A lava overflow started from Stromboli’s North Crater area at around 10:00 UTC (11:00 LT) on November 9, 2025, feeding a lava flow on the upper Sciara del Fuoco. The activity, observed by the National Institute of Geophysics and Volcanology (INGV) through surveillance cameras, was accompanied by modest but continuous spattering from at least two vents in the North Crater area.
The National Institute of Geophysics and Volcanology (INGV), Etneo Observatory, reported that a lava overflow from the North Crater area began around 10:00 UTC (11:00 LT) on November 9. The lava flow is confined to the upper portion of the Sciara del Fuoco, a steep scar on the volcano’s northwestern flank that channels eruptive material toward the sea.
INGV noted that the overflow is accompanied by sustained spattering activity from at least two vents in the North Crater area. The spattering and collapse of unstable material are producing small ash puffs and the rolling of incandescent blocks down the Sciara del Fuoco.
Seismic data show no significant variations compared to previous days. Only a few small events were recorded along the Sciara del Fuoco at 08:43 and 10:14 UTC. Volcanic tremor amplitude remains within normal background levels, and ground deformation monitoring networks have not registered significant changes.
Surveillance camera images acquired at 14:00 UTC show that the lava overflow fed by the North Crater area has ceased and is cooling. Ordinary explosive activity and moderate spattering activity in the North Crater area persist, at varying intensities.
No variations in overall eruptive dynamics or alert levels have been reported.
Stromboli is one of the most active volcanoes in the world, characterized by persistent mild explosive and effusive activity. The current event is consistent with the volcano’s normal eruptive pattern, where periodic lava overflows occur from vents within the summit crater terrace.
References:
1 COMUNICATO DI ATTIVITA’ VULCANICA – STROMBOLI – INGV – 11:43 UTC on November 9, 2025