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STORM WATCH: Nor'easter threatens Long Island with rough surf, wind damage and rain

Dangerous waves, beach erosion and minor tidal flooding are ongoing and worsening this week ahead of a nearby nor'easter which can still bring strong wind and rain to Long Island, depending on the exact storm track.

Matt Hammer

Sep 23, 2026, 4:53 PM

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STORM WATCH: NEARBY WEEKEND NOR'EASTER

Long Island is already seeing the start of the coastal impacts of a developing nor'easter with dangerous ocean waves and minor high tide coastal flooding. Those coastal impacts will get worse from now and into the weekend.

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Actual land impacts for Nassau and Suffolk counties still highly depend on the exact storm track, which is still being determined, but I would begin to plan ahead for a wet and windy weekend. The exact wind strength and rain amounts will become clearer as better weather data comes in the rest of the week.

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With an offshore storm like this, any small change west or east in the storm's track can have big implications on the forecast. Stay with the News 12 Storm Watch Team on-air, social media and the News 12 app for frequent updates on everything you need to know and prepare for as the nor'easter develops and strengthens offshore over the next few days.

You can also see the tides and shoreline forecasts through the weekend HERE.

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LATEST HYPERLOCAL NOR'EASTER FORECAST

NASSAU COUNTY: Coastal flooding likely during high tide times from this evening and into the weekend.
- FRIDAY: Mostly cloudy and windy. Winds north-northeast, gusts of 30 to 35 mph with a slight chance of showers late in the day.
- SATURDAY: Mostly cloudy with a chance of showers in the morning, steady showers towards the evening. Winds gusting 30 to 35 some gusts to 40 mph possible.
- SUNDAY: Cloudy with periods of rain. Rain totals under 1 inch. Wind gusts of 30 to 35 mph.

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SUFFOLK COUNTY: Coastal Flooding and Beach Erosion likely during high tide times from today into the weekend.
- FRIDAY: Mostly cloudy - Winds north-northeast. Gusts of 30 to 40 mph. Chance of a few late-day showers.
- SATURDAY - Cloudy - Chance of showers in the morning, Periods of rain developing in the afternoon. Some moderate rain possible towards evening. Winds gusting 35 to 45 mph.
- SUNDAY - Cloudy with periods of rain, some pockets of heavy rain. Rain totals 1 to 2 inches. Wind gusts of 30 to 45 mph.

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EXTENDED FORECAST

TONIGHT: Variably cloudy and windy with a slight chill into Thursday morning. Lows will be around the lower 50s. Wind: northeast 15 to 35 mph.

THURSDAY: Partly sunny, windy and cool. Highs around the upper 60s. Wind: northeast 15 to 35 mph.

FRIDAY: STORM WATCH - Mostly cloudy and windy with continued rough surf, minor to moderate coastal flooding during high tide and an increasing chance for scattered showers. Highs around 66 degrees. Lows near 54 degrees.

SATURDAY: STORM WATCH - Mostly cloudy and windy with periods of moderate rain likely. Wind gusts may exceed 40-50 mph, mainly in Suffolk County. Scattered power outages likely. Highs around 65 degrees. Lows near 54 degrees.

SUNDAY: STORM WATCH - Mostly cloudy and windy, with periods of moderate to heavy rain possible. Wind gusts may exceed 40-50 mph, mainly in Suffolk County. Scattered power outages likely. Highs around 66 degrees. Lows near 54 degrees.

MONDAY: Showers can linger early. Otherwise, developing sun. Highs around 68 degrees. Lows near 55 degrees.

TUESDAY: Mostly sunny. Highs around 70 degrees. Lows near 58 degrees.

WEDNESDAY: Mostly sunny. Highs around 70 degrees. Lows near 58 degrees.

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