344
FZUS61 KBUF 052009
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
409 PM EDT SUN APR 5 2026
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 29.1 INCH LOW OVER QUEBEC WILL PUSH ITS TRAILING
SECONDARY AND TERTIARY COLD FRONTS ACROSS THE LAKE TONIGHT AND
MONDAY. A 30.5 INCH HIGH WILL BUILD ACROSS THE GREAT LAKES TUESDAY
AND TUESDAY NIGHT, BEFORE SLIDING EAST AND OFF THE NEW ENGLAND COAST
WEDNESDAY. A 29.6 INCH SURFACE LOW WILL THEN TRACK NORTHEAST ACROSS
ONTARIO AND QUEBEC, AND WILL EVENTUALLY SLIDE ITS TRAILING COLD
FRONT ACROSS THE LAKE THURSDAY NIGHT AND FRIDAY.
LOZ062-060300-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
409 PM EDT SUN APR 5 2026
TONIGHT
WEST WINDS 15 TO 25 KNOTS. WAVES 5 TO 8 FEET. WAVES
OCCASIONALLY AROUND 10 FEET.
MONDAY
WEST WINDS 15 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS.
A CHANCE OF RAIN AND SNOW SHOWERS LATE. WAVES 3 TO 5 FEET
SUBSIDING TO 1 TO 3 FEET.
MONDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS. SNOW SHOWERS WITH RAIN SHOWERS LIKELY IN THE EVENING,
THEN SNOW SHOWERS OVERNIGHT. WAVES 1 TO 2 FEET BUILDING TO 3 TO
6 FEET.
TUESDAY
NORTHWEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS LIKELY IN
THE MORNING. WAVES 3 TO 6 FEET SUBSIDING TO 2 TO 4 FEET.
TUESDAY NIGHT
NORTHWEST WINDS 15 TO 20 KNOTS BECOMING
SOUTHWEST 5 TO 15 KNOTS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET.
WEDNESDAY
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS. WAVES 2 FEET OR LESS BUILDING TO 2 TO 4 FEET.
THURSDAY
SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST. A
CHANCE OF SHOWERS. WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 4 FEET.
FRIDAY
SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING NORTHWEST. A
CHANCE OF SHOWERS. WAVES 1 TO 3 FEET.
LOZ063>065-060300-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
409 PM EDT SUN APR 5 2026
TONIGHT
WEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. WAVES 5 TO 9 FEET. WAVES OCCASIONALLY AROUND
11 FEET.
MONDAY
WEST WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO
15 KNOTS. A CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES 4 TO
7 FEET SUBSIDING TO 2 TO 4 FEET. WAVES OCCASIONALLY AROUND
9 FEET.
MONDAY NIGHT
WEST WINDS 10 TO 15 KNOTS BECOMING NORTHWEST AND
INCREASING TO 15 TO 25 KNOTS. SNOW SHOWERS. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 6 FEET.
TUESDAY
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST. SNOW
SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF SNOW SHOWERS IN
THE AFTERNOON. WAVES 4 TO 7 FEET SUBSIDING TO 3 TO 6 FEET. WAVES
OCCASIONALLY AROUND 9 FEET.
TUESDAY NIGHT
WEST WINDS 15 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTH WINDS 5 TO 10 KNOTS INCREASING TO 30 KNOTS.
WAVES 1 TO 3 FEET BUILDING TO 3 TO 6 FEET.
THURSDAY
SOUTH WINDS TO 30 KNOTS. A CHANCE OF RAIN SHOWERS
THURSDAY NIGHT. WAVES 4 TO 7 FEET SUBSIDING TO 3 TO 6 FEET. WAVES
OCCASIONALLY AROUND 9 FEET.
FRIDAY
SOUTH WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES 3 TO 6 FEET SUBSIDING
TO 1 TO 3 FEET.
LOZ061-060300-
MAFOR 0521/
ONTARIO WEST 1/2 14630 12620 12610. WAVES 5 TO 8 FEET, AND
OCCASIONALLY AROUND 10 FEET TONIGHT. WAVES 3 TO 5 FEET SUBSIDING
TO 1 TO 3 FEET MONDAY.
ONTARIO EAST 1/2 14630 12620 12610. WAVES 5 TO 9 FEET, AND
OCCASIONALLY AROUND 11 FEET TONIGHT. WAVES 4 TO 7 FEET SUBSIDING
TO 2 TO 4 FEET, AND OCCASIONALLY AROUND 9 FEET MONDAY.
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