After an increase in tremor on the morning of April 28, the Turrialba issued a plume of gas, vapor and aerosols.
Seismicity remained at a high level, mainly characterized by the tremor, associated with the movement of internal fluids all the day of April 29.
During the morning of 30 April, (report 30.04 / 5:10 / RSN) ash emanated from one of the active crater emission points. The ashes are scattered to the Central Valley
At 8h, the ash outlet is maintained, continuously and passively. At this time, the RSN recognizes 5 h. of emanation of ash, and the first drop is report on Santa Cruz. Two points of emission are distinguished, one emitting ash, the other gases and water vapor. The amount of emitted ash fell around 11:15 am, but the tremor maintaining .
Around 4:50 p.m., we see only a light ash outlet and the RSN reports a decrease in tremor
- Rapports du Red Sismologica Nacional / RSN / Dr. Maurice M.Mora
- Rapports de l’Ovsicori