fzus61 kbuf 180810
glflo 
expires:202605181500;;757843

open lake forecast for lake ontario
national weather service buffalo ny
410 am edt mon may 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...an area of low pressure will develop over the central 
plains today. the low will weaken from 29.4 inches to 29.6 inches as 
it tracks northeast to the upper great lakes tonight into tuesday 
morning, then to central quebec wednesday while strengthening to 
29.4 inches. a cold front attendant to this low will cross the lake 
late tuesday night into wednesday morning. a large 30.4 inch high 
will then build across the entire great lakes region wednesday night 
through thursday. high pressure will move to the east and weaken to 
30.1 inches friday.


loz062-181500-
lake ontario open waters from the niagara river to hamlin beach-
410 am edt mon may 18 2026

.today...south winds 5 to 15 knots becoming southwest 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers after midnight. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots. waves 1 to 3 feet
building to 3 to 6 feet. 
.tuesday night...southwest winds 15 to 25 knots becoming west.
showers with a chance of thunderstorms in the evening, then
showers overnight. waves 3 to 6 feet. 
.wednesday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.thursday...northeast winds 10 knots or less becoming east. waves
2 feet or less. 
.friday...east winds 10 to 15 knots. a chance of showers friday
night. waves 2 feet or less building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 180810
glflo 
expires:202605181500;;757844

open lake forecast for lake ontario
national weather service buffalo ny
410 am edt mon may 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...an area of low pressure will develop over the central 
plains today. the low will weaken from 29.4 inches to 29.6 inches as 
it tracks northeast to the upper great lakes tonight into tuesday 
morning, then to central quebec wednesday while strengthening to 
29.4 inches. a cold front attendant to this low will cross the lake 
late tuesday night into wednesday morning. a large 30.4 inch high 
will then build across the entire great lakes region wednesday night 
through thursday. high pressure will move to the east and weaken to 
30.1 inches friday.


loz063>065-181500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
410 am edt mon may 18 2026

.today...south winds 5 to 15 knots. waves 2 feet or less. 
.tonight...south winds 5 to 10 knots becoming southwest. a chance
of showers late in the evening. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming west.
showers with a chance of thunderstorms. waves 2 to 4 feet
building to 3 to 5 feet. 
.wednesday...west winds 15 to 25 knots becoming northwest.
showers likely during the day. waves 3 to 5 feet building to 4 to
7 feet, then subsiding to 3 to 5 feet. waves occasionally around
9 feet. 
.thursday...north winds 5 to 15 knots becoming east less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.friday...east winds 5 to 15 knots becoming southeast. a chance
of showers friday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180743
glfle 
expires:202605181415;;756328

open lake forecast for lake erie
national weather service cleveland oh
343 am edt mon may 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...
southerly flow continues across the region through tuesday. low
pressure 29.70 inches tracks through the northern great lakes on
tuesday, pulling a cold front southeast across lake erie late
tuesday night and early wednesday morning. high pressure 30.40
inches builds into the great lakes wednesday and thursday, exiting
to the east across new england on friday. 


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-
343 am edt mon may 18 2026

.today...south winds 10 to 15 knots becoming southwest 15 to
20 knots. a slight chance of showers and thunderstorms late.
waves 1 to 3 feet. 
.tonight...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers and thunderstorms in the evening,
then a chance of showers with a slight chance of thunderstorms
after midnight. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers and thunderstorms likely in the afternoon.
waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming
northwest 10 to 15 knots. showers with thunderstorms likely in
the evening, then showers overnight. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.wednesday...north winds 10 to 15 knots becoming northeast 15 to
20 knots. waves 1 to 3 feet. 
.thursday...northeast winds 15 to 20 knots becoming east. waves
1 to 3 feet. 
.friday...east winds 15 to 20 knots becoming southeast 10 to
15 knots. a chance of showers during the day, then showers likely
friday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180743
glfle 
expires:202605181415;;756329

open lake forecast for lake erie
national weather service cleveland oh
343 am edt mon may 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...
southerly flow continues across the region through tuesday. low
pressure 29.70 inches tracks through the northern great lakes on
tuesday, pulling a cold front southeast across lake erie late
tuesday night and early wednesday morning. high pressure 30.40
inches builds into the great lakes wednesday and thursday, exiting
to the east across new england on friday. 


