August 28 , 2016. EN. Nevado del Ruiz , Popocatepetl , Mauna Loa , Sinabung .

Home / blog georges Vitton / August 28 , 2016. EN. Nevado del Ruiz , Popocatepetl , Mauna Loa , Sinabung .

August 28 , 2016. EN. Nevado del Ruiz , Popocatepetl , Mauna Loa , Sinabung .

August 28 , 2016.


Nevado del Ruiz , Colombia :

New emissions of ash on the Nevado del Ruiz volcano.

August 27, 2016. In a statement the Colombian Geological Service has confirmed that at 10:50 yesterday, a signal associated with an emission of ash and gas into the atmosphere, was recorded on the volcano Nevado del Ruiz, which has been confirmed by the pilot of an aircraft.


This week, there have been different seismic signals related to fluid dynamics in volcanic conduits, as episodes of volcanic tremors pulses of short duration at different energy levels. Some of them have been associated with emissions of ash in the atmosphere, which were verified via webcam when atmospheric conditions are permitted.

nevado del ruiz
Ash falls on people who are in the direction of the wind regime, as Manizales, Villamaría, Chinchiná and surrounding cities are not excluded.

Source : Caracol.



Popocatepetl, Mexico :

August 27 11:00 h (August 27 16:00 GMT)

In the last 24 hours the seismic records of the surveillance system at Popocatépetl volcano registered 34 low-intensity exhalations, with emissions of gas, steam and ash, two explosions, one yesterday at 15:55 and one today at 05:28, 43 minutes of harmonic tremor and one volcanotectonic event today at 04:18 h, with Mc 1.4.

The cloudy conditions allow observing the volcano continuously, we observed an emission of steam and gas that winds carried to the southwest . Along some lapses of the night was observed incandescence, increasing with main exhalations .



From dawn and up to the time of this report the cloudy condition allow to observe a continuously emission of steam and gas that the wind carry to the southwest.

CENAPRED emphasizes that people SHOULD NOT go near the volcano, especially near the crater, due to the hazard caused by ballistic fragments .

This type of activity is included within the scenarios Volcanic Traffic Light Yellow Phase 2.

Source : Cenapred

Photo : Erik Gomez Tochimani


Mauna Loa , Hawai :

19°28’30 » N 155°36’29 » W,
Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary: Rates of deformation and seismicity at Mauna Loa remain above long-term background levels.

mauna loa

A view of Mokuʻaweoweo, the summit caldera of Mauna Loa, as seen from South Pit (looking to the north-northwest). An eruption in 1940 created the cinder-and-spatter cone visible on the caldera floor (right center). This cone, which is about 114 m (373 feet) high, is the largest cone at Mauna Loa’s summit. The cone on the southwest rim of the caldera (left center) was built during an eruption in 1949. The light-brown tephra from that eruption mantles pāhoehoe flows in the foreground.

Mauna Loa is not erupting. In the past week, earthquakes at Mauna Loa have occurred mostly in the south caldera and upper Southwest Rift Zone at depths less than 5 km (3 mi). Seismicity rates on Mauna Loa have not changed significantly this week and remain elevated relative to the long-term background rate. Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, with inflation occurring mainly in the southwestern part of the magma storage complex.

As magma rises toward Earth’s surface, gases dissolved in the molten rock bubble out and escape through surface vents called fumaroles. HVO established sensors atop Mauna Loa in late 2005 to continuously monitor the concentration of carbon dioxide and sulfur dioxide gases and fumarole temperature within Mokuʻaweoweo, the summit caldera. These sensors have recorded data for nearly 10 years, with some ups and downs in temperatures, but no measured change in the gases.  HVO gas geochemists went to the monitoring site to replace and recalibrate the gas sensors.

Source : HVO


Sinabung , Indonesia :

Residents told to stay away from Sinabung

The local disaster mitigation agency has warned people living in the vicinity of Mount Sinabung to find safe places because of the danger of hot ash from recent volcanic activities.
On Thursday, Mt. Sinabung spewed ash, leaving hundreds of houses in the districts of Simpang Empat, Berastagi and Dolatrayat covered in volcanic debris. The three districts are located far to the east of the volcano. Mt. Sinabung also spewed hot ash the day.
Igan S. Sutawijaya, a researcher with the Volcanology and Geologic Disaster Mitigation Center (PVMBG), said the volcano spewed hot ash 86 times on Thursday.



He predicted the volcano would spew more hot ash in the new few days, most probably to locations east of it. “The possible direction of the hot ash can be seen from the position of the crater,” he said on Thursday. Therefore, it is dangerous for people to undertake activities in the vicinity during a volcanic eruption, he added.

Meanwhile, Karo Disaster Mitigation Agency (BNPD) official Natanael Perangin-angin said his office strengthened coordination with other institutions in anticipation of potential large-scale eruptions in the coming days.
“We have had coordination meetings with villages surrounding Mt. Sinabung to keep a distance from the ‘red zone’,” Natanael said. He added the areas included in the danger zone are those within a 3-kilometer radius from the peak of the mountain, 7 km to the south-southeast, 6 km to the southeast-east and 4 km to the northeast.



Photo : H Riols

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