Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

FZUS51 KBUF 130253
NSHBUF

Experimental Tabular Nearshore Marine Forecast
National Weather Service Buffalo NY
1053 PM EDT Wed Aug 12 2026

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.

LEZ020-130800-
Upper Niagara River and Buffalo Harbor-
1053 PM EDT Wed Aug 12 2026

.Overnight...
Weather.............Partly cloudy with chance of showers, then
                              partly cloudy after midnight.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.

.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........Light and variable winds becoming northwest 5
                              to 10 knots early in the afternoon.
100-ft winds........Light and variable winds becoming northwest 10
                              to 15 knots early in the afternoon.

.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.

.FRIDAY...
Weather.............Mostly sunny.
Sfc winds...........Light and variable winds becoming north 5 to 10
                              knots early in the afternoon.
100-ft winds........Light and variable winds becoming north 10 to
                              15 knots early in the afternoon.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.

.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...Light and variable winds.
.SUNDAY...Chance of showers. chance of thunderstorms. West winds
5 to 10 knots.
.MONDAY...Light and variable winds.

$$

LOZ030-130800-
Lower Niagara River-
1053 PM EDT Wed Aug 12 2026

.Overnight...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.

.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........Light and variable winds becoming northwest 5
                              to 10 knots early in the afternoon.
100-ft winds........Light and variable winds becoming northwest 10
                              to 15 knots early in the afternoon.

.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.

.FRIDAY...
Weather.............Mostly sunny.
Sfc winds...........Light and variable winds becoming north 5 to 10
                              knots early in the afternoon.
100-ft winds........Light and variable winds becoming north 10 to
                              15 knots early in the afternoon.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.

.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...East winds 5 to 10 knots.
.SUNDAY...Chance of showers. chance of thunderstorms in the
afternoon and evening. West winds 5 to 10 knots.
.MONDAY...Northwest winds 5 to 10 knots.

$$

LEZ040-041-130800-
Lake Erie nearshore waters from Ripley to Dunkirk-
Lake Erie nearshore waters from Dunkirk to Buffalo-
1053 PM EDT Wed Aug 12 2026

.Overnight...
Weather.............Mostly cloudy with chance of showers and
                              thunderstorms, then mostly cloudy after
                              midnight.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.

.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.

.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.

.FRIDAY...
Weather.............Mostly sunny.
Sfc winds...........Light and variable winds becoming north 5 to 10
                              knots early in the afternoon.
100-ft winds........Light and variable winds becoming north 10 to
                              15 knots early in the afternoon.
Sig waves...........2 feet or less.

.FRIDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northeast 5 to 10 knots becoming east after
                              midnight.
100-ft winds........Northeast 10 to 15 knots becoming east after
                              midnight.
Sig waves...........2 feet or less.

.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...Chance of showers after midnight. East winds 5 to
10 knots. Waves 2 feet or less.
.SUNDAY...Chance of showers in the morning, then showers likely
in the afternoon and evening. chance of thunderstorms. West winds
5 to 10 knots. Waves 2 feet or less.
.MONDAY...Northwest winds 5 to 10 knots. Waves 2 feet or less.

$$

LOZ042-130800-
Lake Ontario nearshore waters from the Niagara River to Hamlin
Beach-
1053 PM EDT Wed Aug 12 2026

.Overnight...
Weather.............Partly cloudy.
Sfc winds...........Southwest 5 to 10 knots becoming northwest
                              after midnight.
100-ft winds........Southwest 10 to 15 knots becoming northwest
                              after midnight.
Sig waves...........2 feet or less.

.THURSDAY...
Weather.............Mostly sunny.
Sfc winds...........West 5 to 10 knots.
100-ft winds........West 10 to 15 knots.
Sig waves...........2 feet or less.

.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northwest 5 to 10 knots.
100-ft winds........Northwest 10 to 15 knots.
Sig waves...........2 feet or less.

.FRIDAY...
Weather.............Sunny.
Sfc winds...........Light and variable winds becoming north 5 to 10
                              knots in the late morning and afternoon.
100-ft winds........Light and variable winds becoming north 10 to
                              15 knots in the late morning and afternoon.
Sig waves...........2 feet or less.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northeast 5 to 10 knots early in the evening
                              becoming light and variable, then becoming east
                              5 to 10 knots after midnight.
100-ft winds........Northeast 10 to 15 knots early in the evening
                              becoming light and variable, then becoming east
                              10 to 15 knots after midnight.
Sig waves...........2 feet or less.

