A moderate earthquake struck the Kagawa, Ehime, and Kochi prefectures of Japan on February 28, 2025, at approximately 3:29 PM. The Japan Meteorological Agency (JMA) reported the earthquake had its epicenter located in central Kochi, with a magnitude of 4.2 and at a depth of about 40 kilometers. Fortunately, there are no tsunami warnings associated with this seismic event.
The earthquake registered the highest intensity of 2 on the Japanese seismic scale, affecting several towns across the three prefectures. Notably, the earthquake's impact was felt most significantly in Mitoyo and Tado, both located in Kagawa, as well as Saijo in Ehime, and cities of Aki and Kochi.
According to the JMA, specific details of the seismic intensity are as follows:
- Intensity 2: Mitoyo City, Tado Town (Kagawa), Saijo City (Ehime), Aki City, and Kochi City.
- Intensity 1: Round up included cities such as Marugame, Zentsuji, Kannonji, Utazu, Ayagawa, Kotohira, Mannou, Takamatsu, and Sanuki from Kagawa Prefecture; Imabari, Niihama, Shikokuchuo, and various towns from Ehime; and towns across Kochi including Toyo, Tano, Yasuda, Kitagawa, and several others.
- Notable mentions also include areas from Okayama and Hiroshima Prefectures where tremors of intensity 1 were recorded.
The JMA has continually updated the regional reports since the earthquake was detected, ensuring locals have access to the latest safety information. The agency has emphasized the low probability of tsunami risks originating from this earthquake, to ease public concern.
Residents from Kagawa, Ehime, and Kochi have reported feeling tremors during the seismic event, though there have been no immediate reports of injuries or structural damage. The quick response from the meteorological agency showcases the preparedness of Japan’s disaster management protocols.
Earthquakes are not uncommon in Japan, situated at the convergence of several tectonic plates. While the JMA has stated this earthquake was moderate, it serves as a reminder of the importance of being prepared for future seismic activities.
Officials are reminding people living within affected areas to remain vigilant and follow any safety protocols advised by local government and emergency services. This includes keeping emergency kits stocked and staying informed through official channels.
This seismic incident has been closely monitored, with updates being provided as new information becomes available. The Ministry of Land, Infrastructure, Transport and Tourism encourages the public to be cautious and prepared for any aftershocks, which can often occur following moderate earthquakes.
The earthquake has drawn attention to Japan's seismic activity, noting the continuous need for disaster preparedness and public education on emergency responses.
Further evaluations of earthquake preparedness initiatives are likely to emerge during community meetings as towns assess the impact and responses to the event.