Great Lakes Forecast
Issued by NWS

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670
FZUS61 KBUF 161502
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EST Sun Nov 16 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...Low pressure will deepen further to 28.8 inches over
northern New England today before moving to the Canadian Maritimes
Monday, then north to Labrador Tuesday. A 30.3 inch high will then
build from the upper Great Lakes Tuesday to the lower Great Lakes
Wednesday, then to New England Thursday.

LOZ062-162200-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...Northwest gales to 35 knots. A chance of rain
showers, then lake effect rain and snow showers likely late.
Waves 10 to 14 feet. Waves occasionally around 18 feet.
.TONIGHT...Northwest winds to 30 knots. A chance of snow and rain
showers early, then a chance of snow showers from late evening
on. Waves 7 to 11 feet subsiding to 6 to 9 feet. Waves
occasionally around 14 feet.
.MONDAY...Northwest winds to 30 knots becoming west. A chance of
snow showers. Waves 5 to 9 feet. Waves occasionally around
11 feet.
.MONDAY NIGHT...West winds 15 to 25 knots becoming northwest.
Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally
around 9 feet.
.TUESDAY...Northwest winds 15 to 20 knots becoming northeast 5 to
15 knots. Waves 2 to 4 feet subsiding to 1 foot or less.
.WEDNESDAY...East winds 5 to 10 knots. Waves 1 foot or less.
.THURSDAY...Northeast winds 10 knots or less becoming southeast
10 to 15 knots. Showers Thursday night. Waves 2 feet or less.

$$

LOZ063-162200-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 AM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...Northwest gales to 35 knots. A chance of rain
showers late this morning. A chance of rain and snow showers
late. Waves 12 to 16 feet. Waves occasionally around 20 feet.
.TONIGHT...Northwest gales to 35 knots diminishing to 30 knots. A
chance of snow and rain showers early. Waves 10 to 14 feet
subsiding to 8 to 11 feet. Waves occasionally around 18 feet.
.MONDAY...Northwest winds to 30 knots becoming west. A chance of
snow showers in the morning, then a chance of rain and snow
showers in the afternoon. Waves 7 to 11 feet. Waves occasionally
around 14 feet.
.MONDAY NIGHT...Northwest winds to 30 knots diminishing to 15 to
20 knots. A chance of rain and snow showers in the evening, then
a chance of rain showers overnight. Waves 6 to 10 feet subsiding
to 5 to 8 feet. Waves occasionally around 13 feet.
.TUESDAY...Northwest winds 15 to 20 knots diminishing to 5 to
15 knots. Waves 3 to 6 feet subsiding to 1 to 3 feet.
.WEDNESDAY...East winds 5 to 10 knots becoming southeast. Waves
1 foot or less.
.THURSDAY...East winds 10 knots or less becoming southeast and
increasing to 15 to 20 knots. Showers likely Thursday night.
Waves 1 foot or less building to 1 to 3 feet.

$$

LOZ064-065-162200-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 AM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...Northwest gales to 35 knots. A chance of rain
showers late this morning. A chance of rain and snow showers
late. Waves 12 to 16 feet. Waves occasionally around 20 feet.
.TONIGHT...Northwest gales to 35 knots. A chance of snow and rain
showers early, then a chance of snow showers from late evening
on. Waves 10 to 15 feet subsiding to 8 to 11 feet. Waves
occasionally around 19 feet.
.MONDAY...Northwest winds to 30 knots becoming west. A chance of
snow showers in the morning. Waves 7 to 11 feet. Waves
occasionally around 14 feet.
.MONDAY NIGHT...Northwest winds to 30 knots diminishing to 15 to
25 knots. Waves 6 to 10 feet subsiding to 5 to 8 feet. Waves
occasionally around 13 feet.
.TUESDAY...Northwest winds 15 to 20 knots becoming north 5 to
15 knots. Waves 4 to 7 feet subsiding to 2 feet or less. Waves
occasionally around 9 feet.
.WEDNESDAY...East winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.THURSDAY...Southeast winds 5 to 10 knots increasing to 15 to
20 knots. A chance of rain showers during the day, then rain
showers likely Thursday night. Waves 1 foot or less building to
1 to 3 feet.

$$

LOZ061-162200-
MAFOR 1616/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...12750 14740 11740
11730. A chance of rain showers late this morning, then a chance
of rain and snow showers this afternoon. A chance of snow and
rain showers this evening, then a chance of snow showers
overnight. A chance of snow showers Monday morning. Waves 10 to
15 feet, and occasionally around 19 feet this afternoon. Waves 8
to 12 feet subsiding to 7 to 10 feet, and occasionally around 15
feet tonight. Waves 6 to 9 feet, and occasionally around 11 feet
Monday morning.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...14750 14740. Waves 12
to 16 feet, and occasionally around 20 feet this afternoon. Waves
10 to 15 feet subsiding to 8 to 11 feet, and occasionally around
19 feet tonight. Waves 7 to 11 feet, and occasionally around 14
feet Monday morning.

$$