fzus61 kbuf 202002
glflo 
expires:202608210300;;067417

open lake forecast for lake ontario
national weather service buffalo ny
402 pm 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 ridge averaging 30.1 inches affects lake ontario through saturday 
as the embedded high pressure center moves from the upper great 
lakes toward the canadian maritimes. a warm front should sweep 
northward across lake ontario saturday night and a cold front should 
sweep eastward across the lake late saturday night through sunday as 
a low of 29.7 inches moves from the upper great lakes toward 
southern quebec. behind the low, a weak trough averaging 29.9 inches 
should linger over lake ontario through monday before a ridge 
averaging 30.0 inches builds from near the ohio valley on tuesday.


loz062-210300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt thu aug 20 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 202002
glflo 
expires:202608210300;;067418

open lake forecast for lake ontario
national weather service buffalo ny
402 pm 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 ridge averaging 30.1 inches affects lake ontario through saturday 
as the embedded high pressure center moves from the upper great 
lakes toward the canadian maritimes. a warm front should sweep 
northward across lake ontario saturday night and a cold front should 
sweep eastward across the lake late saturday night through sunday as 
a low of 29.7 inches moves from the upper great lakes toward 
southern quebec. behind the low, a weak trough averaging 29.9 inches 
should linger over lake ontario through monday before a ridge 
averaging 30.0 inches builds from near the ohio valley on tuesday.


loz063>065-210300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt thu aug 20 2026

.tonight...northwest winds 5 to 15 knots becoming east. waves
2 feet 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 1 foot or less. 
.saturday...southeast winds 5 to 15 knots. a chance of showers
and thunderstorms in the afternoon. waves 2 feet or less. 
.saturday night...southeast winds 5 to 15 knots becoming south
15 to 20 knots. showers likely with a chance of thunderstorms in
the evening, then showers likely overnight. waves 1 to 3 feet. 
.sunday...southwest winds 15 to 20 knots becoming west. showers
with a chance of thunderstorms. waves 1 to 3 feet building to
2 to 4 feet. 
.monday...west winds 15 to 25 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. 
.tuesday...west winds 5 to 15 knots becoming southwest. waves
1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 201943
glfle 
expires:202608210215;;066819

open lake forecast for lake erie
national weather service cleveland oh
343 pm 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. the low will drag a cold front across the lake saturday
night into sunday.


lez162>164-210215-
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-
343 pm edt thu aug 20 2026

.tonight...east winds 5 to 15 knots. waves 1 to 3 feet. 
.friday...east winds 5 to 10 knots. waves 2 feet or less. 
.friday night...east winds 5 to 10 knots becoming south. waves
1 foot or less. 
.saturday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms in the afternoon. waves 1 foot or less. 
.saturday night...west winds 10 to 15 knots becoming northwest.
showers with a chance of thunderstorms in the evening, then a
chance of showers overnight. waves 1 to 3 feet. 
.sunday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.tuesday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 201943
glfle 
expires:202608210215;;066820

open lake forecast for lake erie
national weather service cleveland oh
343 pm 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. the low will drag a cold front across the lake saturday
night into sunday.


lez165>167-210215-
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-
343 pm edt thu aug 20 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 201943
glfle 
expires:202608210215;;066821

open lake forecast for lake erie
national weather service cleveland oh
343 pm 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. the low will drag a cold front across the lake saturday
night into sunday.


lez061-168-169-210215-
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-
343 pm edt thu aug 20 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 201941
glfsc 
expires:202608210345;;066731

lake st clair forecast
national weather service detroit/pontiac mi
341 pm 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 today and friday. the next low pressure system then arrives
saturday, dragging a cold front across the area and increasing
shower and thunderstorm chances. post-frontal northwest flow
leads to gusty winds sunday.


lcz460-210345-
lake st clair-
341 pm edt thu aug 20 2026

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

$$

fzus63 kdtx 201940
glflh 
expires:202608210345;;066728

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm 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 today and friday. the next low pressure system then arrives
saturday, dragging a cold front across the area and increasing
shower and thunderstorm chances. post-frontal northwest flow
leads to gusty winds sunday.


lhz462>464-210345-
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-
340 pm edt thu aug 20 2026

.tonight...northeast winds 5 to 10 knots veering to the east
after midnight. waves 2 feet or less. 
.friday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. waves 1 to 3 feet. 
.saturday...south winds 5 to 10 knots. a chance of showers in the
morning...then showers and a chance of thunderstorms in the
afternoon. a chance of waterspouts. waves 1 to 3 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest
15 to 20 knots in the late evening and overnight. showers likely
and a chance of thunderstorms in the evening...then showers
likely after midnight. waves 1 to 3 feet building to 4 to 6 feet
in the late evening and overnight. waves occasionally around
8 feet. 
.sunday...northwest winds 15 to 20 knots increasing to 20 to
25 knots late in the morning...then decreasing to 15 to 20 knots
late in the evening. gusts to 30 knots. a chance of waterspouts.
a chance of showers. a chance of thunderstorms late in the
afternoon. waves 6 to 9 feet. waves occasionally around 11 feet. 
.monday...northwest winds 15 to 20 knots decreasing to 5 to
10 knots . waves 4 to 6 feet subsiding to 1 to 3 feet by
midnight. waves occasionally around 8 feet. 
.tuesday...west winds 5 to 10 knots backing to the southwest
early in the evening...then becoming south 10 to 15 knots by
midnight. waves 2 feet or less. 


$$

fzus63 kdtx 201940
glflh 
expires:202608210345;;066727

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm 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 today and friday. the next low pressure system then arrives
saturday, dragging a cold front across the area and increasing
shower and thunderstorm chances. post-frontal northwest flow
leads to gusty winds sunday.


lhz361>363-210345-
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-
340 pm edt thu aug 20 2026

.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. a chance of showers
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet in
the afternoon. 
.friday night...southeast winds 10 to 15 knots. a chance of
showers. a chance of waterspouts after midnight. waves 3 to
5 feet. 
.saturday...south winds 5 to 10 knots. a chance of waterspouts in
the morning. showers in the morning...then showers and a chance
of thunderstorms in the afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and afternoon. 
.saturday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. a chance of
showers. waves 4 to 6 feet. waves occasionally around 8 feet. 
.sunday...northwest winds 20 to 25 knots decreasing to 15 to
20 knots late in the evening. gusts to 30 knots. a chance of 
showers in the morning. a chance of waterspouts in the morning. 
waves 8 to 12 feet. waves occasionally around 15 feet. 
.monday...northwest winds 15 to 20 knots becoming west 5 to
10 knots. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tuesday...west winds 5 to 10 knots backing to the southwest
until early evening...then becoming south 10 to 15 knots by
midnight. waves 1 to 3 feet. 


$$