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Elev 26 ft, 40.71 °N, 73.31 °W

West Islip, NY Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: West Islip, NY
Elevation: 26ft
Nearby Weather Stations

Active Weather Alerts

Special Marine Warning
Issued: 10:28 PM Aug. 20, 2026 – National Weather Service
The National Weather Service in Upton NY has issued a

* Special Marine Warning for...

Sandy Hook NJ to Fire Island Inlet NY out 20 NM...
Long Island South Shore Bays...

* Until 730 PM EDT.

* At 627 PM EDT, a strong thunderstorm was located near Jamaica Bay,
moving east at 25 knots.

HAZARD...Wind gusts 34 knots or greater.

SOURCE...Radar indicated.

IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.

* The strong thunderstorm will be near...
Barnum Island and Island Park around 635 PM EDT.
Jones Inlet and Middle Bay around 640 PM EDT.
Jones Beach around 645 PM EDT.
East Bay around 650 PM EDT.
South Oyster Bay around 700 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Boaters should seek safe harbor immediately until this storm passes.
Wind gusts 34 knots or greater, 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...>34KTS

Flood Watch
Issued: 6:16 PM Aug. 20, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT UNTIL 2 AM EDT FRIDAY...

* WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of northeast New Jersey, including the following
areas, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern
Union, Hudson, Western Bergen, Western Essex, Western Passaic and
Western Union and southeast New York, including the following
areas, Bronx, Kings (Brooklyn), New York (Manhattan), Northern
Nassau, Northern Queens, Northwest Suffolk, Richmond (Staten
Island), Southern Nassau, Southern Queens, Southern Westchester and
Southwest Suffolk.

* WHEN...Until 2 AM EDT Friday.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
- A period of heavy rainfall is possible as showers and a few
thunderstorms move through the area late this afternoon and
evening. Peak hourly rainfall rates could reach 2 to 2.5 inches.
Average rainfall amounts are expected to be between 1.5 and 2.5
inches with locally higher amounts possible.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

&&

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