Data and Station Information for UNO

Station Information

Station ID:	812
Latitude:	34.488611
Longitude:	133.949444
Coastline code:	643
Station code:	31
Country:	JAPAN
Time span of data:	1957 – 2024
Completeness (%):	96
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 UNO.

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

Plot of annual mean sea level data at UNO.

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.

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Uno 643/031 RLR(1967) is 25.5m below Attached BM

Documentation added 2002-03-26

Uno 'moved to new station July 1974'. (from Tidal Observations 1975)

Documentation added 2010-02-11

From the RLR plot a rising trend in the dataset is clearly visible.

Documentation added 2011-02-23

Dataset buddy checked with Kobe II although there is quite a distance between the stations the profiles compare well.

Documentation added 2012-02-21

A massive earthquake magnitude 9.0 occurred at 14.46 JST (05.46 UTC) on Friday 11th March 2011 with epicentre approx. 70km east of the Oshika Peninsula of Tohoku. It was the most powerful known earthquake to hit Japan triggering a tsunami with waves up to 40.5m travelling up to 10km inland.
Where there are more than one benchmark with the same name a suffix has been added

Data Authority

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

Data

Data Notes

Extracted from Database

UNO