Great Lakes Forecast
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619
FZUS61 KBUF 060201
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1001 PM EDT Thu Jun 5 2025

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 cold front will stall out across Ohio and Pennsylvania
overnight. Several weak 29.6 inch waves of low pressure will then
ripple east along the stalled front Friday through Saturday, with
the final wave moving east across New England Saturday night. A weak
29.9 inch surface high will then ridge across the Lower Great Lakes
Sunday, before a 29.6 inch low slowly makes its way from the Upper
Great Lakes to Hudson Bay Monday and Tuesday.

LOZ062-060900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1001 PM EDT Thu Jun 5 2025

.OVERNIGHT...West winds less than 10 knots. Patchy fog
late. Waves 1 foot or less.
.FRIDAY...North winds less than 10 knots becoming northeast.
Waves 1 foot or less.
.FRIDAY NIGHT...Northeast winds 10 knots or less becoming
northwest. Waves 1 foot or less.
.SATURDAY...Northwest winds 5 to 10 knots becoming west. Waves
around 1 foot.
.SATURDAY NIGHT...Northwest winds 5 to 10 knots becoming east.
Waves around 1 foot.
.SUNDAY...East winds 5 to 15 knots becoming south. A chance of
showers Sunday night. Waves 1 to 3 feet.
.MONDAY...Southwest winds 10 to 15 knots. A chance of showers.
Waves 1 to 3 feet.
.TUESDAY...Southwest winds 10 to 15 knots becoming west. A chance
of showers. Waves 1 to 2 feet.

$$

LOZ063>065-060900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1001 PM EDT Thu Jun 5 2025

.OVERNIGHT...West winds less than 10 knots. Areas of fog
late. A chance of showers late. Waves 1 foot or less.
.FRIDAY...North winds less than 10 knots. Areas of fog early. A
chance of showers. Waves 1 foot or less.
.FRIDAY NIGHT...Northwest winds 10 knots or less becoming west. A
chance of showers. Waves 1 foot or less.
.SATURDAY...West winds 5 to 10 knots. Waves 2 feet or less.
.SATURDAY NIGHT...West winds 5 to 10 knots becoming east. Waves
2 feet or less.
.SUNDAY...East winds 5 to 15 knots becoming southeast. A chance
of showers Sunday night. Waves 1 to 3 feet.
.MONDAY...South winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers. Waves 1 to 3 feet.
.TUESDAY...South winds 10 to 15 knots becoming west. Showers
likely. Waves 1 to 2 feet.

$$

LOZ061-060900-
MAFOR 0603/
ONTARIO WEST 1/2 11600 11700 11800 14100 11800. Waves 1 foot or
less.

ONTARIO EAST 1/2 12600 14800 12700. A chance of showers Friday.
Waves 1 foot or less.

$$