fzus61 kbuf 111402
glflo 
expires:202609112100;;273939

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt fri sep 11 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 30.0 inches over the 
lower great lakes region this afternoon, will slide east into new 
england tonight, before exiting toward the new england coast on 
saturday. a warm front will sweep northeastward across lake ontario 
saturday evening through saturday night before a cold front sweeps 
eastward across the lake on sunday. behind the cold front, a 30.2 
inch ridge will slide eastward across the lake through monday. on 
tuesday, the ridge should exit toward new england and allow a warm 
front to sweep northeastward across lake ontario.


loz063>065-112100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt fri sep 11 2026

.this afternoon...north winds 10 knots or less becoming west.
waves 1 foot or less. 
.tonight...west winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 10 to 15 knots becoming southeast. waves
1 to 3 feet. 
.saturday night...south winds 15 to 20 knots becoming southwest.
a chance of showers. waves 1 to 3 feet building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots. a chance of showers during the day. waves 1 to 3 feet
building to 2 to 4 feet. 
.monday...north winds 5 to 15 knots becoming southeast 15 to
20 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest. a
chance of showers during the day, then showers likely tuesday
night. waves 3 to 5 feet subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 111402
glflo 
expires:202609112100;;273938

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt fri sep 11 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 30.0 inches over the 
lower great lakes region this afternoon, will slide east into new 
england tonight, before exiting toward the new england coast on 
saturday. a warm front will sweep northeastward across lake ontario 
saturday evening through saturday night before a cold front sweeps 
eastward across the lake on sunday. behind the cold front, a 30.2 
inch ridge will slide eastward across the lake through monday. on 
tuesday, the ridge should exit toward new england and allow a warm 
front to sweep northeastward across lake ontario.


loz062-112100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt fri sep 11 2026

.this afternoon...northwest winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.tonight...south winds 5 to 10 knots becoming southeast. waves
1 foot or less. 
.saturday...southeast winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday night...southeast winds 5 to 10 knots becoming
southwest. waves 2 feet or less. 
.sunday...west winds 10 to 15 knots becoming northwest 15 to
20 knots. waves 1 to 3 feet. 
.monday...north winds 5 to 15 knots becoming southeast. waves
1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming west and
diminishing to around 10 knots. a chance of showers during the
day, then showers likely tuesday night. waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kdtx 111941
glflh 
expires:202609120345;;287736

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm edt fri sep 11 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, 30.00 inches, will slowly move eastward
towards the east coast into saturday. low pressure, 29.30 inches,
lifting over northern ontario then drags a cold front across the
central great lakes late saturday-sunday.


lhz361>363-120345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
341 pm edt fri sep 11 2026

.tonight...south winds 10 to 15 knots. waves 2 to 4 feet. 
.saturday...south winds 10 to 15 knots. a chance of showers in
the afternoon. waves 2 to 4 feet. 
.saturday night...south winds 10 to 15 knots veering to the
northwest after midnight. a chance of showers in the evening.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.sunday...west winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. a chance of showers in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet early in the
afternoon. 
.sunday night...northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 10 to 15 knots after midnight.
waves 3 to 5 feet. 
.monday...northwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the afternoon becoming south 20 to 25 knots with gusts to
35 knot gales. a chance of showers late in the evening. waves
1 to 3 feet building to 8 to 12 feet. waves occasionally around
15 feet. 
.tuesday...south winds to 30 knots with gusts to 40 knot gales
decreasing to 20 to 25 knots with gusts to 40 knot gales in the
late morning and early afternoon...then becoming west 10 to
15 knots with gusts to around 30 knots . showers likely early in
the morning...then a chance of showers . waves 8 to 12 feet
subsiding to 4 to 6 feet . waves occasionally around 15 feet. 
.wednesday...north winds 5 to 10 knots. a chance of showers early
in the morning. waves 1 to 3 feet. 


$$

fzus63 kdtx 111941
glflh 
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open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm edt fri sep 11 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, 30.00 inches, will slowly move eastward
towards the east coast into saturday. low pressure, 29.30 inches,
lifting over northern ontario then drags a cold front across the
central great lakes late saturday-sunday.


lhz462>464-120345-
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-
341 pm edt fri sep 11 2026

