Smith Point Bridge
Smith Point Bridge
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Sea Conditions at

Shirley, Long Island New York USA
Latitude 40 degrees 44.29 minutes North
Longitude 72 degrees 52.12 minutes West

A service of LIShore.

Page last updated 09/25/2013 10:31 EDT

Bay Tide at the Smith Point Bridge.
See note below regarding MSL reference.
Time 08/20 08:12 Highest, last 24 hr Lowest, last 24 hr
Water level 0.9 feet ( 0.3 meters) MSL
2.0 feet NGVD29
1.5 feet ( 0.46 meters) MSL
2.6 feet NGVD29
at 08/19 18:00
-0.0 feet (-0.01 meters) MSL
1.0 feet NGVD29
at 08/19 11:18
Tide Tide is ebbing.
Rate of change: -0.1 feet/hr
(-0.03 meters/hr).
Water temperature 74 deg F (23 deg C) 75 deg F (24 deg C)
at 08/19 20:00
71 deg F (22 deg C)
at 08/19 08:42

Weather Observations at Smith Point Bridge
Time 08/20/14 12:38p EDT  Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 6 mph 9.0 mph
at 1:17a
[no data] mph
at [no data]
Wind gust 9 mph [no data] mph
at [no data]
Wind direction ENE : 66 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 70.0 deg F (21.11 deg C) 70.3 deg F (0 deg C)
at 1:43a
64.9 deg F (0 deg C)
Barometric pressure 30 in Hg (1015 mbar) 30 in Hg (0 mbar)
at 12:37p
30 in Hg (0 mbar)
at 12:00a
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.
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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.