590
FZUS61 KBUF 091402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM 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 then 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 moves into southern Quebec by Wednesday evening. Another
warm front will cross the Lake Thursday night ahead of a 29.7 inch
trough that will cross the Lake later Friday, while also sending an
attendant cold front across the Lake Friday afternoon and Friday
night.

LOZ062-092100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Tue Jun 9 2026

.THIS AFTERNOON...East winds 5 to 10 knots. A chance of showers
and thunderstorms late. Waves 1 foot or less.
.TONIGHT...East winds 5 to 15 knots becoming southeast. A chance
of showers and thunderstorms through the early overnight, then
showers likely with a chance of thunderstorms late. 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 15 knots. A chance of
showers and thunderstorms in the evening, then showers likely
overnight. Waves 1 to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. Showers likely during
the day, then a chance of showers Thursday night. Waves 1 to
2 feet.
.FRIDAY...Southwest winds 10 to 15 knots becoming west. Showers
likely with a chance of thunderstorms. Waves 1 to 3 feet.
.SATURDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-092100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EDT Tue Jun 9 2026

.THIS AFTERNOON...Southeast winds 5 to 10 knots becoming
northeast. A chance of showers and thunderstorms late. Waves
2 feet or less.
.TONIGHT...Northeast winds 5 to 15 knots becoming southeast. A
chance of showers and thunderstorms early, then a chance of
showers. A chance of showers and thunderstorms late. Waves 1 foot
or less.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming south.
Showers with a chance of thunderstorms. Waves 2 feet or less.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Showers likely
with a chance of thunderstorms in the evening, then showers
likely overnight. Waves 2 feet or less.
.THURSDAY...Southwest winds 5 to 10 knots. Showers likely during
the day, then a chance of showers Thursday night. Waves 2 feet or
less.
.FRIDAY...South winds 5 to 15 knots becoming west. Showers with a
chance of thunderstorms. Waves 2 feet or less.
.SATURDAY...West winds 5 to 15 knots. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-092100-
MAFOR 0915/
ONTARIO WEST 1/2 12200 11210 13300 11406 11410. A chance of
thunderstorms overnight and Wednesday morning. Waves 2 feet or
less.

ONTARIO EAST 1/2 11400 11100 11110 11200 12300 11310 11416. Waves
2 feet or less.

$$