156
FZUS61 KBUF 200204
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
1004 PM EDT THU MAR 19 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
FOLLOWING THE PASSAGE OF A WARM FRONT, A 30.2 INCH HIGH
WILL BUILD ACROSS THE GREAT LAKES THROUGH THIS EVENING. A 29.8 INCH
LOW WILL TRACK FROM THE UPPER GREAT LAKES TO THE LOWER GREAT LAKES
FRIDAY, BEFORE A 30.0 INCH HIGH BECOMES BRIEFLY ESTABLISHED
SATURDAY. ANOTHER 29.6 INCH WAVE OF LOW PRESSURE WILL CROSS THE
LOWER GREAT LAKES SUNDAY INTO MONDAY WITH A STRONG COLD FRONT IN ITS
WAKE. A 30.4 INCH HIGH IS THEN FORECAST TO BUILD ACROSS THE UPPER
GREAT LAKES ON MONDAY, AND THE EASTERN GREAT LAKES THROUGH TUESDAY.
LOZ062-200900-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
1004 PM EDT THU MAR 19 2026
OVERNIGHT
NORTHWEST WINDS 10 KNOTS OR LESS BECOMING
SOUTHEAST. WAVES 2 FEET OR LESS.
FRIDAY
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING NORTHWEST 15 TO
20 KNOTS. SNOW AND RAIN SHOWERS IN THE MORNING, THEN RAIN SHOWERS
EARLY IN THE AFTERNOON. A CHANCE OF RAIN SHOWERS LATE. WAVES 1 TO
3 FEET BUILDING TO 3 TO 5 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHWEST
10 TO 15 KNOTS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 2 FEET.
SATURDAY
NORTHWEST WINDS 5 TO 10 KNOTS. WAVES AROUND 1 FOOT.
SATURDAY NIGHT
NORTHEAST WINDS 5 TO 10 KNOTS BECOMING EAST. A
CHANCE OF RAIN AND SNOW SHOWERS OVERNIGHT. WAVES AROUND 1 FOOT.
SUNDAY
EAST WINDS 10 TO 15 KNOTS BECOMING NORTHEAST AND
INCREASING TO 15 TO 25 KNOTS. RAIN AND SNOW SHOWERS LIKELY. WAVES
1 TO 3 FEET BUILDING TO 5 TO 7 FEET. WAVES OCCASIONALLY AROUND
9 FEET.
MONDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST. A CHANCE
OF RAIN AND SNOW SHOWERS DURING THE DAY. WAVES 3 TO 6 FEET
SUBSIDING TO 1 TO 3 FEET.
TUESDAY
WEST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET.
LOZ063-064-200900-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO MEXICO BAY-
1004 PM EDT THU MAR 19 2026
OVERNIGHT
NORTHWEST WINDS 10 KNOTS OR LESS BECOMING
SOUTH. WAVES 1 TO 2 FEET.
FRIDAY
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING NORTHWEST 15 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS EARLY, THEN RAIN AND SNOW
SHOWERS LATE IN THE MORNING. RAIN SHOWERS IN THE AFTERNOON. WAVES
1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO
15 KNOTS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
SATURDAY
NORTHWEST WINDS AROUND 10 KNOTS. WAVES 1 TO 2 FEET.
SATURDAY NIGHT
NORTHEAST WINDS 5 TO 10 KNOTS BECOMING EAST. A
CHANCE OF RAIN AND SNOW SHOWERS OVERNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
EAST WINDS 10 TO 15 KNOTS BECOMING NORTH AND INCREASING
TO 15 TO 25 KNOTS. RAIN AND SNOW SHOWERS LIKELY. WAVES 2 FEET OR
LESS BUILDING TO 4 TO 7 FEET. WAVES OCCASIONALLY AROUND 9 FEET.
MONDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST. A CHANCE
OF RAIN AND SNOW SHOWERS DURING THE DAY. WAVES 4 TO 7 FEET
SUBSIDING TO 3 TO 6 FEET. WAVES OCCASIONALLY AROUND 9 FEET.
TUESDAY
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST. A CHANCE
OF SNOW SHOWERS TUESDAY NIGHT. WAVES 2 TO 4 FEET BUILDING TO 4 TO
7 FEET. WAVES OCCASIONALLY AROUND 9 FEET.
LOZ065-200900-
LAKE ONTARIO OPEN WATERS FROM MEXICO BAY TO THE SAINT LAWRENCE
RIVER-
1004 PM EDT THU MAR 19 2026
OVERNIGHT
WEST WINDS 10 KNOTS OR LESS BECOMING NORTH.
WAVES 2 FEET OR LESS.
FRIDAY
SOUTHEAST WINDS 5 TO 10 KNOTS BECOMING NORTH AND
INCREASING TO 15 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS EARLY,
THEN SNOW AND RAIN SHOWERS. RAIN SHOWERS LATE. WAVES 1 FOOT OR
LESS BUILDING TO 2 TO 4 FEET.
FRIDAY NIGHT
NORTH WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO
15 KNOTS. WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT OR LESS.
SATURDAY
NORTHWEST WINDS 5 TO 10 KNOTS BECOMING WEST. WAVES
1 FOOT OR LESS.
SATURDAY NIGHT
NORTHEAST WINDS 5 TO 10 KNOTS BECOMING EAST. A
CHANCE OF RAIN AND SNOW SHOWERS OVERNIGHT. WAVES 1 FOOT OR LESS.
SUNDAY
EAST WINDS 10 TO 15 KNOTS BECOMING NORTH AND INCREASING
TO 15 TO 25 KNOTS. RAIN AND SNOW SHOWERS LIKELY. WAVES 2 FEET OR
LESS BUILDING TO 3 TO 5 FEET.
MONDAY
NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW AND RAIN
SHOWERS DURING THE DAY. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO
3 FEET.
TUESDAY
NORTHWEST WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST
15 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS TUESDAY NIGHT. WAVES
2 FEET OR LESS BUILDING TO 4 TO 7 FEET. WAVES OCCASIONALLY AROUND
9 FEET.
LOZ061-200900-
MAFOR 2003/
ONTARIO WEST 1/2 11700 12300 11317 11326 11720 11820 11810. WAVES
2 FEET OR LESS OVERNIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5
FEET FRIDAY. WAVES 2 TO 4 FEET FRIDAY EVENING.
ONTARIO EAST 1/2 12700 11300 11317 11327 11526 11820 11810. WAVES
2 FEET OR LESS OVERNIGHT. WAVES 1 FOOT OR LESS BUILDING TO 2 TO 4
FEET FRIDAY. WAVES 2 TO 4 FEET FRIDAY EVENING.
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