PTWC station 1612352: Makapuu, Oahu, HI
Cite as: Pacific Tsunami Warning Center (PTWC). 2018. Water Level Data from Pacific Tsunami Warning Center Tide Gauges in Hawaii. NOAA National Centers for Environmental Information. doi:10.25921/mand-3524. Accessed [date].
Quality-Controlled and De-Tided
Coastal Water Level Data (2010-08-31 to 2023-12-31)
Unassessed ("Preliminary")
Coastal Water Level Data (2023)
Comments
Record with many gaps, mainly at the beginning of the observations. There are 3 segments with different vertical mean tidal levels: 1. 2010-08-31T20:51:28 to 2016-04-07T20:28:40 with estimated tidal mean level of 3.5973 m, 2. 2016-04-21T19:29:30 to 2018-08-09T17:28:20 with estimated tidal mean level of 3.0112 m, 3. 2018-08-16T18:49:40 to 2019-12-31T23:59:50 with estimated tidal mean level of 0.7490 m. Segments 1 and 2 are shifted down to the mean tidal level of segment 3, which is the most recent one, by -2.8069 m and -2.2622 m respectively. Data on segment from 2019-03-16 00:00:20 to 2019-09-03 18:57:20 is disregarded because of serious quality concerns - considered unusable. Starting from 2019-03-16 00:00:20 the maximum tidal range gradually increases from about 1.20 - 1.40 meters up to 3.00 m at the end of this period along with linear trend in the mean tidal level. The mean tidal level for the stable segment is about 0.75 m, at the end of the disregarded segment it is about 3.00 m. The combination of gradually increasing tidal range and upside trend suggests for issues in the sensor.
Datums
Station datum is not surveyed or controlled.
Station History
| Date | Notes |
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Sensor History
| Date | Type | Make | Model | Serial No. |
|---|---|---|---|---|
| Pressure |
Top plot: Dates and times of full and new moons acquired from the Astronomical Applications Department of the U.S. Naval Observatory.