=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Hakata              645/091 RLR(1973) is 9.5m below BM Hakata
=========================== 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. 70 km east of the Oshika Peninsular of Tohoku. It was the most powerful earthquake known to hit Japan and triggered a tsunami with waves up to 40.5m travelling up to 10 km inland.