New York Harbor

ANZ338 · Coastal Waters Forecast, National Weather Service New York NY · issued Sun, Sep 27, 2:25 PM EDT

Small Craft Advisory in force. Rest of today: E winds 20 to 25 kt with gusts up to 30 kt. Waves 3 to 5 ft, occasionally to 6 ft. Wave Detail: E 4 ft at 5 seconds. Rain. Slight chance of tstms late.

New York Harbor on the map

The zone and the zones around it, tinted where a marine warning or advisory is in force. Tap a neighboring zone to open its forecast.

Gale Warning
Small Craft Advisory

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Now

The nearest stations reporting each, as of Sun, Sep 27, 2:54 PM EDT.

Wind: E 10 kt, gusts 15 kt at SDHN4
Water: 63°F at SDHN4

Alerts in force

Small Craft Advisory from Sun, Sep 27, 2:18 PM EDT until Mon, Sep 28, 4:00 PM EDT

Small Craft Advisory issued September 27 at 2:18PM EDT until September 28 at 4:00PM EDT by NWS Upton NY

The full text

* WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt. Seas
3 to 5 feet on the Sound.

* WHERE...Long Island Sound, New York Harbor, Peconic and
Gardiners Bays, and South Shore Bays from Jones Inlet through
Shinnecock Bay.

* WHEN...Until 4 PM EDT Monday.

* IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

The forecast

Coastal Waters Forecast from National Weather Service New York NY, issued Sun, Sep 27, 2:25 PM EDT, valid until Mon, Sep 28, 3:15 AM EDT. Wind in knots, seas in feet.

SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON

Rest of today: E winds 20 to 25 kt with gusts up to 30 kt. Waves 3 to 5 ft, occasionally to 6 ft. Wave Detail: E 4 ft at 5 seconds. Rain. Slight chance of tstms late.
Tonight: NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Waves 3 to 5 ft, occasionally to 6 ft. Wave Detail: E 4 ft at 5 seconds. Rain and slight chance of tstms in the evening, then rain after midnight.
Monday: NE winds 15 to 20 kt with gusts up to 25 kt, becoming N 10 to 15 kt in the afternoon. Waves 2 to 4 ft, occasionally to 5 ft. Wave Detail: NE 3 ft at 4 seconds. Rain, mainly in the morning.
Monday night: NW winds 5 to 10 kt. Waves 1 to 2 ft. Wave Detail: NE 2 ft at 4 seconds. Slight chance of rain in the evening.
Tuesday: NW winds around 5 kt. Waves 1 to 2 ft in the morning, then 1 ft or less. Wave Detail: E 1 ft at 3 seconds.
Tuesday night: NW winds around 5 kt. Waves 1 ft or less.
Wednesday: NW winds around 5 kt, becoming SW in the afternoon. Waves 1 ft or less.
Wednesday night: SW winds 5 to 10 kt. Waves 1 ft or less.
Thursday: SW winds 5 to 10 kt. Waves 1 ft or less.
Thursday night: SW winds 10 to 15 kt. Waves 1 to 2 ft.
Friday: W winds 5 to 10 kt. Waves 1 to 2 ft.
Friday night: NW winds 5 to 10 kt. Waves 1 to 2 ft.

Winds and waves may be higher in and near tstms.

Synopsis

Synopsis for the Long Island and Connecticut coastal waters

Low pres over NJ will track slowly NE tonight and Mon, and weaken as it does. High pres then builds towards the waters on Tue, over the waters on Wed, and offshore Thu and Fri.

Buoys and stations nearby

The latest report from each station within reach of the zone, nearest first. Distances in nautical miles from the middle of the zone.

Station	Distance	Wind	Water	Air	Pressure	Reported
SDHN4 8531680 - Sandy Hook, NJ	5 nm	E 10 kt, gusts 15	63°F	63°F	1004.7 hPa	Sun, Sep 27, 2:54 PM EDT
MHRN6 8519532 - Mariners Harbor, NY	8 nm	ENE 13 kt, gusts 16				Sun, Sep 27, 2:54 PM EDT
ROBN4 8530973 - Robbins Reef, NJ	8 nm	ENE 13 kt, gusts 18		65°F	1004.7 hPa	Sun, Sep 27, 2:54 PM EDT
BATN6 8518750 - The Battery, NY	11 nm		67°F	64°F	1004.3 hPa	Sun, Sep 27, 2:54 PM EDT
44065 New York Harbor Entrance - 15 NM SE of Breezy Point , NY	20 nm	ESE 17 kt, gusts 21	66°F	64°F	1004.3 hPa	Sun, Sep 27, 3:10 PM EDT
KPTN6 8516945 - Kings Point, NY	22 nm	NE 9 kt, gusts 16		63°F	1004.7 hPa	Sun, Sep 27, 2:54 PM EDT

