Great Lakes Forecast
Issued by NWS

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FZUS61 KBUF 220237
GLFLO

GLFLO

OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
1030 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 LATE 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.

LOZ062-220900-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
1030 PM EDT SUN MAY 21 2017

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 10 KNOTS BECOMING SOUTH.
A CHANCE OF SHOWERS LATE THIS EVENING...THEN SHOWERS LIKELY AFTER
MIDNIGHT. WAVES 2 FEET OR LESS.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. 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>065-220900-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
1030 PM EDT SUN MAY 21 2017

.REST OF TONIGHT...SOUTHEAST WINDS 15 TO 20 KNOTS BECOMING SOUTH
10 TO 15 KNOTS. SHOWERS. WAVES 1 TO 3 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING WEST. SHOWERS 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.

$$

LOZ061-220800-
MAFOR 2203/
ONTARIO WEST 1/2 11300 11406 12500 11600 11610 12510. A CHANCE OF
SHOWERS OVERNIGHT. WAVES 1 TO 3 FEET OVERNIGHT. WAVES 2 FEET OR
LESS MONDAY AND MONDAY EVENING.

ONTARIO EAST 1/2 11316 11410 11416 11410 11400 11510 12610. A
CHANCE OF SHOWERS OVERNIGHT AND MONDAY. WAVES 1 TO 3 FEET
SUBSIDING TO 1 FOOT OR LESS OVERNIGHT AND MONDAY. WAVES 2 FEET OR
LESS MONDAY EVENING.

$$


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