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 11/29 01:50 Highest, last 24 hr Lowest, last 24 hr
Water level 1.9 feet ( 0.6 meters) MSL
3.0 feet NGVD29
2.0 feet ( 0.6 meters) MSL
3.1 feet NGVD29
at 11/29 01:20
-2.1 feet (-0.7 meters) MSL
-1.0 feet NGVD29
at 11/28 19:27
Tide Tide is turning.
Rate of change: -0.0 feet/hr
(-0.01 meters/hr).
Water temperature 44 deg F ( 7deg C) 47 deg F ( 8deg C)
at 11/28 02:06
32deg F ( 0 deg C)
at 11/28 19:32
Weather - note times below are GMT (EST+5 hours, EDT+4 hours)
Weather Observations at Merrick, NY, USA
Time Last Updated on Nov 29 2014, 6:55 am GMT   Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 3 mph 15 mph
at 1:37am
Wind gust 0 mph [no data] mph
at [no data]
Wind direction West : 276 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 28.3 deg F (-2.1 deg C) 31 deg F (-0.56 deg C)
at 12:21am
27.6 deg F (-2.78 deg C)
at 5:14am
Barometric pressure 30 in Hg (1025 mbar) 30 in Hg (0 mbar)
at 6:56am
30 in Hg (0 mbar)
at 12:45am
Barometer - 1 hour trend Rising Slowly    


  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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LIShore is a project of the School of Marine and Atmospheric Sciences at Stony Brook University in collaboration with the LIShore partners.

Tom Wilson (email: welcomes your comments or questions regarding this web site.