fzus61 kbuf 180802
glflo 
expires:202608181500;;926056

open lake forecast for lake ontario
national weather service buffalo ny
402 am 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 
build from the central great lakes today. the ridge exits eastward 
tonight before a cold front sweeps eastward across lake ontario on 
wednesday. behind the front, a ridge averaging 30.1 inches builds 
from the western great lakes and vicinity through friday. this ridge 
should exit eastward friday night through saturday and allow a warm 
front to drift northward across lake ontario.


loz062-181500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt tue aug 18 2026

.today...north winds 10 knots or less becoming southwest. waves
1 foot or less. 
.tonight...southwest winds 10 to 15 knots. a chance of showers
after midnight. showers likely late. waves 1 to 3 feet. 
.wednesday...southwest winds 5 to 10 knots becoming west. a
chance of showers. waves 1 to 2 feet. 
.wednesday night...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.thursday...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. a
chance of showers during the day, then showers likely saturday
night. waves 2 feet or less. 

$$

fzus61 kbuf 180802
glflo 
expires:202608181500;;926057

open lake forecast for lake ontario
national weather service buffalo ny
402 am 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 
build from the central great lakes today. the ridge exits eastward 
tonight before a cold front sweeps eastward across lake ontario on 
wednesday. behind the front, a ridge averaging 30.1 inches builds 
from the western great lakes and vicinity through friday. this ridge 
should exit eastward friday night through saturday and allow a warm 
front to drift northward across lake ontario.


loz063>065-181500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt tue aug 18 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180735
glfle 
expires:202608181415;;925318

open lake forecast for lake erie
national weather service cleveland oh
335 am 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 will move south of lake erie today. a 
cold front will move south across the lake on wednesday. high 
pressure 30.20 inches will build over the lake on thursday and 
friday. low pressure 30.10 inches will enter the central great 
lakes region on saturday with a cold front approaching lake erie 
from the west.


lez165>167-181415-
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-
335 am edt tue aug 18 2026

.today...north winds 10 knots or less becoming west. waves 1 foot
or less. 
.tonight...southwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of showers with a slight chance of
thunderstorms after midnight. waves 1 to 3 feet building to 2 to
4 feet. 
.wednesday...west winds 5 to 15 knots. a chance of showers. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday night...north winds 5 to 10 knots becoming east. a
chance of showers in the evening. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots. waves 1 foot or less. 
.friday...east winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...southwest winds 10 to 15 knots becoming west. a
chance of showers during the day, then showers likely with a
chance of thunderstorms saturday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180735
glfle 
expires:202608181415;;925319

open lake forecast for lake erie
national weather service cleveland oh
335 am 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 will move south of lake erie today. a 
cold front will move south across the lake on wednesday. high 
pressure 30.20 inches will build over the lake on thursday and 
friday. low pressure 30.10 inches will enter the central great 
lakes region on saturday with a cold front approaching lake erie 
from the west.


lez061-168-169-181415-
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-
335 am edt tue aug 18 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180735
glfle 
expires:202608181415;;925317

open lake forecast for lake erie
national weather service cleveland oh
335 am 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 will move south of lake erie today. a 
cold front will move south across the lake on wednesday. high 
pressure 30.20 inches will build over the lake on thursday and 
friday. low pressure 30.10 inches will enter the central great 
lakes region on saturday with a cold front approaching lake erie 
from the west.


lez162>164-181415-
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-
335 am edt tue aug 18 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 180733
glflh 
expires:202608181545;;925232

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am 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...diffuse area of high pressure, 30.00 inches, will wash
out across the eastern great lakes this morning. a cold front
will then push across the region from north to south this
afternoon and evening. this will bring showers and thunderstorms
and will veer winds from southwest to northwest in the wake of
the front.


lhz361-181545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
333 am edt tue aug 18 2026

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


$$

fzus63 kdtx 180733
glfsc 
expires:202608181545;;925236

lake st clair forecast
national weather service detroit/pontiac mi
333 am 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...diffuse area of high pressure, 30.00 inches, will wash
out across the eastern great lakes this morning. a cold front
will then push across the region from north to south this
afternoon and evening. this will bring showers and thunderstorms
and will veer winds from southwest to northwest in the wake of
the front.


lcz460-181545-
lake st clair-
333 am edt tue aug 18 2026

.today...west winds 5 to 10 knots backing to the south early in the
afternoon...then increasing to 10 to 15 knots late in the afternoon.
mostly sunny. waves 2 feet or less.
.tonight...southwest winds 10 to 15 knots veering to the west early
in the morning. partly cloudy becoming mostly cloudy by midnight
becoming partly cloudy. a chance of light showers after midnight.
waves 2 feet or less.
.wednesday...northwest winds 10 to 15 knots becoming north 5 to 10
knots in the late morning and afternoon. mostly sunny. a chance of
light showers in the late morning and early afternoon. 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 clear. waves 2 feet or
less.
.friday...south winds 10 to 15 knots. mostly clear. waves 2 feet or
less.
.saturday...west winds 5 to 10 knots. partly cloudy. a chance of
showers and thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 180733
glflh 
expires:202608181545;;925233

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am 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...diffuse area of high pressure, 30.00 inches, will wash
out across the eastern great lakes this morning. a cold front
will then push across the region from north to south this
afternoon and evening. this will bring showers and thunderstorms
and will veer winds from southwest to northwest in the wake of
the front.


lhz362-363-181545-
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 tue aug 18 2026

.today...southwest winds 5 to 10 knots becoming south 10 to
15 knots in the late morning and afternoon. a chance of showers
and thunderstorms in the afternoon. waves 1 to 3 feet. 
.tonight...south winds 5 to 10 knots becoming northwest 10 to
15 knots after midnight. a chance of showers and thunderstorms in
the evening...then a chance of showers after midnight. waves 1 to
3 feet. 
.wednesday...northwest winds 5 to 10 knots. 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...northwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the afternoon. waves 2 feet or less. 
.friday...south winds 5 to 10 knots increasing to 10 to 15 knots.
a chance of showers. waves 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots veering to the
northwest by midnight. a chance of showers. a chance of
thunderstorms until early evening. waves 2 to 4 feet. 


$$

fzus63 kdtx 180733
glflh 
expires:202608181545;;925234

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am 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...diffuse area of high pressure, 30.00 inches, will wash
out across the eastern great lakes this morning. a cold front
will then push across the region from north to south this
afternoon and evening. this will bring showers and thunderstorms
and will veer winds from southwest to northwest in the wake of
the front.


lhz462>464-181545-
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 tue aug 18 2026

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


$$