Flash Flooding Likely into Tonight for Portions of Kansas and Missouri; Heat Wave Expands to the East Coast; Tropical Storm Krosa Forms Near the Marianas.

Flash flooding likely in northeast Kansas & Missouri into tonight. Widespread extreme heat will develop and persist across much of the Southeast this weekend & next week. Tropical Storm Krosa has formed and will continue to cause heavy rain across Guam & the CNMI through Saturday. Severe storms with flooding rains expected into tonight for portions of the Midwest. Read More >

Lake Erie

The reported Lake Erie water temperature is taken at the Buffalo Water Treatment Plant located on Lake Erie at the entrance to the Niagara River. The reading is taken at a depth of 30 feet. This data is unofficial.

Lake Ontario

The reported Lake Ontario water temperature is taken at the Monroe County Water Treatment Plant near Greece, N.Y. The temperatures is measured at the intake pipes about 1500 feet offshore at a approximate depth of 35 feet. The Lake Ontario temperature occasionally may not be representative of the surface temperature due to upwelling. This process, more common during the summer months, brings colder water from the deeper parts of the lake toward the surface near the temperature sensor. The surface water may be significantly warmer. This data is unofficial.

Latest Lake Temperatures

1003 AM EDT Thu Jul 24 2025 The water temperature off Buffalo is 77 degrees.

1003 AM EDT Thu Jul 24 2025 The water temperature off Rochester is 47 degrees.

Monthly Lake Erie Temperatures
January	February	March	April	May	June	July	August	September	October	November	December

Historical Lake Erie Temperatures (Unofficial Normals and Extremes)

The daily lake temperatures for Lake Erie off Buffalo and for Lake Ontario off Rochester are included in the Nearshore Marine Forecast.

Click the link for previous versions of the Nearshore Marine Forecast.

NearShore Marine Forecast

537
FZUS51 KBUF 250204
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
1004 PM EDT Thu Jul 24 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.

LEZ020-250900-
Upper Niagara River and Buffalo Harbor-
1004 PM EDT Thu Jul 24 2025

.REST OF TONIGHT...Southwest winds 5 to 10 knots. A chance of
showers and thunderstorms, then showers likely with a chance of
thunderstorms late.
.FRIDAY...West winds 5 to 10 knots. Showers likely with a chance
of thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.FRIDAY NIGHT...West winds 5 to 10 knots becoming light and
variable. Partly to mostly cloudy.
.SATURDAY...Light and variable winds. Partly sunny.
.SATURDAY NIGHT...South winds less than 10 knots. A chance of
showers and thunderstorms.
.SUNDAY...Southwest winds 5 to 10 knots becoming light and
variable. A chance of showers and thunderstorms during the day,
then a chance of showers Sunday night.
.MONDAY...Southwest winds 10 knots or less. A chance of showers
and thunderstorms Monday night.
.TUESDAY...West winds 10 knots or less becoming northwest. A
chance of showers during the day.

Winds and waves higher in and near thunderstorms.

The water temperature off Buffalo is 77 degrees.

$$

LOZ030-250900-
Lower Niagara River-
1004 PM EDT Thu Jul 24 2025

.REST OF TONIGHT...Southwest winds 5 to 15 knots. Showers likely
with a chance of thunderstorms late this evening, then a chance
of showers and thunderstorms after midnight. Showers likely with
a chance of thunderstorms late.
.FRIDAY...West winds 5 to 10 knots becoming northwest. Showers
likely in the morning, then a chance of showers in the afternoon.
.FRIDAY NIGHT...Northwest winds less than 10 knots. Partly to
mostly cloudy.
.SATURDAY...East winds 10 knots or less. Partly sunny.
.SATURDAY NIGHT...East winds less than 10 knots becoming
southwest. A chance of showers and thunderstorms.
.SUNDAY...Southwest winds 5 to 10 knots becoming light and
variable. A chance of showers and thunderstorms during the day.
.MONDAY...Southwest winds 10 knots or less becoming west. A
chance of showers and thunderstorms Monday night.
.TUESDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers during the day.

Winds and waves higher in and near thunderstorms.

$$

LEZ041-250900-
Dunkirk to Buffalo along Lake Erie-
1004 PM EDT Thu Jul 24 2025

.REST OF TONIGHT...Southwest winds 5 to 10 knots. A chance of
showers and thunderstorms, then showers likely with a chance of
thunderstorms late. Waves 1 to 2 feet.
.FRIDAY...West winds around 10 knots becoming southwest. Showers
likely with a chance of thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon. Waves 1 to
2 feet.
.FRIDAY NIGHT...West winds 10 knots or less becoming southeast.
Partly to mostly cloudy. Waves 2 feet or less.
.SATURDAY...Southeast winds less than 10 knots becoming west.
Partly sunny. Waves 1 foot or less.
.SATURDAY NIGHT...South winds 10 knots or less becoming
southwest. A chance of showers and thunderstorms in the evening,
then showers likely with a chance of thunderstorms overnight.
Waves 1 foot or less.
.SUNDAY...Southwest winds 5 to 15 knots diminishing to less than
10 knots. Showers likely with a chance of thunderstorms during
the day, then a chance of showers Sunday night. Waves 2 feet or
less.
.MONDAY...Southwest winds 10 knots or less. A chance of showers
and thunderstorms Monday night. Waves 1 foot or less.
.TUESDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers during the day. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LEZ040-250900-
Ripley to Dunkirk along Lake Erie-
1004 PM EDT Thu Jul 24 2025

