933
FZUS61 KBUF 182002
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
402 PM EDT THU SEP 18 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
HIGH PRESSURE AVERAGING 30.0 INCHES DRAPED FROM THE OHIO
VALLEY TO NEW ENGLAND WILL GRADUALLY WEAKEN IN PLACE TODAY. A WEAK
COLD FRONT WILL THEN CROSS THE LAKE THIS EVENING, WITH ANOTHER 30.4
INCH HIGH THEN SETTLING FROM CENTRAL ONTARIO TO NEW ENGLAND FRIDAY
THROUGH SATURDAY NIGHT, THEN OFF THE NEW ENGLAND COAST SUNDAY AND
MONDAY.
LOZ062-190300-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
402 PM EDT THU SEP 18 2025
TONIGHT
NORTHWEST WINDS 10 TO 15 KNOTS BECOMING NORTHEAST.
WAVES 1 TO 3 FEET.
FRIDAY
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST LESS THAN
10 KNOTS. WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT OR LESS.
FRIDAY NIGHT
EAST WINDS 10 KNOTS OR LESS INCREASING TO 15 TO
20 KNOTS OVERNIGHT. WAVES 2 FEET OR LESS BUILDING TO 3 TO 5 FEET.
SATURDAY
EAST WINDS 15 TO 20 KNOTS. WAVES 3 TO 5 FEET.
SATURDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. WAVES 3 TO 5 FEET
SUBSIDING TO 2 TO 4 FEET.
SUNDAY
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH. A CHANCE
OF SHOWERS SUNDAY NIGHT. WAVES 1 TO 3 FEET.
MONDAY
SOUTH WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST. A CHANCE
OF SHOWERS. WAVES 1 TO 2 FEET.
TUESDAY
WEST WINDS 5 TO 10 KNOTS BECOMING NORTH. A CHANCE OF
SHOWERS. WAVES 1 TO 2 FEET.
LOZ063>065-190300-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
402 PM EDT THU SEP 18 2025
TONIGHT
WEST WINDS 10 TO 15 KNOTS BECOMING NORTH 15 TO
20 KNOTS. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
FRIDAY
NORTH WINDS 15 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
FRIDAY NIGHT
NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
15 TO 20 KNOTS. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
SATURDAY
NORTHEAST WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO
15 KNOTS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
SATURDAY NIGHT
NORTHEAST WINDS 10 TO 15 KNOTS BECOMING
SOUTHEAST 15 TO 20 KNOTS. WAVES 1 TO 3 FEET.
SUNDAY
SOUTHEAST WINDS 15 TO 20 KNOTS BECOMING SOUTH. A CHANCE
OF SHOWERS SUNDAY NIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET.
MONDAY
SOUTH WINDS 15 TO 20 KNOTS BECOMING SOUTHWEST AND
DIMINISHING TO 5 TO 10 KNOTS. A CHANCE OF SHOWERS. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING WEST. A CHANCE
OF SHOWERS. WAVES 2 FEET OR LESS.
LOZ061-190300-
MAFOR 1821/
ONTARIO WEST 1/2 11600 11710 11810 13110 12100. WAVES 1 TO 3
FEET.
ONTARIO EAST 1/2 11600 11710 13820 11810 12800. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET TONIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1
TO 3 FEET FRIDAY.
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