fzus61 kbuf 202003
glflo 
expires:202605210300;;362908

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt wed may 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 large 30.4 inch area of surface high pressure will 
build across the entire great lakes region through thursday, before 
sliding east off the new england coast late friday. this surface 
high will then strengthen to 30.6 inches as it anchors over atlantic 
canada through sunday. a 29.9 inch low and attendant warm front will 
then slowly approach the lake late friday night and saturday, before 
weakening and sliding eastward sunday. a 30.1 inch high will settle 
across the region monday through tuesday.


loz062-210300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt wed may 20 2026

.tonight...northwest winds 10 to 15 knots becoming northeast
15 to 20 knots. waves 1 to 3 feet. 
.thursday...northeast winds 15 to 20 knots becoming southeast
5 to 15 knots. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.thursday night...east winds 10 knots or less. waves 1 foot or
less. 
.friday...east winds 5 to 10 knots increasing to 15 to 20 knots.
waves 1 to 3 feet building to 2 to 4 feet. 
.friday night...east winds 15 to 20 knots. a chance of showers
overnight. waves 2 to 4 feet. 
.saturday...east winds 15 to 25 knots. showers. waves 5 to 8 feet
subsiding to 3 to 6 feet. waves occasionally around 10 feet. 
.sunday...southeast winds 5 to 15 knots becoming south. showers
likely during the day, then a chance of showers sunday night.
waves 2 to 4 feet subsiding to 2 feet or less. 
.monday...southwest winds 10 knots or less becoming west. a
chance of showers during the day. waves 1 foot or less. 

$$

fzus61 kbuf 202003
glflo 
expires:202605210300;;362909

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt wed may 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 large 30.4 inch area of surface high pressure will 
build across the entire great lakes region through thursday, before 
sliding east off the new england coast late friday. this surface 
high will then strengthen to 30.6 inches as it anchors over atlantic 
canada through sunday. a 29.9 inch low and attendant warm front will 
then slowly approach the lake late friday night and saturday, before 
weakening and sliding eastward sunday. a 30.1 inch high will settle 
across the region monday through tuesday.


loz063>065-210300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt wed may 20 2026

.tonight...west winds 15 to 25 knots becoming northeast. waves
3 to 6 feet. 
.thursday...northeast winds 15 to 20 knots becoming west 5 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.thursday night...northwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.friday...east winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.friday night...northeast winds 10 to 15 knots becoming east. a
chance of showers overnight. waves 1 to 3 feet. 
.saturday...east winds 15 to 25 knots becoming southeast.
showers. waves 2 to 4 feet building to 3 to 6 feet. 
.sunday...southeast winds 15 to 25 knots becoming south and
diminishing to 10 to 15 knots. showers. waves 3 to 6 feet
subsiding to 1 to 3 feet. 
.monday...south winds 5 to 15 knots becoming west. showers likely
during the day. waves 2 feet or less. 

$$

fzus61 kcle 201959
glfle 
expires:202605210215;;362625

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt wed may 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 30.40 inches builds across the great lakes region
tonight into thursday before shifting northeast on friday. low
pressure 30.00 inches will lift northeast towards lake erie on
friday before lifting a warm front on saturday. a cold front will
cross lake erie on sunday before high pressure 30.20 inches builds
overhead on monday.


lez164>168-210215-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
359 pm edt wed may 20 2026

.tonight...north winds 10 to 15 knots becoming northeast 15 to
20 knots. waves 2 to 4 feet. 
.thursday...northeast winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 6 feet. 
.thursday night...northeast winds 15 to 20 knots becoming east.
waves 3 to 6 feet. 
.friday...east winds 15 to 20 knots. a chance of showers in the
afternoon. waves 3 to 6 feet. 
.friday night...east winds 15 to 20 knots. showers. waves 3 to
6 feet subsiding to 2 to 4 feet. 
.saturday...southeast winds 15 to 20 knots becoming south 10 to
15 knots. showers with a chance of thunderstorms during the day,
then a chance of showers saturday night. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.sunday...south winds 10 knots or less becoming southwest. a
chance of showers and thunderstorms during the day, then a chance
of showers sunday night. waves 2 feet or less. 
.monday...west winds less than 10 knots becoming east. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 201959
glfle 
expires:202605210215;;362626

