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. 2021 Jul 19;11:14651. doi: 10.1038/s41598-021-94152-1

Table 1.

Timeline of the Fukushima Nuclear Disaster and associated hospital evacuation in 2011.

Date Time Event
March 11 02:46 PM

A magnitude 9.0 earthquake struck Japan

A total of 11 units of the Fukushima Daiichi (and Daini) Nuclear Power Plant (FDNPP) automatically shut down

07:03 PM "Declaration of a Nuclear Emergency Situation" at the FDNPP was announced by the Japanese government
09:23 PM Residents within a 3 km radius of the FDNPP were ordered to evacuate
March 12 05:44 AM

The evacuation zone was expanded to a radius of 10 km

The evacuation of some psychiatric hospital inpatients began

03:36 PM A hydrogen explosion occurred at the FDNPP Unit 1
07:04 PM The evacuation zone was expanded to a radius of 20 km
March 14 11:01 AM A hydrogen explosion occurred at the FDNPP Unit 3
March 15 06:10 AM The sound of an explosion resonated at the FDNPP Unit 2
09:40 PM

A fire broke out at the FDNPP Unit 4

Residents within a 20–30 km radius of the FDNPP were ordered to evacuate indoors