Etna and Stromboli volcanoes celebrate the passing of the season in their own way.
From 21:00 UTC a modest Strombolian activity resumed at the southeast crater of Etna, and around 21:53 UTC, a sudden increase in Strombolian activity is observed with a fall of the products on the external slopes of the CSE crater. In addition, the continuous emission of ash produced by the current activity, according to the forecast model, is dispersed in the direction of SEE.
From 10:15 p.m. UTC, the Strombolian activity of the southeast crater turned into a lava fountain 600-700 m high. The moonlit eruptive column, bent east-south-east, reached a height of 8-9 km. In addition, there is an overflow of lava to the southwest.
The National Institute of Geophysics and Volcanology, Etneo Observatory, reports at 00:13 that from the images of the surveillance cameras, we observe that the explosive activity at the level of the Southeast Crater has ceased, the overflow of lava which s The extension in a southwest direction is still active.
The National Institute of Geophysics and Volcanology, Etneo Observatory, reports that a modest lava overflow occurred in the northern sector of Stromboli; the phenomenon started at 04:05 UTC on June 21, 2021 and sold out within minutes. The lava front cools and it affects only the upper part of the Sciara del Fuoco.
Source: INGV OE
During a follow-up by the security team for the Krakatau Islands Nature Reserve and Marine Nature Reserve on June 19, 2021, the teams observed a white plume, occasionally gray, at the main crater, more or less less thick about 25-100 meters from the summit. The weather is cloudy to rainy,
In general, the condition of the area is monitored to be sure that there are no disturbances that can directly damage the area, but there are still traditional fishermen passing through the area.
Activity level remains at 2 / waspada
Sources: 2021.06.19 Anak Krakatau - degassing & Magma Indonesia
On the Nátthaga lava field, created by the eruption in Geldingadalur, an opening (a skylight) has formed. A drone video shows a river of lava, flowing below the surface of the lava field.
This indicates the presence of a complex network of lava flows which flow under the lava field itself in more or less large tubes / tunnels, and allows this fluid lava on a long journey while keeping its temperature high.
Sources: mbls & video Donce Monce
Lava river under the solidified crust of the lava field in Nátthaga - June 20, 2021 - video Donce Monce