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Datums for 9450251, Entrance to Windy Cove AK


Data Quality Data from this station was collected using methodology that does not meet CO-OPS highest level of accuracy (no more than 10 cm, 95% Confidence Interval (CI) referenced to a tidal datum). Recognizing that lower quality data can be used for certain applications CO-OPS is making this data available to its users with restraint. The average six-minute water level observations derived from this system have an accuracy ranging from 10.0 - 30.0 cm, 95% CI on datum. Users are cautioned to consider the accuracy of these data before using them for critical navigational or coastal engineering purposes.

Elevations on Station Datum

Station: 9450251, Entrance to Windy Cove, AK
Status: Accepted (Aug 15 2016)
Units: Feet
T.M.: 135
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW10.94Mean Higher-High Water
MHW10.06Mean High Water
MTL4.76Mean Tide Level
MSL4.76Mean Sea Level
DTL4.43Mean Diurnal Tide Level
MLW-0.55Mean Low Water
MLLW-2.09Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT13.03Great Diurnal Range
MN10.62Mean Range of Tide
DHQ0.88Mean Diurnal High Water Inequality
DLQ1.53Mean Diurnal Low Water Inequality
HWI9.50Greenwich High Water Interval (in hours)
LWI3.22Greenwich Low Water Interval (in hours)
MaximumHighest Observed Water Level
Max Date & Time Highest Observed Water Level Date and Time
MinimumLowest Observed Water Level
Min Date & Time Lowest Observed Water Level Date and Time
HAT14.46Highest Astronomical Tide
HAT Date & Time12/23/1999 21:42HAT Date and Time
LAT-5.86Lowest Astronomical Tide
LAT Date & Time05/25/1990 16:06LAT Date and Time
Tidal Datum Analysis Periods
05/17/2016 - 06/15/2016




Products available at 9450251 Entrance to Windy Cove, AK

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services