Japan Ends ‘Megaquake’ Special Caution Week After No Immediate Risk Found
Japan has concluded a week-long “megaquake” special caution period after the Japan Meteorological Agency found no abnormal seismic activity in the Nankai Trough region. This advisory, issued on August 8 following a magnitude 7.1 earthquake off southwestern Japan, was the first of its kind. The caution period aimed to prepare residents for a possible magnitude 8 or higher earthquake.
The government had urged over 700 municipalities in 29 prefectures to review their preparedness and evacuation plans. While the caution period has ended, officials emphasized that the risk of a major earthquake remains, advising citizens to stay vigilant.
Despite the absence of abnormal seismic activity, seismologists warn that there is a 70 to 80 percent chance of a magnitude 8 or 9 earthquake occurring along the Nankai Trough within the next 30 years. The trough has a history of triggering devastating quakes and tsunamis along Japan’s Pacific coast.
The advisory led to widespread concern, affecting travel plans during Japan’s holiday week and prompting residents to stock up on emergency supplies. Coastal towns also took precautions, with some closing beaches and canceling events.
Japan’s disaster management officials have left the decision to continue voluntary safety measures up to local authorities and businesses.