Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

NZUS99 KBUF 151752
GLFLOT

Experimental Tabular Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
152 PM EDT Fri Aug 15 2025

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 30.1 inch high will build into Quebec and New England
through Saturday, before a 29.8 inch wave of low pressure and cold
front move across the lake Sunday. A 30.2 inch surface high will
then ridge southward across the lake Monday into Tuesday, then move
east of the lake on Wednesday.

LOZ062-160200-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
152 PM EDT Fri Aug 15 2025

.Tonight...
Weather.............Mostly clear.
Sfc winds...........East 10 to 15 knots becoming southeast 5 to 10
                              knots after midnight.
100-ft winds........East 15 to 20 knots becoming southeast 10 to 15
                              knots after midnight.
Sig waves...........2 to 4 feet.

.SATURDAY...
Weather.............Sunny.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.

.SATURDAY NIGHT...
Weather.............Partly cloudy, then mostly cloudy with chance
                              of showers after midnight.
Sfc winds...........Southeast 5 to 10 knots becoming southwest 10
                              to 15 knots after midnight.
100-ft winds........Southeast 10 to 15 knots becoming southwest 15
                              to 20 knots after midnight.
Sig waves...........2 to 4 feet.

.SUNDAY...
Weather.............Partly sunny with chance of showers.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots becoming north in the
                              afternoon.
Sig waves...........2 to 4 feet.

.SUNDAY NIGHT...
Weather.............Partly cloudy with chance of showers, then
                              partly cloudy after midnight.
Sfc winds...........Northeast 20 to 25 knots.
100-ft winds........Northeast to 30 knots.
Sig waves...........3 to 5 feet building to 5 to 7 feet after
                              midnight.
Ocnl waves..........Around 5 feet building to around 8 feet after
                              midnight.

.FORECAST DAYS 3 THROUGH 5......
.MONDAY...East winds 15 to 20 knots. Waves 3 to 5 feet.
.TUESDAY...Chance of showers. East winds 15 to 20 knots. Waves
2 to 4 feet.
.WEDNESDAY...Chance of showers in the morning. East winds 10 to
15 knots. Waves 2 to 4 feet.

$$

LOZ063>065-160200-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence
River-
152 PM EDT Fri Aug 15 2025

.Tonight...
Weather.............Mostly clear.
Sfc winds...........North 5 to 10 knots becoming east after
                              midnight.
100-ft winds........North 10 to 15 knots becoming east after
                              midnight.
Sig waves...........1 to 3 feet.

.SATURDAY...
Weather.............Sunny.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.

.SATURDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds becoming southwest 10
                              to 15 knots after midnight.
100-ft winds........Light and variable winds becoming southwest 15
                              to 20 knots after midnight.
Sig waves...........2 to 4 feet.

.SUNDAY...
Weather.............Partly sunny with chance of showers.
Sfc winds...........Southwest 10 to 15 knots becoming north 15 to
                              20 knots in the afternoon.
100-ft winds........Southwest 15 to 20 knots becoming north 20 to
                              25 knots in the afternoon.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.

.SUNDAY NIGHT...
Weather.............Partly cloudy with chance of showers, then
                              partly cloudy after midnight.
Sfc winds...........Northeast 20 to 25 knots.
100-ft winds........Northeast to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.

.FORECAST DAYS 3 THROUGH 5......
.MONDAY...Northeast winds 15 to 20 knots. Waves 3 to 5 feet.
.TUESDAY...Chance of showers. Northeast winds 10 to 15 knots.
Waves 2 to 4 feet.
.WEDNESDAY...Chance of showers in the morning. Southeast winds
10 to 15 knots. Waves 2 to 4 feet.

$$

LOZ061-160200-
MAFOR 1521/
ONTARIO WEST 1/2 12210 13300 11400 11100 11200. Waves 2 feet or
less.

ONTARIO EAST 1/2 11100 11200 14300 11200 11800. Waves 1 foot or
less.

$$