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open lake forecast for lake ontario
national weather service buffalo ny
401 am edt mon may 12 2025

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 draped across the new england will 
slide off the east coast later today. a broad, weak 29.8 inch low 
will move into the ohio valley tuesday, then will drift toward the 
mid atlantic coast wednesday. a 29.1 inch low over the upper 
mississippi valley thursday will then make its way to central 
ontario friday, with its associated warm front crossing the lake 
thursday. the low will move into northern quebec friday night 
through saturday. a broad 30.0 inch high will move into the great 
lakes region sunday.


loz063>065-121500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
401 am edt mon may 12 2025

.today...southeast winds 10 knots or less becoming north. waves
1 foot or less. 
.tonight...northeast winds 10 knots or less becoming south. waves
1 foot or less. 
.tuesday...southeast winds 5 to 15 knots. a chance of showers in
the afternoon. waves 2 feet or less. 
.tuesday night...southeast winds 10 to 15 knots. a chance of
showers. waves 1 to 2 feet. 
.wednesday...southeast winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.thursday...southeast winds 5 to 15 knots. a chance of showers.
waves 2 feet or less. 
.friday...south winds 10 to 15 knots. showers likely. waves 1 to
3 feet. 

$$

fzus61 kbuf 120801
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
401 am edt mon may 12 2025

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 draped across the new england will 
slide off the east coast later today. a broad, weak 29.8 inch low 
will move into the ohio valley tuesday, then will drift toward the 
mid atlantic coast wednesday. a 29.1 inch low over the upper 
mississippi valley thursday will then make its way to central 
ontario friday, with its associated warm front crossing the lake 
thursday. the low will move into northern quebec friday night 
through saturday. a broad 30.0 inch high will move into the great 
lakes region sunday.


loz062-121500-
lake ontario open waters from the niagara river to hamlin beach-
401 am edt mon may 12 2025

.today...east winds less than 10 knots. waves 1 foot or less. 
.tonight...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 
.tuesday...east winds 5 to 15 knots. a chance of showers. waves
2 feet or less. 
.tuesday night...east winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.wednesday...east winds 5 to 15 knots becoming southeast. a
chance of showers. waves 1 to 3 feet. 
.thursday...east winds 5 to 10 knots becoming southeast. a chance
of showers thursday night. waves 1 to 2 feet. 
.friday...south winds 10 to 15 knots becoming southwest. showers
likely during the day, then a chance of showers friday night.
waves 1 to 2 feet building to 2 to 4 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
343 am edt mon may 12 2025

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 ridge of high pressure averaging 30.20 inches builds east as low
pressure 29.90 inches over the lower mississippi valley moves
towards the mid-atlantic region. a trough averaging 30.00 inches
will persist across lake erie through wednesday. low pressure
29.30 inches will push east across the northern plains on thursday
and will lift a warm front northeast across the lake thursday
night into friday. the low 29.40 inches enters the great lakes
region while dragging a cold front east across lake erie on
friday night.


lez061-168-169-121415-
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-
343 am edt mon may 12 2025

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

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
343 am edt mon may 12 2025

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 ridge of high pressure averaging 30.20 inches builds east as low
pressure 29.90 inches over the lower mississippi valley moves
towards the mid-atlantic region. a trough averaging 30.00 inches
will persist across lake erie through wednesday. low pressure
29.30 inches will push east across the northern plains on thursday
and will lift a warm front northeast across the lake thursday
night into friday. the low 29.40 inches enters the great lakes
region while dragging a cold front east across lake erie on
friday night.


lez162-163-121415-
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-
343 am edt mon may 12 2025

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

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
343 am edt mon may 12 2025

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 ridge of high pressure averaging 30.20 inches builds east as low
pressure 29.90 inches over the lower mississippi valley moves
towards the mid-atlantic region. a trough averaging 30.00 inches
will persist across lake erie through wednesday. low pressure
29.30 inches will push east across the northern plains on thursday
and will lift a warm front northeast across the lake thursday
night into friday. the low 29.40 inches enters the great lakes
region while dragging a cold front east across lake erie on
friday night.


