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Datums for 9462955, False Pass, Unimak Island AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9462955, False Pass, Unimak Island, AK
Status: Accepted (Dec 12 2014)
Units: Feet
Control Station: 9462620 Unalaska, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW4.16Mean Higher-High Water
MHW3.86Mean High Water
MTL2.36Mean Tide Level
MSL2.44Mean Sea Level
DTL2.08Mean Diurnal Tide Level
MLW0.86Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-2.42Station Datum
GT4.16Great Diurnal Range
MN3.00Mean Range of Tide
DHQ0.29Mean Diurnal High Water Inequality
DLQ0.86Mean 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
HAT5.97Highest Astronomical Tide
HAT Date & Time12/30/1986 22:48HAT Date and Time
LAT-2.11Lowest Astronomical Tide
LAT Date & Time07/10/1987 19:06LAT Date and Time
Tidal Datum Analysis Periods
06/01/2014 - 08/31/2014




Products available at 9462955 False Pass, Unimak Island, AK

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services