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Station 44025 (LLNR 830) - LONG ISLAND - 30 NM South of Islip, NY

Owned and maintained by National Data Buoy Center
3-meter discus buoy
AMPS payload
40.251 N 73.164 W (40°15'3" N 73°9'52" W)

Site elevation: sea level
Air temp height: 4 m above site elevation
Anemometer height: 5 m above site elevation
Barometer elevation: sea level
Sea temp depth: 0.6 m below water line
Water depth: 36.3 m
Watch circle radius: 83 yards

Right whales are active off NY from November to April. Speed restrictions of 10 knots apply to vessels 65 feet or greater in specific areas along the mid-Atlantic coast. To learn more about right whales and rules protecting them, go to: http://www.nmfs.noaa.gov/pr/shipstrike

Latest NWS Marine Forecast 1 and Latest NWS Marine Forecast 2

Important Notice to Mariners

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Disclaimer

Conditions at 44025 as of
(9:50 am EDT)
1350 GMT on 07/22/2018:
Unit of Measure: Time Zone: Click on the graph icon in the table below to see a time series plot of the last five days of that observation.
	Wind Direction (WDIR):	S ( 170 deg true )
	Wind Speed (WSPD):	13.6 kts
	Wind Gust (GST):	15.5 kts
	Wave Height (WVHT):	9.5 ft
	Dominant Wave Period (DPD):	10 sec
	Average Period (APD):	7.0 sec
	Mean Wave Direction (MWD):	S ( 176 deg true )
	Atmospheric Pressure (PRES):	29.93 in
	Pressure Tendency (PTDY):	+0.08 in ( Rising )
	Air Temperature (ATMP):	73.6 °F
	Water Temperature (WTMP):	70.2 °F
	Wind Speed at 10 meters (WSPD10M):	13.6 kts
	Wind Speed at 20 meters (WSPD20M):	13.6 kts
	Combined plot of Wind Speed, Gust, and Air Pressure

Continuous Winds
TIME (EDT)	WDIR	WSPD
9:50 am	SSE ( 167 deg )	12.6 kts
9:40 am	S ( 170 deg )	13.4 kts
9:30 am	S ( 170 deg )	12.2 kts
9:20 am	S ( 170 deg )	12.0 kts
9:10 am	SSE ( 167 deg )	10.9 kts
9:00 am	SSE ( 168 deg )	10.7 kts

Supplemental Measurements
Highest 1-minute Wind Speed
Time (EDT)		WSPD		WDIR
9:35 am		13.6 kts		S ( 170 deg true )

Peak gust during the measurement hour
TIME (EDT)	GDR	GST
9:31 am	S ( 170 deg )	17.5 kts

Previous observations

MM	DD	TIME (EDT)	WDIR	WSPD kts	GST kts	WVHT ft	DPD sec	APD sec	MWD	PRES in	PTDY in	ATMP °F	WTMP °F	DEWP °F	SAL psu	VIS nmi	TIDE ft
07	22	8:50 am	S	11.7	13.6	9.5	11	6.9	SSE	29.91	+0.09	73.2	69.6	-	-	-	-
07	22	7:50 am	SSE	13.6	17.5	10.5	10	7.1	S	29.88	+0.08	72.9	69.1	-	-	-	-
07	22	6:50 am	SSE	15.5	19.4	11.2	10	7.0	S	29.85	+0.06	72.7	68.7	-	-	-	-
07	22	5:50 am	SSE	19.4	23.3	9.8	7	6.4	ESE	29.82	+0.02	72.3	68.7	-	-	-	-
07	22	4:50 am	SSE	19.4	25.3	8.2	7	5.7	ESE	29.81	-0.01	72.5	68.7	-	-	-	-
07	22	3:50 am	SE	21.4	27.2	8.9	7	5.7	ESE	29.79	-0.06	73.4	69.1	-	-	-	-
07	22	2:50 am	ESE	23.3	29.1	8.5	7	5.7	ESE	29.80	-0.06	73.6	69.4	-	-	-	-
07	22	1:50 am	E	23.3	29.1	8.2	7	5.4	ESE	29.82	-0.08	73.2	69.8	-	-	-	-
07	22	12:50 am	ESE	23.3	27.2	8.9	7	5.6	ESE	29.85	-0.06	73.6	70.2	-	-	-	-
07	21	11:50 pm	ESE	23.3	27.2	7.9	7	5.4	ESE	29.86	-0.06	73.6	70.5	-	-	-	-
07	21	10:50 pm	ESE	21.4	27.2	7.5	7	5.5	ESE	29.90	-0.04	73.4	70.9	-	-	-	-
07	21	9:50 pm	ESE	21.4	27.2	7.5	7	5.3	E	29.92	-0.04	73.0	71.2	-	-	-	-
07	21	8:50 pm	E	23.3	29.1	8.2	6	5.3	E	29.93	-0.04	72.1	71.4	-	-	-	-
07	21	7:50 pm	E	25.3	29.1	6.9	6	5.1	E	29.93	-0.05	71.2	71.6	-	-	-	-
07	21	6:50 pm	E	23.3	29.1	6.2	6	4.9	E	29.95	-0.04	71.1	71.6	-	-	-	-
07	21	5:50 pm	E	23.3	27.2	5.9	5	4.7	E	29.97	-0.05	70.7	71.6	-	-	-	-
07	21	4:50 pm	E	23.3	27.2	4.9	5	4.5	ESE	29.98	-0.05	70.3	71.8	-	-	-	-
07	21	3:50 pm	E	19.4	23.3	4.6	5	4.5	ESE	30.00	-0.06	70.3	72.1	-	-	-	-
07	21	2:50 pm	E	19.4	23.3	4.3	5	4.2	E	30.02	-0.06	70.7	72.3	-	-	-	-
07	21	1:50 pm	E	19.4	23.3	3.9	5	4.2	E	30.03	-	70.7	72.1	-	-	-	-
07	21	12:50 pm	E	19.4	23.3	3.9	4	4.1	ESE	30.06	-0.03	70.7	72.0	-	-	-	-
07	21	11:50 am	E	17.5	21.4	3.6	4	4.0	ESE	30.08	+0.00	70.7	72.5	-	-	-	-
07	21	9:50 am	E	15.5	17.5	3.3	7	4.2	SE	30.09	+0.00	71.2	73.4	-	-	-	-

