072
FZUS61 KBUF 210547
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
147 AM EDT Tue May 21 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...High pressure along the coast will remain fixed along
the coast today then drift out to sea tonight. A 29.3 inch low
near Lake Superior Wednesday morning will push 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 on Friday. High pressure will continue to nose
southwards across the lake on Saturday.

LOZ062-210930-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
147 AM EDT Tue May 21 2024

.OVERNIGHT...Southeast winds less than 10 knots. Waves
1 foot or less.
.TUESDAY...East winds 10 knots or less becoming southwest 10 to
15 knots. Waves 2 feet or less.
.TUESDAY NIGHT...West winds 5 to 15 knots becoming south less
than 10 knots. Waves 1 to 2 feet.
.WEDNESDAY...South winds 10 knots or less becoming southwest
10 to 15 knots. A chance of showers and thunderstorms in the
afternoon. Waves 1 to 2 feet building to 2 to 4 feet.
.WEDNESDAY NIGHT...Southwest winds 15 to 20 knots becoming west
10 to 15 knots. A chance of showers and thunderstorms in the
evening, then showers likely with a chance of thunderstorms
overnight. Waves 2 to 4 feet.
.THURSDAY...Southwest winds 5 to 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 northeast. Waves 1 to
2 feet.
.SATURDAY...East winds 5 to 10 knots becoming southeast. Waves
around 1 foot.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-210930-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
147 AM EDT Tue May 21 2024

.OVERNIGHT...South winds less than 10 knots. Waves 1 foot
or less.
.TUESDAY...South winds 5 to 15 knots. Waves 1 foot or less.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots. Waves 2 feet or
less.
.WEDNESDAY...South winds 10 knots or less. A chance of showers
and thunderstorms in the afternoon. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Showers likely
with a chance of thunderstorms. Waves 1 to 3 feet.
.THURSDAY...West winds 5 to 10 knots becoming southwest. Showers
likely with a chance of thunderstorms during the day. Waves 1 to
3 feet building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.FRIDAY...Southwest winds 5 to 15 knots becoming north. Waves
1 to 3 feet subsiding to 1 foot or less.
.SATURDAY...Northeast winds 5 to 10 knots becoming southeast.
Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-210930-
MAFOR 2103/
ONTARIO WEST 1/2 11300 11400 13300 11410 11610 11600. Waves 2
feet or less.

ONTARIO EAST 1/2 13400 12300 11400 11410 11500. Waves 1 foot or
less.

$$

AR