The Phivolcs / Sorsogon did take samples of ash after the eruption of Bulusan of 10 June 2016, to determine if there are changes in chemical composition between these newly issued ashes and those of previous eruptions. E.Laguerta, a volcanologist, said that there is no cause for alarm if it corresponds to a phreatic activity, normal for this volcano.
Waiting the results of analyzes by the Central Office of Phivolcs, Bulusan other parameters remain monitored: inflation / deflation, SO2, seismicity.
Although the phreatic eruptions of Bulusan emit a minimal volume of ash and not concentrated, small lahars are expected around the volcano, and protocols for the areas to be evacuated, including 12 villages, are activated by the Provincial Disaster Risk reduction and Management Office
Phivolcs 14 & 06.15.2016 and 13.06.2016 Manila Bulletin; Inquirer 14/06/2016
In Colombia, a volcano-tectonic earthquake was recorded at Cerro Machin on June 13, 2016 at 8:53 p.m. local time. It is associated with the internal fracturing of rocks, of magnitude 2.2 (local) and to a depth of 3.9 km, at 6.7 km southwest of the main dome. The tremor was felt by the people of Cajamarca. The alert level is kept at Amarillo (III) / Changes in volcanic activity.
Sources: Observatorio volcanologico sismologico / Manizales
The Sinabung dome is growing steadily - see the differences in 3 days in photos - and its considerable and unstable mass raises fears of new collapses and pyroclastic flows.