fzus61 kbuf 210202
glflo 
expires:202609210900;;793420

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sun sep 20 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 30.4 inch high will ridge southeastward across the lake from 
ontario province tonight. this high will then remain ridged across 
the lakes while strengthening to 30.7 inches as it slowly drifts 
east into quebec through midweek, where it will remain through 
thursday. the high will then weaken to 30.3 inches while getting 
shoved back westward into ontario province on friday in response to 
a 29.3 inch low moving northward just off the mid-atlantic and 
jersey coastline.


loz062-210900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sun sep 20 2026

.overnight...northeast winds 15 to 25 knots. waves 1 to
3 feet building to 5 to 7 feet. waves occasionally around 9 feet.
.monday...northeast winds 15 to 25 knots. waves 3 to 6 feet. 
.monday night...northeast winds 15 to 25 knots. waves 3 to 6 feet
building to 5 to 7 feet. waves occasionally around 9 feet. 
.tuesday...northeast winds 20 to 25 knots becoming east. waves
5 to 8 feet. waves occasionally around 10 feet. 
.tuesday night...east winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.wednesday...east winds 15 to 25 knots. waves 3 to 6 feet. 
.thursday...east winds 10 to 15 knots becoming northeast. waves
2 to 4 feet. 
.friday...northeast winds 5 to 15 knots. waves 2 feet or less. 

$$

fzus61 kbuf 210202
glflo 
expires:202609210900;;793421

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sun sep 20 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 30.4 inch high will ridge southeastward across the lake from 
ontario province tonight. this high will then remain ridged across 
the lakes while strengthening to 30.7 inches as it slowly drifts 
east into quebec through midweek, where it will remain through 
thursday. the high will then weaken to 30.3 inches while getting 
shoved back westward into ontario province on friday in response to 
a 29.3 inch low moving northward just off the mid-atlantic and 
jersey coastline.


loz063>065-210900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sun sep 20 2026

.overnight...northeast winds 15 to 25 knots. waves 1 to
3 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.monday...northeast winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.monday night...northeast winds 15 to 25 knots. waves 2 to 4 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.tuesday...northeast winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.tuesday night...northeast winds 15 to 20 knots becoming east.
waves 3 to 5 feet. 
.wednesday...east winds 15 to 20 knots. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.thursday...east winds 10 to 15 knots becoming northeast. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 210750
glfle 
expires:202609211415;;807206

open lake forecast for lake erie
national weather service cleveland oh
350 am edt mon sep 21 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...
lake erie will reside be between high pressure 30.40 inches to 
the north and low pressure 29.90 inches over the ohio valley for
at least the first half of the week. high pressure 30.20 inches 
will expand south over lake erie thursday night into friday and
persist through the weekend. 


lez164>168-211415-
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-
350 am edt mon sep 21 2026

.today...east winds 20 to 25 knots becoming northeast. a slight
chance of showers. waves 5 to 9 feet. waves occasionally around
11 feet. 
.tonight...northeast winds to 30 knots becoming east. a slight
chance of showers through the early overnight. waves 6 to 9 feet.
waves occasionally around 11 feet. 
.tuesday...east winds to 30 knots. waves 6 to 9 feet. waves
occasionally around 11 feet. 
.tuesday night...east winds to 30 knots diminishing to 15 to
25 knots. a chance of showers overnight. waves 5 to 9 feet. waves
occasionally around 11 feet. 
.wednesday...east winds 15 to 25 knots. a chance of showers
during the day. 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...northeast winds 10 to 15 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 210750
glfle 
expires:202609211415;;807205

open lake forecast for lake erie
national weather service cleveland oh
350 am edt mon sep 21 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...
lake erie will reside be between high pressure 30.40 inches to 
the north and low pressure 29.90 inches over the ohio valley for
at least the first half of the week. high pressure 30.20 inches 
will expand south over lake erie thursday night into friday and
persist through the weekend. 


lez162-163-211415-
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-
350 am edt mon sep 21 2026

