Merrick station location
Station location

Sea Conditions at

Long Island New York USA
Latitude 40 degrees 38.6 minutes North
Longitude 73 degrees 32.4 minutes West

A service of LIShore.

Page last updated 09/25/2013 10:32 EDT

STATUS NOTICE Fall 2013: The station at Merrick was destroyed by Superstorm Sandy and has been rebuilt.
Bay Tide
See notes below regarding level references.
Time 05/04 05:24 Highest, last 24 hr Lowest, last 24 hr
Water level 2.3 feet ( 0.7 meters) MSL
3.4 feet NGVD29
2.9 feet ( 0.9 meters) MSL
4.1 feet NGVD29
at 05/03 18:18
-1.3 feet (-0.4 meters) MSL
-0.2 feet NGVD29
at 05/03 12:18
Tide Tide is flooding.
Rate of change: 0.7 feet/hr
( 0.22 meters/hr).
Water temperature 54 deg F (12deg C) 54 deg F (12deg C)
at 05/03 15:48
53deg F (12 deg C)
at 05/04 04:30
Weather - note times below are GMT (EST+5 hours, EDT+4 hours)
Weather Observations at Merrick, NY, USA
Time Last Updated on May 4 2016, 9:25 am BST   Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 3 mph 13 mph
at 4:18am
Wind gust 0 mph [no data] mph
at [no data]
Wind direction Northeast : 30 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 48.5 deg F (9.2 deg C) 49.7 deg F (9.44 deg C)
at 12:00am
48.4 deg F (8.89 deg C)
at 8:33am
Barometric pressure 29 in Hg (1008 mbar) 29 in Hg (0 mbar)
at 1:14am
29 in Hg (0 mbar)
at 6:59am
Barometer - 1 hour trend Steady    


  1. Real-time data are unchecked and preliminary. Please read this disclaimer.
  2. MSL = measurement referenced to Mean Sea Level. Seasonal and weather system biases highly affect estuarine water levels, therefore the MSL datum for this station is preliminary until data are collected over a sufficient length of time to define it accurately.
  3. NGVD29 = measurement referenced to National Geodetic Vertical Datum of 1929.
  4. Daily precipitation resets at solar midnight (midnight EST, 11:00pm EDT). Heated gauge converts frozen preciptation to liquid equivalent.
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