fzus61 kbuf 121402
glflo 
expires:202605122100;;438102

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue may 12 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 30.3 inch high over the lower great lakes today will 
drift to the eastern seaboard through tonight. a 29.7 inch low over 
the central great lakes tonight will move to near the north shore of 
lake ontario by wednesday evening, then weaken into a trough over 
eastern new york and new england thursday. a 30.1 inch high will 
then build from the central great lakes and ohio valley thursday 
night to the lower great lakes and mid atlantic friday, then off the 
carolina coast saturday.


loz062-122100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt tue may 12 2026

.this afternoon...east winds 10 knots or less. waves 1 foot or
less. 
.tonight...east winds 5 to 15 knots becoming southeast 15 to
20 knots. a chance of showers early, then showers from late
evening on. waves 2 feet or less building to 2 to 3 feet. 
.wednesday...south winds 15 to 20 knots becoming southwest.
showers. waves 2 to 4 feet. 
.wednesday night...southwest winds 10 to 15 knots becoming west.
a chance of showers in the evening. waves 1 to 3 feet. 
.thursday...west winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.friday...northwest winds 5 to 15 knots becoming southwest. waves
1 to 2 feet. 
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 121402
glflo 
expires:202605122100;;438103

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue may 12 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 30.3 inch high over the lower great lakes today will 
drift to the eastern seaboard through tonight. a 29.7 inch low over 
the central great lakes tonight will move to near the north shore of 
lake ontario by wednesday evening, then weaken into a trough over 
eastern new york and new england thursday. a 30.1 inch high will 
then build from the central great lakes and ohio valley thursday 
night to the lower great lakes and mid atlantic friday, then off the 
carolina coast saturday.


loz063>065-122100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt tue may 12 2026

.this afternoon...northwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.tonight...east winds 5 to 15 knots becoming southeast 15 to
20 knots. a chance of showers. showers late. waves 1 to 3 feet. 
.wednesday...southeast winds 15 to 25 knots becoming south.
showers. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.wednesday night...southwest winds 5 to 15 knots becoming west.
showers in the evening, then a chance of showers overnight. waves
1 to 3 feet. 
.thursday...west winds 5 to 10 knots becoming northwest. a chance
of showers during the day. waves 2 feet or less. 
.friday...northwest winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.saturday...south winds 10 to 15 knots becoming west. waves 1 to
3 feet. 

$$

fzus61 kcle 121346
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open lake forecast for lake erie
national weather service cleveland oh
946 am edt tue may 12 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...
a warm front will cross the lake today. low pressure 29.60 inches
will move southeast across the great lakes tonight into wednesday.
this low will extend a cold front across the lake by wednesday
night. a trough averaging 29.90 inches will remain across the lake
on thursday. high pressure 30.10 inches will move through the
region thursday night into friday. a warm front will move across
the lake on friday night into saturday.


lez165>167-122030-
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-
946 am edt tue may 12 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 121346
glfle 
expires:202605122030;;437614

open lake forecast for lake erie
national weather service cleveland oh
946 am edt tue may 12 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...
a warm front will cross the lake today. low pressure 29.60 inches
will move southeast across the great lakes tonight into wednesday.
this low will extend a cold front across the lake by wednesday
night. a trough averaging 29.90 inches will remain across the lake
on thursday. high pressure 30.10 inches will move through the
region thursday night into friday. a warm front will move across
the lake on friday night into saturday.


lez061-168-169-122030-
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-
946 am edt tue may 12 2026

.this afternoon...east winds less than 10 knots becoming
northeast. waves 1 foot or less. 
.tonight...east winds 5 to 10 knots becoming south and increasing
to 15 to 20 knots. a slight chance of showers early, then a
chance of showers late in the evening. showers with a slight
chance of thunderstorms after midnight. waves 1 foot or less
building to 1 to 3 feet. 
.wednesday...southwest winds 15 to 25 knots becoming west.
showers in the morning. waves 3 to 5 feet building to 4 to
7 feet. waves occasionally around 9 feet. 
.wednesday night...west winds 15 to 20 knots. a chance of
showers. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...northwest winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.friday...northwest winds 10 knots or less becoming south. waves
2 feet or less. 
.saturday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 121346
glfle 
expires:202605122030;;437612

open lake forecast for lake erie
national weather service cleveland oh
946 am edt tue may 12 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...
a warm front will cross the lake today. low pressure 29.60 inches
will move southeast across the great lakes tonight into wednesday.
this low will extend a cold front across the lake by wednesday
night. a trough averaging 29.90 inches will remain across the lake
on thursday. high pressure 30.10 inches will move through the
region thursday night into friday. a warm front will move across
the lake on friday night into saturday.


lez162>164-122030-
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-
946 am edt tue may 12 2026

