Great Lakes Forecast
Issued by NWS

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FZUS61 KBUF 212336
GLFLO

GLFLO

OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
730 PM EDT SUN MAY 21 2017

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 29.7 INCH LOW IS NEAR LAKE SUPERIOR THIS EVENING, AND
THIS LOW WILL DEEPEN TO 29.6 INCHES AS IT TRACKS TO NEAR JAMES BAY
BY MONDAY WHILE PUSHING A COLD FRONT ACROSS LAKE ONTARIO TONIGHT.
THIS AREA OF LOW PRESSURE WILL BE FOLLOWED BY WEAK RIDGING ACROSS
THE LAKE MONDAY AND TUESDAY. A BROAD 29.5 INCH LOW WILL THEN
GRADUALLY MOVE ACROSS THE LOWER GREAT LAKES ON WEDNESDAY INTO
THURSDAY.

LOZ062-220300-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
730 PM EDT SUN MAY 21 2017

.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH. SHOWERS
THIS EVENING...THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. SHOWERS
LATE. WAVES 2 FEET OR LESS.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS
EARLY. WAVES 1 FOOT OR LESS.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS. WAVES 1 TO
2 FEET.
.TUESDAY...SOUTHWEST WINDS 10 KNOTS OR LESS BECOMING SOUTHEAST.
WAVES 1 FOOT OR LESS.
.TUESDAY NIGHT...EAST WINDS 5 TO 10 KNOTS. WAVES 1 FOOT OR LESS.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST. A
CHANCE OF SHOWERS DURING THE DAY...THEN SHOWERS LIKELY WEDNESDAY
NIGHT. WAVES 2 FEET OR LESS.
.THURSDAY...SOUTH WINDS 5 TO 10 KNOTS BECOMING WEST. SHOWERS
LIKELY. WAVES 1 FOOT OR LESS.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST. A CHANCE
OF SHOWERS DURING THE DAY. WAVES 2 FEET OR LESS.

$$

LOZ063>065-220300-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
730 PM EDT SUN MAY 21 2017

.TONIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH 15 TO
20 KNOTS. SHOWERS. WAVES 1 TO 3 FEET.
.MONDAY...SOUTH WINDS 15 TO 20 KNOTS BECOMING WEST 5 TO 15 KNOTS.
SHOWERS LIKELY IN THE MORNING...THEN A CHANCE OF SHOWERS EARLY IN
THE AFTERNOON. WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT OR LESS.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST.
WAVES 2 FEET OR LESS.
.TUESDAY...SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING SOUTHEAST.
WAVES 2 FEET OR LESS.
.TUESDAY NIGHT...EAST WINDS 10 KNOTS OR LESS. WAVES 1 FOOT OR
LESS.
.WEDNESDAY...EAST WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST
10 TO 15 KNOTS. A CHANCE OF SHOWERS DURING THE DAY...THEN SHOWERS
LIKELY WEDNESDAY NIGHT. WAVES 1 FOOT OR LESS.
.THURSDAY...SOUTHEAST WINDS 5 TO 10 KNOTS BECOMING WEST. SHOWERS
LIKELY. WAVES 1 FOOT OR LESS.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
1 TO 3 FEET.

$$

LOZ061-220200-
MAFOR 2200 AMD/
ONTARIO WEST 1/2 11316 11410 11406 12500 11600 11610. A CHANCE OF
SHOWERS OVERNIGHT AND MONDAY MORNING. WAVES 1 TO 3 FEET TONIGHT.
WAVES 1 FOOT OR LESS MONDAY.

ONTARIO EAST 1/2 12426 11420 12416 11400 11510. A CHANCE OF
SHOWERS MONDAY AFTERNOON. WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT
OR LESS.

$$



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