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 201435
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
935 AM EST Mon Nov 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...Expansive high pressure over the southern states will
slide off the Atlantic coastline tonight. A 29.1 inch low just
south of James Bay on Tuesday will push a cold front across the
lake Tuesday night...then high pressure over the Plains States
will build across the Ohio Valley and Lower Great Lakes Wednesday
and Thursday.

LOZ062-202215-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
935 AM EST Mon Nov 20 2017

.THIS AFTERNOON...West winds 15 to 25 knots. Waves 5 to 8 feet.
Waves occasionally around 10 feet.
.TONIGHT...Southwest winds 15 to 25 knots. Waves 4 to 7 feet.
Waves occasionally around 9 feet.
.TUESDAY...Southwest winds to 30 knots. A chance of showers in
the afternoon. Waves 5 to 8 feet. Waves occasionally around
10 feet.
.TUESDAY NIGHT...Southwest winds 15 to 25 knots becoming west.
Rain showers likely. Waves 3 to 6 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.THURSDAY...Southwest winds 15 to 20 knots becoming west. A
chance of snow showers Thursday night. Waves 2 to 4 feet building
to 3 to 5 feet.
.FRIDAY...West winds around 10 knots becoming southwest and
increasing to 15 to 25 knots. A chance of rain showers Friday
night. Waves 2 to 4 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.

$$

LOZ063>065-202215-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
935 AM EST Mon Nov 20 2017

.THIS AFTERNOON...Southwest winds to 30 knots becoming west 15 to
25 knots. Lake effect snow, then lake effect snow likely late.
Waves 6 to 9 feet. Waves occasionally around 11 feet.
.TONIGHT...Southwest winds 15 to 25 knots. Lake effect snow
showers likely early, then a chance of snow showers late in the
evening. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves
occasionally around 9 feet.
.TUESDAY...Southwest winds 15 to 25 knots. Waves 4 to 7 feet.
Waves occasionally around 9 feet.
.TUESDAY NIGHT...Southwest winds 15 to 25 knots becoming west.
Rain showers likely. Waves 3 to 6 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots diminishing to 10 to 15
knots. A chance of snow showers during the day. Waves 3 to 6 feet
subsiding to 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 20 knots becoming west. A chance
of rain and snow showers during the day, then snow and rain
showers likely Thursday night. Waves 2 to 4 feet building to 3 to
6 feet.
.FRIDAY...Northwest winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. A chance of rain and snow showers
during the day, then a chance of rain showers Friday night. Waves
3 to 5 feet building to 3 to 6 feet.

$$

LOZ061-202215-
MAFOR 2016/
ONTARIO WEST 1/2 11640 11630 14530 11530 11540. Waves 5 to 8
feet, and occasionally around 8 feet.

ONTARIO EAST 1/2 12647 11630 13520 12530. A chance of snow
showers this evening. Waves 6 to 9 feet, and occasionally around
11 feet this afternoon. Waves 4 to 7 feet subsiding to 3 to 6
feet, and occasionally around 9 feet tonight. Waves 3 to 6 feet
building to 4 to 7 feet, and occasionally around 9 feet Tuesday
morning.

$$



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