Eruption updates & news from Stromboli:
Stromboli volcano (Italy): violent explosions with eruption column rising 2 km, triggering panic
Wednesday Jul 03, 2019 16:19 PM | DOOR: T
View of the eruption column at Stromboli volcano (image: Francesca Utano / VolcanoDiscovery)
Thermal image of the first explosion and lava overflow (image: INGV Catania)
The large explosion at 16:54 local time seen on the thermal cam on the summit ridge, Pizzo (image: INGV Catania)
The thrid explosion at 17:03 local time (image: INGV Catania)
A series of at least two very large explosions occurred this afternoon at the volcano. They probably rank among the largest recorded at the volcanoes in decades.
Seismic trace of the explosions (image: INGV Catania)
At approx. 16:51, 16:54, and 17:03 local time, it seems that the the western (or otherwise the central) vent produced powerful eruptions (in particular the latter two), which ejected glowing bombs all over the summit area and produced an eruption column that rose approx. 3-5 km.
Hot bombs and lapilli falling in the vegetated slopes of the island caused a series of fires. Panic was reported to have broken out among some residents in the village of Ginostra (which is at only 2 km horizontal distance from the crater), but there are no reports of injuries.
A newspaper article mentioned that some tourists fled into the sea and there are talks about evacuation of the island, although the situation is not clear at the moment.
What is is clear is that this so-called paroxysm today was one of the largest events of its kind on the volcano not only during recent years, but decades. Fortunately, such sudden large explosions have been rare at Stromboli (on average one or two per year), but they not entirely unusual. Unfortunately, they are almost impossible to predict and pose a constant risk for anyone visiting the summit area.
According to local news, the eruption was preceded by an overflow of lava into the Sciara del Fuoco, which seems to have been associated with the first explosion at around 16:51 (see image), suggesting that they were the result of a sudden surge in magma supply.
This can be seen in a most impressive way during the following video (from around minute 1:08) showing the arrival of the giant magma bubble bursting at the surface, measuring probably more than 200 m in diameter:
From photos circulating on the social media, it also seems that the flows and/or the subsequent larger explosions also produced small pyroclastic flows traveling down the Sciara:
Stromboli in azione pic.twitter.com/iH2iVMLIep— marco ortenzi (@mortenzi) July 3, 2019
Friday, Apr 19, 2019
The activity at the volcano remains stable, fluctuating between low to moderate levels. Strombolian explosions occur at rates of few minutes interval on average from several vents in the crater terrace. ... [meer...]
Thursday, Mar 21, 2019
During the past weeks, activity has gradually decreased to the volcano's typical low to normal levels of activity. ... [meer...]
Tuesday, Jan 29, 2019
The activity at the volcano has decreased again to average "moderate" levels. ... [meer...]
Stromboli volcano (Italy): frequent and strong explosions from 6 vents, observation report from close
Sunday, Jan 20, 2019
The activity of the volcano remains elevated - magma is still standing high inside its conduits. ... [meer...]
Tuesday, Jan 15, 2019
The activity remains at similar, high levels as during the past week: Near-continuous spattering is being observed from the new cinder cone in the NE crater where the magma column seems to be very near its rim. ... [meer...]