INGV reported that during 21-27 November activity at Stromboli was characterized by ongoing explosions at three vents in Area N (North Crater area) and two vents in Area C-S (South-Central Crater area); weather conditions prevented visual confirmation of activity during 21-23 November. Low-intensity explosions from the N1 vent (Area N) ejected course material (bombs and lapilli) less than 80 m high at a rate of 3-7 explosions per hour. Spattering and occasional low-intensity explosive activity was visible at the N2 vent (Area N). Explosions from at least two vents in S2 (Area C-S) ejected ash and coarse material over 250 m above the vent at a rate of 6 events per hour.

Geological Summary. Spectacular incandescent nighttime explosions at Stromboli have long attracted visitors to the "Lighthouse of the Mediterranean" in the NE Aeolian Islands. This volcano has lent its name to the frequent mild explosive activity that has characterized its eruptions throughout much of historical time. The small island is the emergent summit of a volcano that grew in two main eruptive cycles, the last of which formed the western portion of the island. The Neostromboli eruptive period took place between about 13,000 and 5,000 years ago. The active summit vents are located at the head of the Sciara del Fuoco, a prominent scarp that formed about 5,000 years ago due to a series of slope failures which extends to below sea level. The modern volcano has been constructed within this scarp, which funnels pyroclastic ejecta and lava flows to the NW. Essentially continuous mild Strombolian explosions, sometimes accompanied by lava flows, have been recorded for more than a millennium.

Source: Sezione di Catania - Osservatorio Etneo (INGV)