FZUS61 KBUF 092002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Tue Jun 9 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 30.2 inch high near the Delmarva will track offshore
this afternoon, where it will remain anchored through Wednesday.
Meanwhile, a 29.8 inch low over Lower Michigan this afternoon will
slowly track northeast into southeastern Ontario by Wednesday
morning while sending an attendant warm front across the Lake, then
weakens while moving into southern Quebec Wednesday evening. Another
warm front will cross the Lake Thursday night in advance of a 29.7
inch trough that will cross the Lake later Friday, which will also
send an attendant cold front across the Lake Friday afternoon and
evening. A 30.0 inch high will then ridge across the Lake later
Friday night through Sunday morning, before the next cold front
crosses the Lake later Sunday or Sunday night.

LOZ062-100300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Tue Jun 9 2026

.TONIGHT...Southeast winds 5 to 15 knots. A chance of showers and
thunderstorms early, then showers with a chance of thunderstorms
from late evening on. Waves 1 foot or less.
.WEDNESDAY...South winds 10 to 15 knots becoming southwest.
Showers likely with a chance of thunderstorms early, then a
chance of showers and thunderstorms late in the morning. Waves
2 feet or less.
.WEDNESDAY NIGHT...West winds 5 to 15 knots becoming southwest.
Showers likely with a chance of thunderstorms overnight. Waves
1 to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. Showers likely. Waves
1 to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves 1 to
2 feet.
.FRIDAY...Southwest winds 15 to 20 knots becoming west 5 to
15 knots. Showers likely with a chance of thunderstorms. Waves
1 to 3 feet.
.SATURDAY...West winds 5 to 15 knots becoming southwest. Waves
1 to 2 feet.
.SUNDAY...Southwest winds 5 to 10 knots becoming west. A chance
of showers. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-100300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Tue Jun 9 2026

.TONIGHT...East winds 10 to 15 knots becoming southeast 10 knots
or less. A chance of showers and thunderstorms early, then
showers likely with a chance of thunderstorms from late evening
on. Waves 1 foot or less.
.WEDNESDAY...South winds 5 to 15 knots becoming southwest.
Showers likely with a chance of thunderstorms. Waves 2 feet or
less.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. A chance of
showers and thunderstorms in the evening, then showers likely
with a chance of thunderstorms overnight. Waves 2 feet or less.
.THURSDAY...Southwest winds 5 to 10 knots. Showers likely with a
chance of thunderstorms in the morning, then a chance of showers
and thunderstorms in the afternoon. Waves 2 feet or less.
.THURSDAY NIGHT...Southwest winds 10 knots or less. A chance of
showers and thunderstorms in the evening. Waves 2 feet or less.
.FRIDAY...South winds 5 to 15 knots becoming west. Showers with a
chance of thunderstorms. Waves 1 foot or less building to 1 to
3 feet.
.SATURDAY...West winds 5 to 15 knots becoming southwest. Waves
1 to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots becoming west. A chance
of showers. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-100300-
MAFOR 0921/
ONTARIO WEST 1/2 11310 11300 12306 11400 11410 11500 11510. A
chance of thunderstorms this evening and Wednesday morning. Waves
2 feet or less.

ONTARIO EAST 1/2 11110 12400 11406 11306 11416 11400 11500. A
chance of thunderstorms this evening and Wednesday afternoon.
Waves 2 feet or less.

$$