Éruption — Asosan

Asosan volcano in Aso City, Japan is currently active with increased volcanic tremors and elevated sulfur dioxide emissions measured at 2,700 tons per day. The Japan Meteorological Agency raised the Alert Level to 3 on a scale of 1 to 5, indicating a high-severity situation. Eruptive products may impact areas within 2 km of the crater, with effects potentially felt across a radius of about 50 km.

If you are on site in the affected area, monitor official announcements closely and be prepared to follow evacuation orders if issued. Volcanic ash and gases can affect air quality and visibility. Avoid approaching the volcano and restricted zones. Follow all instructions from local authorities and emergency services.

Consult the Japan Meteorological Agency for real-time updates and guidance specific to your location. If you experience respiratory symptoms or other health concerns, contact local health authorities. This alert is based on official data from the Japan Meteorological Agency.