Data and Station Information for NAHA

Station Information

Station ID:	1151
Latitude:	26.213333
Longitude:	127.665278
GLOSS ID:	81
Coastline code:	646
Station code:	24
Country:	JAPAN
Time span of data:	1966 – 2024
Completeness (%):	99
Link to ellipsoid:	Available
Date of last update:	21 Mar 2025

Green Arrow:	Current Station
Yellow Marker:	Neighbouring RLR Station
Red Marker:	Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Tide Gauge Data

Plot of monthly mean sea level data at NAHA.

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at NAHA.

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution. NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: P212
Nearby Real Time Stations from VLIZ: naha
Fast Delivery Data from UHSLC station 355: hourly and daily
Research Quality Data from UHSLC station 355: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Naha 646/024 RLR(1976) is 14.7m below BM no. 9631

Documentation added 2012-02-22

A massive earthquake magnitude 9.0 occurred at 14.46 JST (05.46 UTC) on Friday 11th March 2011 with the epicentre approx. 70km east of the Oshika Peninsula of Tohoku. It was the most powerful earthquake to hit Japan triggering a tsunami with waves of up to 40.5m high and travelling up to 10km inland.

Documentation added 2014-03-13

The GPS benchmark information has been downloaded from the SONEL website. GPS benchmark P212 is 14.130m above RLR.

Data Authority

Japan Meteorological Agency
3-6-9 Toranomon, Minato City
Tokyo

Data

Data Notes

Extracted from Database

NAHA