On April 22, 2011, the government designated the 20km radius around the NPP as a restricted area and prohibited entry into the area excluding those engaged in emergency response. As the result of System for Prediction of Environmental Emergency Dose Information (SPPEDI) was still not reflected at this point, many people did not know that the wind and the rain on March 15th brought radioactive particles to spread northwest direction from the NPP. On March 15, after the sound what was believed to be explosion was heard at the reactor No.2 & No.4, the government instructed the residents living between 20km-30km radius from the NPP to stay inside house. On March 12, 2011, after the 1st explosion at the nuclear reactor No.1, the government expanded the areas of evacuation within 20km radius from Nuclear Power Plant. As the seriousness of the accident became apparent, the areas of evacuation order were gradually expanded. Immediately after the accident, the government ordered residents in only 3km radius around the Fukushima Daiichi Nuclear Power plant (Here after referred as NPP) to evacuate on Mar.11, 2011. To know the current status of the area, please click here. In this page, transition of evacuation orders and restricted areas are explained in chronological order.
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