(1/6)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/20/2026 9:24 PM America/New_York.
Valid through 9/21/2026 4:15 AM America/New_York.
fzus61 kcle 210124
glfle
expires:202609210815;;792821
open lake forecast for lake erie
national weather service cleveland oh
924 pm edt sun sep 20 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 cold front will slowly push south of lake erie tonight. the lake
will be between high pressure 30.40 inches to the north and low
pressure 29.90 inches to the south for at least the first half of
the week. high pressure 30.20 inches will build over the great
lakes by friday.
lez162-163-210815-
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-
924 pm edt sun sep 20 2026
.overnight...northeast winds 15 to 25 knots. a chance of
showers. waves 2 to 4 feet building to 3 to 6 feet.
.monday...northeast winds 20 to 25 knots. a chance of showers
through early afternoon, then a slight chance of showers late.
waves 5 to 8 feet. waves occasionally around 10 feet.
.monday night...northeast winds 20 to 25 knots. waves 5 to
8 feet. waves occasionally around 10 feet.
.tuesday...northeast winds to 30 knots. waves 5 to 8 feet. waves
occasionally around 10 feet.
.tuesday night...northeast winds to 30 knots becoming east. a
chance of showers. waves 5 to 8 feet. waves occasionally around
10 feet.
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 3 to 6 feet.
.thursday...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet.
.friday...northeast winds 10 to 15 knots. waves 1 to 3 feet.
$$
(2/6)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/20/2026 9:24 PM America/New_York.
Valid through 9/21/2026 4:15 AM America/New_York.
fzus61 kcle 210124
glfle
expires:202609210815;;792822
open lake forecast for lake erie
national weather service cleveland oh
924 pm edt sun sep 20 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 cold front will slowly push south of lake erie tonight. the lake
will be between high pressure 30.40 inches to the north and low
pressure 29.90 inches to the south for at least the first half of
the week. high pressure 30.20 inches will build over the great
lakes by friday.
lez164>167-210815-
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-
924 pm edt sun sep 20 2026
.overnight...northeast winds 15 to 25 knots. a slight
chance of showers. waves 3 to 6 feet building to 4 to 7 feet.
waves occasionally around 9 feet.
.monday...northeast winds 20 to 25 knots. a slight chance of
showers through early afternoon, then a chance of showers late.
waves 5 to 9 feet. waves occasionally around 11 feet.
.monday night...northeast winds to 30 knots. waves 6 to 10 feet.
waves occasionally around 13 feet.
.tuesday...northeast winds to 30 knots. waves 6 to 10 feet. waves
occasionally around 13 feet.
.tuesday night...east winds to 30 knots. a chance of showers.
waves 5 to 9 feet. waves occasionally around 11 feet.
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 4 to 7 feet subsiding to 3 to 6 feet. waves occasionally
around 9 feet.
.thursday...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet.
.friday...east winds 10 to 15 knots becoming northeast. waves
1 to 3 feet.
$$
(3/6)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/20/2026 9:45 PM America/New_York.
Valid through 9/21/2026 5:45 AM America/New_York.
fzus63 kdtx 210145
glfsc
expires:202609210945;;793150
lake st clair forecast
national weather service detroit/pontiac mi
945 pm edt sun sep 20 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...high pressure, 30.40 inches, over northern ontario
will build southeast early this week. this will lead to prolong
moderate northeast winds over the central great lakes.
lcz460-210945-
lake st clair-
945 pm edt sun sep 20 2026
...small craft advisory in effect through wednesday evening...
.rest of tonight...northeast winds 20 to 25 knots. mostly cloudy.
waves 2 to 4 feet.
.monday...northeast winds 20 to 25 knots diminishing to 15 to 20
knots in the late morning and afternoon. mostly cloudy. waves 2 to 4
feet subsiding to 1 to 3 feet in the late morning and afternoon.
.monday night...northeast winds 20 to 25 knots increasing to 30
knots by midnight...then diminishing to 20 to 25 knots after
midnight. partly cloudy. waves 2 to 4 feet.
.tuesday...northeast winds 20 to 25 knots diminishing to 15 to 20
knots early in the afternoon. partly sunny. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon.
.tuesday night...northeast winds to 30 knots. mostly cloudy.
waves 3 to 5 feet. waves occasionally around 7 feet.
.wednesday...northeast winds 20 to 25 knots becoming east 15 to 20
knots in the afternoon...then increasing to 20 to 25 knots in the
evening. partly sunny in the morning...then partly cloudy with a
chance of light showers in the afternoon and evening. waves 2 to 4
feet.
.thursday...east winds 20 to 25 knots. partly cloudy. waves 1 to 3
feet.
.friday...northeast winds 10 to 15 knots. mostly clear. waves 2 feet
or less.
$$
(4/6)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/20/2026 9:45 PM America/New_York.
