Great Lakes Forecast
Issued by NWS

Current Version | Previous Version | Text Only | 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
000
FZUS61 KBUF 252025
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
425 PM EDT Sun Sep 25 2022

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 29.4 inch low will remain nearly stationary over
southern Ontario through tonight before exiting via the Saint
Lawrence Valley on Monday. Weak low pressure will persist over the
lake on Tuesday. A 30.5 inch high will be centered over the Upper
Great Lakes on Wednesday. The area of high pressure will expand
the entire Great Lakes region Wednesday night and Thursday and
cross the lower Great Lakes and Northeast on Friday.

LOZ062-260315-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
425 PM EDT Sun Sep 25 2022

.TONIGHT...West winds 10 to 15 knots becoming southwest 15 to
20 knots. A chance of waterspouts. Showers likely this evening,
then a chance of showers after midnight. Waves 1 to 3 feet
building to 3 to 5 feet.
.MONDAY...Southwest winds 15 to 25 knots. A chance of
waterspouts. A chance of showers early, then showers likely from
late morning on. Waves 3 to 6 feet.
.MONDAY NIGHT...Southwest winds to 30 knots becoming west. A
chance of waterspouts. Showers likely in the evening, then
showers likely with a chance of thunderstorms overnight. Waves
5 to 8 feet building to 7 to 11 feet. Waves occasionally around
14 feet.
.TUESDAY...West winds 15 to 25 knots. A chance of waterspouts.
Showers with a chance of thunderstorms. Waves 6 to 9 feet
subsiding to 4 to 7 feet. Waves occasionally around 11 feet.
.TUESDAY NIGHT...West winds 15 to 25 knots becoming northwest. A
chance of waterspouts. Showers with a chance of thunderstorms.
Waves 3 to 6 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. A chance of waterspouts during the
day. Showers likely during the day. Waves 3 to 6 feet subsiding
to 2 to 4 feet.
.THURSDAY...North winds 5 to 15 knots becoming northeast. Waves
2 feet or less.
.FRIDAY...East winds 5 to 10 knots becoming southeast. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-260315-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
425 PM EDT Sun Sep 25 2022

.TONIGHT...West winds 5 to 15 knots becoming southwest 15 to
20 knots. A chance of waterspouts. Showers likely early, then
showers. Showers with a chance of thunderstorms late. Waves
1 foot or less building to 3 to 5 feet.
.MONDAY...Southwest winds 15 to 25 knots. A chance of
waterspouts. Showers likely early, then showers from late morning
on. Waves 3 to 6 feet.
.MONDAY NIGHT...Southwest winds to 30 knots. A chance of
waterspouts. Showers in the evening, then showers likely with a
chance of thunderstorms overnight. Waves 4 to 7 feet building to
8 to 12 feet. Waves occasionally around 15 feet.
.TUESDAY...Southwest winds to 30 knots becoming west 15 to
25 knots. A chance of waterspouts. Showers with a chance of
thunderstorms. Waves 8 to 11 feet subsiding to 4 to 7 feet. Waves
occasionally around 14 feet.
.TUESDAY NIGHT...West winds 15 to 25 knots. A chance of
waterspouts. Showers with a chance of thunderstorms in the
evening, then showers overnight. Waves 4 to 7 feet subsiding to
3 to 6 feet. Waves occasionally around 9 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. A chance of waterspouts during the
day. Showers likely during the day, then a chance of showers
Wednesday night. Waves 3 to 6 feet subsiding to 1 to 3 feet.
.THURSDAY...North winds 5 to 15 knots becoming northeast. Waves
1 to 3 feet subsiding to 1 foot or less.
.FRIDAY...East winds 5 to 10 knots becoming southeast. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-260315-
MAFOR 2521/
ONTARIO WEST 1/2 11610 11616 11620 13520 11530 11536. A chance of
waterspouts. Waves 1 to 3 feet building to 3 to 5 feet tonight.
Waves 3 to 6 feet Monday.

ONTARIO EAST 1/2 12600 11616 11526 12520 12526. A chance of
waterspouts. Waves 1 to 3 feet building to 3 to 5 feet tonight.
Waves 3 to 6 feet Monday.

$$

JLA


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