Turrialba volcano (Costa Rica): activity updates and eruption news
Turrialba volcano (Costa Rica): strong explosion last night
Thursday Oct 30, 2014 15:39 PM | BY: T
A relatively large explosion occurred at the volcano last night at 23:40 local time. According to local news, the eruption lasted about 45 minutes and was accompanied by strong seismic activity, which was felt by the local population.
As the eruption occurred at night, there are no visual reports.
At the moment, there is no precise information about the nature (phreatic ?) and size of the eruption (height of eruptive column, ash volume etc) but ash fall was reported from Heredia, 55 km northwest of the volcano, and Coronado, 25 km to the west on the outskirts of the capital San Jose. This suggests the plume was drifting NW.
Volcanologists from OVSICORI-UNA had climbed the volcano's summit yesterday morning and observed very elevated temperatures. Seismometers also recorded phases of tremor during the day.
It is impossible to say whether the eruption was an isolated event or could be the start of a new magmatic eruption of the volcano.
Friday, May 30, 2014
The volcano could be becoming more active with increased degassing. An elevated SO2 concentration in the atmosphere above and near the volcano was visible on satellite data yesterday. Seismic activity appears to be elevated. [more]
Wednesday, Jul 24, 2013
The seismic crisis continues with a swarm of volcanic-tectonic quakes as well as periods of low-frequency tremor and possible small explosion signals (which could suggest small phreatic eruptions). OVSICORI wrote that on 18 July, over 1000 earthquakes were recorded on a single day. [more]
Friday, Jul 19, 2013
The seismic swarm continues but has decreased in strength during the past day. [more]
Monday, Jul 15, 2013
A significant earthquake swarm has started late on 13 July at the volcano and is continuing. This could indicate a rise of magma in progress and eventually lead to new eruptions in the near future. [more]
Wednesday, May 22, 2013
New ash emissions occurred yesterday and produced light ash falls in the outskirts of San José, in the areas of Guadalupe, Tres Ríos, Curridabat, and Ipis (at about 30 km distance). ... [more]