In the morning, the seismic signal associated with a volcanic tremor under the Nevado del Ruiz volcano has been saved. It was possible to confirm the ash outlet through web cameras located in the volcano area and in the city of Manizales. The height of the column was about 3000 meters.
With the current wind conditions, which is in the direction Northwest – Southwest, it is possible that ash falls take place on populations of Chinchiná, Villamaría, Manizales, Pereira and the surrounding areas. It is not excluded that the volcanic ashes scattered in other directions if changes of speed and wind conditions occur. This shows that the volcanic system remains unstable. If you get ash fall, report it to the Volcanological and Seismological Observatory of Manizales.
This emission of ash prompted the authorities to temporarily close two airports in the region. The civil aviation agency stated that it closed the airports of Manizales and Pereira as a precaution at 1330 GMT (21:30 Singapore time) after the eruption. This resulted in the cancellation of at least 16 flights on Sunday.
Since this eruptive episode, it was possible to confirm the ash fall on the villages of Santa Rosa de Cabal, Dosquebradas, Pereira, and other surrounding areas.
Currently, the volcanic tremor signal of the Nevado del Ruiz shows a decrease in number of energy and amplitude. Through web cameras, it is possible to observe a gas and steam column which rises to an elevation of about 300 m above the crater.
July 27, 2015. Nevado Del Ruiz, Colombie :
Source : SGC, channelnewsasia.com.