fzus61 kbuf 210202
glflo 
expires:202607210900;;321450

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon jul 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 30.0 inch area of high pressure will build across the great lakes 
this evening, followed by a warm front crossing the lake late 
tonight and another cold front tuesday night, with these fronts 
attached to a 29.4 inch area of low pressure near james bay. a 
secondary cold front will cross the lake wednesday, with a 30.1 inch 
high building across the lower great lakes region wednesday night 
through friday.


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

.overnight...southeast winds 5 to 15 knots becoming south
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. a
chance of showers and thunderstorms late in the morning. showers
with thunderstorms likely in the afternoon. some thunderstorms
may produce gusty winds in the afternoon. waves 2 to 4 feet
building to 3 to 5 feet. 
.tuesday night...south winds 15 to 20 knots becoming west.
showers likely with a chance of thunderstorms in the evening,
then showers likely overnight. some thunderstorms may produce
gusty winds in the evening. waves 2 to 4 feet building to 3 to
6 feet. 
.wednesday...west winds 20 to 25 knots. a chance of showers in
the morning. waves 5 to 8 feet building to 6 to 9 feet. waves
occasionally around 11 feet. 
.wednesday night...west winds 15 to 25 knots becoming northwest.
waves 5 to 9 feet subsiding to 3 to 6 feet. waves occasionally
around 11 feet. 
.thursday...west winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.friday...southwest winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 10 knots or less. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 210202
glflo 
expires:202607210900;;321449

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon jul 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 30.0 inch area of high pressure will build across the great lakes 
this evening, followed by a warm front crossing the lake late 
tonight and another cold front tuesday night, with these fronts 
attached to a 29.4 inch area of low pressure near james bay. a 
secondary cold front will cross the lake wednesday, with a 30.1 inch 
high building across the lower great lakes region wednesday night 
through friday.


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

.overnight...south winds 5 to 15 knots. waves 1 to 2 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest. showers
with a chance of thunderstorms in the morning, then showers with
thunderstorms likely in the afternoon. some thunderstorms may
produce gusty winds in the afternoon. waves 1 to 3 feet building
to 3 to 6 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming west.
showers with thunderstorms likely in the evening, then a chance
of showers overnight. some thunderstorms may produce gusty winds
in the evening. waves 3 to 5 feet. 
.wednesday...west winds 15 to 25 knots. waves 3 to 6 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.wednesday night...northwest winds 15 to 25 knots becoming west
and diminishing to 10 to 15 knots. waves 4 to 7 feet subsiding to
2 to 4 feet. waves occasionally around 9 feet. 
.thursday...west winds 5 to 15 knots becoming southwest. waves
1 to 3 feet subsiding to 1 foot or less. 
.friday...southwest winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...southwest winds 10 knots or less. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 210117
glfle 
expires:202607210830;;320225

open lake forecast for lake erie
national weather service cleveland oh
917 pm edt mon jul 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 30.00 inches builds off to the east coast this
evening as a warm front lifts north across the lake late tonight
through early tuesday morning. a cold front will pass west to east
over the lake late tuesday with troughing averaging 29.70 inches
persisting through early wednesday. high pressure 30.10 inches 
builds into the region late wednesday through friday.


lez061-168-169-210830-
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-
917 pm edt mon jul 20 2026

.overnight...southeast winds 5 to 15 knots becoming south
15 to 20 knots. patchy smoke. waves 2 feet or less building to
2 to 4 feet. 
.tuesday...southwest winds 15 to 25 knots. patchy smoke early. a
chance of showers and thunderstorms early, then showers likely
with a chance of thunderstorms late in the morning. a chance of
showers and thunderstorms in the afternoon. waves 3 to 6 feet
building to 5 to 8 feet. waves occasionally around 10 feet. 
.tuesday night...west winds 15 to 20 knots becoming northwest.
showers likely with a chance of thunderstorms in the evening,
then showers likely overnight. waves 4 to 7 feet subsiding to
3 to 5 feet. waves occasionally around 9 feet. 
.wednesday...northwest winds 15 to 20 knots. waves 3 to 5 feet. 
.wednesday night...northwest winds 15 to 20 knots diminishing to
5 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.friday...southeast winds 10 knots or less. waves 1 foot or less.
.saturday...south winds 10 knots or less. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 210117
glfle 
expires:202607210830;;320223

open lake forecast for lake erie
national weather service cleveland oh
917 pm edt mon jul 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 30.00 inches builds off to the east coast this
evening as a warm front lifts north across the lake late tonight
through early tuesday morning. a cold front will pass west to east
over the lake late tuesday with troughing averaging 29.70 inches
persisting through early wednesday. high pressure 30.10 inches 
builds into the region late wednesday through friday.