.tonight...east winds 5 to 10 knots veering to the southeast late
in the evening...then increasing to 10 to 15 knots after
midnight. waves 2 feet or less. 
.saturday...south winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday night...south winds 5 to 10 knots becoming southwest
10 to 15 knots by midnight...then veering to the west after
midnight. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots backing to the west early in
the afternoon. a chance of showers in the afternoon. waves 1 to
3 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of
showers in the evening. waves 1 to 3 feet building to 3 to 5 feet
in the late evening and overnight. 
.monday...northwest winds 10 to 15 knots becoming northeast 5 to
10 knots late in the morning...then becoming south 15 to 20 knots
with gusts to around 30 knots late in the evening. a chance of
showers late in the evening. waves 2 to 4 feet subsiding to 1 to
3 feet late in the morning...then building to 6 to 9 feet late in
the evening. waves occasionally around 12 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 10 to 15 knots with gusts to around
30 knots . a chance of showers. rain showers likely by midnight.
waves 6 to 9 feet subsiding to 2 to 4 feet . waves occasionally
around 12 feet. 
.wednesday...northwest winds 5 to 10 knots veering to the north.
a chance of showers until afternoon. a chance of showers by
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 


$$

fzus63 kdtx 111941
glfsc 
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lake st clair forecast
national weather service detroit/pontiac mi
341 pm edt fri sep 11 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, 30.00 inches, will slowly move eastward
towards the east coast into saturday. low pressure, 29.30 inches,
lifting over northern ontario then drags a cold front across the
central great lakes late saturday-sunday.


lcz460-120345-
lake st clair-
341 pm edt fri sep 11 2026

.tonight...southeast winds 5 to 10 knots increasing to 10 to 15
knots by midnight...then diminishing to 5 to 10 knots early in the
morning. clear. waves 2 feet or less.
.saturday...south winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon...then diminishing to 5 to 10 knots late in
the afternoon. partly sunny. waves 2 feet or less.
.saturday night...southwest winds 5 to 10 knots veering to the west
after midnight. mostly clear. waves 2 feet or less.
.sunday...northwest winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. mostly sunny. waves 2 feet or less.
.sunday night...north winds 15 to 20 knots. partly cloudy. waves 1
to 3 feet.
.monday...north winds 10 to 15 knots becoming northeast 5 to 10
knots in the afternoon...then becoming southeast 10 to 15 knots in
the evening. sunny becoming mostly sunny in the afternoon becoming
partly cloudy. waves 2 feet or less.
.tuesday...southwest winds 15 to 20 knots. partly cloudy. showers
likely and a chance of thunderstorms. waves 1 to 3 feet.
.wednesday...northeast winds 5 to 10 knots. mostly cloudy with
showers likely and a chance of thunderstorms. waves 2 feet or less.

$$

fzus63 kmkx 111850
glflm 
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open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
150 pm cdt fri sep 11 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

30.0 inch high pressure is shifting into southern ontario this 
afternoon, allowing winds to shift generally southerly across the 
open waters of lake michigan. southerly winds will continue to 
increase into tonight as 29.4 inch low pressure moves from the 
northern great plains toward the us-canadian border. winds will 
shift out of the west-northwest during the day saturday as a cold 
front moves across the lake. expecting wind gusts to remain 
primarily in the 25-30 knot range from this evening through 
saturday, though occasional gusts approaching gale thresholds 
can't be completely ruled out. currently anticipating any such 
gusts to remain brief and isolated enough to preclude the need for
gale warnings, but will continue to monitor trends. isolated 
showers and thunderstorms are possible ahead of the approaching 
cold front, with severe weather hazards not expected.

30.2 inch high pressure will build in from the northern great 
plains sunday night into monday, bringing decreasing winds 
saturday night through sunday & light/variable winds sunday night 
into monday. the high will move east of the waters monday 
afternoon & evening, resulting in a south-southeast wind shift. 
winds will increase further & veer south-southwesterly monday 
night into tuesday as 29.4 inch low pressure develops over 
manitoba. gales continue to appear likely during this time frame, 
with headlines becoming necessary in later forecasts if trends 
continue to hold. periods of showers and thunderstorms will 
accompany the developing low from as early as monday evening 
through at least tuesday afternoon. widespread severe weather 
hazards appear low over lake michigan at this time, though an 
isolated stronger storm with gusty winds can't be entirely ruled 
out. winds will trend northerly behind a cold front tuesday night 
into wednesday, steadily tapering away from gale thresholds in the
process. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-120315-
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-
150 pm cdt fri sep 11 2026

sheboygan wi to pentwater mi south...

