(1/10)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/30/2026 9:45 PM America/New_York.
Valid through 11/1/2026 4:45 AM America/New_York.
fzus63 kdtx 010145
glflh
expires:202611010945;;052176
open lake forecast for lake huron
national weather service detroit/pontiac mi
945 pm edt sat oct 31 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, 30.50 inches, centered over the eastern
great lakes today, will expand into the mid atlantic on sunday
while increasing to 30.60 inches. this high will influence the
region through the weekend, sustaining relatively light winds. a
slow moving deepening low pressure system will move from the
central plains monday to northern minnesota tuesday. this system
will drag a slow moving cold front into the great lakes region
tuesday night into wednesday as the low lifts into northern
ontario.
lhz462>464-010945-
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-
945 pm edt sat oct 31 2026
.rest of tonight...south winds 10 to 15 knots. sprinkles this
evening. waves 1 to 3 feet.
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
in the afternoon. waves 1 to 3 feet.
.sunday night...south winds 5 to 10 knots. waves 2 feet or less.
.monday...south winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. waves 2 feet or less.
.monday night...south winds 10 to 15 knots increasing to 15 to
20 knots after midnight. a chance of rain after midnight. waves
1 to 3 feet building to 2 to 4 feet after midnight.
.tuesday...south winds 15 to 20 knots. a chance of rain. a chance
of rain late in the evening. waves 4 to 6 feet. waves
occasionally around 8 feet.
.wednesday...south winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. a chance of rain early in the morning...
then rain likely in the late morning and early afternoon. a
chance of rain . waves 3 to 5 feet.
.thursday...south winds 10 to 15 knots backing to the north . a
chance of rain. waves 2 to 4 feet subsiding to 1 to 3 feet until
early evening...then building to 2 to 4 feet by midnight.
$$
(2/10)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/30/2026 9:45 PM America/New_York.
Valid through 11/1/2026 4:45 AM America/New_York.
fzus63 kdtx 010145
glflh
expires:202611010945;;052175
open lake forecast for lake huron
national weather service detroit/pontiac mi
945 pm edt sat oct 31 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, 30.50 inches, centered over the eastern
great lakes today, will expand into the mid atlantic on sunday
while increasing to 30.60 inches. this high will influence the
region through the weekend, sustaining relatively light winds. a
slow moving deepening low pressure system will move from the
central plains monday to northern minnesota tuesday. this system
will drag a slow moving cold front into the great lakes region
tuesday night into wednesday as the low lifts into northern
ontario.
lhz361>363-010945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
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-
945 pm edt sat oct 31 2026
.rest of tonight...south winds 10 to 15 knots. sprinkles. waves
1 to 3 feet.
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
in the afternoon. a chance of rain in the morning. waves 1 to
3 feet.
.sunday night...south winds 5 to 10 knots becoming light and
variable. waves 2 feet or less.
.monday...light and variable winds becoming south 5 to 10 knots
in the late morning and afternoon. waves 2 feet or less.
.monday night...southeast winds 10 to 15 knots veering to the
south in the late evening and overnight. a chance of rain. waves
1 to 3 feet building to 2 to 4 feet in the late evening and
overnight.
.tuesday...south winds 15 to 20 knots. gusts to 30 knots late in
the morning. rain likely in the morning...then a chance of rain.
waves 4 to 6 feet.
.wednesday...south winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. a chance of rain. waves 4 to 6 feet.
.thursday...south winds 10 to 15 knots backing to the north. a
chance of rain. waves 2 to 4 feet. waves occasionally around
8 feet.
$$
(3/10)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/30/2026 9:01 PM US/Central.
Valid through 11/1/2026 3:30 AM US/Central.
fzus63 kmkx 010201
glflm
expires:202611010930;;052449
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 pm cdt sat oct 31 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...
30.5 inch high pressure will linger over the mid atlantic conus
through sunday, gradually weakening and retreating east into the
atlantic ocean thereafter. this will allow light south to
southeast winds to continue across the lake through sunday night.
low pressure near 29.4 inches will develop over eastern colorado
sunday evening, progressing into the upper mississippi river
valley into early tuesday morning. southerly winds will steadily
become gusty ahead of the approaching low, approaching or
exceeding gale force over at least the central third of the lake
on tuesday. anticipate that headlines will become necessary in
later forecasts.
winds could remain breezy at times through midweek as 30.1 inch
high pressure slowly builds into the canadian great plains. the
track of the aforementioned low pressure system is not yet
certain; we could continue to see some breezy southerly winds
midweek if it lingers near wi, or transition to northwest (or
even due north) post-cold-front wind flow if it exits northeast.
in either case, modest north winds are looking likely late this
week as high pressure drifts east into ontario canada.
lmz261-362-364-366-563-565-567-868-010930-
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-
901 pm cdt sat oct 31 2026
sheboygan wi to pentwater mi north...
