Great Lakes Forecast
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000
FZUS61 KBUF 150830
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
430 AM EDT Sun Apr 15 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 frontal boundary will remained stalled just to the south of the
lake today before finally moving north across the lake tonight,
as a 29.6 inch low moves to near Lake Erie. This low will move to
southern Quebec by Monday and drift over southern Canada and
northern New England Tuesday. A deep 29.2 inch low will enter the
Great Lakes region Wednesday, sending a warm front across Lake
Ontario Wednesday afternoon, followed by a cold front Wednesday
night or early Thursday.

LOZ063-151515-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
430 AM EDT Sun Apr 15 2018

...GALE WARNING IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...Northeast gales to 35 knots becoming east. Freezing
rain, rain and sleet this morning, then rain this afternoon.
Waves 10 to 15 feet. Waves occasionally around 19 feet.
.TONIGHT...East gales to 35 knots diminishing to 30 knots. Rain
likely early, then rain with a chance of thunderstorms from late
evening on. Waves 10 to 14 feet. Waves occasionally around
18 feet.
.MONDAY...East winds to 30 knots becoming southeast and
diminishing to 10 knots or less in the afternoon. Rain with a
chance of thunderstorms in the morning, then rain in the
afternoon. Waves 7 to 10 feet subsiding to 1 to 2 feet. Waves
occasionally around 13 feet.
.MONDAY NIGHT...West winds 15 to 25 knots increasing to 30 knots.
Rain showers likely in the evening, then a chance of rain showers
overnight. Waves 1 to 3 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.TUESDAY...West winds to 30 knots. A chance of rain showers.
Waves 6 to 10 feet. Waves occasionally around 13 feet.
.WEDNESDAY...West winds 15 to 20 knots diminishing to 10 knots or
less. A chance of rain showers Wednesday night. Waves 4 to 7 feet
subsiding to 2 feet or less. Waves occasionally around 9 feet.
.THURSDAY...West winds 5 to 15 knots becoming north. A chance of
rain and snow showers. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ062-151515-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
430 AM EDT Sun Apr 15 2018

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.TODAY...East gales to 40 knots. Freezing rain and sleet early,
then rain and freezing rain late this morning. Rain this
afternoon. Waves 13 to 17 feet. Waves occasionally around
22 feet.
.TONIGHT...East gales to 40 knots diminishing to 30 knots. Rain
early, then rain with a chance of thunderstorms from late evening
on. Waves 13 to 18 feet subsiding to 12 to 16 feet. Waves
occasionally around 23 feet.
.MONDAY...East winds 15 to 25 knots becoming southwest and
diminishing to 5 to 15 knots. Rain with a chance of thunderstorms
in the morning, then rain likely in the afternoon. Waves 8 to
11 feet subsiding to 1 to 3 feet. Waves occasionally around
14 feet.
.MONDAY NIGHT...West winds 15 to 25 knots increasing to 30 knots.
A chance of rain showers. Waves 2 to 3 feet building to 3 to
6 feet.
.TUESDAY...West winds to 30 knots diminishing to 15 to 25 knots.
A chance of rain showers. Waves 5 to 8 feet. Waves occasionally
around 10 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming southwest and
diminishing to 10 knots or less. A chance of rain showers
Wednesday night. Waves 3 to 6 feet subsiding to 1 foot or less.
.THURSDAY...West winds 5 to 15 knots becoming north. A chance of
rain and snow showers. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ064-065-151515-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
430 AM EDT Sun Apr 15 2018

...GALE WARNING IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...Northeast gales to 35 knots becoming east and
diminishing to 30 knots this afternoon. Freezing rain, sleet and
rain this morning, then rain and freezing rain this afternoon.
Waves 6 to 10 feet subsiding to 5 to 8 feet. Waves occasionally
around 13 feet.
.TONIGHT...East winds to 30 knots. A chance of rain and freezing
rain likely early, then rain. Rain with a chance of thunderstorms
late. Waves 5 to 8 feet. Waves occasionally around 10 feet.
.MONDAY...Southeast winds to 30 knots becoming northwest and
diminishing to less than 10 knots in the afternoon. Rain with a
chance of thunderstorms. Waves 5 to 8 feet subsiding to 2 feet or
less. Waves occasionally around 10 feet.
.MONDAY NIGHT...West winds 5 to 10 knots becoming southwest and
increasing to 15 to 25 knots overnight. Rain showers. Waves
2 feet or less building to 4 to 7 feet. Waves occasionally around
9 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west. Rain
showers likely during the day, then a chance of rain and snow
showers Tuesday night. Waves 6 to 10 feet. Waves occasionally
around 13 feet.
.WEDNESDAY...West winds 15 to 20 knots becoming southwest and
diminishing to 10 knots or less. A chance of rain showers
Wednesday night. Waves 5 to 8 feet subsiding to 2 feet or less.
Waves occasionally around 10 feet.
.THURSDAY...West winds 5 to 15 knots becoming north. A chance of
rain and snow showers. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-151515-
MAFOR 1509/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...11250 13256 11250
13256. Chance of light freezing rain and light sleet early this
morning. Chance of thunderstorms tonight. Waves 12 to 17 feet,
and occasionally around 22 feet today. Waves 13 to 18 feet
subsiding to 12 to 16 feet, and occasionally around 23 feet
tonight.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11150 11156 11246
13240 12246. Chance of light freezing rain and light sleet early
this morning. Chance of rain this evening, then chance of
thunderstorms overnight. Waves 10 to 14 feet subsiding to 8 to 11
feet, and occasionally around 18 feet today. Waves 8 to 12 feet
subsiding to 8 to 11 feet, and occasionally around 16 feet
tonight.

$$



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