Great Lakes Forecast
Issued by NWS

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000
FZUS61 KBUF 220234
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
934 PM EST Wed Feb 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 29.9 inch low north of Maine will continue to move away from
our region overnight...while a 30.7 inch high will build across
the Great Lakes. This high will slowly drift east across the Saint
Lawrence Valley Thursday afternoon and night. A warm front will
push north across the lake on Friday. High pressure over the
northern plains Friday evening will build across Lake Ontario late
Friday night and Saturday. A deep storm system will track from
the central plains to the Upper Great Lakes Saturday night and
Sunday.

LOZ062-221015-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
934 PM EST Wed Feb 21 2018

.TONIGHT...Northwest winds 15 to 20 knots becoming north 10 to
15 knots. Waves 2 to 4 feet.
.THURSDAY...Northeast winds 10 to 15 knots becoming east 15 to
20 knots. A chance of snow early in the afternoon. Waves 1 to
3 feet.
.THURSDAY NIGHT...East winds 15 to 25 knots. Waves 3 to 5 feet.
.FRIDAY...East winds 15 to 25 knots becoming south and
diminishing to 5 to 10 knots in the afternoon. Rain. Waves 3 to
5 feet subsiding to 2 feet or less.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots becoming west.
Rain likely in the evening. Waves 2 feet or less.
.SATURDAY...Northwest winds 5 to 10 knots becoming east and
increasing to 15 to 25 knots. A chance of rain during the day,
then rain Saturday night. Waves building to 3 to 5 feet.
.SUNDAY...Southwest winds increasing to 30 knots. Rain showers.
Waves 3 to 6 feet.
.MONDAY...West winds 15 to 20 knots. Waves 3 to 6 feet.

$$

LOZ063>065-221015-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
934 PM EST Wed Feb 21 2018

.TONIGHT...West winds 15 to 20 knots becoming northeast 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.THURSDAY...Northeast winds 10 to 15 knots. A chance of snow
early in the afternoon. Waves 1 to 3 feet.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots becoming east
15 to 20 knots. Waves 2 to 4 feet.
.FRIDAY...Southeast winds 15 to 25 knots becoming south. A chance
of rain in the morning, then widespread rain in the afternoon.
Waves 2 to 4 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots becoming west.
Rain in the evening. Waves 1 to 3 feet.
.SATURDAY...Northwest winds 5 to 10 knots becoming east and
increasing to 15 to 25 knots. A chance of rain during the day,
then rain Saturday night. Waves building to 2 to 4 feet.
.SUNDAY...South winds 15 to 25 knots. Rain showers. Waves 4 to 7
feet. Waves occasionally around 9 feet.
.MONDAY...West winds 15 to 25 knots. Waves 4 to 7 feet. Waves
occasionally around 9 feet.

$$

LOZ061-221015-
MAFOR 2204/
ONTARIO WEST 1/2 11710 11810 11110 11220 12210 12220. A chance of
snow Thursday afternoon. Waves 2 to 4 feet subsiding to 1 to 3
feet overnight. Waves 1 to 3 feet Thursday. Waves 2 to 4 feet
Thursday evening.

ONTARIO EAST 1/2 11810 15110 11110. A chance of snow Thursday
afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet overnight.
Waves 1 to 3 feet Thursday and Thursday evening.

$$



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