.this afternoon...southeast winds 5 to 10 knots becoming east.
waves 1 foot or less. 
.tonight...southeast winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. a slight chance of showers early,
then a chance of showers with a slight chance of thunderstorms
late in the evening. showers with a slight chance of
thunderstorms after midnight. waves 1 to 3 feet building to 2 to
4 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west. waves
2 to 4 feet building to 3 to 5 feet. 
.wednesday night...northwest winds 15 to 20 knots. a chance of
showers. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...northwest winds 15 to 20 knots becoming north and
diminishing to less than 10 knots. waves 2 to 4 feet subsiding to
1 foot or less. 
.friday...southwest winds 10 knots or less becoming south 10 to
15 knots. waves 2 feet or less. 
.saturday...southwest winds 5 to 15 knots. a chance of showers
saturday night. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 121359
glflh 
expires:202605122200;;437965

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 am edt tue may 12 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...low pressure of 29.70 inches will track west to east
across the northern great lakes through wednesday. this system
will bring increasing south winds this afternoon and evening,
followed by gusty west and northwest winds for wednesday. showers
and a few thunderstorms accompany the arrival of this system this
evening and into the overnight hours.


lhz361-362-122200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
959 am edt tue may 12 2026

.rest of today...southeast winds 10 to 15 knots increasing to
15 to 20 knots in the afternoon. showers in the afternoon. waves
1 to 3 feet building to 4 to 6 feet in the afternoon. waves
occasionally around 8 feet. 
.tonight...southeast winds 20 to 25 knots with gusts to around
30 knots becoming east 15 to 20 knots early in the morning.
showers in the evening...then a chance of showers after midnight.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.wednesday...northwest winds 15 to 20 knots. a chance of showers.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.wednesday night...northwest winds 15 to 20 knots. a chance of
showers in the evening. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.thursday...northwest winds 15 to 20 knots becoming north 10 to
15 knots late in the morning...then becoming west 5 to 10 knots
late in the afternoon. waves 3 to 5 feet subsiding to 1 to 3 feet
late in the evening. 
.friday...south winds 5 to 10 knots increasing to 15 to 20 knots.
waves 1 to 3 feet building to 3 to 5 feet . 
.saturday...southwest winds 15 to 20 knots veering to the west
early in the evening...then becoming northwest 10 to 15 knots by
midnight. a chance of showers early in the morning. waves 3 to
5 feet. 


$$

fzus63 kdtx 121359
glfsc 
expires:202605122200;;437939

lake st clair forecast
national weather service detroit/pontiac mi
959 am edt tue may 12 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...low pressure of 29.70 inches will track west to east
across the northern great lakes through wednesday. this system
will bring increasing south winds this afternoon and evening,
followed by gusty west and northwest winds for wednesday. showers
and a few thunderstorms accompany the arrival of this system this
evening and into the overnight hours.


lcz460-122200-
lake st clair-
959 am edt tue may 12 2026

...small craft advisory in effect from this evening through
wednesday evening...

.rest of today...southeast winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. mostly cloudy. waves 2 feet or less.
.tonight...south winds 15 to 20 knots veering to the southwest early
in the morning. mostly cloudy. showers likely and a chance of
thunderstorms. waves 1 to 3 feet.
.wednesday...west winds 15 to 20 knots. partly sunny. waves 1 to 3
feet.
.wednesday night...northwest winds 15 to 20 knots. mostly cloudy.
waves 1 to 3 feet.
.thursday...north winds 15 to 20 knots diminishing to 10 to 15 knots
in the evening. partly cloudy then clearing. waves 1 to 3 feet.
.friday...south winds 10 to 15 knots. partly cloudy. waves 2 feet or
less.
.saturday...west winds 10 to 15 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 121359
glflh 
expires:202605122200;;437966

open lake forecast for lake huron
national weather service detroit/pontiac mi
959 am edt tue may 12 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...low pressure of 29.70 inches will track west to east
across the northern great lakes through wednesday. this system
will bring increasing south winds this afternoon and evening,
followed by gusty west and northwest winds for wednesday. showers
and a few thunderstorms accompany the arrival of this system this
evening and into the overnight hours.


lhz363-462>464-122200-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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 tue may 12 2026

.rest of today...southeast winds 5 to 10 knots increasing to
10 to 15 knots in the afternoon. showers in the afternoon. waves
1 to 3 feet building to 3 to 5 feet in the afternoon. 
.tonight...southeast winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots late in the evening...then
becoming south 15 to 20 knots after midnight decreasing to 10 to
15 knots early in the morning. showers and a chance of
thunderstorms in the evening. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.wednesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots in the late morning and early afternoon...then veering
to the northwest early in the afternoon. a chance of showers in
the afternoon. waves 4 to 6 feet. waves occasionally around
8 feet. 
.wednesday night...northwest winds 20 to 25 knots decreasing to
15 to 20 knots after midnight. gusts to 30 knots. a chance of
showers in the evening. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.thursday...northwest winds 15 to 20 knots becoming light and
variable. waves 4 to 6 feet subsiding to 1 to 3 feet late in the
evening. waves occasionally around 8 feet. 
.friday...light and variable winds becoming south 5 to 10 knots
in the late morning and early afternoon...then increasing to
10 to 15 knots early in the evening increasing to 15 to 20 knots
by midnight. waves 1 to 3 feet building to 2 to 4 feet . 
.saturday...south winds 15 to 20 knots becoming southwest 10 to
15 knots until early evening...then veering to the west by
midnight. waves 2 to 4 feet. 


$$