Overview

• An explosion on September 13 sent an ash column higher than 5 km above the summit and produced descending pyroclastic flows, according to IGP and CENVUL.
• Monitoring agencies report increased seismicity, frequent explosions and stronger gas emissions, with ash-dispersion alerts issued for Huambo, Huanca and nearby localities.
• Authorities advise staying at least 12 km from the crater, using masks or wet cloths during ash fall and keeping doors and windows closed.
• CENVUL personnel reached about 5,960 meters to observe the crater directly and support real-time alerts and forecasts.
• Municipal, health and civil-defense teams are coordinating preventive measures, while a separate wildfire on Misti triggered an emergency alert in several Arequipa districts.