Station Information

Station ID: 809
Latitude: 34.009167
Longitude: 134.587778
Coastline code: 644
Station code: 51
Country: JAPAN
Time span of RLR data: 1958 – 2016
RLR completeness (%): 99
Time span of metric data: 1957 – 2016
Metric completeness (%): 98
Frequency Code: 24
Date of last update: 08 Feb 2017

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR 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.

Station Documentation

Link to RLR information.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
Komatsushima 644/051 RLR(1976) is 8.6m below Attached BM. Attached BM (i) superceded the previous benchmark in 1994
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-Feb-2011 :
Buddy checked with Wakayama data profiles compare well.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 21-Feb-2012 :
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 known earthquake to hit Japan triggering a tsunami with wave up to 40.5m and travelling up to 10km inland.

Data Authority

Marine Department
Japan Meteorological Agency
Ote-machi, Chiyoda-ku