746
FZUS61 KBUF 190209
GLFLO
OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
1009 PM EDT WED MAR 18 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 30.4 INCH HIGH RIDGED FROM THE LOWER OHIO VALLEY
TO THE LAKE WILL SLIDE EAST TO THE EAST COAST BY THIS EVENING.
FOLLOWING THE PASSAGE OF A WEAK WARM FRONT, A 30.2 INCH HIGH WILL
BUILD ACROSS THE GREAT LAKES REGION THURSDAY AND THURSDAY EVENING. A
29.8 INCH LOW WILL SETTLE FROM THE UPPER GREAT LAKES TO THE LOWER
LAKES FRIDAY, WITH ANOTHER 29.6 INCH LOW THEN MOVING FROM NEAR JAMES
BAY TO THE CANADIAN MARITIMES BETWEEN SATURDAY AND SUNDAY AND
PUSHING A COLD FRONT ACROSS THE LAKE. A 30.4 INCH HIGH IS THEN
FORECAST TO BUILD ACROSS THE GREAT LAKES ON MONDAY.
LOZ062-190900-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
1009 PM EDT WED MAR 18 2026
REST OF TONIGHT
SOUTH WINDS 10 TO 15 KNOTS. SCATTERED FLURRIES
LATE THIS EVENING, THEN SCATTERED SNOW SHOWERS AFTER MIDNIGHT.
WAVES 1 TO 2 FEET.
THURSDAY
SOUTH WINDS 10 TO 15 KNOTS BECOMING WEST. A CHANCE OF
SNOW SHOWERS IN THE MORNING. WAVES 1 TO 2 FEET.
THURSDAY NIGHT
WEST WINDS 10 KNOTS OR LESS BECOMING SOUTHWEST.
WAVES 1 FOOT OR LESS.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST. A CHANCE
OF RAIN AND SNOW SHOWERS IN THE MORNING, THEN RAIN SHOWERS LIKELY
IN THE AFTERNOON. WAVES 2 FEET OR LESS.
FRIDAY NIGHT
EAST WINDS AROUND 10 KNOTS BECOMING NORTHWEST.
RAIN SHOWERS LIKELY IN THE EVENING, THEN A CHANCE OF RAIN SHOWERS
OVERNIGHT. WAVES 1 TO 2 FEET.
SATURDAY
WEST WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS SATURDAY NIGHT. WAVES
1 TO 2 FEET BUILDING TO 2 TO 4 FEET.
SUNDAY
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH. A CHANCE
OF RAIN AND SNOW SHOWERS. WAVES 3 TO 6 FEET BUILDING TO 4 TO
7 FEET. WAVES OCCASIONALLY AROUND 9 FEET.
MONDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING EAST AND
DIMINISHING TO 10 TO 15 KNOTS. WAVES 3 TO 6 FEET SUBSIDING TO
1 TO 3 FEET.
LOZ063>065-190900-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
1009 PM EDT WED MAR 18 2026
REST OF TONIGHT
SOUTH WINDS 15 TO 20 KNOTS. SCATTERED FLURRIES
AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
THURSDAY
SOUTH WINDS 15 TO 20 KNOTS BECOMING SOUTHWEST 10 TO
15 KNOTS. A CHANCE OF SNOW SHOWERS IN THE MORNING, THEN A CHANCE
OF RAIN AND SNOW SHOWERS EARLY IN THE AFTERNOON. WAVES 3 TO
5 FEET SUBSIDING TO 1 TO 3 FEET.
THURSDAY NIGHT
WEST WINDS 10 KNOTS OR LESS. WAVES 2 FEET OR
LESS.
FRIDAY
SOUTH WINDS 10 KNOTS OR LESS BECOMING SOUTHEAST. A
CHANCE OF RAIN AND SNOW SHOWERS IN THE MORNING, THEN RAIN SHOWERS
LIKELY IN THE AFTERNOON. WAVES 1 FOOT OR LESS.
FRIDAY NIGHT
EAST WINDS 10 TO 15 KNOTS BECOMING NORTHWEST.
RAIN SHOWERS LIKELY IN THE EVENING, THEN A CHANCE OF RAIN SHOWERS
OVERNIGHT. WAVES 2 FEET OR LESS.
SATURDAY
WEST WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST 15 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS DURING THE DAY, THEN A CHANCE
OF RAIN AND SNOW SHOWERS SATURDAY NIGHT. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET.
SUNDAY
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH TO
30 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES 3 TO 6 FEET
BUILDING TO 5 TO 8 FEET. WAVES OCCASIONALLY AROUND 10 FEET.
MONDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHEAST. WAVES
5 TO 8 FEET SUBSIDING TO 1 TO 3 FEET. WAVES OCCASIONALLY AROUND
10 FEET.
LOZ061-190900-
MAFOR 1903/
ONTARIO WEST 1/2 14410 11500 12600 11700. A CHANCE OF SNOW
SHOWERS OVERNIGHT AND THURSDAY MORNING. WAVES 1 TO 2 FEET.
ONTARIO EAST 1/2 14420 11420 11510 12600. A CHANCE OF SNOW
SHOWERS THURSDAY MORNING. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4
FEET OVERNIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET
THURSDAY. WAVES 2 FEET OR LESS THURSDAY EVENING.
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