.REST OF TONIGHT...Southwest winds around 10 knots. A chance of
showers and thunderstorms after midnight. Showers likely with a
chance of thunderstorms late. Waves 1 to 2 feet.
.FRIDAY...Southwest winds around 10 knots becoming west. Showers
likely with a chance of thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon. Waves 1 to
2 feet.
.FRIDAY NIGHT...West winds 10 knots or less becoming southeast.
Mostly cloudy. Waves 1 to 2 feet.
.SATURDAY...Southeast winds less than 10 knots becoming north.
Partly sunny. Waves 1 foot or less.
.SATURDAY NIGHT...East winds 10 knots or less becoming southwest.
A chance of showers and thunderstorms in the evening, then
showers likely with a chance of thunderstorms overnight. Waves
1 foot or less.
.SUNDAY...Southwest winds 10 knots or less. Showers likely with a
chance of thunderstorms during the day, then a chance of showers
Sunday night. Waves 2 feet or less.
.MONDAY...Southwest winds 10 knots or less. A chance of showers
and thunderstorms Monday night. Waves around 1 foot.
.TUESDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers during the day. Waves around 1 foot.

Winds and waves higher in and near thunderstorms.

$$

LOZ042-250900-
Niagara River to Hamlin Beach along Lake Ontario-
1004 PM EDT Thu Jul 24 2025

.REST OF TONIGHT...Southwest winds 10 to 15 knots. Showers likely
with a chance of thunderstorms late this evening, then a chance
of showers and thunderstorms after midnight. Showers likely with
a chance of thunderstorms late. Waves 1 to 3 feet.
.FRIDAY...West winds 5 to 10 knots. Showers likely in the
morning, then a chance of showers in the afternoon. Waves 2 feet
or less.
.FRIDAY NIGHT...West winds 10 knots or less becoming northeast.
Partly to mostly cloudy. Waves 1 foot or less.
.SATURDAY...East winds 10 knots or less. Partly sunny. Waves
1 foot or less.
.SATURDAY NIGHT...East winds 10 knots or less becoming south. A
chance of showers and thunderstorms overnight. Waves 1 foot or
less.
.SUNDAY...Southwest winds 10 knots or less becoming west. A
chance of showers and thunderstorms during the day. Waves 1 foot
or less.
.MONDAY...West winds 10 knots or less increasing to 10 to
15 knots. A chance of showers and thunderstorms Monday night.
Waves 2 feet or less.
.TUESDAY...West winds 5 to 15 knots becoming northwest. A chance
of showers during the day. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ043-044-250900-
Hamlin Beach to Mexico Bay along Lake Ontario
including Irondequoit Bay-
1004 PM EDT Thu Jul 24 2025

.REST OF TONIGHT...Southwest winds 5 to 15 knots. A chance of
showers and thunderstorms after midnight. Waves 2 feet or less.
.FRIDAY...West winds 5 to 10 knots. Showers likely with a chance
of thunderstorms in the morning, then a chance of showers in the
afternoon. Waves 2 feet or less.
.FRIDAY NIGHT...West winds 10 knots or less becoming northeast.
Partly to mostly cloudy. Waves 1 foot or less.
.SATURDAY...East winds less than 10 knots becoming northeast.
Partly sunny. Waves 1 foot or less.
.SATURDAY NIGHT...East winds 10 knots or less becoming south. A
chance of showers and thunderstorms overnight. Waves 1 foot or
less.
.SUNDAY...Southwest winds 10 knots or less becoming west. Showers
likely with a chance of thunderstorms during the day, then a
chance of showers Sunday night. Waves 1 foot or less.
.MONDAY...West winds 10 knots or less becoming southwest. A
chance of showers and thunderstorms Monday night. Waves 2 feet or
less.
.TUESDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers and thunderstorms during the day, then a chance of
showers Tuesday night. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

The water temperature off Rochester is 47 degrees.

$$

LOZ045-250900-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
1004 PM EDT Thu Jul 24 2025

.REST OF TONIGHT...Southwest winds 5 to 15 knots. A chance of
showers and thunderstorms after midnight. Waves 1 to 3 feet.
.FRIDAY...West winds 5 to 10 knots. Showers likely with a chance
of thunderstorms in the morning, then a chance of showers in the
afternoon. Waves 2 feet or less.
.FRIDAY NIGHT...West winds 10 knots or less becoming northeast.
Partly cloudy. Waves 1 foot or less.
.SATURDAY...East winds less than 10 knots becoming west. Partly
to mostly sunny. Waves 1 foot or less.
.SATURDAY NIGHT...Light and variable winds becoming south 5 to
10 knots. A chance of showers and thunderstorms overnight. Waves
1 foot or less.
.SUNDAY...South winds 10 knots or less becoming southwest.
Showers likely with a chance of thunderstorms during the day,
then a chance of showers Sunday night. Waves 1 foot or less.
.MONDAY...Southwest winds 10 knots or less. A chance of showers
Monday night. Waves 1 foot or less.
.TUESDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

Radar