Notice: Data collected are from NC Department of Public Safety, Division of Emergency Management that are subject to NOAA's National Ocean Service (NOS) routine quality assurance procedures on a monthly basis with data available for the previous month. For access to real time data at this station, visit NCDPS Flood Inundation Mapping and Alert Network at https://fiman.nc.gov/.

Datums for 8655151, CEDAR ISLAND

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8655151, CEDAR ISLAND
Status: Accepted (Sep 11 2023)
Units: Feet
Control Station: 8654467 USCG Station Hatteras, NC
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW0.39Mean Higher-High Water
MHW0.41Mean High Water
MTL0.24Mean Tide Level
MSL0.18Mean Sea Level
DTL0.20Mean Diurnal Tide Level
MLW0.07Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.35North American Vertical Datum of 1988
STND0.30Station Datum
GT0.39Great Diurnal Range
MN0.34Mean Range of Tide
DHQ-0.02Mean Diurnal High Water Inequality
DLQ0.07Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max TideHighest Observed Tide
Max Tide Date & Time Highest Observed Tide Date & Time
Min TideLowest Observed Tide
Min Tide Date & Time Lowest Observed Tide Date & Time
HAT0.52Highest Astronomical Tide
HAT Date & Time03/19/2039 14:54HAT Date and Time
LAT-0.14Lowest Astronomical Tide
LAT Date & Time12/21/2033 05:54LAT Date and Time
Tidal Datum Analysis Periods
09/01/2022 - 03/31/2023


Products available at 8655151 CEDAR ISLAND,
  • Meteorological/Other
  • Meteorological Observations
  • Water Temp/Conductivity
  • PORTS®
  • This station is not a member of PORTS®