Activity of Sakurajima, Sheveluch and Stromboli. -Strong earthquake at Bardarbunga/

Around 8:05 p.m. on the 24th, an explosive eruption occurred at the Minamidake Crater of Sakurajima (Kagoshima Prefecture), and large volcanic bombs dispersed about 2.5 km from the crater.

The Japan Meteorological Agency has raised the eruption alert level from 3 (mountain entry restrictions) to the highest level 5 (Evacuation from hazardous residential areas is required). Kagoshima City issues an evacuation order to areas within 3 km of Minamidake's summit crater for 33 families in Arimura-cho and Furusato-cho.

On Sakurajima, the expansion of the mountain body was gradually observed from July 18 by tiltmeters and extensometers, and eruptions were observed once on the 22nd and four times on the 23rd. Both were full-scale eruptions rather than explosive eruptions.

Since the JMA introduced the alert level for volcanic eruptions nationwide in 2007, this is the second time the level has been raised to 5 since it was announced on the island of Kuchinoerabu in the Kagoshima prefecture in 2015, and in Sakurajima.

Kazuhiro Ishihara, professor emeritus of Kyoto University, points out that "although it was frequent in the 1970s and 1980s, it is a large eruption that is in the top three of the last 20 years".

A new report from the JMA informs of an eruptive episode this July 25 at 06:31, accompanied by a plume of ash at 2,200 meters above the crater, and entering the clouds

Sources: JMA, Asahi, VAAC Tokyo

Lava dome growth continues at Sheveluch. Strong fumarolic activity, incandescence of the lava dome, explosions, and hot avalanches accompany this process. Satellite data from KVERT showed an extensive ash plume about 51 km southeast of the volcano, and a thermal anomaly over the volcano.

Tropomi/Sentinel-5P mentions an improved signal of 3.04 DU of SO₂ at a distance of 13.1 km from the Shiveluch. Other nearby sources: the Kliuchevskoi, Bezymianny and Tolbatschik volcanoes.

The aviation code remains orange.

Sources: KVERT, Tropomi and VAAC Tokyo

The National Institute of Geophysics and Volcanology, Etneo Observatory, announces that the analysis of video surveillance cameras, from 02:56 UTC, recorded a series of explosions from the area of ​​​​the North crater of Stromboli, the most strong occurred at 02:56:30 UTC.

The material produced fell abundantly along the entire Sciara del Fuoco, while there were no significant fallouts of coarse material in the Pizzo area. After the more intense initial explosive phase, Strombolian activity continues at the N2 vent of the North Crater area, with frequent low-intensity explosions.

The seismic signal after the maximum amplitude values ​​reached at 2:56 UTC showed a rapid decrease reaching at 3:40 am values ​​similar to those before the explosion. The tilt grating shows a modest momentum shift (about 0.05 mrad) in the N275E component from the TDF (Timpone del Fuoco) station at 2:55 a.m. No significant change in the high frequency GNSS network.

Source: INGV OE, INGVvulcani

On July 24, 2022 at 1:23 p.m. there was a magnitude 4.4 earthquake and almost half an hour later another 4.9 in the northern caldera of Bárðarbunga, Iceland. These larger earthquakes were accompanied by a number of smaller ones.
The last time an earthquake of this magnitude was recorded was in January 2020 and before that in January 2018. Earthquakes of this magnitude are not uncommon in Bárðarbunga and a total of 50 more than 4.0 have been recorded since the end of the eruption at Holuhrauni in early 2015. .
In the photo you can see the so-called Shakemap, which describes the zone of influence of the second earthquake.

Source: IMO