Smith Point Bridge
Smith Point Bridge
Click on image for larger version.

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 08/30 22:12 Highest, last 24 hr Lowest, last 24 hr
Water level 2.0 feet ( 0.6 meters) MSL
3.1 feet NGVD29
2.2 feet ( 0.67 meters) MSL
3.3 feet NGVD29
at 08/29 22:42
0.7 feet ( 0.21 meters) MSL
1.8 feet NGVD29
at 08/30 17:30
Tide Tide is flooding.
Rate of change: 0.2 feet/hr
( 0.07 meters/hr).
Water temperature 76 deg F (25 deg C) 77 deg F (25 deg C)
at 08/29 22:48
74 deg F (23 deg C)
at 08/30 07:12

Weather Observations at Smith Point Bridge
Time 08/31/15 2:28a EDT  Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 15 mph 18.0 mph
at 12:26a
[no data] mph
at [no data]
Wind gust 18 mph [no data] mph
at [no data]
Wind direction WSW : 252 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 75.0 deg F (23.89 deg C) 75.4 deg F (0 deg C)
at 1:45a
75.0 deg F (0 deg C)
Barometric pressure 30 in Hg (1016 mbar) 30 in Hg (0 mbar)
at 2:09a
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.
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.