(1/6)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/18/2026 3:59 PM America/New_York.
Valid through 9/18/2026 10:15 PM America/New_York.
fzus61 kcle 181959
glfle
expires:202609190215;;672296
open lake forecast for lake erie
national weather service cleveland oh
359 pm edt fri sep 18 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...
high pressure 30.20 inches over the northern great lakes will
weaken tonight. this will allow a warm front to lift to south of
lake erie saturday as low pressure 29.80 inches moves east across
the southern great lakes saturday night into sunday. this will
pull a cold front across the lake sunday afternoon. a trough
averaging 29.90 inches will linger early next week.
lez162-163-190215-
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-
359 pm edt fri sep 18 2026
.tonight...northeast winds 10 to 15 knots becoming east. waves
1 to 2 feet.
.saturday...east winds around 10 knots. a slight chance of
showers early, then a chance of showers. a chance of showers with
a slight chance of thunderstorms late. waves 1 to 2 feet.
.saturday night...southeast winds around 10 knots becoming south.
showers with a chance of thunderstorms. waves 2 feet or less.
.sunday...west winds 10 to 15 knots becoming northeast 15 to
20 knots. showers likely in the morning, then a chance of showers
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet.
.sunday night...northeast winds 15 to 25 knots. a chance of
showers in the evening. waves 2 to 4 feet building to 4 to
7 feet. waves occasionally around 9 feet.
.monday...northeast winds to 30 knots. a chance of showers monday
night. waves 5 to 9 feet. waves occasionally around 11 feet.
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers during the day, then showers likely tuesday night. waves
5 to 9 feet. waves occasionally around 11 feet.
.wednesday...east winds 15 to 25 knots. showers likely during the
day, then a chance of showers wednesday night. waves 4 to 7 feet
subsiding to 2 to 4 feet. waves occasionally around 9 feet.
winds and waves higher in and near thunderstorms.
$$
(2/6)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/18/2026 3:59 PM America/New_York.
Valid through 9/18/2026 10:15 PM America/New_York.
fzus61 kcle 181959
glfle
expires:202609190215;;672297
open lake forecast for lake erie
national weather service cleveland oh
359 pm edt fri sep 18 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...
high pressure 30.20 inches over the northern great lakes will
weaken tonight. this will allow a warm front to lift to south of
lake erie saturday as low pressure 29.80 inches moves east across
the southern great lakes saturday night into sunday. this will
pull a cold front across the lake sunday afternoon. a trough
averaging 29.90 inches will linger early next week.
lez164>167-190215-
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-
359 pm edt fri sep 18 2026
.tonight...northeast winds 5 to 15 knots becoming east. waves
1 to 3 feet building to 2 to 4 feet.
.saturday...east winds 5 to 15 knots. a slight chance of showers
through early afternoon, then a chance of showers late. waves
1 to 3 feet.
.saturday night...east winds 10 to 15 knots becoming south. a
chance of showers and thunderstorms in the evening, then showers
with a chance of thunderstorms overnight. waves 1 to 3 feet.
.sunday...southwest winds 10 to 15 knots becoming northeast 15 to
20 knots. showers. waves 1 to 3 feet building to 3 to 5 feet.
.sunday night...northeast winds 15 to 25 knots. a chance of
showers in the evening. waves 3 to 6 feet building to 5 to
8 feet. waves occasionally around 10 feet.
.monday...northeast winds to 30 knots becoming east. a chance of
showers monday night. waves 7 to 11 feet. waves occasionally
around 14 feet.
.tuesday...east winds to 30 knots. a chance of showers. waves
7 to 11 feet. waves occasionally around 14 feet.
.wednesday...east winds 15 to 25 knots. showers likely during the
day, then a chance of showers wednesday night. waves 5 to 8 feet
subsiding to 3 to 6 feet. waves occasionally around 10 feet.
winds and waves higher in and near thunderstorms.
$$
(3/6)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/18/2026 3:48 PM America/New_York.
