Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
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
150
FZUS61 KBUF 232039
GLFLO

GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
430 PM EDT Sun Jul 23 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 over eastern Lake Erie this
afternoon will track eastward across western New York today...then
across New York State tonight through Monday night. Meanwhile...a
30.2 inch high will ridge from Hudson Bay to the Upper Great Lakes
through Monday...before extending across the Lower Great Lakes
Tuesday.

LOZ062-240300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
430 PM EDT Sun Jul 23 2017

.TONIGHT...East winds 15 to 25 knots becoming northeast. A chance
of showers and thunderstorms early...then showers and
thunderstorms likely this evening. A chance of showers after
midnight. Some thunderstorms may produce gusty winds this
evening. Waves 3 to 6 feet.
.MONDAY...Northeast winds 5 to 15 knots becoming northwest. A
chance of showers in the morning...then a chance of showers and
thunderstorms in the afternoon. Waves 3 to 5 feet subsiding to
1 to 3 feet.
.MONDAY NIGHT...Northwest winds 10 to 15 knots. A chance of
showers in the evening. Waves 1 to 3 feet building to 2 to
4 feet.
.TUESDAY...North winds 10 to 15 knots becoming northeast. Waves
3 to 5 feet subsiding to 2 to 4 feet.
.TUESDAY NIGHT...East winds 5 to 10 knots becoming southeast.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.WEDNESDAY...Southeast winds 10 knots or less becoming southwest
10 to 15 knots. Waves 2 feet or less.
.THURSDAY...Southwest winds 5 to 15 knots becoming north. Showers
and thunderstorms likely during the day...then a chance of
showers Thursday night. Waves 1 foot or less.
.FRIDAY...Northeast winds 5 to 15 knots diminishing to 10 knots
or less. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-240300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
430 PM EDT Sun Jul 23 2017

.TONIGHT...Northeast winds 15 to 25 knots becoming east. A chance
of showers and thunderstorms early...then showers and
thunderstorms likely this evening. Showers with a chance of
thunderstorms after midnight. Some thunderstorms may produce
gusty winds this evening. Waves 3 to 5 feet.
.MONDAY...Southeast winds 10 to 15 knots increasing to 15 to
20 knots. Showers likely early...then showers with a chance of
thunderstorms from late morning on. Waves 2 to 4 feet.
.MONDAY NIGHT...Southeast winds 15 to 20 knots becoming west 5 to
15 knots. A chance of showers and thunderstorms in the evening...
then a chance of showers overnight. Waves 2 to 4 feet.
.TUESDAY...Northwest winds 10 to 15 knots becoming north 15 to
20 knots. Waves 3 to 5 feet.
.TUESDAY NIGHT...Northeast winds 5 to 15 knots becoming
southeast. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming southwest
15 to 20 knots. Waves 2 feet or less.
.THURSDAY...Southwest winds 5 to 15 knots becoming north. Showers
and thunderstorms likely. Waves 2 feet or less.
.FRIDAY...Northeast winds 5 to 15 knots. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-240300-
MAFOR 2321/
ONTARIO WEST 1/2 11230 11239 12230 11120 11100 12700. A chance of
showers and thunderstorms early this evening. A chance of showers
overnight. A chance of showers in the morning...then a chance of
showers and thunderstorms Monday afternoon. Waves 3 to 6 feet
tonight. Waves 3 to 5 feet subsiding to 1 to 3 feet Monday.

ONTARIO EAST 1/2 11120 11229 12226 12316 11326 11320. A chance of
showers and thunderstorms early this evening. A chance of
thunderstorms in the morning...then a chance of showers and
thunderstorms Monday afternoon. Waves 3 to 5 feet subsiding to 2
to 4 feet tonight. Waves 1 to 3 feet building to 2 to 4 feet
Monday.

$$



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