.today...northeast winds 20 to 25 knots. a chance of showers. 
waves 3 to 6 feet building to 5 to 8 feet. waves occasionally 
around 10 feet. 
.tonight...northeast winds 20 to 25 knots. a slight chance of
showers. a slight chance of waterspouts after midnight. 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
during the day. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.thursday...east winds 15 to 20 knots becoming northeast 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. 

$$

fzus61 kcle 210750
glfle 
expires:202609211415;;807207

open lake forecast for lake erie
national weather service cleveland oh
350 am edt mon sep 21 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...
lake erie will reside be between high pressure 30.40 inches to 
the north and low pressure 29.90 inches over the ohio valley for
at least the first half of the week. high pressure 30.20 inches 
will expand south over lake erie thursday night into friday and
persist through the weekend. 


lez061-169-211415-
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-
350 am edt mon sep 21 2026

.today...northeast winds 15 to 25 knots. waves 3 to 6 feet
building to 4 to 7 feet, then subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.tonight...northeast winds 20 to 25 knots becoming east. waves
4 to 7 feet. waves occasionally around 9 feet. 
.tuesday...east winds 15 to 25 knots becoming northeast. waves
4 to 7 feet. waves occasionally around 9 feet. 
.tuesday night...east winds 15 to 25 knots. a chance of showers
overnight. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.wednesday...east winds 15 to 20 knots. a chance of showers
during the day. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.friday...northeast winds 5 to 15 knots. waves 2 feet or less. 

$$

fzus63 kdtx 210704
glflh 
expires:202609211515;;805582

open lake forecast for lake huron
national weather service detroit/pontiac mi
304 am edt mon sep 21 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.


lhz361-362-211515-
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-
304 am edt mon sep 21 2026

.today...northeast winds 15 to 20 knots decreasing to 10 to
15 knots in the afternoon. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.tonight...northeast winds 10 to 15 knots increasing to 15 to
20 knots after midnight. waves 3 to 5 feet. 
.tuesday...east winds 15 to 20 knots decreasing to 10 to 15 knots
early in the afternoon. waves 3 to 5 feet. 
.tuesday night...northeast winds 10 to 15 knots becoming east
15 to 20 knots in the late evening and overnight. waves 3 to
5 feet. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots. waves 3 to 5 feet. 
.thursday...east winds 10 to 15 knots decreasing to 5 to 10 knots
. waves 1 to 3 feet. 
.friday...light and variable winds. waves 2 feet or less. 


$$

fzus63 kdtx 210704
glfsc 
expires:202609211515;;805586

lake st clair forecast
national weather service detroit/pontiac mi
304 am edt mon sep 21 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.


lcz460-211515-
lake st clair-
304 am edt mon sep 21 2026

...small craft advisory in effect through wednesday evening...

.today...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.
.tonight...northeast winds 20 to 25 knots. gusts to 30 knots by
midnight. mostly cloudy this evening becoming partly cloudy. waves 2
to 4 feet building to 3 to 5 feet in the late evening and overnight.
waves occasionally around 7 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 with gusts to 35 knot
gales. partly cloudy early in the evening becoming mostly cloudy.
waves 3 to 5 feet. waves occasionally around 7 feet.  a gale warning
may be needed.
.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 cloudy. waves 2 to 4 feet.
.thursday...east winds 20 to 25 knots. mostly clear. waves 1 to 3
feet.
.friday...north winds 10 to 15 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 210704
glflh 
expires:202609211515;;805583

open lake forecast for lake huron
national weather service detroit/pontiac mi
304 am edt mon sep 21 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>464-211515-
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-
304 am edt mon sep 21 2026

.today...northeast winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and afternoon. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.tonight...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. waves 4 to
6 feet. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots late in the morning...then becoming northeast 15 to
20 knots late in the afternoon becoming east 10 to 15 knots late
in the evening. waves 3 to 5 feet. waves occasionally around
8 feet. 
.thursday...east winds 10 to 15 knots becoming northeast 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 north . waves
2 feet or less. 


$$

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.  

$$

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.  

$$