732
FZUS61 KBUF 212003
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
403 PM EDT SAT MAR 21 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 30.1 INCH HIGH WILL BUILD ACROSS THE LAKE TODAY. A
29.6 INCH LOW WILL THEN CROSS THE LOWER GREAT LAKES SUNDAY BEFORE
SLIDING OFF THE MID-ATLANTIC COAST MONDAY. A 30.4 INCH HIGH IS
FORECAST TO BUILD ACROSS THE UPPER GREAT LAKES MONDAY, THEN MOVE TO
THE LOWER GREAT LAKES TUESDAY WHILE STRENGTHENING TO 30.5 INCHES. A
29.8 INCH LOW TRACKING ACROSS QUEBEC WILL THEN PUSH ITS ASSOCIATED
COLD FRONT ACROSS THE LAKE ON WEDNESDAY.
LOZ062-220300-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
403 PM EDT SAT MAR 21 2026
TONIGHT
EAST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 2 FEET
OR LESS BUILDING TO 3 TO 5 FEET.
SUNDAY
NORTHEAST WINDS 10 TO 15 KNOTS. A CHANCE OF RAIN
SHOWERS EARLY, THEN RAIN SHOWERS LIKELY. A CHANCE OF RAIN AND
SNOW SHOWERS LATE. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET.
SUNDAY NIGHT
NORTHEAST WINDS 10 TO 15 KNOTS. WAVES 1 TO
3 FEET.
MONDAY
NORTH WINDS 10 TO 15 KNOTS BECOMING NORTHWEST. WAVES
1 TO 3 FEET.
MONDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS. WAVES 1 TO 2 FEET.
TUESDAY
WEST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 20 KNOTS.
WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
WEDNESDAY
WEST WINDS 15 TO 20 KNOTS BECOMING EAST. A CHANCE OF
RAIN AND SNOW SHOWERS WEDNESDAY NIGHT. WAVES 3 TO 5 FEET
SUBSIDING TO 2 TO 4 FEET.
THURSDAY
SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST.
RAIN SHOWERS LIKELY WITH A CHANCE OF SNOW SHOWERS. WAVES 3 TO
6 FEET BUILDING TO 4 TO 7 FEET. WAVES OCCASIONALLY AROUND 9 FEET.
LOZ063-064-220300-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO MEXICO BAY-
403 PM EDT SAT MAR 21 2026
TONIGHT
EAST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS EARLY, THEN A CHANCE OF RAIN
AND SNOW SHOWERS. RAIN SHOWERS LIKELY LATE. WAVES 2 FEET OR LESS
BUILDING TO 3 TO 5 FEET.
SUNDAY
NORTHEAST WINDS 15 TO 20 KNOTS BECOMING NORTH 10 TO
15 KNOTS. A CHANCE OF RAIN SHOWERS EARLY, THEN RAIN SHOWERS
LIKELY. A CHANCE OF SNOW AND RAIN SHOWERS LATE. WAVES 1 TO
3 FEET.
SUNDAY NIGHT
NORTHEAST WINDS 15 TO 20 KNOTS. WAVES 2 TO 4 FEET
BUILDING TO 3 TO 5 FEET.
MONDAY
NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 10 TO
15 KNOTS. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET.
MONDAY NIGHT
NORTHWEST WINDS 5 TO 15 KNOTS. WAVES 1 TO 2 FEET.
TUESDAY
WEST WINDS 5 TO 10 KNOTS BECOMING SOUTHWEST AND
INCREASING TO 15 TO 20 KNOTS. WAVES 1 TO 2 FEET BUILDING TO 3 TO
5 FEET.
WEDNESDAY
WEST WINDS 15 TO 20 KNOTS BECOMING EAST. A CHANCE OF
RAIN AND SNOW SHOWERS. WAVES 4 TO 7 FEET SUBSIDING TO 2 TO
4 FEET. WAVES OCCASIONALLY AROUND 9 FEET.
THURSDAY
SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST TO
30 KNOTS. RAIN SHOWERS LIKELY WITH A CHANCE OF SNOW SHOWERS
DURING THE DAY, THEN RAIN AND SNOW SHOWERS LIKELY THURSDAY NIGHT.
WAVES 3 TO 5 FEET BUILDING TO 6 TO 9 FEET. WAVES OCCASIONALLY
AROUND 11 FEET.
LOZ065-220300-
LAKE ONTARIO OPEN WATERS FROM MEXICO BAY TO THE SAINT LAWRENCE
RIVER-
403 PM EDT SAT MAR 21 2026
TONIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 15 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS THIS EVENING, THEN A CHANCE OF
RAIN AND SNOW SHOWERS AFTER MIDNIGHT. RAIN AND SNOW SHOWERS
LIKELY LATE. WAVES 1 TO 3 FEET.
SUNDAY
NORTHEAST WINDS 15 TO 20 KNOTS BECOMING NORTH 10 TO
15 KNOTS. RAIN SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF
RAIN SHOWERS EARLY IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS
LATE. WAVES 2 FEET OR LESS.
SUNDAY NIGHT
NORTHEAST WINDS 15 TO 20 KNOTS. WAVES 1 TO
3 FEET.
MONDAY
NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 10 TO
15 KNOTS. WAVES 1 TO 3 FEET.
MONDAY NIGHT
NORTHWEST WINDS 5 TO 10 KNOTS BECOMING NORTH.
WAVES 2 FEET OR LESS.
TUESDAY
NORTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS. WAVES 2 FEET OR LESS BUILDING TO 3 TO 5 FEET.
WEDNESDAY
WEST WINDS 15 TO 20 KNOTS BECOMING EAST. A CHANCE OF
RAIN AND SNOW SHOWERS. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO
3 FEET.
THURSDAY
SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST.
RAIN AND SNOW SHOWERS LIKELY. WAVES 2 TO 4 FEET BUILDING TO 4 TO
7 FEET. WAVES OCCASIONALLY AROUND 9 FEET.
LOZ061-220300-
MAFOR 2121/
ONTARIO WEST 1/2 11210 13220 11110 11806 11800 11100. A CHANCE OF
SNOW SHOWERS SUNDAY AFTERNOON. WAVES 2 FEET OR LESS BUILDING TO 3
TO 5 FEET TONIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET
SUNDAY.
ONTARIO EAST 1/2 12210 12320 11220 11810 11800 11810. A CHANCE OF
RAIN AND SNOW SHOWERS OVERNIGHT. A CHANCE OF RAIN SHOWERS SUNDAY
MORNING, THEN A CHANCE OF RAIN AND SNOW SHOWERS SUNDAY AFTERNOON.
WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET TONIGHT. WAVES 1 TO 3
FEET SUNDAY.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page