(1/13)
Latest Great Lakes Marine Forecast by KBUF
Issued 9/13/2026 10:11 PM America/New_York.
Valid through 9/14/2026 5:15 AM America/New_York.
fzus61 kbuf 140211
glflo
expires:202609140915;;413120
open lake forecast for lake ontario
national weather service buffalo ny
1011 pm edt sun sep 13 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 high pressure ridge averaging 30.2 inches slides
eastward across the lower great lakes through monday. the ridge
should exit eastward on tuesday and allow a warm front to sweep
northeastward across the lake. a cold front should sweep eastward
across the lake on wednesday and be followed by a ridge averaging
30.1 inches and building briefly from the upper great lakes. on
thursday, the front may shift northward to the lake, but then shift
back south later in the day as a weak low of 30.0 inches wobbles
eastward across the central great lakes. behind the low and front, a
ridge averaging 30.2 inches should build from the upper midwest
through friday.
loz063>065-140915-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1011 pm edt sun sep 13 2026
.overnight...northwest winds 15 to 25 knots. a chance of
showers late. waves 3 to 6 feet.
.monday...north winds 15 to 20 knots becoming northwest and
diminishing to 5 to 10 knots. a chance of showers early. waves
3 to 5 feet subsiding to 1 to 3 feet.
.monday night...northwest winds 5 to 10 knots becoming south.
waves 2 feet or less.
.tuesday...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet.
.tuesday night...south winds 15 to 25 knots. a chance of showers
overnight. waves 2 to 4 feet.
.wednesday...southwest winds 5 to 15 knots becoming northeast
10 knots or less. a chance of showers. waves 1 to 3 feet
subsiding to 1 foot or less.
.thursday...northeast winds 5 to 15 knots becoming north. a
chance of showers. waves 2 feet or less.
.friday...north winds 5 to 15 knots becoming east. a chance of
showers friday night. waves 2 feet or less.
$$
(2/13)
Latest Great Lakes Marine Forecast by KBUF
Issued 9/13/2026 10:11 PM America/New_York.
Valid through 9/14/2026 5:15 AM America/New_York.
fzus61 kbuf 140211
glflo
expires:202609140915;;413119
open lake forecast for lake ontario
national weather service buffalo ny
1011 pm edt sun sep 13 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 high pressure ridge averaging 30.2 inches slides
eastward across the lower great lakes through monday. the ridge
should exit eastward on tuesday and allow a warm front to sweep
northeastward across the lake. a cold front should sweep eastward
across the lake on wednesday and be followed by a ridge averaging
30.1 inches and building briefly from the upper great lakes. on
thursday, the front may shift northward to the lake, but then shift
back south later in the day as a weak low of 30.0 inches wobbles
eastward across the central great lakes. behind the low and front, a
ridge averaging 30.2 inches should build from the upper midwest
through friday.
loz062-140915-
lake ontario open waters from the niagara river to hamlin beach-
1011 pm edt sun sep 13 2026
.overnight...northwest winds 15 to 20 knots. a chance of
showers late. waves 3 to 5 feet.
.monday...north winds 5 to 15 knots becoming west. a chance of
showers early. waves 2 to 4 feet subsiding to 1 foot or less.
.monday night...west winds 10 knots or less becoming south. waves
1 foot or less.
.tuesday...south winds 5 to 15 knots. waves 2 feet or less.
.tuesday night...south winds 5 to 10 knots becoming southwest. a
chance of showers. waves 2 feet or less.
.wednesday...west winds 10 knots or less becoming northeast. a
chance of showers. waves 1 foot or less.
.thursday...northeast winds 5 to 10 knots becoming north. a
chance of showers during the day. waves 2 feet or less.
.friday...north winds 5 to 10 knots becoming east. a chance of
showers friday night. waves 2 feet or less.
$$
(3/13)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/14/2026 3:59 AM America/New_York.
