Yesterday afternoon, 23 October, from around 14.04 pm, a strong explosive sequence affected the mouths of the southern crater area of Stromboli (AREA CS in Figure 1), recorded by visible and thermal cameras, placed on Pizzo above the Fossa and at 400 above sea level.
Fig 1 - The crater terrace seen from the thermal camera placed on Pizzo sopra la Fossa, with the sectors into which it is conventionally divided (AREA N, AREA CS). The abbreviations and arrows indicate the names and locations of the active outlets.
This sequence caused the emission of coarse pyroclastic material (fallen outside the crater terrace, on Pizzo sopra la Fossa) and of a dense plume of ash, which rapidly dispersed into the atmosphere towards the southeast quadrant.
In the following hours the activity returned to the usual levels for Stromboli.
Fig 2 - Beginning of the sexplosive sequence taken by thermal and visible cameras located at an altitude of 400 meters above sea level