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STORM WATCH: Gusty winds and potential coastal flooding before weekend storm arrives

Dangerous surf and minor high-tide coastal flooding develops today and worsens into weekend. Strong winds and heavy rain threat for weekend with nor'easter.

Rich Hoffman

Sep 23, 2026, 6:04 AM

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STORM WATCH: TRACKING WEEKEND COASTAL STORM

NASSAU COUNTY IMPACTS:
Coastal Flooding likely during high tide times from today into weekend.
FRIDAY: Mostly Cloudy - Winds North-Northeast gusts 30 to 35 mph. Slight chance of showers late in day.
SATURDAY - Mostly Cloudy - 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 30 to 35 mph.

SUFFOLK COUNTY IMPACTS:
Coastal Flooding and Beach Erosion likely during high tide times from today into weekend.
FRIDAY: Mostly Cloudy - Winds North-Northeast gusts 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.
SUNDAY- Cloudy with periods of rain, some pockets of heavy rain. Rain totals 1 to 2 inches. Wind Gusts 30 to 45 mph.

We’re tracking gusty winds and a developing coastal storm as we head toward the weekend, but today will stay dry. Look for partly sunny skies with breezy conditions and afternoon temperatures in the mid to upper 60s. Along the south shore, keep an eye on the high-tide cycles, where the persistent northeasterly wind could lead to some minor coastal flooding. Keep an eye on the tides and shoreline forecasts through the weekend HERE.

Long Island Today forecast

Tonight turns mostly cloudy with lows in the 50s. Winds will remain a factor, with gusts around 25 to 35 mph. Shoreline communities will need to continue watching the high tides, as that persistent northeast wind pushes water toward the coast and could produce additional minor coastal flooding. Thursday is another mainly dry day with partly sunny skies, temperatures in the 60s and wind gusts approaching 35 mph. Minor coastal flooding will remain possible around high tide along the North Shore, South Shore and East End.

Long Island tonight forecast

The coastal storm gets a little closer Friday, bringing mostly cloudy skies and perhaps a passing shower, but much of the day should remain dry. Highs will stay in the 60s, while northeast winds could gust 30 to 40 mph, especially across the East End.

Conditions begin to deteriorate Saturday as showers become more likely, initially light during the morning before becoming more widespread during the afternoon. Temperatures will remain in the 60s, with northeast winds gusting 30 to 45 mph at times.

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The bigger concern this weekend will be along the shoreline. Coastal flooding and beach erosion will be possible around the Saturday and Sunday high-tide cycles as persistent onshore winds continue. Saturday night looks windy with periods of rain and lows in the 50s. Scattered showers and gusty winds continue Sunday, with highs in the 60s. Anyone living along the coast should closely monitor the forecast, especially with several high-tide cycles potentially producing coastal flooding and additional beach erosion. Know your high tide times for today into the weekend.


Long Island 10 day forecast

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