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt wed may 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 30.40 inches builds across the great lakes region
tonight into thursday before shifting northeast on friday. low
pressure 30.00 inches will lift northeast towards lake erie on
friday before lifting a warm front on saturday. a cold front will
cross lake erie on sunday before high pressure 30.20 inches builds
overhead on monday.


lez061-169-210215-
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-
359 pm edt wed may 20 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 201959
glfle 
expires:202605210215;;362624

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt wed may 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 30.40 inches builds across the great lakes region
tonight into thursday before shifting northeast on friday. low
pressure 30.00 inches will lift northeast towards lake erie on
friday before lifting a warm front on saturday. a cold front will
cross lake erie on sunday before high pressure 30.20 inches builds
overhead on monday.


lez162-163-210215-
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-
359 pm edt wed may 20 2026

.tonight...northeast winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...northeast winds 15 to 20 knots becoming east. waves
2 to 4 feet building to 3 to 6 feet. 
.thursday night...east winds 15 to 20 knots. waves 3 to 6 feet. 
.friday...east winds 15 to 25 knots. a chance of showers in the
afternoon. waves 3 to 6 feet. 
.friday night...east winds 15 to 25 knots. showers. waves 3 to
6 feet. 
.saturday...southeast winds 15 to 20 knots becoming south 5 to
15 knots. showers during the day. waves 2 to 4 feet subsiding to
1 foot or less. 
.sunday...south winds 5 to 10 knots becoming west. a chance of
showers and thunderstorms during the day, then a chance of
showers sunday night. waves 1 foot or less. 
.monday...northwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 201940
glflh 
expires:202605210345;;362181

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt wed may 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, 30.40 inches, will continue to build
over the great lakes this evening then slowly move east across
the region through friday morning. as this occurs, northwest flow
will veer to the northeast and persist into friday.


lhz361-210345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
340 pm edt wed may 20 2026

.tonight...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet early in the morning. 
.thursday...northeast winds 5 to 10 knots veering to the east in
the afternoon. waves 2 feet or less. 
.thursday night...light and variable winds becoming east 5 to
10 knots after midnight. waves 2 feet or less. 
.friday...east winds 10 to 15 knots. waves 1 to 3 feet building
to 2 to 4 feet early in the afternoon. 
.friday night...east winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots after midnight. a chance
of showers after midnight. waves 3 to 5 feet building to 6 to
9 feet after midnight. waves occasionally around 12 feet. 
.saturday...east winds to 30 knots with gusts to 35 knot gales
decreasing to 10 to 15 knots. showers likely...then a chance of
showers late in the afternoon. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.sunday...east winds 5 to 10 knots veering to the south by
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet . 
.monday...west winds 5 to 10 knots backing to the south by
midnight. waves 2 feet or less. 


$$

fzus63 kdtx 201940
glfsc 
expires:202605210345;;362191

lake st clair forecast
national weather service detroit/pontiac mi
340 pm edt wed may 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, 30.40 inches, will continue to build
over the great lakes this evening then slowly move east across
the region through friday morning. as this occurs, northwest flow
will veer to the northeast and persist into friday.


