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(1/17)
Latest Great Lakes Marine Forecast by KBUF
Issued 2/23/2026 4:02 PM America/New_York.
Valid through 2/23/2026 11:00 PM America/New_York.
fzus61 kbuf 232102
glflo
expires:202602240400;;139226
open lake forecast for lake ontario
national weather service buffalo ny
402 pm est mon feb 23 2026
for waters beyond five nautical miles of shore on lake ontario
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 strong 28.8 inch low will continue to move northeast
to the canadian maritimes through tuesday. a 30.1 inch ridge will
briefly build over the lower great lakes tuesday. a 29.4 inch low
will then track from the upper great lakes tuesday to the ottawa
valley by late wednesday, with a trailing cold front crossing the
lake wednesday afternoon. a surface low of 29.5 inches will track
from the tennessee valley to the gulf of maine from thursday through
friday, staying well south and east of the lake.
loz062-063-240400-
lake ontario open waters from the niagara river to sodus bay-
402 pm est mon feb 23 2026
.tonight...northwest winds 15 to 25 knots. snow likely through
the early overnight, then a chance of snow showers late. waves
4 to 7 feet subsiding to 3 to 5 feet. waves occasionally around
9 feet.
.tuesday...northwest winds 15 to 20 knots becoming southwest
10 to 15 knots. a chance of snow showers in the morning. waves
3 to 5 feet subsiding to 1 to 3 feet.
.tuesday night...south winds 10 to 15 knots increasing to 15 to
25 knots. snow. waves 1 to 3 feet building to 3 to 6 feet.
.wednesday...southwest winds to 30 knots becoming west. snow in
the morning, then a chance of snow showers in the afternoon.
waves 5 to 8 feet building to 6 to 10 feet. waves occasionally
around 13 feet.
.wednesday night...west winds to 30 knots diminishing to 15 to
20 knots. snow showers likely. waves 7 to 11 feet subsiding to
4 to 7 feet. waves occasionally around 14 feet.
.thursday...west winds 10 to 15 knots becoming north. a chance of
snow thursday night. waves 3 to 6 feet subsiding to 1 to 3 feet.
.friday...west winds 10 to 15 knots becoming southwest and
increasing to 30 knots. waves 1 to 2 feet building to 5 to
8 feet. waves occasionally around 10 feet.
.saturday...southwest winds 15 to 25 knots becoming northwest. a
chance of snow showers saturday night. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet.
$$
(2/17)
Latest Great Lakes Marine Forecast by KBUF
Issued 2/23/2026 4:02 PM America/New_York.
Valid through 2/23/2026 11:00 PM America/New_York.
fzus61 kbuf 232102
glflo
expires:202602240400;;139227
open lake forecast for lake ontario
national weather service buffalo ny
402 pm est mon feb 23 2026
for waters beyond five nautical miles of shore on lake ontario
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 strong 28.8 inch low will continue to move northeast
to the canadian maritimes through tuesday. a 30.1 inch ridge will
briefly build over the lower great lakes tuesday. a 29.4 inch low
will then track from the upper great lakes tuesday to the ottawa
valley by late wednesday, with a trailing cold front crossing the
lake wednesday afternoon. a surface low of 29.5 inches will track
from the tennessee valley to the gulf of maine from thursday through
friday, staying well south and east of the lake.
loz064-065-240400-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 pm est mon feb 23 2026
.tonight...north winds 15 to 25 knots becoming northwest. a
chance of snow showers. waves 3 to 6 feet.
.tuesday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of snow showers early in the afternoon. waves
3 to 5 feet subsiding to 1 to 3 feet.
.tuesday night...southwest winds 5 to 15 knots becoming south and
increasing to 15 to 25 knots. a chance of snow showers in the
evening, then snow overnight. waves 2 feet or less building to
3 to 6 feet.
.wednesday...south winds to 30 knots becoming west. snow in the
morning, then a chance of snow showers in the afternoon. waves
3 to 6 feet building to 7 to 10 feet. waves occasionally around
13 feet.
.wednesday night...west winds to 30 knots diminishing to 15 to
25 knots. snow showers likely. waves 7 to 11 feet subsiding to
5 to 9 feet. waves occasionally around 14 feet.
.thursday...west winds 5 to 15 knots becoming north. a chance of
snow. waves 3 to 6 feet subsiding to 1 to 3 feet.
.friday...northwest winds 10 to 15 knots becoming south and
increasing to 15 to 25 knots. waves 2 feet or less building to
3 to 6 feet.
.saturday...southwest winds 15 to 25 knots becoming northwest. a
chance of snow showers saturday night. waves 3 to 6 feet building
to 4 to 7 feet, then subsiding to 3 to 6 feet. waves occasionally
around 9 feet.
$$
(3/17)
Latest Great Lakes Marine Forecast by KCLE
Issued 2/23/2026 3:22 PM America/New_York.