The past year

Warnings, watches and advisories the National Weather Service issued for this zone over the past 12 months, from the Iowa Environmental Mesonet’s archive.

Product	Issued	Most recent
Special Marine Warning	31	Tue, Sep 1, 2026, 6:53 PM EDT
Gale Warning	19	Fri, Sep 25, 2026, 2:00 PM EDT
Gale Watch	16	Mon, Mar 16, 2026, 6:00 AM EDT
Severe Thunderstorm Watch	10	Tue, Sep 1, 2026, 4:33 PM EDT
Storm Watch	1	Wed, Nov 5, 2025, 6:00 PM EST
Tornado Watch	1	Tue, Jul 21, 2026, 2:08 PM EDT
Small Craft Advisory	77	Sun, Sep 27, 2026, 2:18 PM EDT
Dense Fog Advisory	12	Sun, May 24, 2026, 11:46 PM EDT
Freezing Spray Advisory	2	Sat, Feb 7, 2026, 1:00 PM EST
Low Water Advisory	1	Thu, Nov 6, 2025, 12:00 AM EST

What this means

Marine forecasts give wind in knots (1 knot is 1.15 mph) and seas in feet, except the high seas forecasts, which give seas in meters. Seas are the significant wave height, the average of the highest third of the waves; individual waves may be more than twice that. On the Great Lakes the forecast gives waves, not seas. "Wave Detail" splits the seas into the wind waves and each swell, with its direction and period.

Each coastal office writes a Coastal Waters Forecast for the bays, sounds and ocean out to 20 to 60 nautical miles, or on the Great Lakes a Nearshore Marine Forecast within 5 nautical miles of shore; the Open Lakes Forecast covers the rest of each lake. The Ocean Prediction Center and the National Hurricane Center write the Offshore Waters Forecasts out to about 250 nautical miles, and the High Seas Forecasts beyond. Forecasts are issued at least twice a day and updated when they go wrong.

Small Craft Advisory: Winds or conditions hazardous to small boats. The thresholds are set by each NWS region: typically sustained winds or frequent gusts of 20 to 25 knots up to 33 knots, and seas of 5 to 7 feet or more.
Gale Warning: Sustained winds or frequent gusts of 34 to 47 knots, not from a tropical cyclone.
Storm Warning: Sustained winds or frequent gusts of 48 to 63 knots, not from a tropical cyclone.
Hurricane Force Wind Warning: Sustained winds or frequent gusts of 64 knots or more, not from a tropical cyclone.
Special Marine Warning: A thunderstorm or squall over the water with winds or gusts of 34 knots or more, hail of 3/4 inch or more, or a waterspout, for up to two hours.
Hazardous Seas Warning: Wave heights or steepness at or above the office’s warning threshold, when the wind alone does not warrant a warning.
Heavy Freezing Spray Warning: Spray freezing on a vessel at 2 cm (3/4 inch) an hour or more.
Tropical Storm and Hurricane Warnings: Tropical storm (34 to 63 knots) or hurricane (64 knots or more) conditions expected within 36 hours. Watches: possible within 48 hours.

Nearby

Open the live map with marine zones and buoys The hour-by-hour forecast for the middle of the zone Coney Island and Brooklyn Beaches Rockaway Beach and Southern Queens Sandy Hook and Eastern Monmouth Beaches Every Atlantic Coast zone

Sources

Coastal Waters Forecast CWFOKX from National Weather Service New York NY, issued Sun, Sep 27, 2:25 PM EDT. Original at NWS. Buoy reports from the National Data Buoy Center. Past products from the Iowa Environmental Mesonet. Zone outlines from the NWS marine and offshore zone boundaries. Warnings and advisories from the NWS API, read 19:43 UTC. All public domain, from the National Weather Service.