lcz460-210345-
lake st clair-
340 pm edt wed may 20 2026

.tonight...northeast winds 10 to 15 knots. mostly cloudy becoming
mostly clear. waves 1 to 3 feet.
.thursday...northeast winds 10 to 15 knots. sunny. waves 2 feet or
less.
.thursday night...northeast winds 15 to 20 knots diminishing to 10
to 15 knots by midnight...then increasing to 15 to 20 knots after
midnight. mostly clear. waves 1 to 3 feet.
.friday...east winds 15 to 20 knots. partly sunny. waves 2 to 4
feet.
.friday night...east winds 20 to 25 knots increasing to 30 knots
after midnight. showers likely ...then showers after midnight. waves
3 to 5 feet. waves occasionally around 7 feet. a small craft
advisory may be needed.
.saturday...east winds to 30 knots becoming southeast 10 to 15
knots. showers...then a chance of showers in the evening. waves 2 to
4 feet subsiding to 1 to 3 feet in the evening.
.sunday...south winds 5 to 10 knots. mostly cloudy with a chance of
showers. waves 2 feet or less.
.monday...east winds 5 to 10 knots. partly cloudy. waves 2 feet or
less.

$$

fzus63 kdtx 201940
glflh 
expires:202605210345;;362182

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt wed may 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, 30.40 inches, will continue to build
over the great lakes this evening then slowly move east across
the region through friday morning. as this occurs, northwest flow
will veer to the northeast and persist into friday.


lhz362-363-210345-
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 wed may 20 2026

.tonight...north winds 10 to 15 knots. waves 3 to 5 feet. 
.thursday...northeast winds 10 to 15 knots decreasing to 5 to
10 knots in the afternoon. waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon. 
.thursday night...northeast winds 5 to 10 knots. waves 1 to
3 feet. 
.friday...east winds 10 to 15 knots. waves 1 to 3 feet building
to 2 to 4 feet early in the afternoon. 
.friday night...east winds 15 to 20 knots. gusts to 30 knots
after midnight. a chance of showers after midnight. waves 5 to
7 feet. waves occasionally around 10 feet. 
.saturday...east winds 20 to 25 knots with gusts to 35 knot gales
becoming southeast 10 to 15 knots. showers in the morning. rain
showers likely late in the morning...then a chance of showers
late in the evening. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.sunday...southeast winds 5 to 10 knots. waves 3 to 5 feet
subsiding to 1 to 3 feet . 
.monday...northwest winds 5 to 10 knots veering to the north
early in the evening...then veering to the southeast by midnight.
waves 2 feet or less. 


$$

fzus63 kdtx 201940
glflh 
expires:202605210345;;362183

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt wed may 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, 30.40 inches, will continue to build
over the great lakes this evening then slowly move east across
the region through friday morning. as this occurs, northwest flow
will veer to the northeast and persist into friday.


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 wed may 20 2026

.tonight...north winds 10 to 15 knots decreasing to 5 to 10 knots
late in the evening...then increasing to 10 to 15 knots after
midnight. waves 3 to 5 feet. 
.thursday...north winds 10 to 15 knots becoming northeast 5 to
10 knots late in the morning...then becoming north 10 to 15 knots
in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in
the late morning and early afternoon...then building to 2 to
4 feet late in the afternoon. 
.thursday night...north winds 10 to 15 knots veering to the east
after midnight. waves 2 to 4 feet subsiding to 1 to 3 feet after
midnight. 
.friday...east winds 10 to 15 knots. waves 2 to 4 feet. 
.friday night...northeast winds 10 to 15 knots becoming east
20 to 25 knots with gusts to around 30 knots. showers likely
after midnight. waves 4 to 6 feet. 
.saturday...east winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots late in the afternoon...
then becoming southeast 5 to 10 knots late in the evening.
showers. rain showers likely late in the afternoon...then a
chance of showers late in the evening. waves 5 to 7 feet
subsiding to 2 to 4 feet late in the evening. waves occasionally
around 10 feet. 
.sunday...southeast winds 5 to 10 knots. a chance of showers
until early evening. waves 2 feet or less. 
.monday...light and variable winds becoming north 5 to 10 knots
until early evening...then veering to the northeast by midnight.
waves 2 feet or less. 


$$