Valid through 2/23/2026 10:30 PM America/New_York.
fzus61 kcle 232022
glfle
expires:202602240330;;137896
open lake forecast for lake erie
national weather service cleveland oh
322 pm est mon feb 23 2026
for waters beyond five nautical miles of shore on lake erie
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 trough averaging 29.90 inches will linger over the region
this evening before a ridge averaging 30.20 inches will build
over lake erie late tonight into tuesday. low pressure 29.20
inches moves east across the great lakes for the middle of the
week. another low 29.80 inches will move east across the ohio
valley thursday, followed by a ridge averaging 30.00 inches on
friday before another cold front pushes east on saturday.
lez164>167-240330-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
322 pm est mon feb 23 2026
.tonight...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. a slight chance of snow this evening. waves in ice free
areas 3 to 5 feet subsiding to 1 to 3 feet.
.tuesday...west winds 5 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet.
.tuesday night...south winds 15 to 25 knots becoming southwest.
snow likely in the evening, then a chance of snow and rain
overnight. waves 2 to 4 feet building to 4 to 7 feet. waves
occasionally around 9 feet.
.wednesday...southwest winds 15 to 25 knots becoming west. waves
3 to 6 feet.
.wednesday night...west winds 15 to 20 knots becoming northwest
5 to 15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet.
.thursday...northeast winds 5 to 10 knots becoming northwest. a
chance of snow during the day. waves 2 feet or less.
.friday...southwest winds 10 to 15 knots increasing to 15 to
25 knots. waves 1 to 3 feet building to 3 to 5 feet.
.saturday...southwest winds 15 to 20 knots becoming north. waves
2 to 4 feet building to 3 to 5 feet.
wave heights are for ice free areas.
$$
(4/17)
Latest Great Lakes Marine Forecast by KCLE
Issued 2/23/2026 3:22 PM America/New_York.
Valid through 2/23/2026 10:30 PM America/New_York.
fzus61 kcle 232022
glfle
expires:202602240330;;137897
open lake forecast for lake erie
national weather service cleveland oh
322 pm est mon feb 23 2026
for waters beyond five nautical miles of shore on lake erie
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 trough averaging 29.90 inches will linger over the region
this evening before a ridge averaging 30.20 inches will build
over lake erie late tonight into tuesday. low pressure 29.20
inches moves east across the great lakes for the middle of the
week. another low 29.80 inches will move east across the ohio
valley thursday, followed by a ridge averaging 30.00 inches on
friday before another cold front pushes east on saturday.
lez061-168-169-240330-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
322 pm est mon feb 23 2026
.tonight...northwest winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of snow this evening, then a slight chance of
snow after midnight. the lake is mostly ice covered.
.tuesday...west winds 5 to 10 knots becoming south.
.tuesday night...south winds 10 to 15 knots becoming southwest
15 to 20 knots. snow.
.wednesday...southwest winds 15 to 25 knots becoming west. a
chance of snow in the morning.
.wednesday night...west winds 15 to 20 knots diminishing to 5 to
15 knots.
.thursday...southwest winds 5 to 10 knots becoming northwest. a
chance of snow during the day.
.friday...southwest winds 5 to 10 knots increasing to 15 to
25 knots.
.saturday...southwest winds 15 to 20 knots becoming north 10 to
15 knots.
waves omitted due to the lake being mostly ice covered.
$$
(5/17)
Latest Great Lakes Marine Forecast by KCLE
Issued 2/23/2026 3:22 PM America/New_York.
Valid through 2/23/2026 10:30 PM America/New_York.
fzus61 kcle 232022
glfle
expires:202602240330;;137895
open lake forecast for lake erie
national weather service cleveland oh
322 pm est mon feb 23 2026
for waters beyond five nautical miles of shore on lake erie
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 trough averaging 29.90 inches will linger over the region
this evening before a ridge averaging 30.20 inches will build
over lake erie late tonight into tuesday. low pressure 29.20
inches moves east across the great lakes for the middle of the
week. another low 29.80 inches will move east across the ohio
valley thursday, followed by a ridge averaging 30.00 inches on
friday before another cold front pushes east on saturday.
lez162-163-240330-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
322 pm est mon feb 23 2026
.tonight...northwest winds 5 to 15 knots. the lake is mostly ice
covered.
.tuesday...west winds 10 knots or less becoming south and
increasing to 15 to 20 knots in the afternoon.
.tuesday night...south winds 15 to 25 knots becoming west. snow
likely.
.wednesday...west winds 15 to 20 knots.
.wednesday night...west winds 5 to 15 knots becoming northwest.
.thursday...east winds 5 to 10 knots becoming west. a chance of
snow during the day.
.friday...southwest winds 10 to 15 knots increasing to 15 to
25 knots.
.saturday...southwest winds 15 to 20 knots becoming north.
waves omitted due to the lake being mostly ice covered.
$$
(6/17)
Latest Great Lakes Marine Forecast by KDTX
Issued 2/23/2026 3:39 PM America/New_York.