.rest of tonight...south winds 10 to 20 kt diminishing to 10 to
15 kt. slight chance of showers. waves 2 to 4 ft subsiding to
1 to 3 ft.
.sunday...south winds 10 to 15 kt becoming southwest. waves 1 to
2 ft.
.sunday night...south winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft.
.monday...south winds 15 to 25 kt increasing to 30 kt. waves 3 to
5 ft building to 5 to 8 ft occasionally to 10 ft.
.monday night...south winds to 30 kt. chance of showers in the
evening, then showers overnight. waves 6 to 9 ft occasionally to
12 ft building to 8 to 11 ft occasionally to 14 ft.
.tuesday...south gales to 40 kt. showers. waves 12 to 16 ft
occasionally to 20 ft.
.tuesday night...south winds to 30 kt becoming southwest 15 to
25 kt. showers likely. waves 10 to 14 ft occasionally to 18 ft
subsiding to 6 to 9 ft occasionally to 12 ft.
.wednesday...southwest winds 15 to 25 kt. chance of showers.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft.
.thursday...north winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft.
$$
(4/10)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/30/2026 9:01 PM US/Central.
Valid through 11/1/2026 3:30 AM US/Central.
fzus63 kmkx 010201
glflm
expires:202611010930;;052450
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 pm cdt sat oct 31 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...
30.5 inch high pressure will linger over the mid atlantic conus
through sunday, gradually weakening and retreating east into the
atlantic ocean thereafter. this will allow light south to
southeast winds to continue across the lake through sunday night.
low pressure near 29.4 inches will develop over eastern colorado
sunday evening, progressing into the upper mississippi river
valley into early tuesday morning. southerly winds will steadily
become gusty ahead of the approaching low, approaching or
exceeding gale force over at least the central third of the lake
on tuesday. anticipate that headlines will become necessary in
later forecasts.
winds could remain breezy at times through midweek as 30.1 inch
high pressure slowly builds into the canadian great plains. the
track of the aforementioned low pressure system is not yet
certain; we could continue to see some breezy southerly winds
midweek if it lingers near wi, or transition to northwest (or
even due north) post-cold-front wind flow if it exits northeast.
in either case, modest north winds are looking likely late this
week as high pressure drifts east into ontario canada.
lmz080-669-671-673-675-777-779-870-872-874-876-878-010930-
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-
901 pm cdt sat oct 31 2026
sheboygan wi to pentwater mi south...
.rest of tonight...southeast winds 10 to 15 kt becoming south.
slight chance of showers. waves 2 to 4 ft subsiding to 1 to 2 ft.
.sunday...south winds 5 to 10 kt. waves 1 to 2 ft.
.sunday night...south winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.
.monday...south winds 15 to 25 kt increasing to 30 kt. waves 4 to
6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to
10 ft.
.monday night...south winds to 30 kt. chance of showers. waves
6 to 9 ft occasionally to 12 ft building to 8 to 11 ft
occasionally to 14 ft.
.tuesday...south gales to 40 kt. showers likely. waves 12 to 16
ft occasionally to 20 ft.
.tuesday night...south winds to 30 kt diminishing to 15 to 25 kt.
showers likely. waves 10 to 14 ft occasionally to 18 ft subsiding
to 6 to 9 ft occasionally to 12 ft.
.wednesday...south winds 15 to 25 kt becoming southwest. chance
of showers. waves 5 to 8 ft occasionally to 10 ft.
.thursday...north winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft.
$$
(5/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/30/2026 10:01 PM America/New_York.
Valid through 11/1/2026 3:00 AM America/New_York.
fzus63 kmqt 010201
glfls
expires:202611010800;;052447
open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat oct 31 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 30.5 inch high pressure over the eastern great lakes will continue
to slowly move southeast, reaching the eastern seaboard sunday
night. this continues to extend a 30.2 inch ridge over lake superior
through sunday. thereafter a 29.4 inch low will move from colorado
to the plains on monday, then lift into minnesota monday evening,
eventually passing over western lake superior at 29.7 inches on
tuesday. this low then passes north towards james bay tuesday night.
in its wake, high pressure ridging of 30.0 inches builds back over
lake superior by late wednesday through friday.
lsz267-010800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt sat oct 31 2026
.rest of tonight...south winds 10 to 20 knots. isolated showers
after midnight. waves calm to 2 feet.
.sunday...south winds 10 to 20 knots becoming southwest 5 to
15 knots in the afternoon. a slight chance of showers through
early afternoon. waves calm to 2 feet.
