Strong explosion from Stromboli's NW vent (S1) and a moderate one from the eastern (N2) vent on 11 June 2017 evening
Strong explosion from Stromboli's NW vent (S1) and a moderate one from the eastern (N2) vent on 11 June 2017 evening
The activity of the volcano remains at moderate to high levels. Compared to the update a few days ago, activity at the eastern vents (N1, N2) has decreased a bit, but instead increased significantly from the westernmost vent (S1).

When observed last night, powerful strombolian explosions from this vent, often accompanied by loud detonations, often reached or even exceeded 200 m height, and occurred at intervals of 5-10 minutes.

In total, only 4 of the 5 vents previously observed were active; the second vent (S2) in the western crater area
was not observed yesterday. The central vent only had rare (every 1-2 hours) mild strombolian bursts, but showed frequent mild spattering and intense lava glow.

Activity at the eastern vents was similar as described earlier, but weaker and not as frequent any more (N2: eruptions every 15-20 minutes; N1: eruptions every 30-60 minutes). During some of the more powerful explosions, the western (S1) and eastern (N2) main vents erupted simultaneously.