Valid through 9/14/2026 10:15 AM America/New_York.
fzus61 kcle 140759
glfle
expires:202609141415;;425966
open lake forecast for lake erie
national weather service cleveland oh
359 am edt mon sep 14 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...
canadian high pressure 30.30 inches builds overhead today before
building to the east tonight. a warm front will lift east across
lake erie on tuesday before a cold front glides southeastward
tuesday night. the cold front will stall south of lake erie as a
stationary front averaging 30.20 inches on wednesday and thursday
before sinking south as a cold front thursday night.
a cold front continues to push south of lake erie as high pressure
of 30.30 inches builds over lake erie on monday. a stationary
front will set up in the vicinity of the lake beginning tuesday
night with pressure averaging 30.20 inches through thursday.
lez061-169-141415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
359 am edt mon sep 14 2026
.today...north winds 10 to 15 knots becoming light and variable.
waves 1 to 3 feet subsiding to 1 foot or less.
.tonight...south winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less.
.tuesday...south winds 10 to 15 knots. waves 1 to 3 feet.
.tuesday night...south winds 5 to 15 knots becoming southwest. a
chance of showers in the evening, then showers likely overnight.
waves 1 to 3 feet.
.wednesday...south winds 5 to 10 knots becoming northeast. a
chance of showers. waves 1 foot or less.
.thursday...southwest winds 5 to 10 knots becoming northeast.
showers likely during the day, then a chance of showers thursday
night. waves 2 feet or less.
.friday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less.
winds and waves higher in and near thunderstorms.
$$
(4/13)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/14/2026 3:59 AM America/New_York.
Valid through 9/14/2026 10:15 AM America/New_York.
fzus61 kcle 140759
glfle
expires:202609141415;;425965
open lake forecast for lake erie
national weather service cleveland oh
359 am edt mon sep 14 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...
canadian high pressure 30.30 inches builds overhead today before
building to the east tonight. a warm front will lift east across
lake erie on tuesday before a cold front glides southeastward
tuesday night. the cold front will stall south of lake erie as a
stationary front averaging 30.20 inches on wednesday and thursday
before sinking south as a cold front thursday night.
a cold front continues to push south of lake erie as high pressure
of 30.30 inches builds over lake erie on monday. a stationary
front will set up in the vicinity of the lake beginning tuesday
night with pressure averaging 30.20 inches through thursday.
lez165>168-141415-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
359 am edt mon sep 14 2026
.today...north winds 15 to 20 knots diminishing to less than
10 knots. a slight chance of waterspouts early. waves 2 to 4 feet
subsiding to 1 to 3 feet.
.tonight...east winds 10 knots or less becoming south and
increasing to 15 to 20 knots after midnight. waves 1 to 3 feet.
.tuesday...south winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet.
.tuesday night...south winds 5 to 15 knots becoming southwest. a
chance of showers and thunderstorms in the evening, then showers
likely with a chance of thunderstorms overnight. waves 1 to
3 feet.
.wednesday...northwest winds 5 to 10 knots becoming east. a
chance of showers. waves 2 feet or less.
.thursday...southwest winds 10 to 15 knots becoming northeast. a
chance of showers. waves 1 to 3 feet.
.friday...northeast winds 5 to 15 knots becoming east. waves 1 to
3 feet.
winds and waves higher in and near thunderstorms.
$$
(5/13)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/13/2026 9:34 PM America/New_York.
Valid through 9/14/2026 4:15 AM America/New_York.
fzus61 kcle 140134
glfle
expires:202609140815;;411789
open lake forecast for lake erie
national weather service cleveland oh
934 pm edt sun sep 13 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 continues to push south of lake erie as high pressure
of 30.30 inches builds over lake erie on monday. a stationary
front will set up in the vicinity of the lake beginning tuesday
night with pressure averaging 30.20 inches through thursday.
lez162-163-140815-
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-
934 pm edt sun sep 13 2026
.rest of tonight...northwest winds 15 to 25 knots becoming north
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet.
.monday...north winds 5 to 15 knots becoming east less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less.
.monday night...southeast winds 5 to 15 knots becoming south
15 to 20 knots. waves 1 to 3 feet.
.tuesday...south winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet.
.tuesday night...south winds 5 to 10 knots becoming west. showers
with a chance of thunderstorms in the evening, then showers
overnight. waves 2 feet or less.
.wednesday...northwest winds 5 to 10 knots becoming northeast. a
chance of showers. waves 1 foot or less.
.thursday...north winds 10 to 15 knots becoming northeast. a
chance of showers during the day. waves 2 feet or less.
