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 10/23 16:18 Highest, last 24 hr Lowest, last 24 hr
Water level -0.5 feet (-0.2 meters) MSL
0.6 feet NGVD29
3.2 feet ( 1.0 meters) MSL
4.4 feet NGVD29
at 10/23 08:31
-0.9 feet (-0.3 meters) MSL
0.3 feet NGVD29
at 10/23 15:30
Tide Tide is flooding.
Rate of change: 0.4 feet/hr
( 0.12 meters/hr).
Water temperature 58 deg F (15deg C) 60 deg F (16deg C)
at 10/22 16:48
49deg F (10 deg C)
at 10/23 15:36
Weather - note times below are GMT (EST+5 hours, EDT+4 hours)
Weather Observations at Merrick, NY, USA
Time Last Updated on Oct 23 2014, 8:25 pm BST   Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 9 mph 32 mph
at 12:46am
Wind gust 0 mph [no data] mph
at [no data]
Wind direction Southwest : 238 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 53.0 deg F (11.7 deg C) 53.6 deg F (11.67 deg C)
at 6:02am
50.2 deg F (10 deg C)
at 2:48am
Barometric pressure 29 in Hg (1004 mbar) 29 in Hg (0 mbar)
at 12:07am
29 in Hg (0 mbar)
at 11:42am
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.
LIShore instrument sites Heading for port... LIShore home page
Stony Brook logo

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.