News of Sakurajima, Sheveluch, Nyiragongo and Alaska volcanoes.

At Sakurajima, explosive activity continues with many episodes. A random translation of the Japanese does not follow these ... some images of the JMA webcam give us an idea.

Two episodes, however, have to be noted: on 17 September at 17:27, which was accompanied by a plume of ash 1,000 meters above the Minamidake and caused fires.

On 18 September at 18:27 local time, the explosion was accompanied by a plume of ash 2,000 meters above the crater, dispersed to the south.

Sources: JMA, My Kagoshima / Twitter and VAAC Tokyo

In Kamchatka, Sheveluch continues its explosive-extrusive eruption; the dome continues to grow, marked by incandescence and pyroclastic flows of collapse. A plume of vapor and gas, containing some ashes, continues to be emitted.

Sources: KVERT & Sentinel / Copernicus

Good news about monitoring volcanoes:

On 16 September, Charles Balagizi / GVO announced the installation of a MultiGas portable station on the edge of the Nyiragongo crater, thanks to the collaboration of the USGS Volcanoes.

It should contribute to prevention ... a million and a half people are likely to be threatened by an eruption.

The Alaska Volcanoes Observatory (AVO) announces major upgrades to volcano monitoring equipment during the 2019 summer season.

Improvements were made to the following 13 volcanoes: Akutan, Augustine, Dutton, Gareloi, Tall Sitkin, Iliamna, Kanaga, Katmai, Korovin, Makushin, Okmok, Tanaga and Westdahl.

The new ground instrumentation, which includes seismometers, infrasound sensors and web cameras, greatly enhances AVO's ability to detect disorders, predict eruptive activity, and alert volcano hazards in a timely manner.