.friday...northeast winds 10 to 15 knots becoming east. a chance
of showers friday night. waves 1 to 3 feet.
winds and waves higher in and near thunderstorms.
$$
(6/13)
Latest Great Lakes Marine Forecast by KCLE
Issued 9/13/2026 9:34 PM America/New_York.
Valid through 9/14/2026 4:15 AM America/New_York.
fzus61 kcle 140134
glfle
expires:202609140815;;411790
open lake forecast for lake erie
national weather service cleveland oh
934 pm edt sun sep 13 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 continues to push south of lake erie as high pressure
of 30.30 inches builds over lake erie on monday. a stationary
front will set up in the vicinity of the lake beginning tuesday
night with pressure averaging 30.20 inches through thursday.
lez164>168-140815-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
934 pm edt sun sep 13 2026
.rest of tonight...northwest winds 15 to 25 knots becoming north.
a slight chance of waterspouts after midnight. waves 3 to 6 feet.
.monday...north winds 15 to 20 knots diminishing to less than
10 knots in the afternoon. a slight chance of waterspouts early.
waves 3 to 5 feet subsiding to 1 to 3 feet.
.monday night...east winds 10 knots or less becoming south and
increasing to 15 to 20 knots overnight. waves 1 to 3 feet.
.tuesday...south winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet.
.tuesday night...south winds 5 to 15 knots becoming southwest.
showers. waves 1 to 3 feet.
.wednesday...southwest winds 5 to 10 knots becoming northeast. a
chance of showers. waves 1 to 2 feet.
.thursday...northeast winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet.
.friday...northeast winds 10 to 15 knots becoming east. waves
2 to 4 feet.
winds and waves higher in and near thunderstorms.
$$
(7/13)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/14/2026 3:52 AM America/New_York.
Valid through 9/14/2026 12:00 PM America/New_York.
fzus63 kdtx 140752
glfsc
expires:202609141600;;425836
lake st clair forecast
national weather service detroit/pontiac mi
352 am edt mon sep 14 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, 30.20 inches, settles in through the
day bringing relaxed flow and dry weather. low pressure, 29.40
inches, then tracks across northern ontario tuesday which
elevates wind gusts to gale force gusts across central and
northern lake huron. a gale warning is in effect there from late
tonight through tuesday afternoon.
lcz460-141600-
lake st clair-
352 am edt mon sep 14 2026
.today...north winds 10 to 15 knots diminishing to 5 to 10 knots in
the late morning and early afternoon...then becoming light and
variable late in the afternoon. sunny. waves 2 feet or less.
.tonight...southeast winds 5 to 10 knots becoming south 15 to 20
knots. partly cloudy. waves 2 feet or less.
.tuesday...south winds 20 to 25 knots diminishing to 15 to 20 knots
in the late morning and afternoon. mostly cloudy. a chance of light
showers in the late morning and early afternoon. waves 1 to 3 feet.
.tuesday night...southwest winds 10 to 15 knots diminishing to 5 to
10 knots by midnight...then veering to the northwest after midnight.
a chance of thunderstorms early in the evening. showers likely after
midnight. waves 2 feet or less.
.wednesday...north winds 10 to 15 knots becoming northeast 5 to 10
knots in the afternoon and evening. mostly cloudy. a chance of light
showers. waves 2 feet or less.
.thursday...north winds 5 to 10 knots. mostly cloudy. showers
likely. waves 2 feet or less.
.friday...northeast winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
$$
(8/13)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/14/2026 3:50 AM America/New_York.
Valid through 9/14/2026 12:00 PM America/New_York.
fzus63 kdtx 140750
glflh
expires:202609141600;;425830
open lake forecast for lake huron
national weather service detroit/pontiac mi
350 am edt mon sep 14 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, 30.20 inches, settles in through the
day bringing relaxed flow and dry weather. low pressure, 29.40
inches, then tracks across northern ontario tuesday which
elevates wind gusts to gale force gusts across central and
northern lake huron. a gale warning is in effect there from late
tonight through tuesday afternoon.
lhz361-141600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
350 am edt mon sep 14 2026
...gale warning in effect from late tonight through tuesday
afternoon...
.today...northwest winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less.