lez162-163-210830-
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-
917 pm edt mon jul 20 2026

.overnight...south winds 10 to 15 knots becoming southwest
15 to 20 knots. patchy smoke. a chance of showers and
thunderstorms late. waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west. a chance
of showers and thunderstorms through early afternoon, then a
slight chance of showers and thunderstorms late. waves 2 to
4 feet. 
.tuesday night...west winds 15 to 20 knots becoming northwest.
patchy smoke in the evening. waves 2 to 4 feet. 
.wednesday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday night...north winds 5 to 10 knots. waves 2 feet or
less. 
.thursday...north winds 10 knots or less becoming south. waves
1 foot or less. 
.friday...south winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday...northeast winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 210117
glfle 
expires:202607210830;;320224

open lake forecast for lake erie
national weather service cleveland oh
917 pm edt mon jul 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 30.00 inches builds off to the east coast this
evening as a warm front lifts north across the lake late tonight
through early tuesday morning. a cold front will pass west to east
over the lake late tuesday with troughing averaging 29.70 inches
persisting through early wednesday. high pressure 30.10 inches 
builds into the region late wednesday through friday.


lez164>167-210830-
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-
917 pm edt mon jul 20 2026

.overnight...south winds 10 to 15 knots becoming southwest
15 to 20 knots. patchy smoke. a slight chance of showers and
thunderstorms late. waves 1 foot or less building to 3 to 5 feet.
.tuesday...southwest winds 15 to 25 knots. a slight chance of
showers and thunderstorms early, then showers likely with a
chance of thunderstorms late in the morning. a chance of showers
and thunderstorms in the afternoon. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.tuesday night...west winds 15 to 20 knots becoming northwest. a
chance of showers and thunderstorms in the evening, then a chance
of showers overnight. waves 3 to 6 feet. 
.wednesday...northwest winds 15 to 20 knots. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.wednesday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...north winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.friday...southeast winds 10 knots or less. waves 1 foot or less.
.saturday...southeast winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 210136
glfsc 
expires:202607210945;;320682

lake st clair forecast
national weather service detroit/pontiac mi
936 pm edt mon jul 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...a cold front tracks across the great lakes late
tonight, with potential for strong to severe thunderstorms in its
wake. a second cold front then sweeps across the area tuesday
evening, bringing a brief period of gusts to gale force. high
pressure fills in mid-week for a drier pattern to end the work
week.


lcz460-210945-
lake st clair-
936 pm edt mon jul 20 2026

...small craft advisory in effect from 4 am edt tuesday through
tuesday evening...

.rest of tonight...south winds 15 to 20 knots becoming southwest 20
to 25 knots early in the morning. partly cloudy this evening
becoming mostly cloudy. patchy smoke. a chance of light showers
early in the morning. waves 1 to 3 feet building to 2 to 4 feet
early in the morning.
.tuesday...southwest winds 20 to 25 knots becoming west 15 to 20
knots in the late morning and afternoon. partly sunny. a chance of
light showers early in the morning...then a chance of showers and
thunderstorms in the late morning and afternoon. patchy smoke late
in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in the
late morning and afternoon.
.tuesday night...northwest winds 15 to 20 knots increasing to 20 to
25 knots in the late evening and overnight. partly cloudy. a chance
of showers and thunderstorms early in the evening. patchy smoke
early in the evening. waves 1 to 3 feet building to 2 to 4 feet in
the late evening and overnight.
.wednesday...northwest winds 20 to 25 knots diminishing to 10 to 15
knots. partly sunny. waves 1 to 3 feet.
.wednesday night...north winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. clear. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming south 5 to 10 knots in the
evening. clear. waves 2 feet or less.
.friday...southeast winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.saturday...south winds 5 to 10 knots. clear. waves 2 feet or less.

$$

fzus63 kdtx 210135
glflh 
expires:202607210945;;320650

open lake forecast for lake huron
national weather service detroit/pontiac mi
935 pm edt mon jul 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...a cold front tracks across the great lakes late
tonight, with potential for strong to severe thunderstorms in its
wake. a second cold front then sweeps across the area tuesday
evening, bringing a brief period of gusts to gale force. high
pressure fills in mid-week for a drier pattern to end the work
week.


lhz362-363-210945-
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-
935 pm edt mon jul 20 2026

