657
FZUS61 KBUF 272002
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
402 PM EDT MON APR 27 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 30.3 INCH HIGH WILL RIDGE ALONG THE EASTERN SEABOARD
THROUGH TONIGHT. A 29.4 INCH LOW OVER THE GREAT PLAINS WILL ADVANCE
NORTHEAST INTO THE UPPER GREAT LAKES LATER TONIGHT INTO TUESDAY
MORNING, WHILE PUSHING A WARM FRONT ACROSS THE LAKE. THE LOW WILL
HEAD NORTHEAST TO JAMES BAY TUESDAY NIGHT SENDING A COLD FRONT
ACROSS THE LAKE. AN INVERTED TROUGH AVERAGING 29.7 INCH INVERTED
TROUGH IS EXPECTED ACROSS THE LOWER GREAT LAKES WEDNESDAY THROUGH
WEDNESDAY NIGHT. THE TROUGH/LOW WILL TRACK TO THE COAST OF NEW
ENGLAND THROUGH FRIDAY WHILE ALSO DEEPENING TO 29.5 INCHES.
LOZ062-280300-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
402 PM EDT MON APR 27 2026
TONIGHT
EAST WINDS 15 TO 20 KNOTS BECOMING SOUTHEAST 10 TO
15 KNOTS. WAVES 2 TO 4 FEET.
TUESDAY
SOUTHEAST WINDS 15 TO 20 KNOTS BECOMING SOUTH. SHOWERS
THROUGH EARLY AFTERNOON. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET.
TUESDAY NIGHT
SOUTH WINDS 15 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS. WAVES 1 TO 3 FEET.
WEDNESDAY
NORTH WINDS 10 KNOTS OR LESS. A CHANCE OF SHOWERS IN
THE MORNING, THEN SHOWERS IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
WEDNESDAY NIGHT
NORTH WINDS 10 TO 15 KNOTS BECOMING NORTHWEST.
SHOWERS. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
THURSDAY
WEST WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 10 TO
15 KNOTS. A CHANCE OF RAIN SHOWERS DURING THE DAY. WAVES 2 TO
4 FEET.
FRIDAY
WEST WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 10 TO
15 KNOTS. WAVES 1 TO 3 FEET.
SATURDAY
WEST WINDS 10 TO 15 KNOTS. WAVES 2 TO 3 FEET.
LOZ063>065-280300-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
402 PM EDT MON APR 27 2026
TONIGHT
EAST WINDS 10 TO 15 KNOTS BECOMING SOUTHEAST 15 TO
20 KNOTS. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
TUESDAY
SOUTHEAST WINDS 15 TO 20 KNOTS. SHOWERS LIKELY FROM
LATE MORNING ON. WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 4 FEET.
TUESDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS BECOMING WEST AND
DIMINISHING TO 10 TO 15 KNOTS. WAVES 3 TO 5 FEET SUBSIDING TO
1 TO 3 FEET.
WEDNESDAY
WEST WINDS 5 TO 10 KNOTS BECOMING NORTHEAST. A
CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS IN THE AFTERNOON.
WAVES 2 FEET OR LESS.
WEDNESDAY NIGHT
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING WEST
15 TO 20 KNOTS. SHOWERS. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET.
THURSDAY
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST. RAIN
SHOWERS LIKELY DURING THE DAY. WAVES 3 TO 6 FEET.
FRIDAY
WEST WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET SUBSIDING
TO 2 TO 4 FEET.
SATURDAY
WEST WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO
15 KNOTS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
LOZ061-280300-
MAFOR 2721/
ONTARIO WEST 1/2 12220 11310 12320 12326 11320. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET TONIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 2
TO 4 FEET TUESDAY.
ONTARIO EAST 1/2 11110 11210 11310 13320 11426 11420. WAVES 1 TO
3 FEET BUILDING TO 2 TO 4 FEET TONIGHT. WAVES 3 TO 5 FEET
SUBSIDING TO 2 TO 4 FEET TUESDAY.
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