109
FZUS51 KBUF 171404
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
1003 AM EDT Thu Jul 17 2025

For waters within five nautical miles of shore

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.

LEZ020-172100-
Upper Niagara River and Buffalo Harbor-
1003 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.REST OF TODAY...Southwest winds 20 to 25 knots becoming west. A
chance of showers and thunderstorms.
.TONIGHT...West winds 15 to 20 knots becoming north and
diminishing to 5 to 10 knots. Mostly cloudy.
.FRIDAY...Northeast winds 5 to 10 knots becoming light and
variable. Sunny.
.FRIDAY NIGHT...Light and variable winds. Mainly clear in the
evening, then becoming partly cloudy.
.SATURDAY...South winds 10 knots or less becoming west. A chance
of showers during the day, then a chance of showers and
thunderstorms Saturday night.
.SUNDAY...Northwest winds less than 10 knots. A chance of showers
and thunderstorms during the day.
.MONDAY...Northeast winds less than 10 knots becoming southeast.
Mainly clear, then becoming partly cloudy.

Winds and waves higher in and near thunderstorms.

The water temperature off Buffalo is 78 degrees.

$$

LOZ030-172100-
Lower Niagara River-
1003 AM EDT Thu Jul 17 2025

.REST OF TODAY...Southwest winds 15 to 25 knots becoming west. A
chance of showers and thunderstorms late this morning.
.TONIGHT...Northwest winds 15 to 20 knots becoming north 5 to
15 knots. Mostly cloudy.
.FRIDAY...Northeast winds 10 knots or less. Sunny.
.FRIDAY NIGHT...Northeast winds less than 10 knots. Mainly clear
in the evening, then becoming partly cloudy.
.SATURDAY...South winds 10 knots or less becoming west. A chance
of showers during the day, then a chance of showers and
thunderstorms Saturday night.
.SUNDAY...North winds 10 knots or less. A chance of showers and
thunderstorms during the day.
.MONDAY...Northeast winds 10 knots or less becoming southeast.
Mainly clear, then becoming partly cloudy.

Winds and waves higher in and near thunderstorms.

$$

LEZ040-041-172100-
Buffalo to Ripley along Lake Erie-
1003 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.REST OF TODAY...Southwest winds to 30 knots becoming west. A
chance of showers and thunderstorms. Waves 4 to 7 feet building
to 5 to 9 feet. Waves occasionally around 11 feet.
.TONIGHT...West winds 15 to 20 knots becoming north 5 to
15 knots. Mostly cloudy. Waves 3 to 6 feet subsiding to 1 to
3 feet. Waves occasionally around 7 feet.
.FRIDAY...Northeast winds 10 knots or less becoming north.
Becoming mostly sunny. Waves 2 feet or less.
.FRIDAY NIGHT...North winds less than 10 knots. Mainly clear in
the evening, then becoming partly cloudy. Waves 1 foot or less.
.SATURDAY...West winds 5 to 10 knots. A chance of showers during
the day, then showers likely with a chance of thunderstorms
Saturday night. Waves 2 feet or less.
.SUNDAY...Northwest winds 5 to 10 knots becoming northeast. A
chance of showers during the day. Waves 2 feet or less.
.MONDAY...Northeast winds 5 to 10 knots becoming southeast.
Mainly clear, then becoming partly cloudy. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ042-172100-
Niagara River to Hamlin Beach along Lake Ontario-
1003 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...Southwest winds to 30 knots becoming west. A
chance of showers and thunderstorms. Waves 3 to 5 feet building
to 5 to 9 feet. Waves occasionally around 11 feet.
.TONIGHT...Northwest winds to 30 knots becoming north and
diminishing to 10 to 15 knots overnight. Mostly cloudy. Waves
5 to 9 feet subsiding to 2 to 4 feet. Waves occasionally around
11 feet.
.FRIDAY...Northeast winds 5 to 15 knots becoming east less than
10 knots. Sunny. Waves 1 to 3 feet subsiding to 1 foot or less.
.FRIDAY NIGHT...Southeast winds 10 knots or less becoming south.
Mainly clear in the evening, then becoming partly cloudy. Waves
1 foot or less.
.SATURDAY...South winds 5 to 10 knots becoming northwest. A
chance of showers during the day, then a chance of showers and
thunderstorms Saturday night. Waves 2 feet or less.
.SUNDAY...Northwest winds 10 to 15 knots becoming northeast.
Becoming mainly clear. Waves 1 to 2 feet.
.MONDAY...Northeast winds 5 to 10 knots becoming southeast.
Mainly clear, then becoming partly cloudy. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ043-044-172100-
Hamlin Beach to Mexico Bay along Lake Ontario
including Irondequoit Bay-
1003 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.REST OF TODAY...Southwest winds 15 to 20 knots becoming west and
increasing to 30 knots. A chance of showers and thunderstorms
late this morning, then showers likely with a chance of
thunderstorms early this afternoon. A chance of showers and
thunderstorms late. Some thunderstorms may produce gusty winds
early this afternoon. Waves 1 to 3 feet building to 6 to 9 feet.
Waves occasionally around 11 feet.
.TONIGHT...West winds to 30 knots becoming north 15 to 25 knots.
Partly cloudy in the evening, then becoming mostly cloudy. Waves
8 to 11 feet subsiding to 3 to 5 feet. Waves occasionally around
14 feet.
.FRIDAY...North winds 5 to 15 knots becoming northwest less than
10 knots. Sunny. Waves 2 to 4 feet subsiding to 1 foot or less.
.FRIDAY NIGHT...West winds less than 10 knots becoming south.
Mainly clear in the evening, then becoming partly cloudy. Waves
1 foot or less.
.SATURDAY...South winds 5 to 10 knots becoming west. A chance of
showers during the day, then a chance of showers and
thunderstorms Saturday night. Waves 2 feet or less.
.SUNDAY...Northwest winds 10 to 15 knots becoming north. A chance
of showers during the day. Waves 1 to 2 feet.
.MONDAY...Northeast winds 5 to 10 knots becoming southeast.
Mainly clear, then becoming partly cloudy. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

The water temperature off Rochester is 55 degrees.

$$

LOZ045-172100-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
1003 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH FRIDAY MORNING...

.REST OF TODAY...Southwest winds 10 to 15 knots increasing to
15 to 25 knots. A chance of showers and thunderstorms late this
morning, then showers likely with a chance of thunderstorms early
this afternoon. A chance of showers and thunderstorms late. Some
thunderstorms may produce gusty winds early this afternoon. Waves
1 to 3 feet building to 5 to 8 feet. Waves occasionally around
10 feet.
.TONIGHT...West winds to 30 knots becoming north 15 to 25 knots.
A chance of showers and thunderstorms in the evening. Waves 7 to
10 feet subsiding to 3 to 5 feet. Waves occasionally around
13 feet.
.FRIDAY...North winds 5 to 15 knots becoming west. Sunny. Waves
1 to 3 feet subsiding to 1 foot or less.
.FRIDAY NIGHT...West winds 5 to 10 knots becoming south. Mainly
clear. Waves 1 foot or less.
.SATURDAY...South winds 5 to 10 knots becoming north. A chance of
showers during the day, then a chance of showers and
thunderstorms Saturday night. Waves 2 feet or less.
.SUNDAY...North winds 5 to 10 knots. A chance of showers during
the day. Waves 2 feet or less.
.MONDAY...North winds 5 to 10 knots becoming southeast. Mainly
clear. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$