Volcanic Activity Worldwide: Tuesday May 17, 2016

Sinabung (Sumatra, Indonesia): Two small to moderately sized pyroclastic flows occurred this morning at the volcano.
The larger one at 06:16 local time (image) produced a pyroclastic flow that traveled 2700 m on the SE side and a co-ignimbrite ash plume that rose 2500 m into the sky.

Santiaguito (Guatemala): The activity at the Caliente lava dome remains very elevated: a series of 3 powerful explosions occurred this morning (around 07:45 local time), yesterday evening (17:45) and Saturday morning.
The eruptions produced ash plumes that rose 3-4 km above the dome and multiple pyroclastic flows that traveled up to 2 m length mainly on its southern and eastern sides. Moderate to heavy ash fall occurred in areas south-west of the dome complex, including the towns and villages of Nuevo Palmar, San Felipe Retalhuleu, Aldea Loma Linda, San Marcos Palajunoj El Patrocinio and others.
According to INSIVUMEH, the explosion sounds could be heard up to 30 km away and ballistic ejecta (blocks and volcanic bombs) landed in up to 3 km distance. The current phase of activity has been the highest recorded at the volcano since at least 2 years.

Turrialba (Costa Rica): A new phase of ash emissions seems to be in progress at the volcano (which itself has been in clouds, preventing direct observations).
Starting 11:58 local time, an increase of tremor was noted and later on, ash fall has been noted in nearby downwind areas (to the NE).

Currently erupting:

Alaid (Northern Kuriles): intense thermal signal from summit crater, strong degassing (updated 3 May 2016)
Ambrym (Vanuatu): active lava lakes in several craters (updated 13 May 2016)
Aso (central Kyushu, Japan): degassing, sporadic steam / ash explosions (updated 8 Mar 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 4 May 2016)
Chikurachki (Paramushir Island): new eruption since end of March 2016 (updated 31 Mar 2016)
Colima (Western Mexico): sporadic small explosions (updated 5 May 2016)
Copahue (Chile/Argentina): seismic unrest, occasional ash venting (updated 22 Mar 2016)
Dukono (Halmahera): mild strombolian activity, continuous intense ash emissions (updated 13 May 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 8 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 emissions (updated 1 May 2016)
Kilauea (Hawai’i): new lava flow from vents on NE flank of Pu’u ‘O’o (updated 28 Apr 2015)
Kliuchevskoi (Kamchatka): mild strombolian activity in summit crater (updated 27 Apr 2016)
Langila (New Britain, Papua New Guinea): ash emissions (updated 13 May 2016)
Masaya (Nicaragua): active lava lake ini summit crater (updated 6 May 2016)
Momotombo (Nicaragua): intermittent vulcanian explosions (updated 29 Mar 2016)
Nyiragongo (DRCongo): new vent on crater floor (updated 8 Mar 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 20 Apr 2016)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): lava fountains, ash emissions from Tavurvur cone (updated 12 Sep 2014)
Reventador (Ecuador): lava flow on SW flank (updated 24 Feb 2016)
Sakurajima (Kyushu, Japan): sporadic vulcanian explosions from Minamidake and Showa crater (updated 13 May 2016)
Sangay (Ecuador): mild strombolian activity in summit crater (updated 6 May 2016)
Santiaguito (Guatemala): increased effusive / explosive activity from Caliente dome (updated 8 May 2016)
Semeru (East Java, Indonesia): growing lava dome, lava flow, strombolian activity (updated 14 Feb 2016)
Shiveluch (Kamchatka): growing lava dome (updated 9 May 2016)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 13 May 2016)
Stromboli (Eolian Islands, Italy): weak, intermittent strombolian explosions (updated 13 May 2016)
Suwanose-jima (Ryukyu Islands): strombolian explosions in Ontake crater (updated 20 Apr 2016)
Tungurahua (Ecuador): large and frequent explosions, ash columns rising several km (updated 9 Mar 2016)
Turrialba (Costa Rica): steaming, sporadic ash emissions (updated 13 May 2016)
Ubinas (Peru): sporadic vulcanian explosions (updated 16 Jan 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)
Zhupanovsky (Kamchatka, Russia): steaming / degassing (updated 31 Mar 2016)

Eruption warning / minor activity:

