The Japan Meteorological Agency has officially raised the eruption alert level for Mount Yake, located on the border between Gifu and Nagano prefectures, Japan, from Level 1 to Level 2. This decision, made on March 4, 2025, is due to increased volcanic activity and seismic activity around the mountain.
According to the agency, volcanic earthquakes with the epicenter near the summit of Mount Yake have been on the rise. Beginning from around 2 PM on March 3, 2025, there was a significant increase in seismic activity. Notably, the number of volcanic earthquakes counted reached 20 by 9 AM on March 4, indicating heightened volcanic activity and potential unrest.
This rise to alert Level 2 reflects concerns about larger eruptions which could impact areas approximately 1 kilometer from the presumed crater. The last time the alert level for Mount Yake was raised was about two and a half years ago, back in July 2022.
The agency outlined specific precautions for local residents. "Caution is advised against large flying rocks within approximately 1 kilometer from the assumed crater area," the Japan Meteorological Agency warned. This cautionary message highlights the significant potential danger posed by volcanic activity, including the possibility of ejected materials during any eruption.
Seismic data indicates not only increased volcanic earthquakes but also signs of slight swelling near the summit of Mount Yake. While there are no major changes detected within the fumarolic activity or ground deformation, the rising activity has prompted this immediate response to avert any possible disasters.
The pattern of volcanic earthquakes recorded reflects alarming changes, with data showing days of low activity followed by substantial increases. The recorded counts were one earthquake on March 1, none on March 2, twenty on March 3, and another twenty by March 4.
Responding to the situation, the Japan Meteorological Agency has urged locals and visitors to adhere strictly to guidelines issued by local governments, which may include restricted access to potentially dangerous areas. They are also advised to stay updated on volcanic status, especially if any changes occur.
Given the risks associated with volcanic eruptions, which can include lava flows, ash fall, and pyroclastic flows, keeping the public informed is pivotal. Experts are monitoring all data closely to assess the situation. For now, the public remains on alert as volcanic monitoring continues.
The advisory signifies a significant evolution with volcanic activity at Mount Yake, emphasizing the importance of vigilance among residents and visitors alike. Community meetings and logistical updates from local authorities will be integrated to promote safety practices and preparedness among the affected populations.
The changes at Mount Yake serve to remind us of the dynamic nature of our planet and the constant need for monitoring volcanic activity, especially as it impacts human safety and infrastructure. The Japan Meteorological Agency remains committed to transparency and timely updates for those living near this active volcano.