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 01/26 04:30 Highest, last 24 hr Lowest, last 24 hr
Water level -0.6 feet (-0.2 meters) MSL
0.5 feet NGVD29
1.8 feet ( 0.6 meters) MSL
3.0 feet NGVD29
at 01/26 00:50
-2.4 feet (-0.7 meters) MSL
-1.2 feet NGVD29
at 01/25 18:27
Tide Tide is ebbing.
Rate of change: -0.7 feet/hr
(-0.21 meters/hr).
Water temperature 37 deg F ( 3deg C) 37 deg F ( 3deg C)
at 01/25 17:12
31deg F (-0 deg C)
at 01/25 18:49
Weather - note times below are GMT (EST+5 hours, EDT+4 hours)
Weather Observations at Merrick, NY, USA
Time Last Updated on Jan 26 2015, 12:10 pm GMT   Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 9 mph 18 mph
at 12:05pm
Wind gust 0 mph [no data] mph
at [no data]
Wind direction Northeast : 60 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 24.9 deg F (-3.9 deg C) 34.7 deg F (1.11 deg C)
at 12:02am
24.8 deg F (-4.44 deg C)
at 12:09pm
Barometric pressure 29 in Hg (1015 mbar) 30 in Hg (0 mbar)
at 6:54am
29 in Hg (0 mbar)
at 12:18am
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.