fzus61 kbuf 211403
glflo 
expires:202605212100;;402970

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt thu may 21 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 tonight, 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>065-212100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt thu may 21 2026

.this afternoon...northeast winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tonight...north winds 5 to 10 knots becoming east. 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.
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. showers.
waves 3 to 6 feet subsiding to 1 to 3 feet. 
.monday...south winds 10 knots or less becoming west. showers
likely during the day. waves 2 feet or less. 

$$

fzus61 kbuf 211403
glflo 
expires:202605212100;;402969

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt thu may 21 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 tonight, 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.


loz062-212100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt thu may 21 2026

.this afternoon...northeast winds 5 to 15 knots becoming east.
waves 1 to 3 feet. 
.tonight...east winds 10 knots or less. waves 1 foot or less. 
.friday...east winds 10 to 15 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 3 to 5 feet
building to 5 to 8 feet. waves occasionally around 10 feet. 
.sunday...southeast winds 15 to 20 knots becoming southwest and
diminishing to 10 knots or less. showers likely during the day,
then a chance of showers sunday night. waves 3 to 5 feet
subsiding to 1 foot or less. 
.monday...north winds less than 10 knots. a chance of showers
during the day. waves 1 foot or less. 

$$

fzus61 kcle 211319
glfle 
expires:202605212015;;401928

open lake forecast for lake erie
national weather service cleveland oh
919 am edt thu may 21 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 moves across the great lakes today 
before shifting into new england on friday. low pressure 30.00 
inches will lift northeast towards lake erie on friday night and
saturday, lifting a warm front onto the lake on saturday. a cold 
front will cross lake erie on sunday before high pressure 30.20 
inches builds overhead on monday.


lez061-169-212015-
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-
919 am edt thu may 21 2026

.this afternoon...northeast winds 15 to 25 knots. waves 3 to
6 feet. 
.tonight...northeast winds 15 to 25 knots becoming east. waves
3 to 5 feet. 
.friday...east winds 15 to 25 knots becoming northeast. waves
3 to 6 feet. 
.friday night...east winds 15 to 20 knots. a chance of showers in
the evening, then showers overnight. waves 3 to 5 feet subsiding
to 1 to 3 feet. 
.saturday...east winds 15 to 25 knots becoming south. showers.
waves 2 to 4 feet. 
.sunday...south winds 5 to 15 knots diminishing to less than
10 knots. a chance of showers during the day, then showers likely
sunday night. waves 2 feet or less. 
.monday...west winds less than 10 knots. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 211319
glfle 
expires:202605212015;;401926

open lake forecast for lake erie
national weather service cleveland oh
919 am edt thu may 21 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 moves across the great lakes today 
before shifting into new england on friday. low pressure 30.00 
inches will lift northeast towards lake erie on friday night and
saturday, lifting a warm front onto the lake on saturday. a cold 
front will cross lake erie on sunday before high pressure 30.20 
inches builds overhead on monday.


lez162-163-212015-
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-
919 am edt thu may 21 2026

.this afternoon...northeast winds 15 to 25 knots becoming east.
waves 2 to 4 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 
.tonight...east winds 15 to 25 knots. waves 4 to 7 feet subsiding
to 3 to 6 feet. waves occasionally around 9 feet. 
.friday...east winds 20 to 25 knots. a chance of showers in the
afternoon. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.friday night...east winds 20 to 25 knots. showers likely in the
evening, then showers overnight. waves 4 to 7 feet subsiding to
3 to 6 feet. waves occasionally around 9 feet. 
.saturday...southeast winds 15 to 25 knots becoming west and
diminishing to 5 to 15 knots. showers during the day. waves 3 to
5 feet subsiding to 2 feet or less. 
.sunday...southwest winds 5 to 10 knots becoming northwest. a
chance of showers and thunderstorms during the day, then a chance
of showers sunday night. waves 1 foot or less. 
.monday...north winds 10 knots or less becoming east. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 211319
glfle 
expires:202605212015;;401927

open lake forecast for lake erie
national weather service cleveland oh
919 am edt thu may 21 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 moves across the great lakes today 
before shifting into new england on friday. low pressure 30.00 
inches will lift northeast towards lake erie on friday night and
saturday, lifting a warm front onto the lake on saturday. a cold 
front will cross lake erie on sunday before high pressure 30.20 
inches builds overhead on monday.


lez164>168-212015-
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-
919 am edt thu may 21 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 211359
glflh 
expires:202605212200;;402762

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 am edt thu may 21 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 slowly build
eastward from the northern great lakes to the eastern great lakes
through friday. northeast wind veers east and strengthens into
saturday as low pressure tracks in from the mid-mississippi
valley.


lhz362-363-212200-
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-
959 am edt thu may 21 2026

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


$$

fzus63 kdtx 211359
glflh 
expires:202605212200;;402763

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 am edt thu may 21 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 slowly build
eastward from the northern great lakes to the eastern great lakes
through friday. northeast wind veers east and strengthens into
saturday as low pressure tracks in from the mid-mississippi
valley.


lhz462>464-212200-
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-
959 am edt thu may 21 2026

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


$$

fzus63 kdtx 211359
glflh 
expires:202605212200;;402761

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 am edt thu may 21 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 slowly build
eastward from the northern great lakes to the eastern great lakes
through friday. northeast wind veers east and strengthens into
saturday as low pressure tracks in from the mid-mississippi
valley.


lhz361-212200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
959 am edt thu may 21 2026

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


$$

fzus63 kdtx 211359
glfsc 
expires:202605212200;;402765

lake st clair forecast
national weather service detroit/pontiac mi
959 am edt thu may 21 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 slowly build
eastward from the northern great lakes to the eastern great lakes
through friday. northeast wind veers east and strengthens into
saturday as low pressure tracks in from the mid-mississippi
valley.


lcz460-212200-
lake st clair-
959 am edt thu may 21 2026

.rest of today...northeast winds 10 to 15 knots. mostly sunny. waves
2 feet or less.
.tonight...northeast winds 15 to 20 knots diminishing to 10 to 15
knots by midnight...then becoming east 15 to 20 knots early in the
morning. mostly clear. waves 1 to 3 feet.
.friday...east winds 15 to 20 knots. partly sunny. waves 1 to 3
feet.
.friday night...east winds 15 to 20 knots increasing to 20 to 25
knots with gusts to 30 knots after midnight. a chance of light
showers ...then showers after midnight. waves 1 to 3 feet building
to 2 to 4 feet after midnight. a small craft advisory may be needed.
.saturday...east winds to 30 knots with gusts to 35 knot gales
becoming southeast 15 to 20 knots. showers...then a chance of light
showers in the evening. waves 3 to 5 feet subsiding to 2 to 4 feet
in the evening. waves occasionally around 7 feet.  a gale warning
may be needed.
.sunday...south winds 10 to 15 knots. mostly cloudy with a chance of
showers. waves 2 feet or less.
.monday...east winds 5 to 10 knots. partly cloudy. a chance of
showers. waves 2 feet or less.

$$