Valid through 9/19/2026 12:00 AM America/New_York.
fzus63 kdtx 181948
glfsc
expires:202609190400;;672081
lake st clair forecast
national weather service detroit/pontiac mi
348 pm edt fri sep 18 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 tracks north of the great lakes today. a
low pressure system follows a stalled front from the central
plains into the ohio valley this weekend. another area of high
pressure then builds into northern ontario on sunday.
lcz460-190400-
lake st clair-
348 pm edt fri sep 18 2026
.tonight...northeast winds 15 to 20 knots diminishing to 10 to 15
knots after midnight. partly cloudy this evening becoming mostly
cloudy. waves 1 to 3 feet.
.saturday...east winds 10 to 15 knots. mostly cloudy. a chance of
light showers in the morning. light showers likely in the afternoon.
waves 2 feet or less.
.saturday night...east winds 10 to 15 knots. light showers and a
chance of thunderstorms. waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots increasing to 15 to 20
knots early in the afternoon. mostly cloudy with a chance of
showers. waves 2 feet or less.
.sunday night...northeast winds 20 to 25 knots. mostly cloudy early
in the evening becoming partly cloudy. a chance of light showers
early in the evening. waves 1 to 3 feet.
.monday...northeast winds 15 to 20 knots increasing to 30 knots in
the evening. mostly cloudy. waves 1 to 3 feet building to 2 to 4
feet in the evening. a small craft advisory may be needed.
.tuesday...northeast winds to 30 knots with gusts to 35 knot gales.
mostly cloudy with a chance of showers. waves 2 to 4 feet. a gale
warning may be needed.
.wednesday...northeast winds to 30 knots. mostly cloudy with a
chance of showers. waves 2 to 4 feet.
$$
(4/6)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/18/2026 3:47 PM America/New_York.
Valid through 9/19/2026 12:00 AM America/New_York.
fzus63 kdtx 181947
glflh
expires:202609190400;;672078
open lake forecast for lake huron
national weather service detroit/pontiac mi
347 pm edt fri sep 18 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 tracks north of the great lakes today. a
low pressure system follows a stalled front from the central
plains into the ohio valley this weekend. another area of high
pressure then builds into northern ontario on sunday.
lhz462>464-190400-
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-
347 pm edt fri sep 18 2026
.tonight...northeast winds 10 to 15 knots becoming east 5 to
10 knots early in the morning. waves 3 to 5 feet subsiding to
1 to 3 feet after midnight.
.saturday...east winds 5 to 10 knots becoming southeast 10 to
15 knots in the late morning and afternoon. a chance of showers
in the afternoon. waves 1 to 3 feet.
.saturday night...southeast winds 10 to 15 knots becoming east
5 to 10 knots after midnight. a chance of showers after midnight.
waves 1 to 3 feet.
.sunday...northeast winds 10 to 15 knots becoming north 15 to
20 knots early in the afternoon. a chance of showers in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet early in the
afternoon.
.sunday night...northeast winds 15 to 20 knots increasing to
20 to 25 knots after midnight. waves 4 to 6 feet.
.monday...northeast winds 15 to 20 knots. waves 4 to 6 feet.
.tuesday...northeast winds 15 to 20 knots with gusts to around
30 knots becoming east 20 to 25 knots with gusts to around
30 knots by midnight. a chance of showers by midnight. waves 4 to
6 feet.
.wednesday...east winds 15 to 20 knots. a chance of showers.
waves 3 to 5 feet. waves occasionally around 8 feet.
$$
(5/6)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/18/2026 3:02 PM US/Central.
Valid through 9/18/2026 10:15 PM US/Central.
fzus63 kmkx 182002
glflm
expires:202609190315;;672625
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
302 pm cdt fri sep 18 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...
low pressure around 29.9 inches over the missouri river this
afternoon will track over or just south of the waters during the
day on saturday. winds will veer east-southeasterly ahead of the
low, becoming gusty at times. a few gusts could briefly approach
gales, particularly tonight and saturday morning. areas of
widespread showers and thunderstorms will accompany the passing
area of low pressure tonight through at least saturday night.
winds will trend northeasterly sunday through monday night, as
the aforementioned area of low pressure slowly moves into the
ohio river valley. additional rain showers will accompany the
passing low. high pressure around 30.5 inches will concurrently
slide into ontario from the canadian great plains, with gusty
winds expected through most of the late weekend to early week
time frame. similar to saturday, gusts could occasionally
approach gale thresholds during the sunday into monday night time
frame. winds will steadily taper tuesday through wednesday, as a
new area of high pressure around 30.3 inches builds into northern
wisconsin.
lmz261-362-364-366-563-565-567-868-190315-
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-
302 pm cdt fri sep 18 2026
sheboygan wi to pentwater mi north...