Awu (North Sulawesi & Sangihe Islands): seismic unrest, eruption warning (updated 13 May 2016)
Bagana (Bougainville Island, Papua New Guinea): intermittent mild ash emissions (updated 8 May 2016)
Barren Island (Indian Ocean): weak thermal hot spot (updated 3 Mar 2016)
Bezymianny (Central Kamchatka Depression): steaming, weak seismic activity (updated 3 Jul 2014)
Bromo (East Java, Indonesia): intermittent weak ash emissions (updated 6 May 2016)
Bulusan (Luzon Island, Philippines): occasional sporadic explosions (updated 23 Feb 2016)
Canlaon (Central Philippines): occasional sporadic explosions (updated 30 Mar 2016)
Cerro Negro (Nicaragua): increased earthquake activity (updated 16 Feb 2016)
Chirinkotan (Northern Kuriles, Russia): sporadic ash emissions (updated 28 Jul 2015)
Chirpoi (Kurile Islands, Russia): thermal hot spot visible on satellite imagery (updated 14 Apr 2016)
Cleveland (Aleutian Islands, Alaska): sporadic explosions (updated 6 May 2016)
Cotopaxi (Ecuador): vulcanian explosions (updated 16 Aug 2015)
Etna (Sicily, Italy): weak, dilute ash emissions from NE crater (updated 19 Apr 2014)
Heard (Australia, Southern Indian Ocean): strombolian activity, lava flow from Mawson Peak summit crater (updated 1 Feb 2016)
Karangetang (Siau Island, Sangihe Islands, Indonesia): rockfalls, glowing lava dome (updated 13 Jan 2016)
Kavachi (Solomon Islands): no eruption since 2007 (updated 16 Jun 2014)
Kick ’em Jenny (West Indies, Grenada): volcanic unrest, eruption warning (updated 24 Jul 2015)
Krakatau (Sunda Strait, Indonesia): steaming, seismic unrest (updated 15 Nov 2015)
Kuchinoerabu-jima (Ryukyu Islands): large explosive eruption on 29 May 2015 (updated 27 Mar 2015)
Lascar (Northern Chile): sudden explosion on 30 Oct 2015 (updated 31 Oct 2015)
Lokon-Empung (North Sulawesi, Indonesia): seismic unrest, eruption warning (updated 9 Mar 2016)
Lopevi (Vanuatu): eruption warning (updated 16 Dec 2014)
MacDonald (Austral Islands, ): steaming observed (updated 6 Feb 2016)
Manam (Papua New Guinea): large explosion on 31 July 2015 (updated 4 Mar 2016)
Mayon (Luzon Island, Philippines): steaming (updated 18 Dec 2014)
Merapi (Central Java, Indonesia): sporadic phreatic explosions (updated 21 Aug 2015)
Michael (United Kingdom, South Sandwich Is): unspecified activity detected as hot spot on satellite data (updated 3 Oct 2015)
Nevado del Ruiz (Colombia): intermittent explosions, steaming, ash venting (updated 3 May 2016)
Nevados de Chillán (Central Chile): sporadic ash emissions, seismic unrest (updated 9 May 2016)
Niigata-Yake-yama (Honshu): sporadic explosions, seismic unrest (updated 8 May 2016)
Nyamuragira (DRCongo): lava lake in summit crater disappeared in early April 2016 (updated 16 Apr 2016)
Ontake-san (Honshu): steaming, low seismic activity (updated 18 Dec 2014)
Papandayan (West Java): steaming (updated 6 May 2013)
Poas (Costa Rica): phreatic explosions (updated 14 Oct 2014)
Rasshua (Central Kuriles)
Raung (East Java): intra-caldera eruption with lava flow and strombolian activity (updated 27 Aug 2015)
Rincón de la Vieja (Costa Rica): sproadic hydrothermal explosions (updated 3 May 2016)
Sabancaya (Peru): steaming, elevated seismic activity (updated 11 Oct 2015)
Sacabaya (Northern Chile, Bolivia and Argentina)
San Cristobal (Nicaragua): intermittent ash explosions (updated 24 Apr 2016)
San Miguel (El Salvador): intermittent ash emissions (updated 15 Jan 2016)
Sangeang Api (Indonesia): weak lava extrusion from summit crater (updated 11 Nov 2015)
Sirung (Pantar Island, Indonesia ): degassing (updated 10 Jul 2015)
Slamet (Central Java): steam emissions (updated 12 Jan 2015)
Telica (Nicaragua): lava glow from crater, degassing, occasional light ash emissions (updated 9 May 2016)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)