.rest of tonight...south winds 15 to 20 knots with gusts to
around 30 knots. patchy smoke this evening. a chance of showers
and thunderstorms. waves 5 to 7 feet. waves occasionally around
10 feet. 
.tuesday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots in the late morning and early afternoon...then becoming
west 15 to 20 knots with gusts to around 30 knots late in the
afternoon. a chance of showers. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.tuesday night...northwest winds to 30 knots decreasing to 20 to
25 knots after midnight. gusts to 35 knot gales. waves 10 to
14 feet. waves occasionally around 18 feet. 
.wednesday...northwest winds 20 to 25 knots with gusts to around
30 knots. waves 8 to 12 feet. waves occasionally around 15 feet. 
.wednesday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 10 to 15 knots. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.thursday...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then backing to the south late in the
afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the evening...then decreasing to 5 to 10 knots
by midnight. waves 1 to 3 feet. 
.saturday...southwest winds 5 to 10 knots becoming south 10 to
15 knots . waves 1 to 3 feet building to 2 to 4 feet . 


$$

fzus63 kdtx 210135
glflh 
expires:202607210945;;320651

open lake forecast for lake huron
national weather service detroit/pontiac mi
935 pm edt mon jul 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...a cold front tracks across the great lakes late
tonight, with potential for strong to severe thunderstorms in its
wake. a second cold front then sweeps across the area tuesday
evening, bringing a brief period of gusts to gale force. high
pressure fills in mid-week for a drier pattern to end the work
week.


lhz462>464-210945-
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-
935 pm edt mon jul 20 2026

.rest of tonight...south winds 15 to 20 knots. gusts to 30 knots
early in the morning. patchy smoke. a chance of showers and
thunderstorms after midnight. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.tuesday...southwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots in the afternoon. a chance
of showers and thunderstorms. waves 3 to 5 feet. 
.tuesday night...northwest winds 15 to 20 knots increasing to
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. a chance of thunderstorms in the evening. waves
8 to 12 feet. waves occasionally around 15 feet. 
.wednesday...northwest winds 20 to 25 knots decreasing to 15 to
20 knots early in the afternoon. gusts to 30 knots. waves 8 to
12 feet. waves occasionally around 15 feet. 
.wednesday night...north winds 15 to 20 knots becoming northwest
10 to 15 knots in the late evening and overnight. waves 5 to
7 feet. waves occasionally around 10 feet. 
.thursday...west winds 5 to 10 knots backing to the south late in
the afternoon. waves 2 to 4 feet subsiding to 2 feet or less. 
.friday...southwest winds 5 to 10 knots backing to the southeast
. waves 2 feet or less. 
.saturday...south winds 5 to 10 knots backing to the southeast
early in the evening...then becoming south 10 to 15 knots by
midnight. waves 2 feet or less. 


$$

fzus63 kdtx 210135
glflh 
expires:202607210945;;320649

open lake forecast for lake huron
national weather service detroit/pontiac mi
935 pm edt mon jul 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...a cold front tracks across the great lakes late
tonight, with potential for strong to severe thunderstorms in its
wake. a second cold front then sweeps across the area tuesday
evening, bringing a brief period of gusts to gale force. high
pressure fills in mid-week for a drier pattern to end the work
week.


lhz361-210945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
935 pm edt mon jul 20 2026

...severe thunderstorm watch 505 in effect until 2 am edt
tuesday...

.rest of tonight...south winds 10 to 15 knots increasing to 15 to
20 knots after midnight. showers and a chance of thunderstorms.
some thunderstorms may be severe with damaging winds and large
hail this evening. some thunderstorms may produce damaging winds
and large hail after midnight. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.tuesday...southwest winds 15 to 20 knots becoming west 20 to
25 knots with gusts to around 30 knots in the afternoon. waves
4 to 6 feet building to 6 to 9 feet late in the afternoon. waves
occasionally around 12 feet. 
.tuesday night...northwest winds to 30 knots with gusts to
35 knot gales. waves 8 to 12 feet. waves occasionally around
15 feet. 
.wednesday...northwest winds to 30 knots decreasing to 20 to
25 knots in the late morning and afternoon. gusts to 35 knot
gales. waves 6 to 9 feet. waves occasionally around 12 feet. 
.wednesday night...northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 10 to 15 knots in the late evening
and overnight. waves 4 to 6 feet. waves occasionally around
8 feet. 
.thursday...west winds 10 to 15 knots becoming southwest 5 to
10 knots late in the afternoon. waves 1 to 3 feet. 
.friday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then backing
to the south . waves 1 to 3 feet. 
.saturday...southwest winds 5 to 10 knots backing to the south .
a chance of showers by midnight. waves 1 to 3 feet. 


$$