Google translation
News of activity of the Nevado del Ruiz volcano, April 12, 2013, 11:30 (local time)
During this day continues to record the seismic signal of volcanic tremor, associated with the movement of fluids within the volcanic conduits and gas and ash emissions, which has been showing low energy levels.
In the morning it was observed by the webcams located in the area of the volcano, the plume of steam, gases and ash, with an approximate height of 1600 meters above the summit, heading to the northwest of the volcano presenting white, but with the presence of particulate matter (ash) See animation. There have been several reports from yesterday, officials from the National Natural Park Los Nevados and OVSM, fine ash fall in small amounts in areas surrounding the volcano.
Additionally, continued emissions of sulfur dioxide (SO2), evidenced in measurements of equipment installed in the field and through satellite images.
[link to www.ingeominas.gov.co]