showers likely by mid afternoon. waves
building to 2 to 4 feet.
.thursday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.friday...south winds 10 to 20 knots increasing to 15 to
25 knots. a chance of showers, then showers likely. waves
subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.saturday...southwest gales to 35 knots becoming west 20 to
30 knots. a chance of showers. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
$$
(7/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 10/14/2025 10:01 AM America/New_York.
Valid through 10/14/2025 4:00 PM America/New_York.
fzus63 kmqt 141401
glfls
expires:202510142000;;122598
open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 14 2025
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 30.5 inch high over the canadian prairie builds into lake superior
today. this high shifts across the great lakes and northern ontario
by wednesday at around 30.4 inches. ridging weakens to 30.1 inches
over lake superior through thursday as troughing develops over the
plains and the parent high moves east. thursday night through
friday, a deepening 29.4 inch low develops over the northern plains
and lifts near to lake winnipeg. this low is projected to bring 29.5
to 29.6 inch troughing over lake superior saturday as the low
traverses northern ontario. by sunday afternoon, another low
develops over lower michigan, then lifts north into ontario and
quebec into early monday.
lsz265-142000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt tue oct 14 2025
.rest of today...north winds 10 to 20 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet.
.tonight...north winds 5 to 15 knots. waves subsiding to calm to
2 feet.
.wednesday...north winds 5 to 15 knots backing northwest in the
afternoon, then veering east late. waves calm to 2 feet.
.wednesday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet.
.thursday...south winds 10 to 20 knots increasing to 20 to
30 knots by mid afternoon. a slight chance of showers through
early afternoon, then showers likely by mid afternoon. waves calm
to 2 feet.
.thursday night...south winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. showers. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet.
.friday...south winds 15 to 25 knots. a chance of showers. waves
calm to 2 feet.
.saturday...west winds 15 to 25 knots. a chance of showers. waves
building to 1 to 3 feet.
$$
(8/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 10/14/2025 10:01 AM America/New_York.
Valid through 10/14/2025 4:00 PM America/New_York.
fzus63 kmqt 141401
glfls
expires:202510142000;;122599
open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 14 2025
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 30.5 inch high over the canadian prairie builds into lake superior
today. this high shifts across the great lakes and northern ontario
by wednesday at around 30.4 inches. ridging weakens to 30.1 inches
over lake superior through thursday as troughing develops over the
plains and the parent high moves east. thursday night through
friday, a deepening 29.4 inch low develops over the northern plains
and lifts near to lake winnipeg. this low is projected to bring 29.5
to 29.6 inch troughing over lake superior saturday as the low
traverses northern ontario. by sunday afternoon, another low
develops over lower michigan, then lifts north into ontario and
quebec into early monday.
lsz266-142000-
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 tue oct 14 2025
.rest of today...north winds 15 to 25 knots backing northwest in
the afternoon. waves 3 to 6 feet occasionally to 8 feet subsiding
to 2 to 4 feet.
.tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet.
.wednesday...north winds 5 to 15 knots backing northwest in the
afternoon. waves calm to 2 feet.
.wednesday night...northwest winds 5 to 15 knots backing south
after midnight. waves calm to 2 feet.
.thursday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 2 to 4 feet.
.thursday night...south winds 20 to 30 knots. showers. waves
building to 3 to 6 feet occasionally to 8 feet.
.friday...south winds 15 to 25 knots. showers. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.saturday...west winds 15 to 25 knots. a chance of showers. waves
building to 3 to 6 feet occasionally to 8 feet.
$$
(9/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 10/14/2025 10:01 AM America/New_York.
Valid through 10/14/2025 4:00 PM America/New_York.
fzus63 kmqt 141401
glfls
expires:202510142000;;122600
open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 14 2025
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 30.5 inch high over the canadian prairie builds into lake superior
today. this high shifts across the great lakes and northern ontario
by wednesday at around 30.4 inches. ridging weakens to 30.1 inches
over lake superior through thursday as troughing develops over the
plains and the parent high moves east. thursday night through
friday, a deepening 29.4 inch low develops over the northern plains
and lifts near to lake winnipeg. this low is projected to bring 29.5
to 29.6 inch troughing over lake superior saturday as the low
traverses northern ontario. by sunday afternoon, another low
develops over lower michigan, then lifts north into ontario and
quebec into early monday.
lsz267-142000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt tue oct 14 2025
.rest of today...northwest winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet subsiding to 2 to 4 feet.
