300
FZUS61 KBUF 060809
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
409 AM EDT MON APR 6 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 A COLD FRONT
ACROSS THE LAKE TODAY. 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, EVENTUALLY PUSHING ITS TRAILING
COLD FRONT ACROSS THE LAKE THURSDAY NIGHT AND FRIDAY.
LOZ062-061500-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
409 AM EDT MON APR 6 2026
TODAY
WEST WINDS 15 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS.
WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 2 FEET.
TONIGHT
WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST AND
INCREASING TO 15 TO 25 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS
EARLY, THEN SNOW SHOWERS LIKELY WITH A CHANCE OF RAIN SHOWERS
LATE IN THE EVENING. SNOW SHOWERS LIKELY AFTER MIDNIGHT. WAVES
1 TO 2 FEET BUILDING TO 3 TO 6 FEET.
TUESDAY
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
15 KNOTS. SNOW SHOWERS LIKELY IN THE MORNING. WAVES 4 TO 6 FEET
SUBSIDING TO 1 TO 3 FEET.
TUESDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
LESS THAN 10 KNOTS. WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT OR
LESS.
WEDNESDAY
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS. WAVES 2 FEET OR LESS BUILDING TO 2 TO 3 FEET.
THURSDAY
SOUTH WINDS 15 TO 20 KNOTS BECOMING SOUTHWEST. A
CHANCE OF SHOWERS THURSDAY NIGHT. WAVES 2 TO 4 FEET.
FRIDAY
SOUTHWEST WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. A CHANCE OF SHOWERS. WAVES 1 TO 3 FEET.
LOZ063>065-061500-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
409 AM EDT MON APR 6 2026
TODAY
WEST WINDS 15 TO 20 KNOTS DIMINISHING TO AROUND
10 KNOTS. A CHANCE OF SNOW SHOWERS THIS MORNING. WAVES 5 TO
8 FEET SUBSIDING TO 2 TO 4 FEET. WAVES OCCASIONALLY AROUND
10 FEET.
TONIGHT
WEST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST AND
INCREASING TO 15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW
SHOWERS LATE IN THE EVENING. SNOW SHOWERS LIKELY AFTER MIDNIGHT.
WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET.
TUESDAY
NORTH 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 2 TO 4 FEET. WAVES
OCCASIONALLY AROUND 9 FEET.
TUESDAY NIGHT
WEST WINDS 15 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
WEDNESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING SOUTH AND
INCREASING TO 15 TO 25 KNOTS. WAVES 1 TO 3 FEET BUILDING TO 3 TO
5 FEET.
THURSDAY
SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 30 KNOTS. A
CHANCE OF RAIN SHOWERS THURSDAY NIGHT. WAVES 3 TO 6 FEET BUILDING
TO 4 TO 7 FEET. WAVES OCCASIONALLY AROUND 9 FEET.
FRIDAY
SOUTH WINDS 15 TO 20 KNOTS BECOMING WEST 5 TO 15 KNOTS.
A CHANCE OF SHOWERS. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET.
LOZ061-061500-
MAFOR 0609/
ONTARIO WEST 1/2 12620 11610 12600 11610 11720 11737. A CHANCE OF
RAIN SHOWERS THIS EVENING. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 3
FEET TODAY. WAVES 1 TO 2 FEET BUILDING TO 3 TO 5 FEET TONIGHT.
ONTARIO EAST 1/2 11630 12620 11610 12600 11710 11727. WAVES 5 TO
8 FEET SUBSIDING TO 2 TO 4 FEET, AND OCCASIONALLY AROUND 10 FEET
TODAY. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET TONIGHT.
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