On April 18, 2025, at around 8:19 PM, a significant earthquake struck Nagano Prefecture, registering a maximum seismic intensity of 5 lower. The Japan Meteorological Agency reported that the epicenter was located in the northern part of the prefecture, specifically at coordinates 36.5 degrees north latitude and 137.9 degrees east longitude, with a depth of approximately 10 kilometers. The earthquake was estimated to have a magnitude of 5.0.
Fortunately, authorities confirmed that there is no tsunami risk associated with this earthquake. However, the tremors were felt across a wide area, impacting not only Nagano but also neighboring prefectures such as Gunma, Niigata, Yamanashi, Gifu, and Shizuoka, where varying degrees of seismic intensity were recorded.
The earthquake's impact was most severe in Omachi City, Ogawa Village, and Chikuhoku Village, where a seismic intensity of 5 lower was reported. In addition, several locations in Nagano Prefecture experienced a seismic intensity of 4, including Nagano City, Matsumoto City, and Azumino City. Other areas such as Ueda City and Saku City recorded a seismic intensity of 3.
In response to the earthquake, Nagano Prefecture quickly established an Alert Liaison Council, led by the Director of the Crisis Management Department. This council is tasked with collecting information regarding the situation and any potential damages caused by the earthquake.
JR West Japan reported that the earthquake has caused delays on the Hokuriku Shinkansen line, affecting travel plans for many commuters and travelers in the region. As authorities continue to assess the situation, they are urging residents to remain vigilant and prepared for any aftershocks.
As of now, there have been no reports of significant injuries or extensive damage, but the situation remains under close observation. Residents are advised to stay informed through official channels and to take necessary precautions.
The earthquake serves as a reminder of the seismic activity that Japan regularly experiences due to its geographical location along the Pacific Ring of Fire, where tectonic plates frequently shift and cause tremors. The preparedness and response mechanisms in place are crucial in minimizing the impact of such natural disasters.
In the hours following the earthquake, local authorities and emergency services have been mobilized to ensure the safety of residents and to provide assistance where needed. Community centers have been opened as shelters for those who may have been displaced by the quake.
As the situation develops, updates will be provided by local news outlets and government agencies. The people of Nagano are encouraged to support each other during this time, as community resilience plays a vital role in recovery efforts.
While the earthquake has certainly caused some disruption, the overall response from the authorities has been swift and organized, reflecting Japan's longstanding commitment to disaster preparedness and management. As the region continues to shake off the effects of the quake, residents are reminded to be cautious and to stay tuned for further updates.
In summary, the earthquake that struck Nagano Prefecture on April 18, 2025, has been a significant event, but thanks to effective emergency protocols and community solidarity, the impact has been managed effectively. The ongoing assessment of damages and the readiness for any aftershocks will be crucial in the coming days as the region recovers from this natural event.
