Great Lakes Forecast
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000
FZUS61 KBUF 211431
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1031 AM EDT Mon May 21 2018

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 30.3 inch high across the lower Great Lakes today will drift
off the southern New England coast tonight. A weak 29.9 inch low
will then move across Lake Erie late tonight and across New York
ont Tuesday. A 30.1 inch high will then build into the Great Lakes
Wednesday and Thursday before drifting off the southern New
England coast Friday.

LOZ062-212130-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1031 AM EDT Mon May 21 2018

.THIS AFTERNOON...West winds 10 knots or less becoming northwest.
Waves 1 foot or less.
.TONIGHT...Northeast winds 10 knots or less becoming east and
increasing to 15 to 20 knots after midnight. Showers developing
after midnight along with a chance of thunderstorms. Waves 1 foot
or less building to 1 to 3 feet.
.TUESDAY...East winds 15 to 20 knots becoming northwest 5 to
15 knots. Showers with a chance of thunderstorms in the morning,
then a chance of showers in the afternoon. Waves 2 to 4 feet.
.TUESDAY NIGHT...West winds 5 to 10 knots. A chance of showers in
the evening. Waves 1 to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming northwest. Waves
1 to 3 feet.
.THURSDAY...Northwest winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.FRIDAY...Southwest winds 5 to 10 knots. A chance of showers
Friday night. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-212130-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1031 AM EDT Mon May 21 2018

.THIS AFTERNOON...West winds 5 to 10 knots. Waves 1 foot or less.
.TONIGHT...Northeast winds 10 knots or less becoming southeast.
Showers developing late along with a chance of thunderstorms.
Waves 1 foot or less.
.TUESDAY...East winds 15 to 20 knots becoming west 10 to
15 knots. Showers with a chance of thunderstorms in the morning,
then showers likely in the afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. A chance of showers in
the evening. Waves 2 feet or less.
.WEDNESDAY...West winds 10 to 15 knots becoming north 5 to
10 knots. Waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.THURSDAY...Northwest winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.FRIDAY...Southwest winds 5 to 10 knots. A chance of showers
Friday night. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-212130-
MAFOR 2115/
ONTARIO WEST 1/2 11600 11700 11800 12200 11216 12226. A chance of
thunderstorms overnight and Tuesday morning. Waves 1 foot or less
this afternoon. Waves 1 foot or less building to 1 to 3 feet
tonight. Waves 2 to 4 feet Tuesday morning.

ONTARIO EAST 1/2 12600 11700 11200 12300 11206 11216. A chance of
thunderstorms overnight and Tuesday morning. Waves 1 foot or less
this afternoon and tonight. Waves 1 to 3 feet Tuesday morning.

$$



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