Overview

• Segemar raised the technical alert at Laguna del Maule to Yellow on August 6 after July monitoring recorded more than 11,000 volcano-tectonic events and ground uplift of up to 4.2 cm per month.
• On August 7, the Yellow alert was extended to Planchón-Peteroa and Puyehue-Cordón Caulle following reports of moderate seismic clusters, crustal deformation and thermal anomalies.
• Argentina’s OAVV and Chile’s OVDAS are coordinating round-the-clock data sharing and surveillance through the Sinagir risk-management framework.
• While an eruption is not expected imminently, authorities caution that magma movement could trigger sudden low-to-moderate explosions without clear precursors.
• Communities near the complexes have been advised to stay clear of active craters, follow official bulletins and update local emergency plans.