January 28, 2013 – A stronger than usual explosion produced an ash plume spotted on satellite data at 7,000 ft (2.1) km altitude today (VAAC Darwin).
Batu Tara is a small island volcano 50 km north of Lembata Island in the Flores Sea. It is frequently active, producing ash eruptions rising to hundreds or few kilometers elevation.
Eruptions from Batu Tara
Until 2006, the only confirmed historical eruption from Batu Tara were during 1847-52, which produced explosions with volcanic bombs and a lava flow.
On July 1st, 2006, Batu Tara was observed erupting again. An ash plume rose to 5000 ft (ca 2 km). Since then, it has been erupting frequently. Most eruptions were strombolian or vulcanian type, with explosions producing ash plumes of 1-2 km, similar to Anak Krakatau’s activity.
In March 2007, a phase of stronger eruptions promted the evacuation of 15000 people from Lembata Island nearby. – Volcano Discovery