The Istituto Nazionale di Geofisica e Vulcanologia (INGV) reported that a strong eruption occurred at the volcano at 13:26 local time yesterday.
The powerful event took place from the North crater area, sending pyroclastic material along the Sciara del Fuoco that reached the coast. A rockfall avalanche involved that lifted an abundant ash plume as it descended the slope. The height of the ash plume is unknown yet and was not reported nor by the VAAC or the observatory.
Prior to the explosion, the seismic station recorded a sharp spike in tremor at 13:24 local time, lasting approx. 6-7 minutes.
Deformation monitoring data showed no significant changes.
The local observatory reported that the volcano returned to the normal activity at 19:36 local time.
Stromboli also produces significant above-average eruptions. Such events are nothing unusual on the volcano and occur from time to time, but rarely more frequently than every few months or so. Whether this recent increase is a coincidence or hinting at a more pronounced change in activity level or type is currently unknown. The most likely reason may indicate overpressurized gas-rich magma in the conduit leading to such eruption.
Source: Istituto Nazionale di Geofisica e Vulcanologia volcano activity update 30 September 2022
