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 03/27 02:36 Highest, last 24 hr Lowest, last 24 hr
Water level 1.5 feet ( 0.5 meters) MSL
2.7 feet NGVD29
1.6 feet ( 0.5 meters) MSL
2.7 feet NGVD29
at 03/27 02:18
-1.8 feet (-0.6 meters) MSL
-0.7 feet NGVD29
at 03/26 08:24
Tide Tide is flooding.
Rate of change: 0.1 feet/hr
( 0.03 meters/hr).
Water temperature 41 deg F ( 5deg C) 41 deg F ( 5deg C)
at 03/27 00:12
36deg F ( 2 deg C)
at 03/26 15:18
Weather - note times below are GMT (EST+5 hours, EDT+4 hours)
Weather Observations at Merrick, NY, USA
Time Last Updated on Mar 27 2015, 6:40 am GMT   Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 9 mph 22 mph
at 12:34am
Wind gust 0 mph [no data] mph
at [no data]
Wind direction Northwest : 336 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 42.7 deg F (5.9 deg C) 51.5 deg F (10.56 deg C)
at 2:50am
42.6 deg F (5.56 deg C)
at 6:40am
Barometric pressure 29 in Hg (1004 mbar) 29 in Hg (0 mbar)
at 6:30am
29 in Hg (0 mbar)
at 1:18am
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.