Overview
- A sudden rise in volcanic tremor late Friday produced a strombolian lava fountain at Etna’s Voragine crater and an ash cloud that drifted southeast toward Catania.
- INGV reported that a new eruptive vent opened in the Valle del Bove at about 2,550 meters near Monte Rittmann on Saturday morning, and field surveys are under way.
- Seismic tremor remains at high levels but has shown a slight decline, infrasound activity is moderate, clinometers still record a summit trend change that began on August 6, and GNSS networks show no significant ground deformation.
- Catania–Fontanarossa operations were limited by a red aviation notice with arrivals suspended until midday and several incoming flights diverted or rescheduled to Palermo or Rome; SAC urged passengers to check flight status.
- Trenitalia and airport operators set up extra train services and passenger advisories to move affected travelers, and authorities say continued INGV monitoring could prompt more operational changes if signals or ash patterns shift.