lez164>167-121415-
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-
343 am edt mon may 12 2025

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

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
348 am edt mon may 12 2025

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 of 30.40 inches slowly exits the 
eastern great lakes this morning, allowing an extended period of 
light southeast winds through wednesday. a large low pressure 
system lifting into the region will bring periods of showers and 
isolated thunderstorms tuesday and wednesday.


lhz363-462>464-121600-
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-
348 am edt mon may 12 2025

.today...southeast winds 5 to 10 knots backing to the east late
in the afternoon. waves 2 feet or less. 
.tonight...east winds 5 to 10 knots veering to the southeast
early in the morning. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots. a chance of showers in
the morning. waves 2 feet or less. 
.tuesday night...east winds 5 to 10 knots becoming southeast
10 to 15 knots in the late evening and overnight. waves 1 to
3 feet. 
.wednesday...east winds 5 to 10 knots. waves 1 to 3 feet. 
.thursday...southeast winds 5 to 10 knots increasing to 15 to
20 knots. a chance of thunderstorms early in the evening. rain
showers likely and a chance of thunderstorms in the late evening
and early morning. waves 1 to 3 feet building to 2 to 4 feet
until early morning. 
.friday...south winds 15 to 20 knots becoming southwest 10 to
15 knots in the late evening and early morning. showers likely
early in the morning...then a chance of showers. waves 3 to
5 feet. 


$$

fzus63 kdtx 120748 aaa
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open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
348 am edt mon may 12 2025

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 of 30.40 inches slowly exits the 
eastern great lakes this morning, allowing an extended period of 
light southeast winds through wednesday. a large low pressure 
system lifting into the region will bring periods of showers and 
isolated thunderstorms tuesday and wednesday.


lhz361-362-121600-
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-
348 am edt mon may 12 2025

.today...south winds 5 to 10 knots backing to the east late in
the afternoon. waves 1 to 3 feet. 
.tonight...east winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots backing to the east
early in the afternoon. waves 1 to 3 feet. 
.tuesday night...east winds 5 to 10 knots. waves 1 to 3 feet. 
.wednesday...east winds 5 to 10 knots. waves 1 to 3 feet. 
.thursday...east winds 5 to 10 knots increasing to 10 to
15 knots. a chance of thunderstorms early in the evening. rain
showers likely and a chance of thunderstorms in the late evening
and early morning. waves 1 to 3 feet building to 2 to 4 feet
until early morning. 
.friday...south winds 10 to 15 knots. a chance of showers. waves
3 to 5 feet. 


$$

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lake st clair forecast
national weather service detroit/pontiac mi
346 am edt mon may 12 2025

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 of 30.40 inches slowly exits the 
eastern great lakes this morning, allowing an extended period of 
light southeast winds through wednesday. a large low pressure 
system lifting into the region will bring periods of showers and 
isolated thunderstorms tuesday and wednesday.


lcz460-121600-
lake st clair-
346 am edt mon may 12 2025

.today...east winds 5 to 10 knots becoming southeast 10 to 15 knots
late in the afternoon. mostly sunny. waves 2 feet or less.
.tonight...southeast winds 5 to 10 knots. mostly cloudy with a
chance of light showers. waves 2 feet or less.
.tuesday...southeast winds 5 to 10 knots becoming east 10 to 15
knots early in the afternoon. mostly cloudy. a chance of light
showers in the afternoon. waves 2 feet or less.
.tuesday night...east winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. mostly cloudy. a chance of light showers in
the evening. waves 2 feet or less.
.wednesday...southeast winds 5 to 10 knots. mostly cloudy in the
morning...then partly cloudy with a chance of light showers in the
afternoon and evening. waves 2 feet or less.
.thursday...southeast winds 10 to 15 knots. partly cloudy. showers
likely and a chance of thunderstorms. waves 2 feet or less.
.friday...southwest winds 15 to 20 knots. mostly clear. showers
likely and a chance of thunderstorms. waves 1 to 3 feet.

$$