Stromboli (Eolian Islands, Italy): Since 11 July, the volcano has been calmer compared to the previous weeks. No new lava overflows on the Sciara del Fuoco have occurred since 10 July, but who knows if a next surge of magma is already underway soon?
Etna (Sicily, Italy): No significant variations in activity have occurred during the past days. Small lava flows are being fed by the new fissure vent at the eastern base of the NE crater. At the vent, this activity is accompanied by spattering, sometimes resembling strombolian-type explosions with ejections up to approx. 100 m in height.
2 spatter cones have been growing at the vents. They have been called “hornitos”, although this term strictly spoken refers to smaller chimney-like structures that can form on top of skylights above lava tubes, where degassing jets throw out small amounts of lava to pile up to form them.
Starting from around 7 July, the lava flow has formed a second branch further to the north. Its furthest flow front has reached a length of approx. 1.5 km.
Bulusan (Luzon Island, Philippines): There are signs the volcano is becoming restless again. PHIVOLCS detected an increase in seismic activity and slight deformation of the volcanic edifice.
For the time being, no eruption is expected in the near to medium future, and the Philippine scientists keep the alert level of the volcano at its lowest level, where it had been since 2012 after the last eruption in 2011.
Authorities, however, advised to not to approach the high-risk zone of the volcano, defined by a 4 km radius around its summit.
Santa María / Santiaguito (Guatemala): Activity at the volcano has remained essentially unchanged and been relatively low. A block lava flow remains active from the eastern rim of the Caliente dome, which shows strong degassing and produces occasional small explosions.
Fuego (Guatemala): A new lava flow is active on the southern upper slope of the volcano. It had a length of 400 m this morning, INSIVUMEH reported. Glowing rock avalanches detach from its fronts and reach the vegetation line.
Explosive activity has been at average, low to moderate, levels with strombolian-type explosions producing ash plumes rising up to approx. 800 m above the summit.
San Miguel (El Salvador): Chaparrastique volcano has started to produce small explosions and significant ash emissions. An increase of the ongoing eruption could occur any time and is expected to occur either from the summit vent or from the northern flank (because earthquakes have been clustered under this part of the volcano during the past months).
El Salvador’s Ministry of Natural Resources (MARN) informs that the volcano’s internal vibration (tremor) increased dramatically, to more than 25 times normal levels, since Thursday morning.
Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
Bagana (Bougainville Island, Papua New Guinea): ash explosions (updated 27 May 2014)
Barren Island (Indian Ocean): intermittent activity, likely strombolian-type and/or lava flows (updated 4 Feb 2014)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 7 Jul 2014)
Colima (Western Mexico): extrusion of lava flow from summit, intermittent explosions (updated 10 Apr 2014)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 28 Jun 2014)
Erebus (Antarctica): active lava lake in summit crater (updated 21 Jan 2012)
Erta Ale (Ethiopia): active lava lake in northern pit crater, active hornito with intermittend flow in southern crater (updated 11 Jan 2013)
Fuego (Guatemala): strombolian explosions from summit crater, intermittent lava flows (updated 14 Jul 2014)
Ibu (Halmahera, Indonesia): growing lava dome, occasional ash emissions (updated 30 Mar 2014)
Kilauea (Hawai’i): new lava flow from vents on NE flank of Pu’u ‘O’o (updated 13 Aug 2013)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 25 Jul 2013)
Manam (Papua New Guinea): degassing, occasional ash venting (updated 28 Aug 2013)
Marapi (Western Sumatra, Indonesia): sporadic explosions (updated 27 Mar 2014)
Nishino-shima (Volcano Islands): lava effusion enlarging the new island (updated 30 Jun 2014)
Nyamuragira (DRCongo): lava lake in summit crater (updated 7 Jul 2014)
Nyiragongo (DRCongo): active lava lake in summit crater (updated 26 Feb 2014)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Reventador (Ecuador): ash emissions, explosions (updated 2 Jul 2014)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 7 Jul 2014)
San Miguel (El Salvador): ash emissions, small explosions, increasing tremor (updated 14 Jul 2014)
Sangeang Api (Indonesia): growing lava dome & lava flow (updated 7 Jul 2014)
Santa María / Santiaguito (Guatemala): generation of hot lahars (updated 14 Jul 2014)
Semeru (East Java, Indonesia): growing lava dome, ash venting and small to moderate explosions (updated 25 Jul 2012)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 7 Jul 2014)
Sinabung (Sumatra, Indonesia): effusion of viscous lava, steaming, ash emissions (updated 10 Jul 2014)
Slamet (Central Java): strombolian explosions from central crater (updated 4 Jul 2014)
Stromboli (Eolian Islands, Italy): strombolian explosions from summit crater, intermittent lava flows (updated 14 Jul 2014)
Suwanose-jima (Ryukyu Islands): strombolian activity in summit crater (updated 19 Jun 2014)
Ubinas (Peru): degassing, sporadic small explosions and ash venting (updated 7 Jul 2014)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)
Zhupanovsky (Kamchatka, Russia): intermittent ash emissions (updated 10 Jul 2014)
More at Volcano Discovery: Volcanic activity worldwide 15 Jul 2014: Etna, Fuego, Bulusan, San Miguel, Stromboli, Santa María