Japan issues warning of major earthquake

Japan has issued its first-ever warning about an increased risk of a “major earthquake” in the near future. The advisory, announced on Thursday night local time, urges people to stay vigilant without the need for immediate evacuation. It clarifies that while a large earthquake is not imminent, the likelihood of one occurring is higher than usual.

This warning follows a 7.1 magnitude earthquake off the southern island of Kyushu, which reportedly caused no significant damage. The heightened alert is due to the earthquake’s epicenter being located at the edge of the Nankai Trough, a seismic zone along Japan’s Pacific coast. This area is known for its potential for massive earthquakes, with the plate boundary extending from Suruga Bay in central Japan to the Hyuganada Sea in Kyushu.

Historical records show that major quakes in the Nankai Trough have resulted in thousands of deaths, occurring roughly every 90 to 200 years, with the last major event recorded in 1946. Experts estimate there is a 70% to 80% chance of a magnitude 8 or 9 earthquake along the trough within the next 30 years, with worst-case scenarios predicting over 200,000 fatalities and possible tsunamis.

During a press conference, Japanese Meteorological Agency official Shinya Tsukada stressed that while there is a higher likelihood of a major earthquake compared to normal, it is not certain when it will happen. This advisory, the lower of two alert levels, will remain in effect for a week. Residents are advised to be more alert, consider voluntary evacuation if necessary, and continue their daily routines while ensuring they have adequate supplies and are familiar with evacuation routes.

Authorities have urged the public to remain cautious but continue their daily activities, emphasizing the importance of preparedness. Residents should check their evacuation routes and ensure they have enough emergency supplies on hand. The advisory’s primary aim is to increase awareness without causing undue alarm, as officials stress that while the risk is elevated, there is no immediate indication that a major earthquake is imminent.

In light of this advisory, communities are encouraged to stay informed through official channels and be prepared to act quickly if circumstances change. The focus remains on maintaining normalcy while being ready for any potential developments in the seismic situation.