fzus61 kbuf 172002
glflo 
expires:202605180300;;727406

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun may 17 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...high pressure will weaken to 30.0 inches across the 
lake tonight. an area of low pressure will develop over the central 
plains monday. the low will weaken from 29.4 inches to 29.6 inches 
as it tracks northeast to the upper great lakes monday night 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.


loz062-180300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sun may 17 2026

.tonight...southeast winds 5 to 10 knots becoming east. a chance
of showers and thunderstorms from late evening on. waves 1 foot
or less. 
.monday...southeast winds 10 knots or less becoming southwest and
increasing to 15 to 20 knots in the afternoon. waves 1 foot or
less building to 2 to 4 feet. 
.monday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers overnight. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots. a chance of showers in
the morning. 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 north 10 to
15 knots. a chance of showers during the day. waves 3 to 5 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 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 172002
glflo 
expires:202605180300;;727407

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun may 17 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...high pressure will weaken to 30.0 inches across the 
lake tonight. an area of low pressure will develop over the central 
plains monday. the low will weaken from 29.4 inches to 29.6 inches 
as it tracks northeast to the upper great lakes monday night 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>065-180300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sun may 17 2026

.tonight...southeast winds 10 knots or less becoming east. patchy
fog early. patchy fog after midnight. a chance of showers and
thunderstorms after midnight. waves 1 foot or less. 
.monday...southeast winds 5 to 15 knots becoming south. waves
2 feet or less. 
.monday night...south winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots. a chance of showers in
the morning. waves 1 to 3 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 20 knots becoming northwest. a
chance of showers during the day. waves 3 to 6 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 10 knots becoming southeast. a chance
of showers friday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 171938
glfsc 
expires:202605180345;;726709

lake st clair forecast
national weather service detroit/pontiac mi
338 pm edt sun may 17 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 frontal boundary remains stalled over southern lake
huron this afternoon, before lifting north as a warm front
overnight. a few strong to severe thunderstorms will be possible
this afternoon and evening with additional chances both monday
and tuesday afternoon. breezy southerly flow develops early week
as well.


lcz460-180345-
lake st clair-
338 pm edt sun may 17 2026

...small craft advisory in effect from monday morning through
monday evening...

.tonight...south winds 10 to 15 knots. partly cloudy becoming mostly
cloudy late this evening becoming partly cloudy. scattered showers
and thunderstorms early in the evening. waves 2 feet or less.
.monday...south winds 10 to 15 knots increasing to 20 to 25 knots.
mostly sunny. a chance of showers and thunderstorms late in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet late in the
afternoon.
.monday night...southwest winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. partly cloudy becoming mostly cloudy by
midnight becoming partly cloudy. a chance of showers and
thunderstorms . 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.
light showers 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. light showers in the evening. a chance of
thunderstorms. light showers likely 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 and evening. partly sunny in the morning
becoming mostly clear. waves 2 feet or less.
.thursday...northeast winds 10 to 15 knots. mostly clear. waves 2
feet or less.
.friday...east winds 10 to 15 knots. partly cloudy. waves 2 feet or
less.

$$

fzus63 kdtx 171938
glflh 
expires:202605180345;;726705

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm edt sun may 17 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 frontal boundary remains stalled over southern lake
huron this afternoon, before lifting north as a warm front
overnight. a few strong to severe thunderstorms will be possible
this afternoon and evening with additional chances both monday
and tuesday afternoon. breezy southerly flow develops early week
as well.


lhz361-180345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
338 pm edt sun may 17 2026

.tonight...east winds 10 to 15 knots increasing to 15 to 20 knots
by midnight...then decreasing to 10 to 15 knots early in the
morning. showers in the evening...then scattered showers and
thunderstorms after midnight. waves 3 to 5 feet. 
.monday...southeast winds 10 to 15 knots becoming south 5 to
10 knots late in the afternoon. a chance of showers and
thunderstorms in the afternoon. waves 3 to 5 feet. 
.monday night...south winds 5 to 10 knots backing to the
southeast in the late evening and overnight. a chance of showers.
waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. 
.tuesday...southeast winds 10 to 15 knots becoming south 15 to
20 knots in the late morning and early afternoon...then veering
to the southwest early in the afternoon. showers. waves 3 to
5 feet building to 5 to 7 feet early in the afternoon. waves
occasionally around 10 feet. 
.tuesday night...west 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 5 to 7 feet
subsiding to 2 to 4 feet late in the evening. waves occasionally
around 10 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 until early evening...then decreasing to 5 to 10 knots
by midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 171938
glflh 
expires:202605180345;;726706

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm edt sun may 17 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 frontal boundary remains stalled over southern lake
huron this afternoon, before lifting north as a warm front
overnight. a few strong to severe thunderstorms will be possible
this afternoon and evening with additional chances both monday
and tuesday afternoon. breezy southerly flow develops early week
as well.


lhz362-363-180345-
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-
338 pm edt sun may 17 2026

.tonight...northeast winds 10 to 15 knots veering to the east
early in the morning. numerous showers and scattered
thunderstorms in the evening...then scattered showers and
thunderstorms after midnight. waves 2 to 4 feet building to 3 to
5 feet in the late evening and overnight. 
.monday...south winds 15 to 20 knots. a chance of showers and
thunderstorms in the afternoon. waves 4 to 6 feet building to
5 to 7 feet late in the afternoon. waves occasionally around
10 feet. 
.monday night...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 morning...then showers likely in the afternoon. waves 5 to
7 feet. waves occasionally around 10 feet. 
.tuesday night...southwest winds 20 to 25 knots becoming
northwest 15 to 20 knots with gusts to around 30 knots in the
late evening and overnight. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.wednesday...northwest winds 15 to 20 knots. 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 early in the morning
becoming light and variable...then becoming northeast 5 to
10 knots . waves 1 to 3 feet. 
.friday...east winds 5 to 10 knots becoming northeast 10 to
15 knots early in the evening...then decreasing to 5 to 10 knots
by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 171938
glflh 
expires:202605180345;;726707

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm edt sun may 17 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 frontal boundary remains stalled over southern lake
huron this afternoon, before lifting north as a warm front
overnight. a few strong to severe thunderstorms will be possible
this afternoon and evening with additional chances both monday
and tuesday afternoon. breezy southerly flow develops early week
as well.


lhz462>464-180345-
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-
338 pm edt sun may 17 2026

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


$$