South-central Chile's Nevados del Chillán volcano enters active eruptive phase 15 June 2026; ash dispersal and SO₂ emissions threaten regional air quality and aviation.
🌋 OPEN LIVE 3D EARTHQUAKE MAPNevados del Chillán, a stratovolcano straddling Chile's Bío Bío and Araucanía regions at 3,186 metres elevation, has entered an active eruptive phase as of 15 June 2026. Located 36.87°S, 71.38°W in south-central Chile, the volcano poses immediate risks to regional air quality, aviation corridors, and downstream lahars. USGS and SERNAGEOMIN monitoring networks confirm sustained gas emissions and thermal activity at the summit crater complex. Nearby communities and Santiago's airspace—220 kilometres north—face potential ash dispersal over coming days.
Nevados del Chillán sits atop the Nazca–South American subduction zone, where the Nazca Plate descends beneath the continental margin at ~8 cm/year. This subduction generates crustal melting 100–150 km beneath the surface, producing magma that ascends through fractured rocks and feeds the volcano's persistent fumarolic system. The current activity reflects renewed degassing and shallow magma migration into the upper volcanic edifice, driven by volatile-rich basaltic melts sourcing from the mantle wedge.
Real-time NOAA satellite thermal infrared data (MODIS, VIIRS) detect heat anomalies at the summit; USGS seismometers capture tremor frequency and magnitude. Pandita Data's 3D volcanic simulation integrates SERNAGEOMIN gas flux measurements and topographic models to forecast ash fall patterns and lahars along river valleys. Atmospheric soundings from Chilean meteorological stations constrain wind vectors for dispersal prediction.
Ash fall possible across central Chile; lahars threaten Río Longaví and Río Niblinto drainages. SO₂ concentrations may exceed air-quality thresholds in Los Ángeles and Chillán cities (50–80 km downwind). No current lava-flow threat to inhabited zones.
Track Nevados del Chillán's thermal and seismic signals in real-time via Pandita Data's volcano simulation module—updated hourly with USGS and NOAA feeds.