.tonight...southeast winds 10 to 15 knots becoming south 20 to
25 knots with gusts to 35 knot gales. showers after midnight.
waves 1 to 3 feet building to 4 to 6 feet in the late evening and
overnight. waves occasionally around 8 feet.
.tuesday...south winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and afternoon. gusts to 35 knot
gales. showers in the morning. waves 5 to 7 feet. waves
occasionally around 10 feet.
.tuesday night...southwest winds 10 to 15 knots veering to the
northwest by midnight...then decreasing to 5 to 10 knots after
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet after
midnight.
.wednesday...light and variable winds. a chance of showers late
in the evening. waves 2 feet or less.
.thursday...east winds 5 to 10 knots early in the morning
becoming light and variable...then becoming northwest 5 to
10 knots . a chance of showers early in the morning. waves 2 feet
or less.
.friday...north winds 5 to 10 knots until afternoon becoming
light and variable...then becoming southeast 5 to 10 knots by
midnight. a chance of showers by midnight. waves 2 feet or less.
$$
(9/13)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/14/2026 3:50 AM America/New_York.
Valid through 9/14/2026 12:00 PM America/New_York.
fzus63 kdtx 140750
glflh
expires:202609141600;;425831
open lake forecast for lake huron
national weather service detroit/pontiac mi
350 am edt mon sep 14 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, 30.20 inches, settles in through the
day bringing relaxed flow and dry weather. low pressure, 29.40
inches, then tracks across northern ontario tuesday which
elevates wind gusts to gale force gusts across central and
northern lake huron. a gale warning is in effect there from late
tonight through tuesday afternoon.
lhz362-363-141600-
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-
350 am edt mon sep 14 2026
...gale warning in effect from late tonight through tuesday
afternoon...
.today...northwest winds 10 to 15 knots becoming light and
variable. waves 3 to 5 feet subsiding to 1 to 3 feet in the
afternoon.
.tonight...southeast winds 5 to 10 knots increasing to 10 to
15 knots late in the evening...then becoming south 15 to 20 knots
with gusts to around 30 knots after midnight increasing to 20 to
25 knots with gusts to 35 knot gales early in the morning. a
chance of showers after midnight. waves 2 feet or less building
to 6 to 9 feet. waves occasionally around 12 feet.
.tuesday...south winds to 30 knots decreasing to 20 to 25 knots
early in the afternoon. gusts to 40 knot gales. a chance of
showers in the morning. waves 10 to 14 feet. waves occasionally
around 18 feet.
.tuesday night...southwest winds 10 to 15 knots veering to the
northwest after midnight. waves 4 to 6 feet subsiding to 2 to
4 feet after midnight. waves occasionally around 8 feet.
.wednesday...north winds 5 to 10 knots veering to the northeast
late in the evening. a chance of showers late in the evening.
waves 2 feet or less.
.thursday...north winds 5 to 10 knots. a chance of showers early
in the morning. waves 2 feet or less.
.friday...north winds 5 to 10 knots veering to the northeast by
midnight. a chance of showers by midnight. waves 2 feet or less.
$$
(10/13)
Latest Great Lakes Marine Forecast by KDTX
Issued 9/14/2026 3:50 AM America/New_York.
Valid through 9/14/2026 12:00 PM America/New_York.
fzus63 kdtx 140750
glflh
expires:202609141600;;425832
open lake forecast for lake huron
national weather service detroit/pontiac mi
350 am edt mon sep 14 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, 30.20 inches, settles in through the
day bringing relaxed flow and dry weather. low pressure, 29.40
inches, then tracks across northern ontario tuesday which
elevates wind gusts to gale force gusts across central and
northern lake huron. a gale warning is in effect there from late
tonight through tuesday afternoon.
lhz462>464-141600-
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-
350 am edt mon sep 14 2026
.today...northwest winds 10 to 15 knots becoming north 5 to
10 knots in the afternoon. waves 3 to 5 feet subsiding to 1 to
3 feet late in the afternoon.
.tonight...light and variable winds becoming southeast 5 to
10 knots late in the evening...then becoming south 10 to 15 knots
after midnight increasing to 15 to 20 knots with gusts to around
30 knots early in the morning. waves 1 to 3 feet building to 4 to
6 feet early in the morning. waves occasionally around 8 feet.
