Great Lakes Forecast
Issued by NWS

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333
FZUS61 KBUF 210541
GLFLO

OPEN LAKE FORECAST FOR LAKE ONTARIO
NATIONAL WEATHER SERVICE BUFFALO NY
141 AM EDT THU MAY 21 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE ONTARIO

.SYNOPSIS...A 30.3 INCH HIGH CENTERED ACROSS THE UPPER PLAINS WILL
RIDGE ACROSS THE GREAT LAKES OVERNIGHT AND THURSDAY. A 29.7 INCH
LOW WILL FORM NEAR THE OTTAWA VALLEY THURSDAY AND TRACK ACROSS THE
LOWER SAINT LAWRENCE VALLEY FRIDAY. MEANWHILE A COLD FRONT WILL
CROSS THE LAKE FROM NORTH TO SOUTH ON FRIDAY BEFORE A 30.4 INCH
AREA OF HIGH PRESSURE MOVES OVER THE REGION THIS WEEKEND.

LOZ062-210900-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
141 AM EDT THU MAY 21 2015

.OVERNIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS. WAVES 1 FOOT OR
LESS.
.THURSDAY...WEST WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST. WAVES
1 FOOT OR LESS.
.THURSDAY NIGHT...SOUTHWEST WINDS AROUND 10 KNOTS BECOMING WEST.
WAVES 2 FEET OR LESS.
.FRIDAY...NORTHWEST WINDS 5 TO 10 KNOTS BECOMING WEST AND
INCREASING TO 15 TO 20 KNOTS. WAVES 2 FEET OR LESS.
.FRIDAY NIGHT...NORTHWEST WINDS 15 TO 20 KNOTS BECOMING WEST
10 TO 15 KNOTS. WAVES 1 TO 3 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST. WAVES
1 TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS. WAVES 2 FEET OR LESS.
.MONDAY...SOUTHEAST WINDS 10 KNOTS OR LESS BECOMING SOUTH. A
CHANCE OF SHOWERS AND THUNDERSTORMS DURING THE DAY...THEN SHOWERS
LIKELY WITH A CHANCE OF THUNDERSTORMS MONDAY NIGHT. WAVES 1 FOOT
OR LESS.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ063>065-210900-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO THE SAINT LAWRENCE
RIVER-
141 AM EDT THU MAY 21 2015

.OVERNIGHT...WEST WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST.
WAVES 1 TO 3 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. WAVES 1 TO 2 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING WEST.
WAVES 2 FEET OR LESS.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST. WAVES
2 FEET OR LESS.
.FRIDAY NIGHT...WEST WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO
15 KNOTS. WAVES 1 TO 3 FEET.
.SATURDAY...WEST WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST. WAVES
1 TO 3 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST LESS THAN
10 KNOTS. WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT OR LESS.
.MONDAY...SOUTHEAST WINDS 10 KNOTS OR LESS BECOMING SOUTH. A
CHANCE OF SHOWERS AND THUNDERSTORMS DURING THE DAY...THEN SHOWERS
LIKELY WITH A CHANCE OF THUNDERSTORMS MONDAY NIGHT. WAVES 1 FOOT
OR LESS.

WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.

$$

LOZ061-210900-
MAFOR 2106 AMD/
ONTARIO WEST 1/2 11510 11500 11600 11500 13510. WAVES 2 FEET OR
LESS.

ONTARIO EAST 1/2 11610 11500 11510 11610 13510. WAVES 1 TO 3 FEET
OVERNIGHT...THEN WAVES 2 FEET OR LESS.

$$

APFFEL/JJR/THOMAS/TMA



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