395
FZUS61 KBUF 070802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Mon Sep 7 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 will settle over the lower Great Lakes
today This high will then drift to the eastern seaboard Tuesday,
then east of the Mid Atlantic coast by Wednesday. Meanwhile, a 29.3
inch low over far northwest Ontario province Tuesday night will move
to Hudson Bay by late Wednesday, then to northern Quebec by Thursday
while deepening to 29.0 inches. A trailing cold front will cross the
lower Great Lakes Wednesday night. A 30.0 inch high will build
across the eastern Great Lakes region Thursday through Friday.

LOZ062-071500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Mon Sep 7 2026

.TODAY...Southwest winds 10 knots or less becoming west. Waves
1 foot or less.
.TONIGHT...Southwest winds 10 knots or less becoming west. Waves
1 foot or less.
.TUESDAY...West winds less than 10 knots. Waves 1 foot or less.
.TUESDAY NIGHT...East winds 5 to 10 knots becoming south. Waves
1 foot or less.
.WEDNESDAY...Southwest winds 15 to 25 knots becoming west.
Showers likely. Waves 1 to 3 feet building to 4 to 7 feet, then
subsiding to 3 to 6 feet. Waves occasionally around 9 feet.
.THURSDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.FRIDAY...Northwest winds 5 to 10 knots becoming south. Waves
1 to 3 feet.

$$

LOZ063>065-071500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Mon Sep 7 2026

.TODAY...Northwest winds 5 to 15 knots becoming west. Waves
2 feet or less.
.TONIGHT...West winds 5 to 15 knots. Waves 2 feet or less.
.TUESDAY...West winds 10 knots or less becoming north. Waves
1 foot or less.
.TUESDAY NIGHT...East winds 5 to 15 knots becoming south. Waves
2 feet or less.
.WEDNESDAY...South winds 15 to 25 knots becoming southwest.
Showers. Waves 1 to 3 feet building to 4 to 7 feet, then
subsiding to 3 to 6 feet. Waves occasionally around 9 feet.
.THURSDAY...West winds 15 to 20 knots becoming northwest. A
chance of showers during the day. Waves 4 to 7 feet subsiding to
3 to 5 feet. Waves occasionally around 9 feet.
.FRIDAY...Northwest winds 5 to 15 knots becoming south. Waves
2 to 4 feet subsiding to 1 to 3 feet.

$$

LOZ061-071500-
MAFOR 0709/
ONTARIO WEST 1/2 11500 15600 11600. Waves 1 foot or less.

ONTARIO EAST 1/2 12700 11600 12610 13600. Waves 2 feet or less.

$$