650
FZUS61 KBUF 201019
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
619 AM EDT Mon May 20 2024

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 weak 29.9 moisture starved cold front will fade as
it drops across the area today. A 30.0 area of high pressure along
the Carolinas will hold firm along the coast through Tuesday then
drift out to sea Tuesday night. A 29.2 inch low near Lake
Superior Wednesday morning will send a cold front across the lake
Wednesday night into Thursday. A 30.0 inch high over the Upper
Mississippi valley on Thursday will build across the Great Lakes
region Thursday night and Friday.

LOZ062-201515-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
619 AM EDT Mon May 20 2024

.TODAY...Light and variable winds becoming east 5 to 10 knots.
Patchy fog this morning. Waves 1 foot or less.
.TONIGHT...Southeast winds 5 to 10 knots becoming light and
variable. Waves 1 foot or less.
.TUESDAY...South winds 10 knots or less becoming southwest 10 to
15 knots. Waves 2 feet or less.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots becoming south.
Waves 1 to 2 feet.
.WEDNESDAY...South winds 10 to 15 knots becoming southwest. A
chance of showers and thunderstorms during the day, then showers
likely with a chance of thunderstorms Wednesday night. Waves 1 to
3 feet.
.THURSDAY...Southwest winds 15 to 20 knots becoming west and
diminishing to around 10 knots. Showers likely during the day.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.FRIDAY...West winds 5 to 10 knots becoming north. Waves 1 to
2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-201515-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
619 AM EDT Mon May 20 2024

.TODAY...South winds less than 10 knots becoming northeast.
Patchy fog this morning. Waves 1 foot or less.
.TONIGHT...Southeast winds 10 knots or less becoming south. Waves
1 foot or less.
.TUESDAY...South winds 10 knots or less. Waves 1 foot or less.
.TUESDAY NIGHT...South winds 5 to 15 knots. Waves 2 feet or less.
.WEDNESDAY...South winds 5 to 15 knots becoming southwest. A
chance of showers and thunderstorms during the day, then showers
likely with a chance of thunderstorms Wednesday night. Waves
2 feet or less.
.THURSDAY...Southwest winds 10 to 15 knots becoming west. Showers
likely during the day. Waves 1 to 3 feet building to 2 to 4 feet,
then subsiding to 1 to 3 feet.
.FRIDAY...West winds 5 to 15 knots becoming north. Waves 1 to
3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-201515-
MAFOR 2009/
ONTARIO WEST 1/2 12600 11800 11100 11200 12300 11400. Waves 1
foot or less.

ONTARIO EAST 1/2 12400 11700 11100 11200 11300 12400. Waves 1
foot or less.

$$

AR