fzus61 kbuf 200802
glflo 
expires:202608201500;;037966

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu aug 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 30.1 inch high over the upper great lakes will build 
southeast across southern ontario and quebec today and tonight, 
before sliding across new england friday, then into the canadian 
maritimes saturday. an elongated 29.7 inch low will slowly make its 
way from the central great lakes to western quebec saturday and 
sunday, then will wobble about western quebec through at least 
monday.


loz062-201500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt thu aug 20 2026

.today...north winds 10 knots or less becoming south. waves
1 foot or less. 
.tonight...west winds less than 10 knots becoming north. waves
1 foot or less. 
.friday...northeast winds 10 knots or less becoming east 10 to
15 knots. waves 2 feet or less. 
.friday night...east winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.saturday...southeast winds 5 to 10 knots becoming southwest.
showers with a chance of thunderstorms. waves 1 to 2 feet. 
.sunday...west winds 10 to 15 knots. a chance of showers. waves
1 to 3 feet building to 2 to 4 feet. 
.monday...west winds 10 to 15 knots. a chance of showers during
the day. waves 2 to 4 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 200802
glflo 
expires:202608201500;;037967

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu aug 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 30.1 inch high over the upper great lakes will build 
southeast across southern ontario and quebec today and tonight, 
before sliding across new england friday, then into the canadian 
maritimes saturday. an elongated 29.7 inch low will slowly make its 
way from the central great lakes to western quebec saturday and 
sunday, then will wobble about western quebec through at least 
monday.


loz063>065-201500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt thu aug 20 2026

.today...northwest winds 10 knots or less becoming west. waves
2 feet or less. 
.tonight...west winds 10 knots or less becoming northeast. waves
1 foot or less. 
.friday...east winds 10 knots or less becoming northeast. waves
1 foot or less. 
.friday night...northeast winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 
.saturday...southeast winds 5 to 15 knots becoming south. showers
with a chance of thunderstorms. waves 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of showers during the day, then showers likely
sunday night. waves 1 to 3 feet building to 2 to 4 feet. 
.monday...west winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely during the day, then a chance of showers
monday night. waves 2 to 4 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 200737
glfle 
expires:202608201415;;037172

open lake forecast for lake erie
national weather service cleveland oh
337 am edt thu aug 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...
high pressure 30.10 inches builds into the region through friday.
low pressure 29.90 inches moves into the great lakes region on 
saturday with a cold front crossing late saturday night into 
sunday.


lez165>167-201415-
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-
337 am edt thu aug 20 2026

.today...east winds 10 to 15 knots becoming northeast. a chance
of showers with a slight chance of thunderstorms early, then a
slight chance of showers late this morning. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots becoming east. waves
1 to 3 feet subsiding to 1 foot or less. 
.friday...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.friday night...northeast winds 5 to 10 knots becoming south.
waves 1 foot or less. 
.saturday...southwest winds 10 to 15 knots becoming northwest.
showers likely during the day, then showers with a chance of
thunderstorms saturday night. waves 1 to 2 feet. 
.sunday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers sunday night. waves 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming southwest. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 200737
glfle 
expires:202608201415;;037173

open lake forecast for lake erie
national weather service cleveland oh
337 am edt thu aug 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...
high pressure 30.10 inches builds into the region through friday.
low pressure 29.90 inches moves into the great lakes region on 
saturday with a cold front crossing late saturday night into 
sunday.


lez061-168-169-201415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
337 am edt thu aug 20 2026

.today...east winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.tonight...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.friday...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.friday night...northeast winds 5 to 10 knots becoming south.
waves 1 foot or less. 
.saturday...south winds 5 to 15 knots becoming west. a chance of
showers and thunderstorms during the day, then showers with a
chance of thunderstorms saturday night. waves 2 feet or less. 
.sunday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of showers. waves 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming west. waves 1 to
2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 200737
glfle 
expires:202608201415;;037171

open lake forecast for lake erie
national weather service cleveland oh
337 am edt thu aug 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...
high pressure 30.10 inches builds into the region through friday.
low pressure 29.90 inches moves into the great lakes region on 
saturday with a cold front crossing late saturday night into 
sunday.


lez162>164-201415-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
337 am edt thu aug 20 2026

