July 10 , 2017. EN. Bogoslof , Fuego , Poas , Turrialba , Rincon de la Vieja , Irazu , Etna .

Home / Alaska / July 10 , 2017. EN. Bogoslof , Fuego , Poas , Turrialba , Rincon de la Vieja , Irazu , Etna .

July 10 , 2017. EN. Bogoslof , Fuego , Poas , Turrialba , Rincon de la Vieja , Irazu , Etna .

July 10 , 2017.


Bogoslof , Alaska :

AVO/USGS Volcanic Activity Notice

Current Volcano Alert Level: WATCH
Previous Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE
Previous Aviation Color Code: RED

Issued: Sunday, July 9, 2017, 7:24 AM AKDT
Source: Alaska Volcano Observatory
Location: N 53 deg 55 min W 168 deg 2 min
Elevation: 492 ft (150 m)
Area: Aleutians



AVO Image
Worldview satellite image of Bogoslof volcano collected at 23:13 UTC on June 12, 2017. The circular embayments were formed by a series of more than 40 explosions that began in mid-December, 2016. These explosions have greatly reshaped the island as material is removed and redeposited as air fall. Vigorous steaming is observed from a region to the south of the most active vent areas in the lagoon. Lava extrusion produced a circular dome that first rose above the water on June 5 and grew to a diameter of ~160 m (525 ft) before being destroyed by an explosion early in the day on June 10. Large blocks of the destroyed dome can be seen littering the surface of the island near the lagoon.

Volcanic Activity Summary:
No further ash emissions have occurred at Bogoslof Volcano since the explosion on Saturday, 08 July at 10:15 AKDT (18:15 UTC) and seismicity remains low. We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.

Recent Observations:
[Volcanic cloud height] Not applicable
[Other volcanic cloud information] Not applicable

Source : AVO

Photo : Angeli, Kim


Fuego , Guatemala :

The Fuego volcano in Guatemala is active .

8 JULY 2017. Guatemala’s Fuego volcano , located about 50 kilometers from the capital, generated 26 explosions that created an ash column about 4,400 meters in height and expelled two lava flows of up to 400 meters.

According to the daily bulletin of the National Institute of Seismology, Volcanology, Meteorology and Hydrology (Insivumeh), the ash dispersed about 10 kilometers west and the explosions also generated incandescent pulses about 200 meters above the crater.

The volcano also has a white degasification plume of 4,400 meters above sea level that moves towards the west and there are weak avalanches towards the Santa Teresa, Ceniza, Taniluyá, Ceniza and Trinidad ravines.



The lava flows, between 300 and 400 meters in length, which were very visible during the hours of this morning, fall to the sides of Santa Teresa and Las Lajas.

The volcano, 3,763 meters high, is located between the departments of Escuintla, Chimaltenango and Sacatepéquez, about 50 kilometers from the capital, and so far this year has had about five eruptions.

Another of the volcanoes in constant activity, the Santiaguito, located in the department of Quetzaltenango, has a degassing white plume about 3,000 meters of height that moves towards the southwest.

The other active volcano, Pacaya, recorded an internal tremor associated with the rise of magma and gases to the surface.


Source :   EL NUEVO DIA

Photo : EFE


Poas , Turrialba , Rincon de la Vieja , Irazu , Costa Rica :

Activity report on the state of the Volcanoes Poas, Turrialba, Rincon de la Vieja and Irazu, update of 9 July 2017, at 01h30.

Volcano Poas:
In general, seismographs have sporadically recorded a short-lived, low-amplitude volcanic tremor seismic signal. Volcano-tectonic (VT) -type earthquakes are still significant and are associated with the recording of rock ruptures due to stresses in the crust and are located in the vicinity of the northwest and southwest of the active crater. The higher energy seismic event took place on July 9 at 1:57 am with a magnitude of M2.8, 1 km deep. This earthquake was felt by the population living near the Poas, between Alajuela and Heredia, in places like San Pedro de Poas, Poasito, Bajos del Toro, and Cinchona. The emission of a vigorous blue-white plume of water vapor, gases and magmatic aerosols (fine solid or liquid particles) continues and persists through mouth A (Boca Roja); While mouth B (Boca Azufrada) with a lower temperature emits water vapor, gases and yellow particles of abundant native sulfur.


In general, the volcanic plume has reached altitudes between 300 and 500 meters above the floor of the crater. They were scattered near the volcano. The prevailing winds transported them mainly to the southwest, according to the map obtained with the computer model and the data of the National meteorological institute IMN AERMOD. Therefore Poas Volcano National Park, Animas, Alajuela, San Pedro de Poas, Altura, Villa Inés, Cabuyal, Naranjo, San Ramon, Esquipulas, Palmares, Cirri, Grecia , Tacares, Atenas, among other places nearby. No reports of ash falls were received but a strong smell of sulfur was reported in Alajuela: Central Canton, Sarchi Trojas, San Ramon, Santa Rosa de Poas, and Athens.

The IMO instrument of the AURA NASA satellite, which measures gas (SO2), has again detected significant SO2 emissions from sources in the Great Central Valley of the country, with a westward movement of the Gulf region And the Nicoya peninsula, on the Pacific Ocean. NASA satellite instruments, Terra MODIS, have also detected particles emitted by Poas and Turrialba volcanoes dispersed in the same direction as SO2.

Turrialba Volcano:
The Turrialba volcano has a low and medium amplitude fluctuating volcanic tremor signal and frequent low frequency sismo – volcanic earthquakes (LP, long period), both associated with fluid movements (water, gas, magma ). The emission of a bluish plume, rich in water vapor, magmatic gases and aerosols (very fine liquid or solid particles) continues to be emitted passively (non-explosive). An incandescence continues to be visible in the western crater through the webcams, including observable from the top of the Irazu volcano.


L’image contient peut-être : 1 personne, nuage, montagne, ciel, plein air et nature

The wind dispersed the plume at low altitude in a west-south-westerly direction according to the model and data from the meteorological IMN AERMOD National Meteorological Institute. No ash has been reported in the last 24 hours.

The OVSICORI-UNA volcanic gas and aerosol station located east of San José Coronado- (UNA-EMVA) indicates that during the 8th and 9th of July, at Coronado, the prevailing winds (trade winds NE And E) carried small amounts of SO2 gas and very fine aerosols (PM1, PM2,5 and PM10) emitted by the Turrialba volcano in the southern part of the Great Central Valley (south of San José and Cartago).

Rincón de la Vieja Volcano:
No significant volcanic activity has been reported during the past 24 hours.

Irazu Volcano:


Résultat de recherche d'images pour "irazu"

A surface swarm of volcano-tectonic earthquakes was recorded by the OVSICORI-A seismograph network located on the lrazu between 00:00 and 02:00 on the morning of 9 July. These earthquakes are located between 4 and 5 km southwest of the volcano’s active crater, at depths of less than 3 km, with amplitudes less than M2,0, and are associated with landslides on the flank West of the Irazu volcano.

OVSICORI-A remains vigilant on seismic and volcanic activity.

Source : Ovsicori

Photos : Blas Enrique Sanchez , , Ovsicori , Costa Rica guide.


Etna , Sicily :

Our friend Boris Behncke delights us with his photos of the Sicilian giant.

L’image contient peut-être : ciel, nuage, montagne, plein air et nature

After a few weeks of total silence, Etna produced small ash emissions on 9 July 2017.


Source : Boris Behncke



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