.tonight...northeast winds 10 to 20 kt becoming southeast 15 to
25 kt. chance of showers. waves 2 to 4 ft building to 3 to 5 ft.
.saturday...southeast winds to 30 kt becoming east 10 to 20 kt.
chance of showers. waves 4 to 7 ft occasionally to 9 ft.
.saturday night...east winds 10 to 20 kt becoming northeast.
chance of showers in the evening. waves 3 to 5 ft subsiding to
2 to 4 ft.
.sunday...northeast winds to 30 kt. waves 4 to 6 ft occasionally
to 8 ft building to 6 to 9 ft occasionally to 12 ft.
.sunday night...northeast winds to 30 kt becoming east 15 to
25 kt. waves 6 to 9 ft occasionally to 12 ft.
.monday...east winds to 30 kt becoming northeast. waves 4 to 7 ft
occasionally to 9 ft.
.monday night...east winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft.
.tuesday...east winds 15 to 25 kt becoming northeast to 30 kt.
waves 4 to 6 ft occasionally to 8 ft.
.wednesday...east winds 15 to 25 kt becoming northeast. waves
2 to 4 ft.
$$
(6/6)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/18/2026 3:02 PM US/Central.
Valid through 9/18/2026 10:15 PM US/Central.
fzus63 kmkx 182002
glflm
expires:202609190315;;672626
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
302 pm cdt fri sep 18 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...
low pressure around 29.9 inches over the missouri river this
afternoon will track over or just south of the waters during the
day on saturday. winds will veer east-southeasterly ahead of the
low, becoming gusty at times. a few gusts could briefly approach
gales, particularly tonight and saturday morning. areas of
widespread showers and thunderstorms will accompany the passing
area of low pressure tonight through at least saturday night.
winds will trend northeasterly sunday through monday night, as
the aforementioned area of low pressure slowly moves into the
ohio river valley. additional rain showers will accompany the
passing low. high pressure around 30.5 inches will concurrently
slide into ontario from the canadian great plains, with gusty
winds expected through most of the late weekend to early week
time frame. similar to saturday, gusts could occasionally
approach gale thresholds during the sunday into monday night time
frame. winds will steadily taper tuesday through wednesday, as a
new area of high pressure around 30.3 inches builds into northern
wisconsin.
lmz080-669-671-673-675-777-779-870-872-874-876-878-190315-
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-
302 pm cdt fri sep 18 2026
sheboygan wi to pentwater mi south...
.tonight...northeast winds 10 to 20 kt becoming east 15 to 25 kt,
then increasing to 30 kt late. slight chance of showers this
evening, then chance of showers and slight chance of
thunderstorms overnight. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft.
.saturday...southeast winds to 30 kt diminishing to 15 to 25 kt.
showers and slight chance of thunderstorms in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. waves 6 to 9 ft occasionally to 12 ft.
.saturday night...east winds 10 to 20 kt becoming northeast 15 to
25 kt. showers likely with a chance of thunderstorms in the
evening, then showers likely overnight. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.sunday...northeast winds to 30 kt increasing to gales to 35 kt.
chance of showers. waves 5 to 8 ft occasionally to 10 ft building
to 8 to 11 ft occasionally to 14 ft.
.sunday night...northeast gales to 35 kt becoming east to 30 kt.
chance of showers overnight. waves 8 to 11 ft occasionally to
14 ft subsiding to 7 to 10 ft occasionally to 13 ft.
.monday...east winds to 30 kt becoming northeast gales to 35 kt.
chance of showers. waves 8 to 12 ft occasionally to 16 ft
building to 10 to 14 ft occasionally to 18 ft.
.monday night...northeast gales to 35 kt becoming east to 30 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 ft.
.tuesday...northeast winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft.
.wednesday...northeast winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft.
$$
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