.today...northeast winds 5 to 15 knots. a chance of showers with
a slight chance of thunderstorms this morning. a slight chance of
showers late. waves 1 to 3 feet. 
.tonight...east winds 5 to 15 knots. waves 1 to 3 feet subsiding
to 1 foot or less. 
.friday...east winds 10 knots or less. waves 1 foot or less. 
.friday night...east winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.saturday...southwest winds 5 to 15 knots becoming northwest.
showers with a chance of thunderstorms during the day, then a
chance of showers saturday night. waves 2 feet or less. 
.sunday...northwest winds 10 to 15 knots. waves 1 to 2 feet. 
.monday...northwest winds 5 to 10 knots becoming west. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 200733
glflh 
expires:202608201545;;037003

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt thu aug 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, 30.00 inches, builds into the great
lakes through the end of the work week maintaining light winds. a
cold front then sweeps across the area friday into saturday,
bringing the next opportunity for showers and thunderstorms.


lhz361>363-201545-
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-
333 am edt thu aug 20 2026

.today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds becoming east 5 to 10 knots
by midnight...then veering to the southeast early in the morning.
waves 2 feet or less. 
.friday...south winds 5 to 10 knots becoming southeast 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet
building to 3 to 5 feet early in the afternoon. 
.friday night...southeast winds 10 to 15 knots. waves 2 to
4 feet. 
.saturday...southwest winds 5 to 10 knots becoming northwest
10 to 15 knots late in the afternoon...then increasing to 15 to
20 knots late in the evening. showers...then a chance of showers
late in the afternoon. waves 1 to 3 feet building to 4 to 6 feet
late in the afternoon. waves occasionally around 8 feet. 
.sunday...northwest winds 15 to 20 knots increasing to 20 to
25 knots early in the evening...then decreasing to 15 to 20 knots
by midnight. gusts to 30 knots. a chance of showers early in the 
morning. waves 6 to 9 feet. waves occasionally around 12 feet.

.monday...northwest winds 10 to 15 knots becoming west 5 to
10 knots by midnight. waves 3 to 5 feet. 


$$

fzus63 kdtx 200733
glfsc 
expires:202608201545;;036944

lake st clair forecast
national weather service detroit/pontiac mi
333 am edt thu aug 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, 30.00 inches, builds into the great
lakes through the end of the work week maintaining light winds. a
cold front then sweeps across the area friday into saturday,
bringing the next opportunity for showers and thunderstorms.


lcz460-201545-
lake st clair-
333 am edt thu aug 20 2026

.today...northeast winds 10 to 15 knots diminishing to 5 to 10 knots
in the afternoon. cloudy early in the morning becoming mostly sunny.
waves 2 feet or less.
.tonight...northeast winds 10 to 15 knots becoming east 5 to 10
knots after midnight. clear. waves 2 feet or less.
.friday...southeast winds 5 to 10 knots. mostly sunny. waves 2 feet
or less.
.friday night...southeast winds 5 to 10 knots. mostly clear. waves 2
feet or less.
.saturday...southwest winds 5 to 10 knots becoming northwest 10 to
15 knots in the evening. mostly sunny with a chance of light showers
in the morning...then light showers and a chance of thunderstorms in
the afternoon and evening. waves 2 feet or less.
.sunday...north winds 10 to 20 knots. mostly clear. waves 2 feet 
or less.
.monday...northeast winds 10 to 15 knots. clear. waves 2 feet or
less.

$$

fzus63 kdtx 200733
glflh 
expires:202608201545;;037004

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt thu aug 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, 30.00 inches, builds into the great
lakes through the end of the work week maintaining light winds. a
cold front then sweeps across the area friday into saturday,
bringing the next opportunity for showers and thunderstorms.


lhz462>464-201545-
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-
333 am edt thu aug 20 2026

.today...light and variable winds becoming north 5 to 10 knots.
waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots veering to the east
early in the morning. waves 2 feet or less. 
.friday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.friday night...east winds 5 to 10 knots becoming southeast 10 to
15 knots in the late evening and overnight. waves 1 to 3 feet. 
.saturday...south winds 5 to 10 knots veering to the northwest
late in the afternoon...then increasing to 15 to 20 knots late in
the evening. a chance of showers in the morning...then showers
and a chance of thunderstorms late in the morning. a chance of
showers late in the evening. waves 1 to 3 feet building to 4 to
6 feet late in the evening. waves occasionally around 8 feet. 
.sunday...northwest winds 15 to 20 knots. gusts to 30 knots until
early evening. a chance of showers. a chance of thunderstorms
early in the evening. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.monday...northwest winds 10 to 15 knots becoming north 5 to
10 knots . waves 3 to 5 feet subsiding to 1 to 3 feet by
midnight. 


$$