june 26 , 2016. EN. Turrialba , Fuego , Chaparrastique ( San Miguel) .
june 26 , 2016.
Turrialba , Costa Rica :
Activity has recommenced on the Turrialba : chronology of events.
24/06, 9h46 . In these hours of the night the volcanic tremor amplitude of the Turrialba volcano increases accompanied by ash emanation continue. Winds blow towards the south-west at this time, according to data from the weather station at the top of the volcano.
25/06, 5h20. Since yesterday at 20:05 pm and until now the Turrialba volcano recorded 8 eruptions: Today at 20h05, 21h37, 22h53 , and today at 00h26 , 01h28, 02h26 , 03h10 et 04h20. They will have an intense initial phase which lasts about 10 to 15 minutes. Only eruptions at 20h05 et 21h37 yesterday as well as from 04h20 today could be observed through the thermal camera RSN at the summit, the other, because of cloud cover conditions , most of the time , could not be observed. At this hour, winds is from North–West , according to the meteorological station of the summit.
25/06, 9h10. On the volcano Turrialba yesterday, from June 24 at 20h05 pm and until now, there have been 10 eruptive episodes. the latter has remained until now. These processes are accompanied by tremors (recorded by seismometers RSN) whose magnitude increases to a maximum, stays for a while and then slowly declines. The amplitudes of these tremors associated with ash emissions are minor, with equal amplitudes to those recorded the first days of June and May 2016. Due to bad weather conditions on the volcano, only three of these processes have been observed by thermal camera of the NSR at the top of the volcano (20h05 , 21h37 yesterday and today at 4h20).Note that parts of the eruption column are dispersed to the central crater in small density currents. On the basis of what is observed,eruptions have an intense ash emanation phase which lasts about 10 to 15 minutes. At this hour, the winds blow from the south-west according to the meteorological station of the summit.
25/06, 6h33 . The eruption that began at 16h51, the afternoon of today, June 25 lasted until 17h15 . Then at 17h45, there was another eruption with a duration of about 25 minutes.
Source : Dr. Maurice M. Mora.
Fuego , Guatemala :
The eruption of the Fuego volcano continues 24 hours after starting, always maintaining an incandescent source of 500 meters above the crater, forming a column of ash of 4,800 meters (15,748pies), moving toward the South west and West to the volcanic complex , over a distance of 20 km.
The activity generated by the explosion is accompanied by lava flows in the ravines of El Jute, Las Lajas, with lengths of 2000, as well as constant avalanches of blocks in the Canyon Taniluya.
These explosions generate moderate rumbling with sensitive shockwaves 5 kilometers from the crater.
Continuous ash falls are present on San Pedro Yepocapa, Sangre de Cristo, Morelia, Panimache, Santa Sofía and others in this area.
FG3 seismic station recorded the eruption, the graph of RSAM attached to it still maintains the probability of generating pyroclastic flow throughout the canyons around the volcano.
Therefore, the INSIVUMEH recommends:
Maintain vigilance and continue deemed necessary awaiting the development of the activity.
At the Directorate General of Civil Aviation,
Maintain caution with the flow of air traffic because there are ashes to a height of about 4,800msnm. (15,748pies) to West South West over a distance of 20 km, which may extend to a greater distance.
Source : Insivumeh
Photos : Sofía Letona.
Chaparrastique ( San Miguel) , El Salvador :
The volcano Chaparrastique continues its strong degassing.
The picture at 10:42 that day with the webcam of MARN, shows that persists a strong degassing of the crater mixed with clouds. It is observed that the gas plume is transported to the Southwest of the cone by the prevailing wind in the area.
Analysis of data obtained from the flow of gas emitted by the volcano reflects an average rate exceeding 1,500 tons / day of sulfur dioxide. Suggesting the existence of a deep hot magma body moving in the degassing process.
In the last 24 hours, the seismic vibration of the volcano, recorded by the seismic station VSM, located at 1,700 meters above sea level on the northern flank of the volcano has fluctuated between 154 and 190 units per hour RSAM with an average of 175 units, which exceeds the acceptable threshold of 150 RSAM units. However, a trend of gradual decline was observed, suggesting a decompression of the volcanic system.
The gases from the volcano’s crater are transported by the wind direction, so that communities living in the area may perceive a smell of sulfur. In response, the use of masks or wet tissues is recommended when it is noticed a sulfur odor. Then you try to leave the area.
Degassing the volcano continues intensively, so it is recommended not to be at the top of the volcanic cone because of the danger of material expelled by a sudden explosion, as well as damage to the airways due to magmatic gases being emitted by the volcano.
Thermal image of the gas plume recorded from Caserío Las Cruces, 2.5 km northwest of the crater.
MARN continues its enhanced surveillance, maintains close communication with the General Directorate of Civil Protection and local observers.
The Ministry invites journalists and people not to approach the top of the volcano due to the degree of danger it presents.
Source : Marn.