skip navigation link
TsunamisEarthquakesVolcanoes

PTWC station 1611691: Hanalei, Kauai, HI

Time-series Plot of Waterlevel

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)

Reported Tsunami Waves

Comments

Record with many gaps. There are 3 segments with different vertical mean levels: 1. 2010-08-31T20:51:28 to 2012-01-11T19:14:15 with estimated tidal mean level of 1.5788 m, 2. 2012-01-11T19:14:31 to 2018-07-31T20:08:50 with estimated tidal mean level of 1.8319 m, 3. 2018-07-31T20:09:00 to 2020-12-31T23:59:50 with estimated tidal mean level of 0.6264 m. Segments 1 and 2 are shifted down to the mean tidal level of segment 3, which is the most recent one, by -0.9524 m and -1.2055 m respectively. Data dispersion is changing several times along the record. Expected reason is changes in sensor’s sensitivity as several times segments with smoothed data is followed by segments with high frequency oscillations. Data quality is of big concern!

Datums

Station datum is not surveyed or controlled.

Station History

DateNotes

Sensor History

DateTypeMakeModelSerial No.
Pressure
Our approach to data processing is described in this article.
Top plot: Dates and times of full and new moons acquired from the Astronomical Applications Department of the U.S. Naval Observatory.