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 10/24 20:12 Highest, last 24 hr Lowest, last 24 hr
Water level 2.2 feet ( 0.7 meters) MSL
3.3 feet NGVD29
3.0 feet ( 0.9 meters) MSL
4.1 feet NGVD29
at 10/24 09:36
-1.1 feet (-0.3 meters) MSL
0.0 feet NGVD29
at 10/24 15:54
Tide Tide is flooding.
Rate of change: 0.6 feet/hr
( 0.18 meters/hr).
Water temperature 57 deg F (14deg C) 58 deg F (14deg C)
at 10/23 20:24
51deg F (10 deg C)
at 10/24 07:24
Weather - note times below are GMT (EST+5 hours, EDT+4 hours)
Weather Observations at Merrick, NY, USA
Time Last Updated on Oct 25 2014, 12:25 am BST   Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 2 mph 3 mph
at 12:22am
Wind gust 0 mph [no data] mph
at [no data]
Wind direction North : 20 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 55.3 deg F (12.9 deg C) 55.3 deg F (12.78 deg C)
at 12:06am
55.1 deg F (12.78 deg C)
at 12:00am
Barometric pressure 29 in Hg (1009 mbar) 29 in Hg (0 mbar)
at 12:17am
29 in Hg (0 mbar)
at 12:00am
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.