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 03/29 04:48 Highest, last 24 hr Lowest, last 24 hr
Water level 1.1 feet ( 0.3 meters) MSL
2.2 feet NGVD29
1.1 feet ( 0.35 meters) MSL
2.2 feet NGVD29
at 03/28 05:06
-0.0 feet (-0.01 meters) MSL
1.0 feet NGVD29
at 03/28 23:48
Tide Tide is flooding.
Rate of change: 0.2 feet/hr
( 0.06 meters/hr).
Water temperature 39 deg F ( 4 deg C) 42 deg F ( 6 deg C)
at 03/28 05:00
38 deg F ( 3 deg C)
at 03/29 02:30

Weather Observations at Smith Point Bridge
Time 03/29/15 9:16a EDT  Maximum, last 24 hr Minimum, last 24 hr
Average wind speed 0 mph 1.0 mph
at 6:43a
[no data] mph
at [no data]
Wind gust 1 mph [no data] mph
at [no data]
Wind direction NW : 326 deg true    
STDEV Wind Direction [no data] deg    
Wind speed change - 1 hour trend ND    
Air temperature 27.2 deg F (-2.67 deg C) 30.6 deg F (0 deg C)
at 12:00a
26.3 deg F (0 deg C)
Barometric pressure 30 in Hg (1020 mbar) 30 in Hg (0 mbar)
at 9:15a
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.