.sunday night...south winds 5 to 15 knots. waves calm to 2 feet.
.monday...south winds 10 to 20 knots backing southeast by mid
afternoon. a chance of showers by mid afternoon. waves calm to
2 feet.
.monday night...southeast winds 15 to 25 knots. showers. waves
building to 2 to 4 feet.
.tuesday...south winds 20 to 30 knots. showers. waves building to
3 to 6 feet occasionally to 8 feet.
.tuesday night...south winds 15 to 25 knots. showers through
midnight, then a chance of showers after midnight. waves
subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.wednesday...southwest winds 20 to 30 knots becoming north 15 to
25 knots. a chance of showers. waves subsiding to 2 to 4 feet.
.thursday...north winds 15 to 25 knots veering northeast. waves
2 to 4 feet.
$$
(6/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/30/2026 10:01 PM America/New_York.
Valid through 11/1/2026 3:00 AM America/New_York.
fzus63 kmqt 010201
glfls
expires:202611010800;;052442
open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat oct 31 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 30.5 inch high pressure over the eastern great lakes will continue
to slowly move southeast, reaching the eastern seaboard sunday
night. this continues to extend a 30.2 inch ridge over lake superior
through sunday. thereafter a 29.4 inch low will move from colorado
to the plains on monday, then lift into minnesota monday evening,
eventually passing over western lake superior at 29.7 inches on
tuesday. this low then passes north towards james bay tuesday night.
in its wake, high pressure ridging of 30.0 inches builds back over
lake superior by late wednesday through friday.
lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt sat oct 31 2026 /900 pm cdt sat oct 31 2026/
.rest of tonight...east winds 5 to 15 knots diminishing to less
than 10 knots after midnight, then backing north late. scattered
showers. waves calm to 2 feet.
.sunday...southwest winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing south late. waves calm to
2 feet.
.sunday night...east winds less than 10 knots increasing to 5 to
15 knots after midnight. waves calm to 2 feet.
.monday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a chance of showers through early afternoon,
then showers by mid afternoon. waves calm to 2 feet.
.monday night...east winds 15 to 25 knots. showers. waves
building to 1 to 3 feet.
.tuesday...southeast winds 15 to 25 knots veering west by mid
afternoon. showers. waves building to 2 to 4 feet, then subsiding
to 1 to 3 feet.
.tuesday night...west winds 15 to 25 knots. a chance of showers.
waves building to 2 to 4 feet.
.wednesday...west winds 15 to 25 knots becoming north 10 to
20 knots. a chance of showers. waves subsiding to calm to 2 feet.
.thursday...northeast winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet.
$$
(7/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/30/2026 10:01 PM America/New_York.
Valid through 11/1/2026 3:00 AM America/New_York.
fzus63 kmqt 010201
glfls
expires:202611010800;;052446
open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat oct 31 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 30.5 inch high pressure over the eastern great lakes will continue
to slowly move southeast, reaching the eastern seaboard sunday
night. this continues to extend a 30.2 inch ridge over lake superior
through sunday. thereafter a 29.4 inch low will move from colorado
to the plains on monday, then lift into minnesota monday evening,
eventually passing over western lake superior at 29.7 inches on
tuesday. this low then passes north towards james bay tuesday night.
in its wake, high pressure ridging of 30.0 inches builds back over
lake superior by late wednesday through friday.
lsz266-010800-
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-
1000 pm edt sat oct 31 2026
.rest of tonight...south winds 10 to 20 knots. isolated showers.
waves calm to 2 feet.
.sunday...south winds 10 to 20 knots becoming southwest 5 to
15 knots in the afternoon. a slight chance of showers through
early afternoon. waves calm to 2 feet.
.sunday night...south winds 5 to 15 knots increasing to 10 to
20 knots late. waves calm to 2 feet.
.monday...south winds 10 to 20 knots becoming southeast 15 to
25 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 1 to 3 feet.
.monday night...southeast 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.
.tuesday...south gales to 35 knots diminishing to 20 to 30 knots
by mid afternoon. showers. waves building to 3 to 6 feet
occasionally to 8 feet.
.tuesday night...south winds 20 to 30 knots veering southwest
after midnight. showers likely through midnight, then a chance of
showers after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.wednesday...west winds 15 to 25 knots veering north. a chance of
showers. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 1 to 3 feet.
.thursday...north winds 15 to 25 knots veering northeast. waves
2 to 4 feet.
$$
(8/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/30/2026 10:01 PM America/New_York.
