Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FZUS61 KBUF 180613
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
113 AM EST Sat Nov 18 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 30.1 inch high will move east across New England
overnight...while a broad 29.4 inch low will become organized
over the central plains. The low will deepen to 29.1 inches on
Saturday while advancing across the Mid West to Lake Erie. The
storm will then track across the lake Saturday night while further
deepening to 28.9 inches. As the deep storm exits across the
Saint Lawrence Valley on Sunday...expansive high pressure will
build across the Lower Mississippi Valley. The large high will
cross the southern states on Monday.

LOZ062-181015-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
113 AM EST Sat Nov 18 2017

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
EVENING...

.OVERNIGHT...Southeast winds 10 to 15 knots. Rain likely after 4
am. Waves 1 to 3 feet.
.SATURDAY...Southeast winds 10 to 15 knots becoming south.
Occasional rain. Waves 1 to 3 feet.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots becoming
northwest and increasing to 35 knot gales overnight. Rain. Waves
1 to 3 feet building to 7 to 10 feet. Waves occasionally around
13 feet.
.SUNDAY...Northwest gales to 35 knots. A chance of snow and rain
in the morning, then lake effect snow likely in the afternoon.
Waves 10 to 15 feet subsiding to 9 to 12 feet. Waves occasionally
around 19 feet.
.SUNDAY NIGHT...Northwest winds to 30 knots. Lake effect snow
likely. Waves 9 to 12 feet. Waves occasionally around 15 feet.
.MONDAY...West winds 15 to 25 knots. A chance of rain and snow.
Waves subsiding to 3 to 6 feet.
.TUESDAY...Southwest winds to 30 knots. A chance of rain showers
Tuesday night. Waves 5 to 8 feet. Waves occasionally around 10
feet.
.WEDNESDAY...West winds 15 to 20 knots. Waves 3 to 5 feet.

$$

LOZ063>065-181015-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
113 AM EST Sat Nov 18 2017

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
EVENING...

.OVERNIGHT...Southeast winds 15 to 20 knots. A chance of
rain late. Waves 1 to 3 feet building to 2 to 4 feet.
.SATURDAY...South winds 15 to 20 knots. Rain. Waves building to
3 to 5 feet.
.SATURDAY NIGHT...South winds 15 to 25 knots becoming west and
increasing to 35 knot gales overnight. Rain. Waves building to 5
to 8 feet. Waves occasionally around 10 feet.
.SUNDAY...Northwest gales to 35 knots. Snow and rain in the
morning, then lake effect snow in the afternoon. Waves 11 to
16 feet. Waves occasionally around 20 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots. Lake effect snow.
Waves 10 to 14 feet. Waves occasionally around 18 feet.
.MONDAY...Northwest winds 15 to 25 knots becoming southwest. Lake
effect rain and snow. Waves subsiding to 4 to 6 feet.
.TUESDAY...Southwest winds 15 to 25 knots. A chance of rain
showers Tuesday night. Waves 5 to 9 feet. Waves occasionally
around 11 feet.
.WEDNESDAY...West winds 15 to 20 knots. A chance of snow showers.
Waves 4 to 7 feet. Waves occasionally around 9 feet.

$$

LOZ061-181015-
MAFOR 1807 AMD/
ONTARIO WEST 1/2 11310 11316 12416 11410 11316 11416. A chance of
rain overnight and Saturday afternoon. Waves 1 to 3 feet
overnight. Waves 1 to 3 feet building to 3 to 5 feet, then
subsiding to 1 to 3 feet Saturday. Waves 1 to 3 feet Saturday
evening.

ONTARIO EAST 1/2 11320 11420 12426 11420 11426 11436. A chance of
rain Saturday afternoon. Waves 1 to 3 feet building to 2 to 4
feet overnight. Waves 2 to 4 feet building to 3 to 5 feet
Saturday. Waves 3 to 6 feet Saturday evening.

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.