Detailed Wave Summary
for 44025 as of (10:00 am EDT)
1400 GMT on 07/22/2018:
These wave data are displayed in rounded times. Unit of Measure: Time Zone: Click on the graph icon in the table below to see a time series plot of the last five days of that observation.
	Significant Wave Height (WVHT):	9.5 ft
	Swell Height (SwH):	8.5 ft
	Swell Period (SwP):	10.0 sec
	Swell Direction (SwD):	S
	Wind Wave Height (WWH):	3.6 ft
	Wind Wave Period (WWP):	5.3 sec
	Wind Wave Direction (WWD):	SE
	Wave Steepness (STEEPNESS):	AVERAGE
	Average Wave Period (APD):	7.0 sec

Previous observations

MM	DD	TIME (EDT)	WVHT ft	SwH ft	SwP sec	SwD	WWH ft	WWP sec	WWD	STEEPNESS	APD sec
07	22	9:00 am	9.5	8.9	10.8	SSE	3.3	5.0	ESE	AVERAGE	6.9
07	22	8:00 am	10.5	9.5	10.0	S	4.9	6.2	SE	AVERAGE	7.1
07	22	7:00 am	11.2	8.5	10.0	S	7.5	7.1	ESE	AVERAGE	7.0
07	22	6:00 am	9.8	3.3	26.7	S	9.5	7.1	ESE	VERY_STEEP	6.4
07	22	5:00 am	8.2	1.6	10.0	SSW	8.2	6.7	ESE	VERY_STEEP	5.7
07	22	4:00 am	8.9	0.7	10.8	ENE	8.9	7.1	ESE	VERY_STEEP	5.7
07	22	3:00 am	8.5	0.0	-	-	8.5	7.1	ESE	VERY_STEEP	5.7
07	22	2:00 am	8.2	0.3	10.8	SE	7.9	6.7	ESE	VERY_STEEP	5.4
07	22	1:00 am	8.9	0.3	12.9	SSE	8.9	7.1	ESE	VERY_STEEP	5.6
07	22	12:00 am	7.9	0.0	-	-	7.9	7.1	ESE	STEEP	5.4
07	21	11:00 pm	7.5	0.0	-	-	7.5	6.7	ESE	VERY_STEEP	5.5
07	21	10:00 pm	7.5	1.0	10.8	E	7.5	6.7	E	VERY_STEEP	5.3
07	21	9:00 pm	8.2	0.0	-	-	8.2	6.2	E	VERY_STEEP	5.3
07	21	8:00 pm	6.9	1.0	14.8	E	6.9	5.9	E	VERY_STEEP	5.1
07	21	7:00 pm	6.2	0.7	12.1	NNE	6.2	5.6	E	VERY_STEEP	4.9
07	21	6:00 pm	5.9	0.7	14.8	SE	5.6	5.3	E	VERY_STEEP	4.7
07	21	5:00 pm	4.9	0.7	10.8	E	4.9	5.3	ESE	VERY_STEEP	4.5
07	21	4:00 pm	4.6	0.0	-	-	4.6	5.0	ESE	VERY_STEEP	4.5
07	21	3:00 pm	4.3	1.3	23.5	ESE	4.3	4.8	E	VERY_STEEP	4.2
07	21	2:00 pm	3.9	1.3	7.7	SE	3.9	4.5	E	VERY_STEEP	4.2
07	21	1:00 pm	3.9	1.3	7.1	SSE	3.6	4.3	ESE	VERY_STEEP	4.1
07	21	12:00 pm	3.6	1.6	7.7	SE	3.3	4.0	ESE	VERY_STEEP	4.0
07	21	10:00 am	3.3	2.0	6.7	SE	2.6	4.3	SE	AVERAGE	4.2

Plot of wave energy versus frequency (and period)

Description of Measurements

Links which are specific to this station are listed below:

Real Time Data in tabular form for the last forty-five days.

Historical Data & Climatic Summaries for quality controlled data for the current month, previous months, and previous years.

The weekly status report and the weekly maintenance report also provide valuable station information.

Note that the payload types and the station locations occasionally change.
Please refer to the NDBC data inventory for the data history of each station.