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Volcanoes Today, 27 Dec 2018: Etna volcano, Fuego, Popocatépetl, Krakatoa, Shiveluch, Reventador, Mayon, Nevados de Chillán

Thursday Dec 27, 2018 20:00 PM |

Science News Tall steam and ash plume rising from Etna's Bocca Nuova (GuidEtna webcam)crater

Tall steam and ash plume rising from Etna’s Bocca Nuova (GuidEtna webcam)crater

Science News Satellite image of Shiveluch volcano on 27 Dec 2018

Satellite image of Shiveluch volcano on 27 Dec 2018

Science News Satellite image of Ebeko volcano on 26 Dec 2018

Satellite image of Ebeko volcano on 26 Dec 2018

Science News Krakatau with steam explosions seen yesterday (image:  Sutopo Purwo Nugroho @Sutopo_PN / twitter)

Krakatau with steam explosions seen yesterday (image: Sutopo Purwo Nugroho @Sutopo_PN / twitter)

Science News Satellite image of Sabancaya volcano on 26 Dec 2018

Satellite image of Sabancaya volcano on 26 Dec 2018

Etna (Sicily, Italy)

: The decreasing trend in surface and earthquake activity on and around Etna continues and there is little to nothing left of the vigorous flank eruption that had started on Christmas Eve (24 Dec 2018). However, the volcano is far from quiet and there are indications that more and potentially more dangerous activity could be in the making.

A tell-tale sign that the flank eruption could only be a prelude is that magma continues to stand high inside the volcano’s conduit: glow and intense gas and steam emissions are visible from the Bocca Nuova, producing a tall plume rising vertically into the evening sky. The recent eruption has drained only very little of the available magma. Will more come out soon?

… [read more] … [show less]

Eugenio Priviera, director of INGV (the National Institute of Geology and Volcanology) mentioned in an interview quoted in a Sicilian newspaper that new eruptive fissures could open up even at lower altitudes. INGV posted a special report about the current situation and the recent earthquakes on its blog site:

Even though the current surface phenomena are weakening, the general decrease in eruptive activity could be misleading: information obtained from geophysical cannot exclude that magma supply into the same dike that fed the recent eruption is still in progress, and could open its way with new fissures down to altitudes beneath 2,400 m, especially in the area of the southern and western walls of Valle del Bove.

Shiveluch (Kamchatka): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY.

…27 Dec:Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20181227/0148Z FL360 REPORTED OBS VA DTG:27/0220Z

Ebeko (Paramushir Island): (26 Dec) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20181226/2100Z FL110 EXTD NE REPORTED OBS VA DTG:26/2230Z

Mayon (Luzon Island, Philippines): (27 Dec) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20181227/0017Z FL100 REPORTED OBS VA DTG:27/0020Z

Krakatoa (Sunda Strait, Indonesia): The violent explosive activity caused by magma-water interaction continues at the volcano, from the area where the summit cone collapsed on 22 Dec and now exposes the vent to sea water.

A

video of an overflight earlier today

shows powerful steam explosions of this so-called Surtseyan activity, generating dense steam and ash clouds, often ejected as “fingers” of larger ejected rock fragments with training steam behind, as well as billowing surges that shoot horizontally above the water.

… [read more] … [show less]

Civil Protection (BNPB) raised the alert level of the volcano from Waspada (Level II) to Siaga (Level III) on the Indonesian 1-4 scale and the exclusion zone was extended from 2 to 5 kilometers around the volcano, where people are prohibited from carrying out activities.

Kondisi Gunung Anak Krakatau yang divideokan dari KRI Teluk Cirebon 543 pads 26/12/2018, 16.33 WIB. Erupsi masih berlangsung. Tipe erupsi Gunung Anak Krakatau strombolian yang mengeluarkan abu vulkanik dan lontaran batu pijar terus menerus. Status Waspada (level 2). pic.twitter.com/ESydS9UCTc

— Sutopo Purwo Nugroho (@Sutopo_PN) December 26, 2018

Popocatépetl (Central Mexico): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: POSS VA EM

Fuego (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: POSS VA EM

Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: POSS VA EM

…27 Dec:Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS HAVE CEASED.

Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: INTERMITTENT PUFFS OF VA

…26 Dec:Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: SPORADIC STRONG PUFFS

Nevados de Chillán (Central Chile): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: INTERMITTENT EMISSION OF VA


Previous news

Wednesday, Dec 26, 2018

Stromboli (Eolian Islands, Italy)

: Following an increase in activity detected at the volcano, Italian Civil Protection raised the alert level from “green” to “yellow”, pointing out that the volcano is in “an unstable situation” and should be monitored more closely. …

[more]

Tuesday, Dec 25, 2018

Etna (Sicily, Italy)

: Bad weather has mostly prevented clear sights of the new flank eruption today, but it seems that while it is still going on, lava emission from the new fissure vent high in the Valle del Bove that opened yesterday has decreased. …

[more]

Monday, Dec 24, 2018

Etna (Sicily, Italy)

: The following video shows the beginning of Etna volcano’s new flank eruption, starting around noon on 24 Dec 2018: a series of quakes accompanies the progressive opening of several fractures, accompanied by strong ash emission, on and below the SE crater. …

[more]

More on VolcanoDiscovery:

Tours to active volcanoes

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Science News Daily active volcano map

Active volcanoes map

: Check which volcanoes are currently active (erupting). Our daily updated maps give a quick overview.

Bromo volcano photos

: Bromo is one of Indonesia’s most visited volcanoes. It is the most active vent inside the huge Tengger caldera and erupts every few years.

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