Valid through 9/21/2026 5:45 AM America/New_York.
fzus63 kdtx 210145
glflh
expires:202609210945;;793148
open lake forecast for lake huron
national weather service detroit/pontiac mi
945 pm edt sun sep 20 2026
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...high pressure, 30.40 inches, over northern ontario
will build southeast early this week. this will lead to prolong
moderate northeast winds over the central great lakes.
lhz363-462>464-210945-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
945 pm edt sun sep 20 2026
.rest of tonight...northeast winds 15 to 20 knots increasing to
20 to 25 knots after midnight. waves 5 to 7 feet. waves
occasionally around 10 feet.
.monday...northeast winds 15 to 20 knots. waves 5 to 7 feet.
waves occasionally around 10 feet.
.monday night...northeast winds 15 to 20 knots. waves 4 to
6 feet. waves occasionally around 8 feet.
.tuesday...northeast winds 15 to 20 knots. gusts to 30 knots
early in the afternoon. waves 4 to 6 feet. waves occasionally
around 8 feet.
.tuesday night...northeast winds 15 to 20 knots. gusts to
30 knots early in the evening. waves 4 to 6 feet.
.wednesday...east winds 15 to 20 knots. waves 3 to 5 feet. waves
occasionally around 8 feet.
.thursday...east winds 10 to 15 knots decreasing to 5 to 10 knots
. waves 2 to 4 feet subsiding to 1 to 3 feet.
.friday...east winds 5 to 10 knots backing to the northeast.
waves 2 feet or less.
$$
(5/6)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/20/2026 8:55 PM US/Central.
Valid through 9/21/2026 4:15 AM US/Central.
fzus63 kmkx 210155
glflm
expires:202609210915;;793261
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 pm cdt sun sep 20 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...
high pressure around 30.4 inches will build eastward through
monday, reaching quebec by monday night. the high pressure will
then largely remain in place through midweek, while strengthening
to around 30.7 inches. gusty northeast winds are expected tonight,
becoming more easterly and remaining gusty monday into wednesday.
a few brief gale force gusts may occur at time into monday,
mainly over southern portions of the lake, but coverage remains
sporadic. due to prevailing easterly flow, waves continue to build
and impact western portions of the lake through midweek. winds
then look to diminish toward the end of the week as the high
pressure system slowly weakens and moves farther east.
lmz261-362-364-366-563-565-567-868-210915-
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-
855 pm cdt sun sep 20 2026
sheboygan wi to pentwater mi north...
.rest of tonight...northeast winds to 30 kt diminishing to 15 to
25 kt after midnight, then becoming east 10 to 20 kt late. waves
7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft.
.monday...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
.monday night...northeast winds 15 to 25 kt becoming east 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft.
.tuesday...east winds 15 to 25 kt becoming northeast. waves 4 to
6 ft occasionally to 8 ft.
.tuesday night...east winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft.
.wednesday...east winds 15 to 25 kt becoming northeast. waves
2 to 4 ft.
.wednesday night...east winds 15 to 25 kt becoming southeast
10 to 20 kt. waves 2 to 4 ft.
.thursday...east winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft subsiding to 1 to 2 ft.
.friday...southeast winds 5 to 10 kt becoming east. waves 1 to
2 ft.
$$
(6/6)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/20/2026 8:55 PM US/Central.
Valid through 9/21/2026 4:15 AM US/Central.
fzus63 kmkx 210155
glflm
expires:202609210915;;793262
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 pm cdt sun sep 20 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...
high pressure around 30.4 inches will build eastward through
monday, reaching quebec by monday night. the high pressure will
then largely remain in place through midweek, while strengthening
to around 30.7 inches. gusty northeast winds are expected tonight,
becoming more easterly and remaining gusty monday into wednesday.
a few brief gale force gusts may occur at time into monday,
mainly over southern portions of the lake, but coverage remains
sporadic. due to prevailing easterly flow, waves continue to build
and impact western portions of the lake through midweek. winds
then look to diminish toward the end of the week as the high
pressure system slowly weakens and moves farther east.
lmz080-669-671-673-675-777-779-870-872-874-876-878-210915-
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-
855 pm cdt sun sep 20 2026
sheboygan wi to pentwater mi south...
.rest of tonight...northeast winds to 30 kt becoming east. waves
8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 ft.
.monday...east winds to 30 kt becoming northeast 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft.
.monday night...northeast winds 15 to 25 kt. waves 5 to 8 ft
occasionally to 10 ft.
.tuesday...northeast winds 15 to 25 kt increasing to 30 kt. waves
5 to 8 ft occasionally to 10 ft.
.tuesday night...northeast winds to 30 kt diminishing to 15 to
25 kt. waves 4 to 7 ft occasionally to 9 ft.
.wednesday...northeast winds 15 to 25 kt. waves 4 to 7 ft
occasionally to 9 ft.
.wednesday night...east winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft.
.thursday...east winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 3 to 5 ft.
.friday...east winds 10 to 15 kt becoming northeast. waves 1 to
3 ft.
$$
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