Great Lakes Forecast
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000
FZUS61 KBUF 052050
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
450 PM EDT Sun Apr 5 2020

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 30.2 inch high over the Upper Great Lakes this
evening will cross the lake later tonight and Monday. After a the
passage of a subtle frontal boundary Monday night...another area
of high pressure will nose south across the lake from James Bay on
Tuesday. A 29.5 inch low over Lower Michigan Tuesday evening will
cross New York state late Tuesday night and Wednesday. A strong
cold front will cross the lake late Wednesday night or early
Thursday...as a deepening 29.1 inch low will cross the Ottawa
valley. The storm system will cross Maine to the Canadian
maritimes Thursday night and Friday.

LOZ062-060330-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
450 PM EDT Sun Apr 5 2020

.TONIGHT...West winds 15 to 20 knots becoming northwest 10 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.MONDAY...Northwest winds 5 to 10 knots becoming west. Waves
2 feet or less.
.MONDAY NIGHT...Southwest winds 5 to 10 knots becoming light and
variable. Waves 1 foot or less.
.TUESDAY...East winds 10 knots or less. A chance of showers in
the afternoon. Waves 1 foot or less.
.TUESDAY NIGHT...East winds 10 to 15 knots. Showers likely. Waves
1 to 3 feet.
.WEDNESDAY...Northeast winds 10 knots or less becoming southwest.
Showers likely. Waves 1 to 3 feet.
.THURSDAY...West winds 15 to 20 knots. Rain showers likely. Waves
building to 3 to 6 feet.
.FRIDAY...West winds 15 to 20 knots. Waves 4 to 7 feet. Waves
occasionally around 9 feet.

$$

LOZ063>065-060330-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
450 PM EDT Sun Apr 5 2020

.TONIGHT...West winds 15 to 20 knots becoming northwest 10 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.MONDAY...West winds 5 to 10 knots. Waves 1 to 3 feet.
.MONDAY NIGHT...Southwest winds 10 knots or less. Waves 2 feet or
less.
.TUESDAY...Southwest winds 10 knots or less becoming northeast.
Waves 1 foot or less.
.TUESDAY NIGHT...East winds 10 o 15 knots becoming northeast. A
chance of rain showers in the evening, then rain showers likely
overnight. Waves 1 to 3 feet.
.WEDNESDAY...Northeast winds 5 to 10 knots becoming south. Rain
showers likely. Waves 1 to 3 feet.
.THURSDAY...Southwest winds 15 to 20 knots becoming west. Rain
showers likely. Waves building to 5 to 8 feet. Waves occasionally
around 10 feet.
.FRIDAY...West winds 15 to 20 knots. A chance of rain and snow
showers. Waves 5 to 9 feet. Waves occasionally around 11 feet.

$$

LOZ061-060330-
MAFOR 0521/
ONTARIO WEST 1/2 11610 13710 11700 13600. Waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet tonight.
Waves 2 feet or less Monday.

ONTARIO EAST 1/2 13610 11710 11700 13600. Waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet tonight.
Waves 1 to 3 feet subsiding to 1 foot or less Monday.

$$



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