366
FZUS61 KBUF 181402
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
1002 AM 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.
LOZ062-182100-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
1002 AM EDT THU SEP 18 2025
THIS AFTERNOON
WEST WINDS 5 TO 10 KNOTS BECOMING SOUTHWEST.
WAVES 1 FOOT OR LESS.
TONIGHT
WEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST. A CHANCE
OF SPRINKLES AFTER MIDNIGHT. 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 5 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS. WAVES 2 FEET OR LESS BUILDING TO 3 TO 5 FEET.
SATURDAY
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
SOUTHWEST WINDS 10 TO 15 KNOTS. A CHANCE OF SHOWERS.
WAVES 1 TO 2 FEET.
LOZ063>065-182100-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
1002 AM EDT THU SEP 18 2025
THIS AFTERNOON
WEST WINDS 5 TO 10 KNOTS. WAVES 2 FEET OR LESS.
TONIGHT
WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 15 TO
20 KNOTS. A CHANCE OF SPRINKLES FROM LATE EVENING ON. 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 10 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 BECOMING SOUTHEAST
10 TO 15 KNOTS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
SUNDAY
SOUTHEAST WINDS 15 TO 20 KNOTS BECOMING SOUTH. WAVES
1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
MONDAY
SOUTH WINDS 15 TO 20 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS. A CHANCE OF SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET.
LOZ061-182100-
MAFOR 1815/
ONTARIO WEST 1/2 13600 11700 11810 13110. WAVES 2 FEET OR LESS
THIS AFTERNOON. WAVES 1 TO 3 FEET TONIGHT AND FRIDAY MORNING.
ONTARIO EAST 1/2 13600 11700 14810. WAVES 2 FEET OR LESS THIS
AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET TONIGHT.
WAVES 2 TO 4 FEET FRIDAY MORNING.
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