Volcanic Activity Worldwide: Monday June 20, 2016

Pyroclastic flow (glowing avalanche) at Sinabung this morning (00:40 local time) (photo: Endro Lewa / facebook)

Canlaon (Central Philippines): The volcano remains restless. A small explosion occurred Saturday morning at 09:19 local time.
According to PHILVOLCS, the eruption which lasted less than 30 minutes was entirely steam-driven (phreatic or hydrothermal), i.e. caused by overheated ground water flashing into steam inside the hydrothermal system overlying a (probably small) body of magma, but no magma itself was projected to the surface.

A small plume of ash rose approx. 400 m and caused minor ash fall in San Miguel, Gintubdan and Araal in La Carlota, Negros Occidental.
PHILVOLCS recorded ongoing inflation (sign of magma intruding at depth), small earthquakes (3 volcano-tectonic events on 17) and observed steaming from the volcano producing a plume that rose about 300 m.

Sinabung (Sumatra, Indonesia): The volcano continues to erupt with little changes – effusing viscous lava at slow pace and feeding a prominent lava lobe on the SE flank.
A small collapse of parts of this last night caused an incandescent avalanche documented by avid Sinabung volcano-follower and photographer Endro Lewa.

Kilauea (Hawai’i): HVO reports no significant changes in the eruption.
The new lava flow headed to the SE from Pu’u O’o continues to advance fast. During the past week, it made progress of 1200 meters, i.e. on average almost 200 m per day.

Its front is currently approx. 6 km from the coast and it is headed currently towards the Royal Gardens area, where it will meet steeper ground on the Pulama pali which likely will speed up its advance before slowing down again once in the vast coastal plain. If the current advance continues, it will take about 10 days to reach the top of pali, HVO wrote. Whether and when new lava will eventually reach the ocean is impossible to predict: the road to there is still long. However, chances of this happening within the next few months are quite high and increasing.
At the summit, the lava lake inside Halemaʻumaʻu’s inner pit crater continues to circulate and spatter, and its surface is currently approx. 30 m below the crater floor. Seismic activity across the volcano has been low recently. The long-term deformation trend shows continued inflation beneath the summit and uppermost Southwest Rift Zone.

Santiaguito (Guatemala): Following a relatively calm period of 3 weeks (no significant eruptions since 25 May), a powerful vulcanian explosion occurred at the Caliente lava dome again yesterday at 09:15 local time, sending an mushroom-shaped eruption column approx. 5 km into the sky.
Pyroclastic flows descended the base of the cone and ash falls occurred in downwind areas (as usual) to the west and southwest, including the towns and villages of Loma Linda, San Marcos Palajunoj, San Felipe Retalhuleu, El Nuevo Palmar and others. No evacuations were ordered and no significant damage was reported.

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 13 May 2016)
Bagana (Bougainville Island, Papua New Guinea): intermittent mild ash emissions (updated 23 May 2016)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 28 Nov 2015)
Bristol Island (United Kingdom, South Sandwich Is): new eruption since late April 2016 (updated 6 Jun 2016)
Colima (Western Mexico): intermittent mild to moderate explosions (updated 1 Jun 2016)
Copahue (Chile/Argentina): seismic unrest, occasional ash venting (updated 22 Mar 2016)
Dukono (Halmahera): mild strombolian activity, continuous intense ash emissions (updated 1 Jun 2016)
Erebus (Antarctica): active lava lake in summit crater (updated 8 Dec 2014)
Erta Ale (Danakil depression, Ethiopia): overflowing lava lake (updated 2 Mar 2016)
Fuego (Guatemala): lava flows on S and W flanks, lava fountaining from summit vent (updated 23 May 2016)
Ibu (Halmahera, Indonesia): stromolian and phreatomagmatic explosions (updated 29 Oct 2015)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 5 May 2016)
Kerinci (Sumatra): intermittent ash explosions (updated 5 Jun 2016)
Kilauea (Hawai’i): new surface lava flows from breakouts N and NE of Puu Oo since 24 May 2016 (updated 28 Apr 2015)
Kliuchevskoi (Kamchatka): mild strombolian activity in summit crater (updated 4 Jun 2016)
Langila (New Britain, Papua New Guinea): ash emissions (updated 13 May 2016)
Masaya (Nicaragua): active lava lake ini summit crater (updated 6 Jun 2016)
Nyiragongo (DRCongo): new vent on crater floor (updated 1 Jun 2016)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Pacaya (Guatemala): intense spattering from intra-crater cone (updated 29 Mar 2016)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 13 Jun 2016)
Reventador (Ecuador): lava flow on SW flank (updated 24 Feb 2016)
Sakurajima (Kyushu, Japan): sporadic vulcanian explosions from Minamidake and Showa crater (updated 3 Jun 2016)
Sangay (Ecuador): mild strombolian activity in summit crater (updated 20 May 2016)
Santiaguito (Guatemala): intermittent strong explosions from growing Caliente dome (updated 26 May 2016)
Semeru (East Java, Indonesia): lava flow, small strombolian explosions (updated 13 Jun 2016)
Shiveluch (Kamchatka): growing lava dome (updated 9 May 2016)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 10 Jun 2016)
Stromboli (Eolian Islands, Italy): weak, intermittent strombolian explosions (updated 23 May 2016)
Suwanose-jima (Ryukyu Islands): strombolian explosions (updated 13 Jun 2016)
Turrialba (Costa Rica): intermittent mild to moderate ash emissions (updated 3 Jun 2016)
Villarrica (Central Chile): lava lake in summit crater, spattering, strombolian explosions (updated 4 Apr 2016)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 13 Nov 2015)