Valid through 2/23/2026 11:45 PM America/New_York.
fzus63 kdtx 232039
glfsc
expires:202602240445;;138504
lake st clair forecast
national weather service detroit/pontiac mi
339 pm est mon feb 23 2026
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...east coast low pressure loses influence this evening
in favor of high pressure averaging 30.10 inches by the time it
reaches the great lakes early tuesday morning. heavy freezing
spray concerns subside tonight as winds relax. the next low
pressure tracks across the northern great lakes late tuesday into
wednesday.
lcz460-240445-
lake st clair-
339 pm est mon feb 23 2026
.tonight...north winds 15 to 20 knots becoming northwest 5 to 10
knots. partly cloudy.
.tuesday...west winds 5 to 10 knots backing to the south late in the
morning...then increasing to 15 to 20 knots in the afternoon. partly
sunny.
.tuesday night...southwest winds 15 to 20 knots. mostly cloudy.
light snow likely .
.wednesday...west winds 15 to 20 knots. mostly cloudy.
.wednesday night...west winds 10 to 15 knots diminishing to 5 to 10
knots in the late evening and overnight. partly cloudy.
.thursday...northeast winds 5 to 10 knots. partly cloudy. a chance
of light snow.
.friday...south winds 20 to 25 knots. mostly clear.
.saturday...north winds 20 to 25 knots. partly cloudy.
waves omitted due to ice coverage.
$$
(7/17)
Latest Great Lakes Marine Forecast by KDTX
Issued 2/23/2026 3:39 PM America/New_York.
Valid through 2/23/2026 11:45 PM America/New_York.
fzus63 kdtx 232039
glflh
expires:202602240445;;138472
open lake forecast for lake huron
national weather service detroit/pontiac mi
339 pm est mon feb 23 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...east coast low pressure loses influence this evening
in favor of high pressure averaging 30.10 inches by the time it
reaches the great lakes early tuesday morning. heavy freezing
spray concerns subside tonight as winds relax. the next low
pressure tracks across the northern great lakes late tuesday into
wednesday.
lhz361-362-240445-
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-
339 pm est mon feb 23 2026
...heavy freezing spray warning in effect until 10 pm est this
evening...
.tonight...north winds 15 to 20 knots decreasing to 5 to
10 knots. heavy freezing spray in the evening. waves 5 to 7 feet
subsiding to 2 to 4 feet early in the morning. waves occasionally
around 10 feet.
.tuesday...north winds 5 to 10 knots becoming southeast 10 to
15 knots late in the morning...then increasing to 15 to 20 knots
early in the afternoon increasing to 20 to 25 knots with gusts to
around 30 knots late in the afternoon. a chance of snow in the
afternoon. waves 1 to 3 feet building to 6 to 9 feet. waves
occasionally around 12 feet.
.tuesday night...south winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots with gusts to around
30 knots by midnight...then veering to the southwest after
midnight. snow likely. waves 8 to 12 feet. waves occasionally
around 15 feet.
.wednesday...west winds 20 to 25 knots. gusts to 30 knots until
late afternoon. waves 6 to 9 feet. waves occasionally around
12 feet.
.wednesday night...west winds 20 to 25 knots decreasing to 10 to
15 knots. waves 5 to 7 feet. waves occasionally around 10 feet.
.thursday...west winds 5 to 10 knots backing to the south late in
the afternoon...then increasing to 10 to 15 knots late in the
evening. waves 1 to 3 feet building to 3 to 5 feet late in the
evening.
.friday...southwest winds 15 to 20 knots becoming south to
30 knots with gusts to 35 knot gales. waves 4 to 6 feet building
to 10 to 14 feet. waves occasionally around 18 feet.
.saturday...west at 35 knot gales becoming northwest to 30 knots
until early evening...then decreasing to 20 to 25 knots by
midnight. waves 12 to 16 feet. waves occasionally around 20 feet.
a gale warning may be needed.
wave heights are for ice free areas.
$$
(8/17)
Latest Great Lakes Marine Forecast by KDTX
Issued 2/23/2026 3:39 PM America/New_York.
Valid through 2/23/2026 11:45 PM America/New_York.
fzus63 kdtx 232039
glflh
expires:202602240445;;138473
open lake forecast for lake huron
national weather service detroit/pontiac mi
339 pm est mon feb 23 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...east coast low pressure loses influence this evening
in favor of high pressure averaging 30.10 inches by the time it
reaches the great lakes early tuesday morning. heavy freezing
spray concerns subside tonight as winds relax. the next low
pressure tracks across the northern great lakes late tuesday into
wednesday.
lhz363-462-240445-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
339 pm est mon feb 23 2026
.tonight...northwest winds 15 to 20 knots. freezing spray in the
evening. waves 6 to 9 feet. waves occasionally around 12 feet.
.tuesday...north winds 5 to 10 knots backing to the south late in
the morning...then increasing to 10 to 15 knots early in the
afternoon increasing to 15 to 20 knots late in the afternoon. a
chance of snow in the afternoon. waves 3 to 5 feet subsiding to
1 to 3 feet late in the morning...then building to 3 to 5 feet in
the afternoon.
