Like many people, the shear enormity of these events is overwhelming. I was wondering how much warning people had of the Tsunami. So, I started a time line of events. It appears there was about 25minutes between the time the earthquake was felt at the coast and the time the wave hit the nearest tsunami monitoring station.
Thursday 9th March 2011 (day before)
- 7.2 MW event approximately 40 km (25 mi) from 11 March quake,
- Another three on the same day in excess of 6 MW in magnitude.
Friday, 11th March 2011
- 14:46:23 (5:46 UK time) Magnitude 9.0 Earthquake
- 14:47 Seismic wave of earthquake hits Sendai 130km from epicentre
- 14:47 Earthquake Early Warning system connected to more than 1,000 seismometers in Japan sent out warnings on television of an impending earthquake to millions.
- 14:48 Tremor felt in Tokyo
- 15:12 6.8m tsunami wave hits Iwate Kamaishi-oki Continue reading




