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 08/21 07:48 Highest, last 24 hr Lowest, last 24 hr
Water level 0.9 feet ( 0.3 meters) MSL
2.1 feet NGVD29
2.1 feet ( 0.6 meters) MSL
3.2 feet NGVD29
at 08/20 17:36
-1.3 feet (-0.4 meters) MSL
-0.1 feet NGVD29
at 08/21 00:24
Tide Tide is ebbing.
Rate of change: -0.6 feet/hr
(-0.18 meters/hr).
Water temperature 74 deg F (24deg C) 76 deg F (24deg C)
at 08/20 14:42
32deg F ( 0 deg C)
at 08/21 00:18
Weather - note times below are GMT (EST+5 hours, EDT+4 hours)
Weather Observations at Merrick, NY, USA
Time Last Updated on Aug 21 2014, 11:55 am BST   Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 3 mph 7 mph
at 12:00am
Wind gust 0 mph [no data] mph
at [no data]
Wind direction East : 85 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 72.1 deg F (22.3 deg C) 72.5 deg F (22.22 deg C)
at 12:00am
69.3 deg F (20.56 deg C)
at 7:53am
Barometric pressure 30 in Hg (1017 mbar) 30 in Hg (0 mbar)
at 11:47am
29 in Hg (0 mbar)
at 3:07am
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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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.