.tuesday...south winds 20 to 25 knots decreasing to 15 to
20 knots early in the afternoon. a chance of showers in the
morning. waves 6 to 9 feet. waves occasionally around 12 feet.
.tuesday night...southwest winds 10 to 15 knots decreasing to
5 to 10 knots by midnight...then becoming north 10 to 15 knots
after midnight. waves 3 to 5 feet subsiding to 1 to 3 feet in the
late evening and overnight.
.wednesday...north winds 10 to 15 knots becoming northeast 5 to
10 knots. showers likely late in the evening. waves 1 to 3 feet.
.thursday...northeast winds 5 to 10 knots. showers likely early
in the morning...then a chance of showers in the late morning and
early afternoon. waves 2 feet or less.
.friday...northeast winds 5 to 10 knots. a chance of showers by
midnight. waves 2 feet or less.
$$
(11/13)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/13/2026 9:22 PM US/Central.
Valid through 9/14/2026 4:30 AM US/Central.
fzus63 kmkx 140222
glflm
expires:202609140930;;413388
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
922 pm cdt sun sep 13 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...
north winds will gradually ease overnight into monday morning, as
high pressure around 30.3 inches moves across the lake.
winds will then increase and veer to south southeast monday
afternoon and night, becoming south into tuesday, as low pressure
around 29.3 inches moves from southern manitoba through northern
ontario. gales are expected monday night into tuesday morning. a
gale warning has been issued for lake michigan.
periods of showers and thunderstorms will accompany the
developing low from as early as monday evening into tuesday. winds
will trend north to northeast tuesday night into wednesday, as
high pressure around 30.3 inches moves into the region. north to
northeast winds may linger into the rest of the week, as the high
slowly moves to the east of the region.
lmz261-362-364-563-140930-
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-
922 pm cdt sun sep 13 2026
sturgeon bay wi to point betsie mi north...
...gale warning in effect from monday evening through early
tuesday afternoon...
.rest of tonight...northwest winds 15 to 25 kt becoming north
10 to 15 kt. waves 3 to 5 ft subsiding to 1 to 3 ft.
.monday...northwest winds 5 to 10 kt backing to southwest late in
the morning, then becoming south early in the afternoon becoming
10 to 20 kt late. waves 1 to 2 ft building to 1 to 3 ft.
.monday night...south winds to 30 kt increasing to gales to
40 kt. chance of showers in the evening, then showers overnight.
waves 4 to 6 ft occasionally to 8 ft building to 10 to 14 ft
occasionally to 18 ft.
.tuesday...southwest gales to 40 kt diminishing to 30 kt. chance
of showers in the morning. waves 10 to 14 ft occasionally to 18 ft
subsiding to 7 to 10 ft occasionally to 13 ft.
.tuesday night...northwest winds to 30 kt becoming north 10 to
20 kt overnight. waves 4 to 6 ft occasionally to 8 ft subsiding
to 2 to 4 ft.
.wednesday...northeast winds 5 to 10 kt increasing to 10 to
15 kt. waves 1 to 2 ft.
.wednesday night...northeast winds 10 to 15 kt becoming east 5 to
10 kt. waves 1 ft or less.
.thursday...northeast winds 10 to 15 kt becoming north. waves
1 to 2 ft.
.friday...east winds 10 to 15 kt becoming southeast. chance of
showers. waves 1 to 2 ft.
$$
(12/13)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/13/2026 9:22 PM US/Central.
Valid through 9/14/2026 4:30 AM US/Central.
fzus63 kmkx 140222
glflm
expires:202609140930;;413389
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
922 pm cdt sun sep 13 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...
north winds will gradually ease overnight into monday morning, as
high pressure around 30.3 inches moves across the lake.
winds will then increase and veer to south southeast monday
afternoon and night, becoming south into tuesday, as low pressure
around 29.3 inches moves from southern manitoba through northern
ontario. gales are expected monday night into tuesday morning. a
gale warning has been issued for lake michigan.
periods of showers and thunderstorms will accompany the
developing low from as early as monday evening into tuesday. winds
will trend north to northeast tuesday night into wednesday, as
high pressure around 30.3 inches moves into the region. north to
northeast winds may linger into the rest of the week, as the high
slowly moves to the east of the region.
lmz366-565-567-669-671-673-675-868-870-872-874-876-140930-
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 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-
922 pm cdt sun sep 13 2026
sturgeon bay wi to point betsie mi south to winthrop harbor il to
south haven mi...