.tuesday night...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 15 to 20 knots with gusts to around
30 knots in the late evening and overnight. snow likely. waves
6 to 9 feet. waves occasionally around 12 feet.
.wednesday...west winds 15 to 20 knots. waves 5 to 7 feet. waves
occasionally around 10 feet.
.wednesday night...west winds 15 to 20 knots decreasing to 5 to
10 knots. waves 4 to 6 feet. waves occasionally around 8 feet.
.thursday...west winds 5 to 10 knots backing to the southwest
late in the morning...then backing to the south late in the
afternoon increasing to 10 to 15 knots late in the evening. waves
1 to 3 feet building to 2 to 4 feet late in the evening.
.friday...southwest winds 15 to 20 knots increasing to 30 knots
with gusts to 35 knot gales. waves 5 to 7 feet building to 8 to
12 feet . waves occasionally around 15 feet.
.saturday...southwest winds 20 to 25 knots with gusts to around
30 knots becoming northwest 15 to 20 knots until early evening...
then increasing to 20 to 25 knots by midnight. waves 8 to
12 feet. waves occasionally around 15 feet.
wave heights are for ice free areas.
$$
(9/17)
Latest Great Lakes Marine Forecast by KDTX
Issued 2/23/2026 3:39 PM America/New_York.
Valid through 2/23/2026 11:45 PM America/New_York.
fzus63 kdtx 232039
glflh
expires:202602240445;;138474
open lake forecast for lake huron
national weather service detroit/pontiac mi
339 pm est mon feb 23 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...east coast low pressure loses influence this evening
in favor of high pressure averaging 30.10 inches by the time it
reaches the great lakes early tuesday morning. heavy freezing
spray concerns subside tonight as winds relax. the next low
pressure tracks across the northern great lakes late tuesday into
wednesday.
lhz463-464-240445-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
339 pm est mon feb 23 2026
.tonight...north winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. waves 6 to 9 feet. waves
occasionally around 12 feet.
.tuesday...northwest winds 5 to 10 knots backing to the southwest
late in the morning...then becoming south 10 to 15 knots early in
the afternoon increasing to 20 to 25 knots with gusts to around
30 knots late in the afternoon. a chance of snow in the
afternoon. waves 3 to 5 feet building to 4 to 6 feet late in the
afternoon. waves occasionally around 8 feet.
.tuesday night...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 15 to 20 knots after midnight. a
chance of snow in the evening. waves 6 to 9 feet. waves
occasionally around 12 feet.
.wednesday...west winds 20 to 25 knots decreasing to 15 to
20 knots early in the afternoon. waves 4 to 6 feet. waves
occasionally around 8 feet.
.wednesday night...west winds 15 to 20 knots decreasing to 5 to
10 knots. waves 3 to 5 feet subsiding to 1 to 3 feet in the late
evening and overnight.
.thursday...west winds 5 to 10 knots veering to the northeast
late in the afternoon...then becoming northeast 5 to 10 knots
late in the evening. a chance of. waves 2 feet or less.
.friday...southwest winds 10 to 15 knots becoming south to
30 knots. waves 2 to 4 feet building to 5 to 7 feet. waves
occasionally around 10 feet.
.saturday...southwest winds 20 to 25 knots with gusts to around
30 knots becoming west 15 to 20 knots in the late morning and
early afternoon...then veering to the northwest early in the
evening becoming north 20 to 25 knots by midnight. waves 5 to
7 feet building to 6 to 9 feet by midnight. waves occasionally
around 12 feet.
wave heights are for ice free areas.
$$
(10/17)
Latest Great Lakes Marine Forecast by KMKX
Issued 2/23/2026 2:24 PM US/Central.
Valid through 2/23/2026 10:15 PM US/Central.
fzus63 kmkx 232024
glflm
expires:202602240415;;137917
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
224 pm cst mon feb 23 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...
brisk northerly winds will gradually diminish into this evening
as high pressure of 30.7 inches over the upper mississippi river
valley moves across lake michigan tonight. light and variable
winds are expected tonight as the high passes.
southerly gales are then expected to develop late tuesday
morning and last through the afternoon for all of lake michigan.
a gale warning has been issued for this time period. the southerly
gales will develop as strengthening low pressure around 29.3
inches tracks from northern minnesota on monday through the
northern great lakes monday night.
winds will shift more west northwest behind the low and
associated cold front for tuesday night and wednesday. winds will
remain brisk but under gale force.
lmz080-366-565-567-669-671-673-675-777-779-868-870-872-874-876-
878-240415-
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-
224 pm cst mon feb 23 2026
sturgeon bay wi to point betsie mi south...
...gale warning in effect from tuesday morning through tuesday
afternoon...
.tonight...north winds 15 to 25 kt diminishing to 10 to 20 kt
through early evening becoming northwest 10 to 15 kt late this
evening, backing to west then becoming south 10 to 15 kt late.
freezing spray. scattered snow showers and slight chance of light
freezing rain. waves 8 to 12 ft occasionally to 16 ft subsiding to
2 to 4 ft.