lez165>168-181415-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
343 am edt mon may 18 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 180743
glfle 
expires:202605181415;;756330

open lake forecast for lake erie
national weather service cleveland oh
343 am edt mon may 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...
southerly flow continues across the region through tuesday. low
pressure 29.70 inches tracks through the northern great lakes on
tuesday, pulling a cold front southeast across lake erie late
tuesday night and early wednesday morning. high pressure 30.40
inches builds into the great lakes wednesday and thursday, exiting
to the east across new england on friday. 


lez061-169-181415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
343 am edt mon may 18 2026

.today...south winds 5 to 15 knots becoming southwest. waves 1 to
2 feet. 
.tonight...southwest winds 5 to 10 knots. a slight chance of
showers and thunderstorms late in the evening. a chance of
showers with a slight chance of thunderstorms after midnight.
waves 1 to 2 feet. 
.tuesday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.tuesday night...southwest winds 10 to 15 knots becoming west.
showers with thunderstorms likely in the evening, then showers
overnight. waves 2 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots becoming north. waves
1 to 3 feet. 
.thursday...northeast winds 10 to 15 knots becoming east. waves
2 feet or less. 
.friday...east winds 5 to 15 knots becoming southeast. a chance
of showers during the day, then showers likely friday night.
waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 180715
glflh 
expires:202605181515;;755522

open lake forecast for lake huron
national weather service detroit/pontiac mi
315 am edt mon may 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 warm front lifts across lake huron this morning,
with southerly flow expanding across all of the local waters.
strong to severe thunderstorms are possible this afternoon-
evening and again tuesday as a cold front sweeps across the
region. high pressure, 30.50 inches, then builds in mid-week.


lhz361-181515-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
315 am edt mon may 18 2026

.today...southeast winds 10 to 15 knots decreasing to 5 to
10 knots in the afternoon. a chance of showers and thunderstorms
in the afternoon. waves 3 to 5 feet. 
.tonight...south winds 5 to 10 knots backing to the southeast in
the late evening and overnight. a chance of showers and
thunderstorms. waves 2 to 4 feet subsiding to 1 to 3 feet after
midnight. 
.tuesday...south winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and early afternoon...then veering
to the southwest early in the afternoon. showers likely and a
chance of thunderstorms in the morning...then showers in the
afternoon. waves 3 to 5 feet building to 5 to 7 feet early in the
afternoon. waves occasionally around 10 feet. 
.tuesday night...northwest winds 20 to 25 knots. gusts to
30 knots in the late evening and overnight. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.wednesday...northwest winds 20 to 25 knots with gusts to around
30 knots becoming north 5 to 10 knots. waves 6 to 9 feet
subsiding to 3 to 5 feet late in the afternoon. waves
occasionally around 12 feet. 
.thursday...light and variable winds becoming east 5 to 10 knots
. waves 2 feet or less. 
.friday...southeast winds 5 to 10 knots becoming east 10 to
15 knots. waves 1 to 3 feet. 


$$

fzus63 kdtx 180715
glflh 
expires:202605181515;;755523

open lake forecast for lake huron
national weather service detroit/pontiac mi
315 am edt mon may 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 warm front lifts across lake huron this morning,
with southerly flow expanding across all of the local waters.
strong to severe thunderstorms are possible this afternoon-
evening and again tuesday as a cold front sweeps across the
region. high pressure, 30.50 inches, then builds in mid-week.


lhz362-363-181515-
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-
315 am edt mon may 18 2026