Valid through 11/1/2026 3:00 AM America/New_York.
fzus63 kmqt 010201
glfls
expires:202611010800;;052443
open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat oct 31 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 30.5 inch high pressure over the eastern great lakes will continue
to slowly move southeast, reaching the eastern seaboard sunday
night. this continues to extend a 30.2 inch ridge over lake superior
through sunday. thereafter a 29.4 inch low will move from colorado
to the plains on monday, then lift into minnesota monday evening,
eventually passing over western lake superior at 29.7 inches on
tuesday. this low then passes north towards james bay tuesday night.
in its wake, high pressure ridging of 30.0 inches builds back over
lake superior by late wednesday through friday.
lsz263-010800-
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-
1000 pm edt sat oct 31 2026
.rest of tonight...south winds less than 10 knots increasing to
5 to 15 knots after midnight. isolated showers. waves calm to
2 feet.
.sunday...southwest winds 5 to 15 knots. a slight chance of
showers through early afternoon. waves calm to 2 feet.
.sunday night...south winds 5 to 15 knots. waves calm to 2 feet.
.monday...southeast winds 5 to 15 knots. showers likely by mid
afternoon. waves calm to 2 feet.
.monday night...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. showers. waves building to 2 to 4 feet.
.tuesday...southeast winds 10 to 20 knots veering southwest by
mid afternoon. showers. waves 2 to 4 feet.
.tuesday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. showers likely. waves building to
3 to 5 feet occasionally to 7 feet.
.wednesday...west winds 10 to 20 knots veering north. a chance of
rain showers. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet.
.thursday...north winds 10 to 20 knots veering northeast. waves
subsiding to 1 to 3 feet.
$$
(9/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/30/2026 10:01 PM America/New_York.
Valid through 11/1/2026 3:00 AM America/New_York.
fzus63 kmqt 010201
glfls
expires:202611010800;;052444
open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat oct 31 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 30.5 inch high pressure over the eastern great lakes will continue
to slowly move southeast, reaching the eastern seaboard sunday
night. this continues to extend a 30.2 inch ridge over lake superior
through sunday. thereafter a 29.4 inch low will move from colorado
to the plains on monday, then lift into minnesota monday evening,
eventually passing over western lake superior at 29.7 inches on
tuesday. this low then passes north towards james bay tuesday night.
in its wake, high pressure ridging of 30.0 inches builds back over
lake superior by late wednesday through friday.
lsz264-010800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt sat oct 31 2026
.rest of tonight...south winds 5 to 15 knots veering southwest
late. isolated showers. waves calm to 2 feet.
.sunday...southwest winds 5 to 15 knots. a slight chance of
showers through early afternoon. waves calm to 2 feet.
.sunday night...southwest winds less than 10 knots becoming south
5 to 15 knots after midnight. waves calm to 2 feet.
.monday...south winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 1 to 3 feet.
.monday night...southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. showers. waves building to 3 to
5 feet occasionally to 7 feet.
.tuesday...southeast winds 15 to 25 knots veering south by mid
afternoon. showers. waves building to 3 to 6 feet occasionally to
8 feet.
.tuesday night...southwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. showers likely. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.wednesday...west winds 10 to 20 knots veering north. a chance of
showers. waves subsiding to 1 to 3 feet.
.thursday...north winds 15 to 25 knots becoming northeast 5 to
15 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
$$
(10/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/30/2026 10:01 PM America/New_York.
Valid through 11/1/2026 3:00 AM America/New_York.
fzus63 kmqt 010201
glfls
expires:202611010800;;052445
open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sat oct 31 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 30.5 inch high pressure over the eastern great lakes will continue
to slowly move southeast, reaching the eastern seaboard sunday
night. this continues to extend a 30.2 inch ridge over lake superior
through sunday. thereafter a 29.4 inch low will move from colorado
to the plains on monday, then lift into minnesota monday evening,
eventually passing over western lake superior at 29.7 inches on
tuesday. this low then passes north towards james bay tuesday night.
in its wake, high pressure ridging of 30.0 inches builds back over
lake superior by late wednesday through friday.
lsz265-010800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt sat oct 31 2026
.rest of tonight...south winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. scattered showers. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots veering southwest in the
afternoon, then backing south late. waves calm to 2 feet.
.sunday night...south winds 5 to 15 knots. waves calm to 2 feet.
.monday...south winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 1 to 3 feet.
.monday night...southeast winds 20 to 30 knots. showers. waves
building to 3 to 5 feet occasionally to 7 feet.
.tuesday...southeast winds 20 to 30 knots veering south by mid
afternoon. showers. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet.
.tuesday night...southwest winds 20 to 30 knots. showers likely
through midnight, then a chance of showers after midnight. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet.
.wednesday...west winds 20 to 30 knots veering north. a chance of
showers. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet.
.thursday...north winds 20 to 30 knots becoming northeast 15 to
25 knots. waves 2 to 4 feet.
$$
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