Active Weather Alerts
Special Marine Warning
Issued: 9:33 AM Aug. 13, 2026 – National Weather Service
The National Weather Service in Upton NY has issued a * Special Marine Warning for... Central Long Island Sound... * Until 630 AM EDT. * At 533 AM EDT, a severe thunderstorm was located near Central Long Island Sound, moving east at 30 knots. HAZARD...Wind gusts in excess of 50 knots. SOURCE...Radar indicated. IMPACT...Boats could suffer significant structural damage in high winds. Small craft could capsize in suddenly higher waves. * The severe thunderstorm will be near... Central Long Island Sound around 540 AM EDT. Horton Point and Mattituck Inlet around 555 AM EDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters should seek safe harbor immediately until this storm passes. Wind gusts in excess of 50 knots, high waves, lightning, and heavy rain are expected with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && HAIL...0.00IN; WIND...50KTS
Marine Weather Statement
Issued: 9:16 AM Aug. 13, 2026 – National Weather Service
...A STRONG THUNDERSTORM OVER THE WATERS... The areas affected include... Central Long Island Sound... Peconic and Gardiners Bays... At 516 AM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located near Mouth of the Housatonic River, moving east at 30 knots. The strong thunderstorm will be near... Central Long Island Sound around 535 AM EDT. Horton Point and Mattituck Inlet around 550 AM EDT. Dering Harbor, Shelter Island Sound, and Shelter Island around 600 AM EDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. &&
Coastal Flood Statement
Issued: 7:32 AM Aug. 13, 2026 – National Weather Service
...COASTAL FLOOD STATEMENT IN EFFECT THIS EVENING... * WHAT...Up to 1/2 ft of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Southern Nassau County. * WHEN...This evening. * IMPACTS...Brief minor flooding of the most vulnerable locations near the waterfront and shoreline. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. &&
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