.tuesday...south winds to 30 kt becoming southwest gales to
40 kt. snow showers likely in the afternoon. waves 4 to 6 ft
occasionally to 8 ft building to 10 to 14 ft occasionally to
18 ft.
.tuesday night...west winds to 30 kt becoming northwest. chance
of snow showers in the evening. freezing spray overnight. waves
8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 ft.
.wednesday...northwest winds to 30 kt diminishing to 15 to 25 kt.
freezing spray in the morning. waves 7 to 10 ft occasionally to
13 ft.
.wednesday night...northwest winds 10 to 15 kt becoming north
5 to 10 kt. waves 3 to 5 ft subsiding to 1 to 3 ft.
.thursday...southeast winds 10 to 15 kt veering to southwest.
waves 1 to 2 ft.
.thursday night...southwest winds 10 to 20 kt. waves 1 to 3 ft
building to 3 to 5 ft.
.friday...southwest winds to 30 kt. waves 4 to 7 ft occasionally
to 9 ft building to 6 to 9 ft occasionally to 12 ft.
.saturday...north winds to 30 kt diminishing to 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft.
$$
(11/17)
Latest Great Lakes Marine Forecast by KMKX
Issued 2/23/2026 2:24 PM US/Central.
Valid through 2/23/2026 10:15 PM US/Central.
fzus63 kmkx 232024
glflm
expires:202602240415;;137916
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
224 pm cst mon feb 23 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...
brisk northerly winds will gradually diminish into this evening
as high pressure of 30.7 inches over the upper mississippi river
valley moves across lake michigan tonight. light and variable
winds are expected tonight as the high passes.
southerly gales are then expected to develop late tuesday
morning and last through the afternoon for all of lake michigan.
a gale warning has been issued for this time period. the southerly
gales will develop as strengthening low pressure around 29.3
inches tracks from northern minnesota on monday through the
northern great lakes monday night.
winds will shift more west northwest behind the low and
associated cold front for tuesday night and wednesday. winds will
remain brisk but under gale force.
lmz261-362-364-563-240415-
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-
224 pm cst mon feb 23 2026
sturgeon bay wi to point betsie mi north...
...gale warning in effect from tuesday morning through tuesday
afternoon...
.tonight...north winds 15 to 25 kt diminishing to 10 to 20 kt
late, then diminishing to 5 to 10 kt late this evening becoming
northeast veering to south 10 to 15 kt late. slight chance of
light freezing rain. waves 4 to 6 ft occasionally to 8 ft
subsiding to 1 to 3 ft.
.tuesday...south winds to 30 kt increasing to gales to 40 kt late
in the morning, then becoming south gales to 40 kt early in the
afternoon becoming southwest gales to 35 kt late. chance of snow
showers in the morning, then snow showers in the afternoon. waves
4 to 6 ft occasionally to 8 ft building to 10 to 14 ft
occasionally to 18 ft.
.tuesday night...southwest winds to 30 kt becoming west. waves
8 to 12 ft occasionally to 16 ft subsiding to 6 to 9 ft
occasionally to 12 ft.
.wednesday...northwest winds to 30 kt diminishing to 15 to 25 kt.
freezing spray in the morning. waves 4 to 7 ft occasionally to
9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.wednesday night...northwest winds 10 to 20 kt diminishing to
5 to 10 kt overnight. waves 1 to 3 ft subsiding to 1 to 2 ft.
.thursday...southwest winds 10 to 15 kt. waves 1 to 2 ft.
.thursday night...southwest winds 10 to 20 kt increasing to 15 to
25 kt. waves 1 to 3 ft building to 3 to 5 ft.
.friday...southwest winds to 30 kt. waves 4 to 7 ft occasionally
to 9 ft building to 6 to 9 ft occasionally to 12 ft.
.saturday...northwest winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
$$
(12/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 2/23/2026 4:49 PM America/New_York.
Valid through 2/24/2026 1:00 AM America/New_York.
fzus63 kmqt 232149
glfls
expires:202602240600;;141823
open lake forecast for lake superior
national weather service marquette mi
449 pm est mon feb 23 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 over northern ontario weakens to 30.0 inches by
tuesday afternoon when it reaches quebec. a deepening 29.5 inch
low then moves across the northern plains tonight, moving through
the upper great lakes late tuesday through wednesday morning at
29.3 inches. weak ridging then builds back over lake superior at
around 29.8 inches for wednesday night before the next clipper low
approaches the lake from the northwest friday. expect troughing
of 29.4 inches to develop over lake superior friday evening before
a 30.6 inch high pressure over the canadian prairies brings 30.4
inch ridging over the lake by saturday evening.
lsz162-240600-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
449 pm est mon feb 23 2026 /349 pm cst mon feb 23 2026/
.late this afternoon...east winds 10 to 20 knots. a slight chance
of snow showers. waves 1 to 3 feet.