...gale warning in effect from monday evening through early
tuesday morning...
.rest of tonight...northwest winds 10 to 20 kt becoming north
10 to 15 kt. waves 3 to 5 ft subsiding to 2 to 4 ft.
.monday...east winds 10 to 15 kt becoming southeast late in the
morning, then becoming south 10 to 20 kt early in the afternoon
increasing to 15 to 25 kt late. waves 2 to 4 ft building to 3 to
5 ft.
.monday night...south winds to 30 kt increasing to gales to
40 kt. chance of showers overnight. waves 4 to 7 ft occasionally
to 9 ft building to 10 to 14 ft occasionally to 18 ft.
.tuesday...southwest gales to 35 kt diminishing to 30 kt. showers
likely in the morning, then chance of showers in the afternoon.
waves 10 to 14 ft occasionally to 18 ft subsiding to 7 to 10 ft
occasionally to 13 ft.
.tuesday night...northwest winds 10 to 20 kt becoming north.
chance of showers in the evening. waves 4 to 6 ft occasionally to
8 ft subsiding to 2 to 4 ft.
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers. waves 3 to 5 ft.
.wednesday night...northeast winds 10 to 20 kt becoming east
10 to 15 kt. showers likely with a chance of thunderstorms. waves
1 to 3 ft.
.thursday...northeast winds 10 to 15 kt increasing to 10 to
20 kt. chance of showers. waves 2 to 4 ft.
.friday...east winds 10 to 20 kt becoming southeast. chance of
showers. waves 2 to 4 ft.
$$
(13/13)
Latest Great Lakes Marine Forecast by KMKX
Issued 9/13/2026 9:22 PM US/Central.
Valid through 9/14/2026 4:30 AM US/Central.
fzus63 kmkx 140222
glflm
expires:202609140930;;413390
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
922 pm cdt sun sep 13 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...
north winds will gradually ease overnight into monday morning, as
high pressure around 30.3 inches moves across the lake.
winds will then increase and veer to south southeast monday
afternoon and night, becoming south into tuesday, as low pressure
around 29.3 inches moves from southern manitoba through northern
ontario. gales are expected monday night into tuesday morning. a
gale warning has been issued for lake michigan.
periods of showers and thunderstorms will accompany the
developing low from as early as monday evening into tuesday. winds
will trend north to northeast tuesday night into wednesday, as
high pressure around 30.3 inches moves into the region. north to
northeast winds may linger into the rest of the week, as the high
slowly moves to the east of the region.
lmz080-777-779-878-140930-
lake michigan from michigan city in to st. joseph mi 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 st. joseph to south haven mi 5 nm offshore to
mid lake-
922 pm cdt sun sep 13 2026
winthrop harbor il to south haven mi south...
...gale warning in effect from monday evening through early
tuesday morning...
.rest of tonight...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 3 to 5 ft.
.monday...east winds 5 to 10 kt becoming southeast 10 to 15 kt
late in the morning, then increasing to 10 to 20 kt early in the
afternoon becoming southeast 10 to 20 kt late. waves 2 to 4 ft.
.monday night...southeast winds to 30 kt becoming south gales to
35 kt. chance of showers and thunderstorms overnight. waves 4 to
6 ft occasionally to 8 ft building to 7 to 10 ft occasionally to
13 ft.
.tuesday...southwest winds to 30 kt diminishing to 15 to 25 kt.
chance of showers in the morning, then showers likely in the
afternoon. waves 6 to 9 ft occasionally to 12 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.tuesday night...northwest winds 10 to 15 kt becoming north.
showers likely in the evening, then chance of showers overnight.
waves 1 to 3 ft.
.wednesday...northeast winds 10 to 15 kt. chance of showers.
waves 2 to 4 ft.
.wednesday night...northeast winds 10 to 15 kt. chance of
showers. waves 1 to 3 ft.
.thursday...northeast winds 10 to 15 kt becoming north. waves
1 to 3 ft.
.friday...east winds 10 to 20 kt diminishing to 10 to 15 kt.
chance of showers. waves 2 to 4 ft.
$$
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