811
FZUS61 KBUF 151630
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1230 PM EDT Mon Jul 15 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 29.5 inch compact low will cross the lake this
afternoon and evening, followed by a weak 29.9 inch surface high
ridging over the Lake tonight. Another 29.5 inch compact low will
cross the Lake on Tuesday. A 29.7 inch cold frontal boundary over
the upper Great Lakes on Tuesday will push across the Lake late
Tuesday night and Wednesday morning. A sprawling 30.2 inch high
over the northern plains Wednesday evening will build across the
entire Great Lakes region late Wednesday night through Friday.

LOZ062-152100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1230 PM EDT Mon Jul 15 2024

...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

.THIS AFTERNOON...Southwest winds 5 to 10 knots becoming west.
Showers and thunderstorms. Some thunderstorms may be severe with
strong winds and large hail. Waves around 2 feet.
.TONIGHT...West winds 5 to 15 knots becoming southwest. Showers
and thunderstorms likely early. A chance of showers late. Some
thunderstorms may be severe with strong winds and large hail
early. Waves 1 to 3 feet.
.TUESDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots. Showers and thunderstorms. Some thunderstorms may
produce gusty winds. Waves 2 to 4 feet.
.TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west
10 to 15 knots. A chance of showers overnight. Waves 2 to 4 feet
subsiding to 1 to 2 feet.
.WEDNESDAY...West winds 10 to 15 knots becoming northwest. A
chance of showers during the day. Waves 1 to 3 feet.
.THURSDAY...Northwest winds 10 to 15 knots becoming north. Waves
1 to 2 feet.
.FRIDAY...Northwest winds 5 to 10 knots becoming southwest. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-152100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1230 PM EDT Mon Jul 15 2024

...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

.THIS AFTERNOON...Southwest winds 5 to 10 knots becoming west.
Showers and thunderstorms likely. Some thunderstorms may be
severe with strong winds and large hail. Waves 1 to 2 feet.
.TONIGHT...West winds 5 to 15 knots becoming southwest. Showers
and thunderstorms likely in the evening. Some thunderstorms may be
severe with strong winds and large hail in the evening. Waves 1
to 2 feet.
.TUESDAY...South winds 10 to 15 knots becoming southwest 15 to
20 knots. Showers and thunderstorms. Some thunderstorms may
produce gusty winds. Waves 1 to 3 feet building to 2 to 4 feet.
.TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west
10 to 15 knots. A chance of showers overnight. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 10 to 15 knots becoming northwest. A
chance of showers during the day. Waves 1 to 3 feet.
.THURSDAY...Northwest winds 5 to 15 knots. Waves 1 to 3 feet.
.FRIDAY...Northwest winds 5 to 10 knots becoming southwest. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-152100-
MAFOR 1515 AMD/
ONTARIO WEST 1/2...SEVERE THUNDERSTORM WATCH IN EFFECT...11509
12609 11600 12510 12519. Waves 1 to 3 feet.

ONTARIO EAST 1/2...SEVERE THUNDERSTORM WATCH IN EFFECT...11500
11509 11809 11509 11600 12510 11419. Waves 1 to 3 feet.

$$

JJR