.tonight...southeast winds 10 to 20 knots veering south by
midnight, then increasing to 15 to 25 knots late. a chance of
snow showers. waves subsiding to calm to 2 feet, then building to
3 to 6 feet occasionally to 8 feet.
.tuesday...south winds 20 to 30 knots becoming southwest 15 to
25 knots by late morning, then veering west by mid afternoon.
freezing spray. snow showers in the morning. a chance of snow
showers in the afternoon. waves building to 4 to 8 feet
occasionally to 10 feet.
.tuesday night...northwest winds 20 to 30 knots increasing to
30 knots with a few gale force gusts to 35 knots possible by
midnight. heavy freezing spray. waves subsiding to 4 to 7 feet
occasionally to 9 feet.
.wednesday...northwest winds 15 to 25 knots becoming west 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet.
.wednesday night...northwest winds 5 to 15 knots backing
southwest after midnight. waves calm to 2 feet.
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet.
.thursday night...southwest winds 10 to 20 knots. waves building
to 2 to 4 feet.
.friday...southwest gales to 40 knots becoming northwest gales to
45 knots. heavy freezing spray. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet.
.saturday...northwest winds 20 to 30 knots becoming north 10 to
20 knots. waves subsiding to 1 to 3 feet.
note, wave height forecasts are for ice free areas.
$$
(13/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 2/23/2026 4:49 PM America/New_York.
Valid through 2/24/2026 1:00 AM America/New_York.
fzus63 kmqt 232149
glfls
expires:202602240600;;141824
open lake forecast for lake superior
national weather service marquette mi
449 pm est mon feb 23 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 over northern ontario weakens to 30.0 inches by
tuesday afternoon when it reaches quebec. a deepening 29.5 inch
low then moves across the northern plains tonight, moving through
the upper great lakes late tuesday through wednesday morning at
29.3 inches. weak ridging then builds back over lake superior at
around 29.8 inches for wednesday night before the next clipper low
approaches the lake from the northwest friday. expect troughing
of 29.4 inches to develop over lake superior friday evening before
a 30.6 inch high pressure over the canadian prairies brings 30.4
inch ridging over the lake by saturday evening.
lsz263-240600-
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-
449 pm est mon feb 23 2026
...heavy freezing spray warning in effect from 4 am est tuesday
through tuesday afternoon...
.late this afternoon...east winds 5 to 15 knots. a slight chance
of snow showers. waves 2 to 4 feet subsiding to 1 to 3 feet.
.tonight...southeast winds 5 to 15 knots becoming south 10 to
20 knots by midnight, then increasing to 20 to 30 knots late. a
slight chance of snow showers. waves subsiding to calm to 2 feet,
then building to 3 to 6 feet occasionally to 8 feet.
.tuesday...south winds 20 to 30 knots becoming southwest 15 to
25 knots by late morning, then veering west by mid afternoon.
freezing spray. snow showers in the morning. a chance of snow
showers in the afternoon. waves building to 5 to 9 feet
occasionally to 11 feet.
.tuesday night...northwest winds 20 to 30 knots increasing to
30 knots with a few gale force gusts to 35 knots possible by
midnight. a slight chance of snow showers in the evening. heavy
freezing spray. waves building to 7 to 10 feet occasionally to
13 feet, then subsiding to 5 to 8 feet occasionally to 10 feet.
.wednesday...northwest winds 20 to 30 knots becoming west 10 to
20 knots in the afternoon. heavy freezing spray in the morning.
waves subsiding to 1 to 3 feet.
.wednesday night...northwest winds 5 to 15 knots backing west
after midnight. waves subsiding to calm to 2 feet.
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves building to 1 to 3 feet.
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet.
.friday...southwest gales to 40 knots becoming west gales to
45 knots. heavy freezing spray. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet.
.saturday...northwest gales to 35 knots becoming north 15 to
25 knots. heavy freezing spray. waves subsiding to 3 to 6 feet
occasionally to 8 feet.
note, wave height forecasts are for ice free areas.
$$
(14/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 2/23/2026 4:49 PM America/New_York.
Valid through 2/24/2026 1:00 AM America/New_York.
fzus63 kmqt 232149
glfls
expires:202602240600;;141825
open lake forecast for lake superior
national weather service marquette mi
449 pm est mon feb 23 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 over northern ontario weakens to 30.0 inches by
tuesday afternoon when it reaches quebec. a deepening 29.5 inch
low then moves across the northern plains tonight, moving through
the upper great lakes late tuesday through wednesday morning at
29.3 inches. weak ridging then builds back over lake superior at
around 29.8 inches for wednesday night before the next clipper low
approaches the lake from the northwest friday. expect troughing
of 29.4 inches to develop over lake superior friday evening before
a 30.6 inch high pressure over the canadian prairies brings 30.4
inch ridging over the lake by saturday evening.
lsz264-240600-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
449 pm est mon feb 23 2026
...heavy freezing spray warning in effect from 4 am est tuesday
through tuesday afternoon...
