fzus61 kbuf 182002
glflo 
expires:202608190300;;952938

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue aug 18 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 ridge of high pressure averaging 30.0 inches will 
drift to the eastern seaboard tonight. a cold front will then move 
east across lake ontario on wednesday. behind the front, a ridge of 
high pressure averaging 30.1 inches builds from the upper great 
lakes thursday to the lower great lakes friday. this high will drift 
east to the canadian maritimes saturday as a 29.7 inch low moves 
into northwest ontario province.


loz062-190300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt tue aug 18 2026

.tonight...south winds 5 to 10 knots becoming southwest 10 to
15 knots. a chance of showers after midnight. waves 2 feet or
less. 
.wednesday...west winds 5 to 15 knots. showers likely in the
morning, then a chance of showers early in the afternoon. waves
2 feet or less. 
.wednesday night...northwest winds 5 to 10 knots. waves 1 foot or
less. 
.thursday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.thursday night...northwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.friday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 
.saturday...south winds 5 to 10 knots becoming southwest. showers
likely with a chance of thunderstorms. waves 2 feet or less. 
.sunday...west winds 10 to 15 knots becoming northwest 15 to
20 knots. showers likely during the day, then a chance of showers
sunday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 182002
glflo 
expires:202608190300;;952939

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue aug 18 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 ridge of high pressure averaging 30.0 inches will 
drift to the eastern seaboard tonight. a cold front will then move 
east across lake ontario on wednesday. behind the front, a ridge of 
high pressure averaging 30.1 inches builds from the upper great 
lakes thursday to the lower great lakes friday. this high will drift 
east to the canadian maritimes saturday as a 29.7 inch low moves 
into northwest ontario province.


loz063>065-190300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt tue aug 18 2026

.tonight...southwest winds 10 to 15 knots. waves 2 feet or less. 
.wednesday...southwest winds 10 to 15 knots becoming west. a
chance of showers early, then showers likely. a chance of showers
late. waves 1 to 3 feet. 
.wednesday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 2 feet. 
.thursday...northwest winds 5 to 10 knots becoming west. waves
1 foot or less. 
.thursday night...west winds 10 knots or less becoming north.
waves 1 foot or less. 
.friday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 
.saturday...south winds 5 to 15 knots. a chance of showers and
thunderstorms during the day, then showers with a chance of
thunderstorms saturday night. waves 2 feet or less. 
.sunday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots. showers with a chance of thunderstorms. waves 1 to
3 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 181940
glfle 
expires:202608190215;;952362

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt tue aug 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 30.00 inches drifts to the east through wednesday
morning. a cold front will sweep across lake erie throughout the
day on wednesday with high pressure 30.10 inches building into the
region thursday through friday. low pressure 29.90 inches moves
into the great lake on saturday with a cold front passing through
late saturday into sunday.  


lez162>164-190215-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
340 pm edt tue aug 18 2026

.tonight...southwest winds 5 to 15 knots. a chance of showers
after midnight. waves 2 feet or less. 
.wednesday...west winds 5 to 15 knots becoming southwest. a
chance of showers in the morning, then a chance of showers with a
slight chance of thunderstorms in the afternoon. waves 2 feet or
less. 
.wednesday night...south winds 5 to 10 knots becoming northeast.
a chance of showers in the evening. waves 1 foot or less. 
.thursday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.thursday night...east winds 5 to 10 knots becoming south. waves
1 foot or less. 
.friday...south winds 10 knots or less. waves 1 foot or less. 
.saturday...southwest winds 10 to 15 knots becoming northwest.
showers likely with a chance of thunderstorms during the day,
then a chance of showers and thunderstorms saturday night. waves
2 feet or less. 
.sunday...northwest winds 10 to 15 knots becoming north. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 181940
glfle 
expires:202608190215;;952363

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt tue aug 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 30.00 inches drifts to the east through wednesday
morning. a cold front will sweep across lake erie throughout the
day on wednesday with high pressure 30.10 inches building into the
region thursday through friday. low pressure 29.90 inches moves
into the great lake on saturday with a cold front passing through
late saturday into sunday.  


lez165>167-190215-
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-
340 pm edt tue aug 18 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 181940
glfle 
expires:202608190215;;952364

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt tue aug 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 30.00 inches drifts to the east through wednesday
morning. a cold front will sweep across lake erie throughout the
day on wednesday with high pressure 30.10 inches building into the
region thursday through friday. low pressure 29.90 inches moves
into the great lake on saturday with a cold front passing through
late saturday into sunday.  


lez061-168-169-190215-
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-
340 pm edt tue aug 18 2026

