Based on satellite imagery and CVGHM, the Darwin VAAC reported that a diffuse ash plume from Batu Tara drifted W on 5 May.

Basaed on visual observations, pilot reports and satellite data, Batu Tara volcano is producing near continuous ash eruptions with plumes rising to 1-2 km a.s.l.

The new eruption of Batu Tara on the tiny island with the same name is getting more intense. As explosive activity has set on, ash clouds are ejected to up to 2-3 km above the small volcanic cone. As a safety measurement, mainly to protect them from tsunami (that might be triggered by earthquakes, landslides or pyroclastic flows) around 7,000 inhabitants of the closest neighboring island, Lembata 50 km to the south, were evacuated. Fishermen, also, have been warned to stay at least 2 miles (3.2 kilometers) from the volcanic island.

Ash plumes from Batu Tara volcano (Lesser Sunda Islands) were visible at an altitude of 4,3km (14,000 ft) on 14 March.