...gale warning in effect from tuesday morning through tuesday
afternoon...
.late this afternoon...northeast winds 5 to 15 knots. a slight
chance of snow showers. waves 2 to 4 feet.
.tonight...east winds 5 to 15 knots becoming south 10 to 20 knots
by midnight, then increasing to 20 to 30 knots late. a slight
chance of snow showers. waves subsiding to calm to 2 feet, then
building to 4 to 7 feet occasionally to 9 feet.
.tuesday...south gales to 35 knots becoming southwest 15 to
25 knots by mid afternoon. heavy freezing spray. snow showers.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 6 to 9 feet occasionally to 11 feet.
.tuesday night...northwest winds 15 to 25 knots increasing to
gales to 35 knots by midnight, then diminishing to 20 to 30 knots
late. heavy freezing spray. a slight chance of snow showers.
waves building to 6 to 10 feet occasionally to 13 feet.
.wednesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. heavy freezing spray in the morning.
waves subsiding to 2 to 4 feet.
.wednesday night...northwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. waves subsiding to calm to 2 feet.
.thursday...southwest winds 5 to 15 knots. waves building to 1 to
3 feet.
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet.
.friday...southwest gales to 45 knots becoming northwest storm
force winds to 55 knots. heavy freezing spray. waves building to
15 to 20 feet occasionally to 25 feet.
.saturday...northwest gales to 45 knots becoming north 20 to
30 knots. heavy freezing spray. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 6 to 9 feet
occasionally to 11 feet.
note, wave height forecasts are for ice free areas.
$$
(15/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 2/23/2026 4:49 PM America/New_York.
Valid through 2/24/2026 1:00 AM America/New_York.
fzus63 kmqt 232149
glfls
expires:202602240600;;141826
open lake forecast for lake superior
national weather service marquette mi
449 pm est mon feb 23 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 over northern ontario weakens to 30.0 inches by
tuesday afternoon when it reaches quebec. a deepening 29.5 inch
low then moves across the northern plains tonight, moving through
the upper great lakes late tuesday through wednesday morning at
29.3 inches. weak ridging then builds back over lake superior at
around 29.8 inches for wednesday night before the next clipper low
approaches the lake from the northwest friday. expect troughing
of 29.4 inches to develop over lake superior friday evening before
a 30.6 inch high pressure over the canadian prairies brings 30.4
inch ridging over the lake by saturday evening.
lsz265-240600-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
449 pm est mon feb 23 2026
...heavy freezing spray warning in effect from tuesday morning
through tuesday afternoon...
...gale warning in effect from tuesday morning through tuesday
afternoon...
.late this afternoon...north winds 10 to 20 knots. a slight
chance of snow showers. waves 3 to 6 feet occasionally to 8 feet.
.tonight...north winds 5 to 15 knots veering south by midnight,
then increasing to 20 to 30 knots late. a slight chance of snow
showers in the evening. waves subsiding to calm to 2 feet, then
building to 3 to 6 feet occasionally to 8 feet.
.tuesday...south gales to 35 knots becoming southwest 15 to
25 knots by mid afternoon. heavy freezing spray. snow showers.
waves building to 6 to 9 feet occasionally to 11 feet, then
subsiding to 2 to 4 feet.
.tuesday night...west winds 20 to 30 knots becoming northwest
gales to 35 knots by midnight. a chance of snow showers. heavy
freezing spray after midnight. waves building to 5 to 8 feet
occasionally to 10 feet.
.wednesday...northwest gales to 35 knots diminishing to 15 to
25 knots in the afternoon. heavy freezing spray in the morning. a
slight chance of snow showers in the morning. waves subsiding to
2 to 4 feet.
.wednesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet.
.thursday...southwest winds 10 to 20 knots backing south in the
afternoon. waves calm to 2 feet.
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 1 to 3 feet.
.friday...southwest gales to 40 knots becoming west storm force
winds to 55 knots. heavy freezing spray. waves building to 10 to
14 feet occasionally to 18 feet.
.saturday...northwest gales to 45 knots diminishing to 20 to
30 knots. heavy freezing spray. waves subsiding to 4 to 7 feet
occasionally to 9 feet, then building to 6 to 9 feet occasionally
to 11 feet.
note, wave height forecasts are for ice free areas.
$$
(16/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 2/23/2026 4:49 PM America/New_York.
Valid through 2/24/2026 1:00 AM America/New_York.
fzus63 kmqt 232149
glfls
expires:202602240600;;141827
open lake forecast for lake superior
national weather service marquette mi
449 pm est mon feb 23 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 over northern ontario weakens to 30.0 inches by
tuesday afternoon when it reaches quebec. a deepening 29.5 inch
low then moves across the northern plains tonight, moving through
the upper great lakes late tuesday through wednesday morning at
29.3 inches. weak ridging then builds back over lake superior at
around 29.8 inches for wednesday night before the next clipper low
approaches the lake from the northwest friday. expect troughing
of 29.4 inches to develop over lake superior friday evening before
a 30.6 inch high pressure over the canadian prairies brings 30.4
inch ridging over the lake by saturday evening.
lsz266-240600-
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-
449 pm est mon feb 23 2026
...heavy freezing spray warning in effect until 7 pm est this
evening...
