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STORM WATCH: Rain tapers off overnight; flooding and storm damage linger

Travel can be difficult and dangerous overnight due to storm-related debris and areas of scattered flooding gradually improving into Friday morning.

Matt Hammer

Aug 20, 2026, 11:56 PM

Updated

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Long Island weather alerts

STORM WATCH: RAIN EXITS, IMPACTS LINGER

Earlier waterspouts prompted brief tornado warnings shortly before 7:00 pm in southwestern Nassau near Atlantic Beach, Lawrence and Island Park. The National Weather Service is reviewing these for whether or not it became an official tornado after coming on land. Either way, extensive damage was caused from intense wind from a nearby vortex, primarily in Atlantic Beach. This impact was extremely short-lived an isolated. The more widespread Long Island impact was flooding caused by up to around three inches of rain.

The rain is ending from west to east overnight, but areas of flooding can linger. Keep an eye out for ponding and large puddles if you have to travel overnight and during your travel Friday morning.

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STORM WATCH FUTURE RADAR

Here is a look at the latest future radar for Long Island showing the improving weather for Long Island.

BOAT AND BEACH

Boating and heading to the beach will be dangerous this evening with heavy rain and a few thunderstorms around. Please avoid these activities tonight. Anyone heading to the beach anytime should check the latest rip current statements before getting in the water. Check out more of the local beach weather forecast and tides here.

Long Island Rip Currents
Long Island Tides

Babylon, NY [8515421]

Long Island tide predictions for today and tomorrow

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Tide & Water Summary

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Today’s Tides

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Tomorrow’s Tides

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Tide predictions and recent observations are provided by NOAA CO-OPS. Tide heights are in feet above mean lower low water (MLLW). Many subordinate stations provide tide predictions but do not report live water level, temperature or pressure observations.

EXTENDED FORECAST

OVERNIGHT: Rain is ending from west to east, but a few downpours will linger over especially eastern Suffolk County overnight and into early Friday. Please use caution when traveling. Lows near the mid-60s.

FRIDAY: Partly sunny to mostly cloudy with a chance for a few spotty showers. Highs around 78. Lows near 67.

SATURDAY: Mostly cloudy with periods of rain likely, tapering off into the evening and night. Highs around 77. Lows near 68.

SUNDAY: Clouds with a few breaks of sun. Scattered showers and a thunderstorm possible. The timing of any weekend wet weather will become clearer over the next couple of days. Highs around 81. Lows near 66.

MONDAY: Mostly sunny. Highs around 81 degrees. Lows near 63 degrees.

TUESDAY: Mostly sunny. Highs around 80 degrees. Lows near 64 degrees.

WEDNESDAY: Mainly sunny. Highs around 81 degrees. Lows near 65 degrees.

THURSDAY: Partly sunny. Highs around 80 degrees. Lows near 69 degrees.

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