.tonight...southwest winds 10 to 15 knots. a slight chance of
showers late. waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...southwest winds 10 to 15 knots becoming west.
showers likely in the morning, then a chance of showers with a
slight chance of thunderstorms in the afternoon. waves 2 to
4 feet. 
.wednesday night...west winds 5 to 10 knots becoming northeast.
waves 1 to 2 feet. 
.thursday...northeast winds 10 knots or less. waves 1 foot or
less. 
.thursday night...northeast winds less than 10 knots becoming
southeast. waves 1 foot or less. 
.friday...southeast winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 5 to 15 knots becoming west. showers with
a chance of thunderstorms. waves 2 feet or less. 
.sunday...west winds 10 to 15 knots becoming northwest. showers
likely during the day, then a chance of showers sunday night.
waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 181935
glfsc 
expires:202608190345;;952173

lake st clair forecast
national weather service detroit/pontiac mi
335 pm edt tue aug 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...a cold front will then push across the region from
north to south this evening. this will bring showers and
thunderstorms and will veer winds from southwest to northwest in
the wake of the front. high pressure, 30.00 inches, will fill in
behind the front through the midweek period.


lcz460-190345-
lake st clair-
335 pm edt tue aug 18 2026

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

$$

fzus63 kdtx 181934
glflh 
expires:202608190345;;952169

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 pm edt tue aug 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...a cold front will then push across the region from
north to south this evening. this will bring showers and
thunderstorms and will veer winds from southwest to northwest in
the wake of the front. high pressure, 30.00 inches, will fill in
behind the front through the midweek period.


lhz462>464-190345-
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-
334 pm edt tue aug 18 2026

.tonight...south winds 10 to 15 knots becoming southwest 5 to
10 knots by midnight...then veering to the west early in the
morning. a chance of showers and thunderstorms. waves 1 to
3 feet. 
.wednesday...north winds 5 to 10 knots. a chance of showers in
the morning. waves 1 to 3 feet. 
.wednesday night...light and variable winds becoming north 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.thursday...north winds 5 to 10 knots. waves 2 feet or less. 
.thursday night...northeast winds 5 to 10 knots veering to the
southeast in the late evening and overnight. waves 2 feet or
less. 
.friday...south winds 5 to 10 knots becoming southeast 10 to
15 knots late in the afternoon. a chance of showers late in the
evening. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and early afternoon...then veering
to the west early in the evening becoming northwest 10 to
15 knots by midnight. a chance of showers early in the morning. a
chance of thunderstorms. rain showers likely . waves 1 to 3 feet
building to 2 to 4 feet by midnight. 
.sunday...northwest winds 15 to 20 knots becoming north 10 to
15 knots by midnight. a chance of showers until afternoon. waves
3 to 5 feet. 


$$

fzus63 kdtx 181934
glflh 
expires:202608190345;;952168

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 pm edt tue aug 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...a cold front will then push across the region from
north to south this evening. this will bring showers and
thunderstorms and will veer winds from southwest to northwest in
the wake of the front. high pressure, 30.00 inches, will fill in
behind the front through the midweek period.


lhz362-363-190345-
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-
334 pm edt tue aug 18 2026

.tonight...south winds 5 to 10 knots veering to the northwest
after midnight. showers likely and a chance of thunderstorms in
the evening...then a chance of showers after midnight. waves 1 to
3 feet. 
.wednesday...north winds 5 to 10 knots backing to the west in the
late morning and early afternoon...then veering to the west 5 to
10 knots late in the afternoon. waves 1 to 3 feet. 
.wednesday night...north winds 5 to 10 knots backing to the
northwest after midnight. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots early in the morning
becoming light and variable...then becoming east 5 to 10 knots
early in the afternoon. waves 2 feet or less. 
.thursday night...southeast winds 5 to 10 knots. waves 2 feet or
less. 
.friday...south winds 5 to 10 knots increasing to 10 to 15 knots.
a chance of showers late in the afternoon. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and early afternoon...then becoming
northwest 10 to 15 knots early in the evening increasing to 15 to
20 knots by midnight. showers likely early in the morning. a
chance of thunderstorms until early evening. a chance of showers
. waves 2 to 4 feet. 
.sunday...northwest winds 15 to 20 knots. gusts to 30 knots . a
chance of showers early in the morning. waves 3 to 5 feet. 


$$

fzus63 kdtx 181934
glflh 
expires:202608190345;;952167

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 pm edt tue aug 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...a cold front will then push across the region from
north to south this evening. this will bring showers and
thunderstorms and will veer winds from southwest to northwest in
the wake of the front. high pressure, 30.00 inches, will fill in
behind the front through the midweek period.


lhz361-190345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
334 pm edt tue aug 18 2026

.tonight...west winds 10 to 15 knots becoming northwest 5 to
10 knots after midnight. a chance of showers in the evening.
waves 1 to 3 feet. 
.wednesday...west winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. waves 1 to 3 feet. 
.wednesday night...northwest winds 10 to 15 knots decreasing to
5 to 10 knots in the late evening and overnight. waves 2 feet or
less. 
.thursday...light and variable winds. waves 2 feet or less. 
.thursday night...northeast winds 5 to 10 knots veering to the
south in the late evening and overnight. waves 2 feet or less. 
.friday...south winds 5 to 10 knots. a chance of showers. rain
showers likely late in the afternoon. waves 1 to 3 feet. 
.saturday...southwest winds 5 to 10 knots becoming northwest
10 to 15 knots in the late morning and early afternoon...then
increasing to 15 to 20 knots . a chance of showers. waves 1 to
3 feet building to 2 to 4 feet . 
.sunday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. waves 2 to 4 feet. 


$$