Station Information

Station ID: 1061
Latitude: 34.209167
Longitude: 139.131667
Coastline code: 642
Station code: 99
Country: JAPAN
Time span of data: 1964 – 2022
Completeness (%): 91
Date of last update: 03 Feb 2023

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.

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Kozu Simu 642/099 RLR(1970) is 12.1m below BM Kozu Simu

Documentation added 2006-11-28

sttn flagged - dataset suspect.

Documentation added 2008-03-06

Data for 2007 flagged suspect.

Documentation added 2009-05-05

There is what appears to be a datum shift 2007 onwards relevant data flagged.

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 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 waves up to 40.5m and travelling up to 10km inland.

Data Authority

Japan Oceanographic Data Centre
Hydrographic Department, Maritime Safety Agency
MLIT Aomi Building
2-5-18, Aomi, Koto-ku
Tokyo 135-0064