.today...south winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. a chance of showers and
thunderstorms in the afternoon. waves 4 to 6 feet. 
.tonight...south winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. a chance of showers
and thunderstorms in the evening...then a chance of showers after
midnight. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tuesday...south winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and afternoon. a chance of showers
in the afternoon. waves 5 to 7 feet building to 6 to 9 feet early
in the afternoon. waves occasionally around 12 feet. 
.tuesday night...southwest winds 15 to 20 knots veering to the
northwest in the late evening and overnight. a chance of showers
in the evening. waves 8 to 12 feet. waves occasionally around
15 feet. 
.wednesday...northwest winds 15 to 20 knots veering to the north
late in the afternoon...then decreasing to 10 to 15 knots late in
the evening. waves 6 to 9 feet subsiding to 3 to 5 feet late in
the evening. waves occasionally around 12 feet. 
.thursday...north winds 5 to 10 knots veering to the northeast by
midnight. waves 1 to 3 feet. 
.friday...east winds 5 to 10 knots increasing to 10 to 15 knots.
waves 2 feet or less. 


$$

fzus63 kdtx 180715
glflh 
expires:202605181515;;755524

open lake forecast for lake huron
national weather service detroit/pontiac mi
315 am edt mon may 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 warm front lifts across lake huron this morning,
with southerly flow expanding across all of the local waters.
strong to severe thunderstorms are possible this afternoon-
evening and again tuesday as a cold front sweeps across the
region. high pressure, 30.50 inches, then builds in mid-week.


lhz462>464-181515-
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-
315 am edt mon may 18 2026

.today...south winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. waves 3 to 5 feet. 
.tonight...south winds 10 to 15 knots. showers likely and a
chance of thunderstorms in the evening...then a chance of showers
after midnight. waves 3 to 5 feet. 
.tuesday...south winds 15 to 20 knots. a chance of showers and
thunderstorms in the afternoon. waves 3 to 5 feet. 
.tuesday night...southwest winds 15 to 20 knots. a chance of
showers and thunderstorms in the evening. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.wednesday...north winds 10 to 15 knots. waves 3 to 5 feet. 
.thursday...north winds 5 to 10 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.friday...east winds 5 to 10 knots increasing to 10 to 15 knots .
waves 2 feet or less. 


$$

fzus63 kdtx 180714
glfsc 
expires:202605181515;;755506

lake st clair forecast
national weather service detroit/pontiac mi
314 am edt mon may 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 warm front lifts across lake huron this morning,
with southerly flow expanding across all of the local waters.
strong to severe thunderstorms are possible this afternoon-
evening and again tuesday as a cold front sweeps across the
region. high pressure, 30.50 inches, then builds in mid-week.


lcz460-181515-
lake st clair-
314 am edt mon may 18 2026

...small craft advisory in effect from 10 am edt this morning
through this evening...

.today...south winds 10 to 15 knots increasing to 20 to 25 knots.
mostly sunny. waves 1 to 3 feet building to 2 to 4 feet late in the
afternoon.
.tonight...southwest winds 15 to 20 knots diminishing to 10 to 15
knots after midnight. mostly cloudy with a chance of showers and
thunderstorms in the evening...then partly cloudy with a chance of
light showers after midnight. waves 1 to 3 feet.
.tuesday...south winds 15 to 20 knots becoming southwest 20 to 25
knots with gusts to 30 knots in the late morning and afternoon.
partly sunny. a chance of light showers in the late morning and
early afternoon. light showers likely and a chance of thunderstorms
early in the afternoon. waves 1 to 3 feet building to 2 to 4 feet in
the late morning and afternoon.
.tuesday night...west winds 15 to 20 knots veering to the northwest
after midnight. partly cloudy early in the evening becoming mostly
cloudy. light showers likely and a chance of thunderstorms ...then a
chance of light showers after midnight. waves 2 to 4 feet subsiding
to 1 to 3 feet in the late evening and overnight.
.wednesday...north winds 15 to 20 knots diminishing to 10 to 15
knots in the afternoon...then becoming northeast 15 to 20 knots in
the evening. partly cloudy. waves 2 feet or less.
.thursday...northeast winds 10 to 15 knots. mostly clear. waves 2
feet or less.
.friday...east winds 15 to 20 knots. partly cloudy. a chance of
showers. waves 2 feet or less.

$$