...heavy freezing spray warning in effect from tuesday morning
through tuesday afternoon...
...gale warning in effect from tuesday morning through tuesday
evening...
.late this afternoon...north winds 10 to 20 knots. a slight
chance of snow showers. waves 3 to 6 feet occasionally to 8 feet.
.tonight...northeast winds 10 to 20 knots veering southeast by
midnight, then becoming south 20 to 30 knots late. a slight
chance of snow showers in the evening. waves subsiding to calm to
2 feet, then building to 3 to 6 feet occasionally to 8 feet.
.tuesday...south gales to 35 knots. heavy freezing spray. a
chance of snow showers in the morning. snow showers in the
afternoon. waves building to 11 to 15 feet occasionally to
19 feet, then subsiding to 8 to 11 feet occasionally to 14 feet.
.tuesday night...west winds 15 to 25 knots becoming northwest
gales to 35 knots by midnight. freezing spray. a chance of snow
showers. waves subsiding to 5 to 8 feet occasionally to 10 feet,
then building to 8 to 11 feet occasionally to 14 feet.
.wednesday...northwest gales to 35 knots diminishing to 20 to
30 knots in the afternoon. freezing spray. a chance of snow
showers. waves subsiding to 5 to 8 feet occasionally to 10 feet.
.wednesday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. freezing spray in the evening.
waves subsiding to 1 to 3 feet.
.thursday...southwest winds 10 to 20 knots becoming south 15 to
25 knots in the afternoon. waves subsiding to calm to 2 feet,
then building to 2 to 4 feet.
.thursday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight. waves building to 4 to 7 feet
occasionally to 9 feet.
.friday...south gales to 45 knots becoming west storm force winds
to 60 knots. heavy freezing spray. waves building to 20 to
25 feet occasionally to 31 feet.
.saturday...northwest gales to 45 knots. heavy freezing spray.
waves subsiding to 8 to 11 feet occasionally to 14 feet.
note, wave height forecasts are for ice free areas.
$$
(17/17)
Latest Great Lakes Marine Forecast by KMQT
Issued 2/23/2026 4:49 PM America/New_York.
Valid through 2/24/2026 1:00 AM America/New_York.
fzus63 kmqt 232149
glfls
expires:202602240600;;141828
open lake forecast for lake superior
national weather service marquette mi
449 pm est mon feb 23 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 over northern ontario weakens to 30.0 inches by
tuesday afternoon when it reaches quebec. a deepening 29.5 inch
low then moves across the northern plains tonight, moving through
the upper great lakes late tuesday through wednesday morning at
29.3 inches. weak ridging then builds back over lake superior at
around 29.8 inches for wednesday night before the next clipper low
approaches the lake from the northwest friday. expect troughing
of 29.4 inches to develop over lake superior friday evening before
a 30.6 inch high pressure over the canadian prairies brings 30.4
inch ridging over the lake by saturday evening.
lsz267-240600-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
449 pm est mon feb 23 2026
...heavy freezing spray warning in effect until 7 pm est this
evening...
...heavy freezing spray warning in effect from tuesday morning
through tuesday evening...
...gale warning in effect from tuesday morning through tuesday
evening...
.late this afternoon...north winds 15 to 25 knots. waves 2 to
4 feet.
.tonight...northeast winds 15 to 25 knots becoming east 10 to
20 knots by midnight, then becoming southeast 15 to 25 knots
late. a slight chance of snow showers in the evening. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.tuesday...southeast winds 20 to 30 knots increasing to gales to
40 knots by late morning, then becoming south gales to 35 knots
by mid afternoon. heavy freezing spray. a chance of snow showers
in the morning. snow showers in the afternoon. waves building to
8 to 12 feet occasionally to 15 feet.
.tuesday night...south winds 20 to 30 knots becoming west 15 to
25 knots by midnight, then becoming northwest 20 to 30 knots
late. freezing spray. snow showers in the evening. a chance of
snow showers after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet, then building to 7 to 10 feet
occasionally to 13 feet.
.wednesday...northwest winds 20 to 30 knots. freezing spray. a
slight chance of snow showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet.
.wednesday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. freezing spray in the evening.
waves subsiding to 1 to 3 feet.
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet.
.thursday night...south winds 15 to 25 knots veering southwest
after midnight. waves building to 3 to 6 feet occasionally to
8 feet.
.friday...south gales to 40 knots becoming west storm force winds
to 55 knots. a chance of snow showers, possibly mixed with rain.
heavy freezing spray. waves building to 20 to 25 feet
occasionally to 31 feet.
.saturday...northwest gales to 45 knots becoming north 20 to
30 knots. heavy freezing spray. waves subsiding to 7 to 10 feet
occasionally to 13 feet.
note, wave height forecasts are for ice free areas.
$$
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