Great Lakes Forecast
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278
FZUS61 KBUF 201403
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1003 AM EDT Tue Aug 20 2019

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 30.0 inch high will build eastward toward the Finger
Lakes this afternoon. A strong cold front over the Upper Great
Lakes will plow across lake Ontario Wednesday afternoon and evening.
An expansive 30.3 inch high centered over northern Ontario
Thursday morning will build across all of the Great Lakes Thursday
afternoon through Friday.

LOZ062-202115-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1003 AM EDT Tue Aug 20 2019

.THIS AFTERNOON...Southeast winds 10 knots or less becoming east.
Waves 1 foot or less.
.TONIGHT...East winds 10 knots or less becoming south. Waves
1 foot or less.
.WEDNESDAY...Southwest winds 10 knots or less increasing to 10 to
15 knots. A chance of showers and thunderstorms in the morning,
then showers and thunderstorms likely in the afternoon. Some
thunderstorms may produce gusty winds. Waves 2 feet or less.
.WEDNESDAY NIGHT...West winds 10 to 15 knots becoming northwest
15 to 20 knots. A chance of showers and thunderstorms in the
evening. Waves building to 3 to 5 feet.
.THURSDAY...Northwest winds 15 to 20 knots. Waves 3 to 5 feet.
.FRIDAY...Northwest winds 10 to 15 knots. Waves 1 to 2 feet.
.SATURDAY...Northeast winds 10 knots or less. Waves 1 foot or
less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-202115-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1003 AM EDT Tue Aug 20 2019

.THIS AFTERNOON...South winds 10 knots or less becoming east.
Waves 1 foot or less.
.TONIGHT...East winds 10 to 15 knots becoming south. Waves 1 foot
or less.
.WEDNESDAY...South winds 10 to 15 knots becoming southwest. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon. Some thunderstorms may
produce gusty winds. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots becoming
northwest 15 to 20 knots. Showers and thunderstorms likely in the
evening, then a chance of showers overnight. Some thunderstorms
may produce gusty winds. Waves building to 3 to 5 feet.
.THURSDAY...Northwest winds 15 to 20 knots. A chance of showers.
Waves 3 to 5 feet.
.FRIDAY...Northwest winds 10 to 15 knots. Waves 1 to 3 feet.
.SATURDAY...Northeast winds 5 to 10 knots. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-202115-
MAFOR 2015/
ONTARIO WEST 1/2 13200 12300 11400 12500. A chance of showers and
thunderstorms Wednesday morning. Waves 1 foot or less.

ONTARIO EAST 1/2 12300 12200 11300 13410. A chance of showers and
thunderstorms Wednesday morning. Waves 1 foot or less.

$$



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