093
FZUS61 KBUF 130803
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
403 AM EDT FRI MAR 13 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 29.0 INCH LOW WILL MOVE FROM THE UPPER GREAT LAKES
THIS MORNING TO THE OTTAWA VALLEY TONIGHT WHILE WEAKENING TO 29.5
INCHES. THIS LOW WILL CONTINUE EAST TO THE CANADIAN MARITIMES
SATURDAY AS A 30.3 INCH HIGH BUILDS INTO THE LOWER GREAT LAKES. A
30.3 INCH HIGH WILL THEN RIDGE ACROSS THE LAKE SATURDAY NIGHT,
BEFORE MOVING EAST OF THE LAKE SUNDAY. MEANWHILE, A 29.5 INCH
SURFACE LOW OVER THE MID MISSISSIPPI VALLEY SUNDAY MORNING WILL
TRACK NORTHEASTWARD AND DEEPEN TO 28.9 INCHES JUST TO THE WEST OF
THE LAKE MONDAY MORNING, BEFORE PUSHING NORTHEASTWARD ACROSS QUEBEC
THROUGH THE REMAINDER OF MONDAY AND TUESDAY. THIS LOW WILL SWEEP A
STRONG COLD FRONT ACROSS THE LAKE MONDAY AFTERNOON, WITH A 30.3 INCH
HIGH THEN BUILDING ACROSS THE GREAT LAKES AND OHIO VALLEY TUESDAY.
LOZ062-131500-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
403 AM EDT FRI MAR 13 2026
...GALE WARNING IN EFFECT FROM 3 PM EDT THIS AFTERNOON THROUGH
SATURDAY MORNING...
TODAY
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH AND
INCREASING TO 35 KNOT GALES. SNOW SHOWERS. RAIN AND SNOW SHOWERS
LATE. WAVES 1 TO 2 FEET BUILDING TO 7 TO 10 FEET. WAVES
OCCASIONALLY AROUND 13 FEET.
TONIGHT
SOUTHWEST GALES TO 40 KNOTS BECOMING WEST TO 35 KNOTS.
RAIN SHOWERS EARLY, THEN RAIN AND SNOW SHOWERS LIKELY LATE IN THE
EVENING. A CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT. WAVES
10 TO 15 FEET. WAVES OCCASIONALLY AROUND 19 FEET.
SATURDAY
WEST GALES TO 35 KNOTS DIMINISHING TO 15 TO 25 KNOTS.
A CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES 11 TO 15 FEET
SUBSIDING TO 4 TO 7 FEET. WAVES OCCASIONALLY AROUND 19 FEET.
SATURDAY NIGHT
WEST WINDS 15 TO 20 KNOTS BECOMING EAST 5 TO
15 KNOTS. A CHANCE OF SNOW SHOWERS OVERNIGHT. WAVES 3 TO 5 FEET
SUBSIDING TO 1 TO 3 FEET.
SUNDAY
EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST TO
30 KNOTS. SNOW AND RAIN SHOWERS DURING THE DAY, THEN A CHANCE OF
RAIN SHOWERS SUNDAY NIGHT. WAVES 3 TO 6 FEET BUILDING TO 5 TO
9 FEET. WAVES OCCASIONALLY AROUND 11 FEET.
MONDAY
SOUTHEAST WINDS TO 30 KNOTS BECOMING WEST AND
INCREASING TO 40 KNOT GALES. RAIN SHOWERS DURING THE DAY, THEN
RAIN SHOWERS WITH A CHANCE OF SNOW SHOWERS MONDAY NIGHT. WAVES
5 TO 8 FEET BUILDING TO 13 TO 17 FEET. WAVES OCCASIONALLY AROUND
22 FEET.
TUESDAY
WEST GALES TO 35 KNOTS DIMINISHING TO 15 TO 25 KNOTS.
A CHANCE OF SNOW SHOWERS DURING THE DAY. WAVES 12 TO 16 FEET
SUBSIDING TO 7 TO 10 FEET. WAVES OCCASIONALLY AROUND 20 FEET.
LOZ063>065-131500-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
403 AM EDT FRI MAR 13 2026
...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY
AFTERNOON...
TODAY
SOUTH WINDS 10 TO 15 KNOTS BECOMING SOUTHEAST AND
INCREASING TO 30 KNOTS THIS AFTERNOON. A CHANCE OF SNOW SHOWERS
LATE THIS MORNING. SNOW SHOWERS EARLY THIS AFTERNOON, THEN SNOW
AND RAIN SHOWERS LATE. WAVES 1 TO 3 FEET BUILDING TO 5 TO 8 FEET.
WAVES OCCASIONALLY AROUND 10 FEET.
TONIGHT
SOUTHWEST GALES TO 35 KNOTS BECOMING WEST. RAIN AND
SNOW SHOWERS. WAVES 7 TO 10 FEET BUILDING TO 12 TO 16 FEET. WAVES
OCCASIONALLY AROUND 20 FEET.
SATURDAY
WEST GALES TO 40 KNOTS DIMINISHING TO 30 KNOTS. SNOW
SHOWERS WITH RAIN SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF
SNOW SHOWERS IN THE AFTERNOON. WAVES 14 TO 19 FEET SUBSIDING TO
10 TO 15 FEET. WAVES OCCASIONALLY AROUND 24 FEET.
SATURDAY NIGHT
WEST WINDS 15 TO 25 KNOTS BECOMING EAST AND
DIMINISHING TO 5 TO 15 KNOTS. WAVES 7 TO 10 FEET SUBSIDING TO
2 FEET OR LESS. WAVES OCCASIONALLY AROUND 13 FEET.
SUNDAY
EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST AND
INCREASING TO 40 KNOT GALES. SNOW SHOWERS LIKELY WITH A CHANCE OF
RAIN SHOWERS DURING THE DAY, THEN A CHANCE OF RAIN SHOWERS SUNDAY
NIGHT. WAVES 2 TO 4 FEET BUILDING TO 9 TO 12 FEET. WAVES
OCCASIONALLY AROUND 15 FEET.
MONDAY
SOUTHEAST GALES TO 40 KNOTS BECOMING SOUTHWEST. RAIN
SHOWERS DURING THE DAY, THEN RAIN SHOWERS WITH SNOW SHOWERS
LIKELY MONDAY NIGHT. WAVES 7 TO 11 FEET BUILDING TO 14 TO
18 FEET. WAVES OCCASIONALLY AROUND 23 FEET.
TUESDAY
WEST GALES TO 40 KNOTS DIMINISHING TO 30 KNOTS. A
CHANCE OF SNOW SHOWERS DURING THE DAY. WAVES 13 TO 18 FEET
SUBSIDING TO 10 TO 14 FEET. WAVES OCCASIONALLY AROUND 23 FEET.
LOZ061-131500-
MAFOR 1309/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...11410 11330 11347
11357 11456 11556 11550 11650. WAVES 1 TO 2 FEET BUILDING TO 7 TO
10 FEET, AND OCCASIONALLY AROUND 13 FEET TODAY. WAVES 10 TO 15
FEET, AND OCCASIONALLY AROUND 19 FEET TONIGHT.
ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11510 11320 11330
11347 11447 12547 11550. WAVES 1 TO 3 FEET BUILDING TO 5 TO 8
FEET, AND OCCASIONALLY AROUND 10 FEET TODAY. WAVES 6 TO 9 FEET
BUILDING TO 11 TO 15 FEET, AND OCCASIONALLY AROUND 19 FEET
TONIGHT.
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