Slamet volcano (West Java, Indonesia): strombolian eruptions intensify

Strombolian eruptions continue from the active vent in the summit caldera of the volcano and seem to have intensified recently. According to a local newspaper article, 52 explosions were observed during midnight until this morning, which ejected lava bombs to heights of 500-700 meters. Incandescent material is visible like fireworks from observation points at the feet of the volcano.
A particularly strong explosion this morning threw lava bombs to 1500 m distance during a stronger explosion this morning.
According to Surono, head of the National Geological Survey, the activity at Slamet has been increasing recently, but remains confined within a 2 km radius around the crater. The alert status of the volcano has not been changed for now, and remains only (!) at "waspada" ("alert", or 2 on a scale of 1-4).