.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...East winds 5 to 10 knots. Waves 2 feet or less.
.SUNDAY...Chance of showers. chance of thunderstorms in the
afternoon and evening. Northwest winds 5 to 10 knots. Waves
2 feet or less.
.MONDAY...Northwest winds 5 to 10 knots. Waves 2 feet or less.

$$

LOZ043-130800-
Lake Ontario nearshore waters from Hamlin Beach to Sodus Bay-
1053 PM EDT Wed Aug 12 2026

.Overnight...
Weather.............Partly cloudy.
Sfc winds...........Southwest 5 to 10 knots becoming west after
                              midnight.
100-ft winds........Southwest 10 to 15 knots becoming west after
                              midnight.
Sig waves...........2 feet or less.

.THURSDAY...
Weather.............Mostly sunny.
Sfc winds...........Northwest 5 to 10 knots.
100-ft winds........Northwest 10 to 15 knots.
Sig waves...........2 feet or less.

.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northwest 5 to 10 knots.
100-ft winds........Northwest 10 to 15 knots.
Sig waves...........2 feet or less.

.FRIDAY...
Weather.............Sunny.
Sfc winds...........Light and variable winds becoming north 5 to 10
                              knots in the late morning and afternoon.
100-ft winds........Light and variable winds becoming north 10 to
                              15 knots in the late morning and afternoon.
Sig waves...........2 feet or less.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds becoming east 5 to 10
                              knots after midnight.
100-ft winds........Light and variable winds becoming east 10 to 15
                              knots after midnight.
Sig waves...........2 feet or less.

.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...East winds 5 to 10 knots. Waves 2 feet or less.
.SUNDAY...Chance of showers. chance of thunderstorms. Northwest
winds 5 to 10 knots. Waves 2 feet or less.
.MONDAY...Northwest winds 5 to 10 knots. Waves 1 to 3 feet.

$$

LOZ044-130800-
Lake Ontario nearshore waters from Sodus Bay to Mexico Bay-
1053 PM EDT Wed Aug 12 2026

.Overnight...
Weather.............Mostly cloudy with chance of showers and
                              thunderstorms, then mostly cloudy after
                              midnight.
Sfc winds...........Southwest 5 to 10 knots.
100-ft winds........Southwest 10 to 15 knots.
Sig waves...........2 feet or less.

.THURSDAY...
Weather.............Mostly sunny.
Sfc winds...........Northwest 5 to 10 knots.
100-ft winds........Northwest 10 to 15 knots.
Sig waves...........2 feet or less.

.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northwest 5 to 10 knots until early morning
                              becoming light and variable.
100-ft winds........Northwest 10 to 15 knots until early morning
                              becoming light and variable.
Sig waves...........1 to 3 feet.

.FRIDAY...
Weather.............Sunny.
Sfc winds...........Light and variable winds becoming north 5 to 10
                              knots in the late morning and afternoon.
100-ft winds........Light and variable winds becoming north 10 to
                              15 knots in the late morning and afternoon.
Sig waves...........2 feet or less.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........North 5 to 10 knots becoming northeast after
                              midnight.
100-ft winds........North 10 to 15 knots becoming northeast after
                              midnight.
Sig waves...........2 feet or less.

.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...East winds 5 to 10 knots. Waves 2 feet or less.
.SUNDAY...Chance of showers. West winds 5 to 10 knots. Waves
2 feet or less.
.MONDAY...Northwest winds 5 to 10 knots. Waves 1 to 3 feet.

$$

LOZ045-130800-
Lake Ontario nearshore waters from Mexico Bay to the Saint
Lawrence River-
1053 PM EDT Wed Aug 12 2026

.Overnight...
Weather.............Mostly cloudy with chance of showers and
                              thunderstorms, then mostly cloudy after
                              midnight.
Sfc winds...........Southwest 5 to 10 knots in the late evening and
                              early morning becoming light and variable.
100-ft winds........Southwest 10 to 15 knots in the late evening
                              and early morning becoming light and variable.
Sig waves...........2 feet or less.

.THURSDAY...
Weather.............Mostly sunny.
Sfc winds...........Light and variable winds becoming west 10 to 15
                              knots in the late morning and afternoon.
100-ft winds........Light and variable winds becoming west 15 to 20
                              knots in the late morning and afternoon.
Sig waves...........2 feet or less.

.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........West 5 to 10 knots early in the evening
                              becoming light and variable.
100-ft winds........West 10 to 15 knots early in the evening
                              becoming light and variable.
Sig waves...........2 feet or less.

.FRIDAY...
Weather.............Sunny.
Sfc winds...........Northeast 5 to 10 knots becoming northwest
                              early in the afternoon.
100-ft winds........Northeast 10 to 15 knots becoming northwest
                              early in the afternoon.
Sig waves...........2 feet or less.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........North 5 to 10 knots.
100-ft winds........Northeast 10 to 15 knots.
Sig waves...........2 feet or less.

.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...Northeast winds 5 to 10 knots. Waves 2 feet or less.
.SUNDAY...Chance of showers. Southwest winds 5 to 10 knots. Waves
2 feet or less.
.MONDAY...Northwest winds 5 to 10 knots. Waves 2 feet or less.

$$