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then veering northeast late. waves
subsiding to calm to 2 feet.
.wednesday...north winds 5 to 15 knots backing northwest in the
afternoon. waves calm to 2 feet.
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet.
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of showers by mid afternoon.
waves calm to 2 feet.
.thursday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. showers. waves building to 3 to 5 feet
occasionally to 7 feet.
.friday...south winds 20 to 30 knots diminishing to 15 to
25 knots. showers. waves subsiding to 2 to 4 feet, then building
to 3 to 5 feet occasionally to 7 feet.
.saturday...south winds 10 to 20 knots veering west. showers
likely. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet.
$$
(10/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 10/14/2025 10:01 AM America/New_York.
Valid through 10/14/2025 4:00 PM America/New_York.
fzus63 kmqt 141401
glfls
expires:202510142000;;122595
open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 14 2025
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 30.5 inch high over the canadian prairie builds into lake superior
today. this high shifts across the great lakes and northern ontario
by wednesday at around 30.4 inches. ridging weakens to 30.1 inches
over lake superior through thursday as troughing develops over the
plains and the parent high moves east. thursday night through
friday, a deepening 29.4 inch low develops over the northern plains
and lifts near to lake winnipeg. this low is projected to bring 29.5
to 29.6 inch troughing over lake superior saturday as the low
traverses northern ontario. by sunday afternoon, another low
develops over lower michigan, then lifts north into ontario and
quebec into early monday.
lsz162-142000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt tue oct 14 2025 /901 am cdt tue oct 14 2025/
.rest of today...north winds 5 to 15 knots backing southwest
late. a slight chance of showers by mid afternoon. waves calm to
2 feet.
.tonight...southwest winds 5 to 15 knots backing east after
midnight. a slight chance of showers through midnight. waves calm
to 2 feet.
.wednesday...east winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...east winds 5 to 15 knots veering southeast
after midnight. a slight chance of showers after midnight. waves
calm to 2 feet.
.thursday...southeast winds 10 to 20 knots. showers. waves calm
to 2 feet.
.thursday night...south winds 5 to 15 knots. showers likely.
waves calm to 2 feet.
.friday...south winds 10 to 20 knots becoming southwest 15 to
25 knots. a chance of showers. waves building to 1 to 3 feet.
.saturday...west winds 15 to 25 knots. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
1 to 3 feet.
$$
(11/11)
Latest Great Lakes Marine Forecast by KMQT
Issued 10/14/2025 10:01 AM America/New_York.
Valid through 10/14/2025 4:00 PM America/New_York.
fzus63 kmqt 141401
glfls
expires:202510142000;;122596
open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 14 2025
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 30.5 inch high over the canadian prairie builds into lake superior
today. this high shifts across the great lakes and northern ontario
by wednesday at around 30.4 inches. ridging weakens to 30.1 inches
over lake superior through thursday as troughing develops over the
plains and the parent high moves east. thursday night through
friday, a deepening 29.4 inch low develops over the northern plains
and lifts near to lake winnipeg. this low is projected to bring 29.5
to 29.6 inch troughing over lake superior saturday as the low
traverses northern ontario. by sunday afternoon, another low
develops over lower michigan, then lifts north into ontario and
quebec into early monday.
lsz263-142000-
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 tue oct 14 2025
.rest of today...north winds 5 to 15 knots. waves 1 to 3 feet
subsiding to calm to 2 feet.
.tonight...west winds less than 10 knots veering north late. a
slight chance of showers through midnight. waves calm to 2 feet.
.wednesday...east winds less than 10 knots veering southwest in
the afternoon. waves calm to 2 feet.
.wednesday night...southeast winds 5 to 15 knots veering south
after midnight. a slight chance of showers after midnight. waves
calm to 2 feet.
.thursday...south winds 10 to 20 knots. a chance of showers
through early afternoon, then showers by mid afternoon. waves
building to 1 to 3 feet.
.thursday night...south winds 10 to 20 knots. showers likely.
waves 1 to 3 feet.
.friday...south winds 10 to 20 knots becoming southwest 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet.
.saturday...west gales to 35 knots diminishing to 20 to 30 knots.
a chance of showers. waves building to 4 to 7 feet occasionally
to 9 feet, then subsiding to 3 to 5 feet occasionally to 7 feet.
$$
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