The PVMBG reported on October 19, 2019, eight eruptive episodes in Krakatau; gray to black plumes were observed up to a height of 200 meters, and white fumes between 25 and 150 meters above the crater.
The seismicity of the day is marked by 8 eruption earthquakes, 1 blast earthquake, 1 shallow volcanic earthquake, 3 volcanic earthquakes and a continuous tremor of amplitude between 1 and 38 mm, dominating at 2 mm.
A small eruption occurred at Pavlof, on the Alaskan Peninsula, on October 19, detected by infrasound and seismic networks. Cloud cover does not indicate whether ashes have been emitted, but if so, they should only concern the summit area.
Due to higher than normal settings, the alert level was changed to Advisory and the aviation code to Yellow.
VAAC Buenos Aires reports on October 19th an explosion accompanied by a plume of ashes at Copahue, on the border between Chile and Argentina, at 3,000 meters altitude (flight altitude 100) moving southwards 35 km away.
Source: VAAC Buenos Aires
Indonesia and Sunda Islands - forest fires on Rinjani and Tambora - Doc. Himawari-8 - one click to enlarge
On October 19, wildfires affected the flanks of the Rinjani volcano, on Lombok, and Tambora volcano, on West Nusa Tenggara.
Sources; Himawari-8 and Doc images. Mirova