Great Lakes Forecast
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FZUS61 KBUF 202306
GLFLO

OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
706 PM EDT SAT MAY 20 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 30.2 INCH HIGH WILL LINGER ACROSS THE REGION THROUGH
TONIGHT BEFORE SHIFTING EAST TO NEW ENGLAND ON SUNDAY. MEANWHILE A
29.8 INCH LOW OVER THE MISSOURI VALLEY WILL TRACK TO THE WESTERN
GREAT LAKES. THE LOW WILL DEEPEN TO 29.6 INCHES AS IT TRACKS TO
NEAR JAMES BAY BY MONDAY WHILE PUSHING A COLD FRONT ACROSS LAKE
ONTARIO SUNDAY NIGHT FOLLOWED BY WEAK RIDGING ACROSS THE LAKE
MONDAY AND TUESDAY. THEN A BROAD 29.5 INCH LOW WILL GRADUALLY MOVE
NEAR THE LOWER GREAT LAKES REGION ON WEDNESDAY AND THURSDAY.

LOZ062-210315-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
706 PM EDT SAT MAY 20 2017

.TONIGHT...EAST WINDS 15 TO 20 KNOTS. A CHANCE OF SHOWERS AFTER
MIDNIGHT. WAVES 2 TO 4 FEET.
.SUNDAY...EAST WINDS 15 TO 20 KNOTS. SHOWERS LIKELY IN THE
MORNING...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE
AFTERNOON. SHOWERS WITH A CHANCE OF THUNDERSTORMS LATE. WAVES
1 TO 3 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST.
SHOWERS. WAVES 2 FEET OR LESS.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS. A CHANCE OF SHOWERS IN THE MORNING. WAVES 2 FEET OR
LESS.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 20 KNOTS DIMINISHING TO
10 TO 15 KNOTS. WAVES 1 TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 10 KNOTS OR LESS BECOMING SOUTHEAST. A
CHANCE OF SHOWERS. WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTHEAST WINDS 5 TO 10 KNOTS BECOMING NORTHEAST. A
CHANCE OF SHOWERS. WAVES 1 FOOT OR LESS.
.THURSDAY...NORTHEAST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST.
SHOWERS LIKELY DURING THE DAY...THEN SCATTERED SHOWERS THURSDAY
NIGHT. WAVES 1 FOOT OR LESS.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ063>065-210315-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
706 PM EDT SAT MAY 20 2017

.TONIGHT...NORTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTHEAST
15 TO 20 KNOTS. A CHANCE OF SHOWERS LATE. WAVES 1 TO 3 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 20 KNOTS. SHOWERS LIKELY IN THE
MORNING...THEN SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. WAVES 1 TO 3 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH AND
INCREASING TO 15 TO 25 KNOTS. SHOWERS. WAVES 1 TO 2 FEET BUILDING
TO 2 TO 4 FEET.
.MONDAY...SOUTH WINDS 15 TO 20 KNOTS BECOMING WEST. SHOWERS
LIKELY IN THE MORNING...THEN A CHANCE OF SHOWERS IN THE
AFTERNOON. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 20 KNOTS BECOMING SOUTHWEST
10 TO 15 KNOTS. WAVES 1 TO 3 FEET.
.TUESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST.
WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTHEAST WINDS 5 TO 10 KNOTS BECOMING NORTH. A
CHANCE OF SHOWERS. WAVES 1 FOOT OR LESS.
.THURSDAY...EAST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST. SHOWERS
LIKELY DURING THE DAY...THEN SCATTERED SHOWERS THURSDAY NIGHT.
WAVES 1 FOOT OR LESS.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ061-210315-
MAFOR 2021/
ONTARIO WEST 1/2 11120 11220 12210 11220 11226 12220. A CHANCE OF
SHOWERS OVERNIGHT. A CHANCE OF SHOWERS IN THE MORNING...THEN A
CHANCE OF SHOWERS AND THUNDERSTORMS SUNDAY AFTERNOON. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET TONIGHT. WAVES 1 TO 3 FEET
SUNDAY.

ONTARIO EAST 1/2 12110 11210 11310 14320. A CHANCE OF SHOWERS IN
THE MORNING...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS SUNDAY
AFTERNOON. WAVES 1 TO 3 FEET.

$$



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