.tonight...southeast winds 15 to 25 kt becoming south. waves 3 to
5 ft. 
.saturday...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt veering to north. waves
3 to 5 ft. 
.sunday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast. waves
2 to 4 ft. 
.monday...east winds to 30 kt becoming southeast gales to 35 kt 
in the afternoon. waves 4 to 7 ft occasionally to 9 ft building to
7 to 10 ft occasionally to 13 ft. 
.monday night...southeast gales to 35 kt becoming south. chance 
of showers. waves 10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest gales to 35 kt becoming west to 30 kt.
showers likely. waves 10 to 14 ft occasionally to 18 ft subsiding
to 5 to 8 ft occasionally to 10 ft. 
.wednesday...northeast winds 10 to 20 kt. chance of showers.
waves 2 to 4 ft.  

$$

fzus63 kmkx 111850
glflm 
expires:202609120315;;286063

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
150 pm cdt fri sep 11 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

30.0 inch high pressure is shifting into southern ontario this 
afternoon, allowing winds to shift generally southerly across the 
open waters of lake michigan. southerly winds will continue to 
increase into tonight as 29.4 inch low pressure moves from the 
northern great plains toward the us-canadian border. winds will 
shift out of the west-northwest during the day saturday as a cold 
front moves across the lake. expecting wind gusts to remain 
primarily in the 25-30 knot range from this evening through 
saturday, though occasional gusts approaching gale thresholds 
can't be completely ruled out. currently anticipating any such 
gusts to remain brief and isolated enough to preclude the need for
gale warnings, but will continue to monitor trends. isolated 
showers and thunderstorms are possible ahead of the approaching 
cold front, with severe weather hazards not expected.

30.2 inch high pressure will build in from the northern great 
plains sunday night into monday, bringing decreasing winds 
saturday night through sunday & light/variable winds sunday night 
into monday. the high will move east of the waters monday 
afternoon & evening, resulting in a south-southeast wind shift. 
winds will increase further & veer south-southwesterly monday 
night into tuesday as 29.4 inch low pressure develops over 
manitoba. gales continue to appear likely during this time frame, 
with headlines becoming necessary in later forecasts if trends 
continue to hold. periods of showers and thunderstorms will 
accompany the developing low from as early as monday evening 
through at least tuesday afternoon. widespread severe weather 
hazards appear low over lake michigan at this time, though an 
isolated stronger storm with gusty winds can't be entirely ruled 
out. winds will trend northerly behind a cold front tuesday night 
into wednesday, steadily tapering away from gale thresholds in the
process. 


lmz261-362-364-366-563-565-567-868-120315-
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-
150 pm cdt fri sep 11 2026

sheboygan wi to pentwater mi north...

.tonight...south winds to 30 kt diminishing to 15 to 25 kt. waves
4 to 7 ft occasionally to 9 ft. 
.saturday...south winds to 30 kt becoming southwest. slight
chance of showers in the morning, then chance of showers and
slight chance of thunderstorms in the afternoon. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.saturday night...west winds 10 to 20 kt becoming northwest.
waves 2 to 4 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 1 to 3 ft. 
.monday...east winds 15 to 25 kt becoming southeast gales to
35 kt in the afternoon. waves 4 to 6 ft occasionally to 8 ft
building to 6 to 9 ft occasionally to 12 ft. 
.monday night...south gales to 35 kt. showers. waves 10 to 14 ft 
occasionally to 18 ft. 
.tuesday...southwest gales to 35 kt becoming west gales to 35 kt.
chance of showers. waves 10 to 14 ft occasionally to 18 ft 
subsiding to 5 to 8 ft occasionally to 10 ft. 
.wednesday...northeast winds 10 to 20 kt. waves 1 to 3 ft.  

$$