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A (for Etna standards) very large pyroclastic flow descended this morning on the eastern flank from the area of the new vents that opened yesterday on the eastern side beneath the summit of the New SE crater.
Most likely, explosive lava-snow interaction and destabilization of this area where new magma was pushing its way outside caused a sector to collapse and descend the Valle del Bove flank as a hot turbulent avalanche (=pyroclastic flow).
It reached the bottom of Valle del Bove in less than 3 minutes and traveled about 3 km length, which implies an average speed of 60 km/h, with maximum speed probably in excess of 100 km/h (approx. 65 mph).
I didn't think Etna was supposed to have pyroclastic flows??
Another new effusive vent opened up on the eastern side of the New SE crater around 04:00 this morning, erupting a new short-lived lava flow that stopped being active around 09:00.
The following time-lapse video shows the evolution of lava flows from the various vents, as well as pulses of strombolian activity since the start of the ongoing eruptive episode:
Lava emission at the established effusive vents on the lower eastern flank of the New SE crater has dropped or even ceased, the new vent that opened yesterday morning on the upper eastern flank just beneath the summit is becoming more and more active and now feeds a new lava flow. It also produces dense brown ash plumes as a result of lava pushing its way out and meeting snow and ice on its way, resulting in increased fragmentation (so-called phreatomagmatic activity).
Tremor continues to fluctuate strongly at elevated levels.
A MUST SEE!And with audio!