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Volcanic activity worldwide 20 Mar 2015: Colima volcano, Shiveluch, Ruang, Ubinas, Villarrica, Chirp...

Friday Mar 20, 2015 16:19 PM |

Explosion at Colima this morning
Explosion at Colima this morning
Ash venting at Villarrica this afternoon (morning in Chile)
Shiveluch (Kamchatka): A moderate explosion occurred again at the volcano last evening. Based on the seismic signal, KVERT estimated an ash plume to 21,000 ft (6.3 km) altitude was generated.

Chirpoi (Kurile Islands, Russia): A thermal anomaly continues to be visible at the summit of Snow volcano on cloud-free satellite imagery. The Aviation Color Code remains at Yellow.

Manam (Papua New Guinea): Activity at the volcano remains low, with only internal (seismic) unrest detected recently.
The latest Smithsonian / USGS Weekly Volcanic Activity Report from 11-17 March 2015 writes:
"RVO reported that activity at both Manam's Southern Crater and Main Crater was low during 1-18 March although inclement weather made crater observations difficult; no noises were reported. Seismicity had slowly and erratically increased since 28 February, peaked on 13 March and remained at that level through 15 March, and then increased again through 18 March. The seismicity was characterized by small-to-moderate, sub-continuous, and continuous volcanic tremor. Discrete low-frequency earthquakes were also recorded."

Ruang (North Sulawesi & Sangihe Islands): An increase in seismicity starting on 6 March prompted PVMBG to raise the Alert Level to 2 (on a scale of 1-4) on 12 March. No emissions were observed from the volcano. Residents and tourists were warned not to approach the craters within a 1.5-km radius.

Shishaldin (United States, Aleutian Islands): Seismicity at the volcano continues to be above background, and according to AVO, "low-level activity", i.e. weak strombolian activity for example, could be occurring at the summit crater. Webcam imagery show only minor steaming.
Aviation Color Code remains at Orange and the Volcano Alert Level remained at Watch.

Colima (Western Mexico): Intermittent explosions and ash emissions continue, but at lower frequency and intensity as during the previous weeks.
On 12 March, ash plumes rose to altitudes of 6.1-6.7 km (20,000-22,000 ft) a.s.l. and drifted E, ESE, and SE.

Ubinas (Peru): The Instituto Geofísico del Perú (IGP) and Observatorio Volcanológico del Sur (OVS) reported sporadic ash emissions on 17 March.
During 10 February-17 March seismicity at Ubinas was generally low, although a hybrid event was detected on 11 March.
Two main sources of seismicity were located 1 km W of the crater at depths of 1-3 km and 2 km NW at depths of 1-5 km. Water-vapor emissions rose as high as 1.5 km above the crater. Sporadic ash emissions were observed on 17 March. (from: Smithsonian / USGS Weekly Volcanic Activity Report 11-17 March 2015)

Villarrica (Central Chile): Activity has continued to slowly increase overall during the past days, and volcanic alert level was raised to orange by SERNAGEOMIN on 18 March.
Over the past 48 hours, pulsating, periodic emissions of gas and fine ash have occurred accompanied by continuous low to moderate volcanic tremor. According to the Chilean volcanologists monitoring the situation, the volcano is in a state of a semi-open conduit and the current mild activity could rapidly evolve (and with little warning) into another much more violent phase such as the paroxysm on 3 March.

Volcano Activity Summary for 20 Mar 2015:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
Aso (Kyushu): intense strombolian activity from main vent in Nakadake crater (updated 16 Mar 2015)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 4 Nov 2014)
Colima (Western Mexico): Irregular small to moderately large explosions (updated 20 Mar 2015)
Copahue (Chile/Argentina): ash venting (updated 4 Dec 2014)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 15 Mar 2015)
Erebus (Antarctica): active lava lake in summit crater (updated 8 Dec 2014)
Erta Ale (Ethiopia): active lava lake in northern pit crater, active hornito with intermittend flow in southern crater (updated 11 Jan 2013)
Fuego (Guatemala): intermittent strombolian explosions (updated 13 Mar 2015)
Ibu (Halmahera, Indonesia): stromolian and phreatomagmatic explosions (updated 14 Nov 2014)
Karangetang (Siau Island, Sangihe Islands, Indonesia): growing lava dome, incandescent avalanches (updated 5 Feb 2015)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 4 Mar 2015)
Kilauea (Hawai'i): new lava flow from vents on NE flank of Pu'u 'O'o (updated 13 Aug 2013)
Nishino-shima (Volcano Islands, Japan): growing island (updated 19 Jan 2015)
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)
Poas (Costa Rica): phreatic explosions (updated 14 Oct 2014)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 4 Mar 2015)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): lava fountains, ash emissions from Tavurvur cone (updated 12 Sep 2014)
Raung (East Java): Large Strombolian explosions (updated 18 Mar 2015)
Reventador (Ecuador): intermittent weak to moderate explosions, occasional lava flows (updated 16 Mar 2015)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 18 Mar 2015)
Sangay (Ecuador): likely strombolian eruptions at summit crater (updated 13 Mar 2015)
Santiaguito (Guatemala): small explosions from the Caliente dome and active lava flow (updated 3 Feb 2015)
Semeru (East Java, Indonesia): growing lava dome, lava flow, strombolian activity (updated 26 Nov 2014)
Shiveluch (Kamchatka): growing lava dome (updated 20 Mar 2015)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 20 Feb 2015)
Soputan (North Sulawesi, Indonesia): active viscous lava flow, explosions, rockfalls, pyroclastic flows (updated 9 Mar 2015)
Suwanose-jima (Ryukyu Islands): strombolian activity (updated 16 Feb 2015)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)
Zhupanovsky (Kamchatka, Russia): intermittent ash emissions (updated 18 Mar 2015)

Eruption warning / minor activity:

Augustine (Cook Inlet (SW Alaska))
Bagana (Bougainville Island, Papua New Guinea): ash emissions, lava dome growth (updated 21 Jan 2015)
Bezymianny (Central Kamchatka Depression): steaming, weak seismic activity (updated 3 Jul 2014)
Etna (Sicily, Italy): sporadic weak ash emissions from New SE crater (updated 19 Apr 2014)
Heard (Australia, Southern Indian Ocean): possibly lava lake in summit crater (updated 5 Dec 2014)
Kavachi (Solomon Islands): no eruption since 2007 (updated 16 Jun 2014)
Kerinci (Sumatra): seismic unrest (updated 5 Jun 2013)
Kirishima (Kyushu): degassing, alert lowered (updated 25 Oct 2014)
Kliuchevskoi (Kamchatka): degassing, probably mild strombolian activity in summit crater (updated 18 Mar 2015)
Krakatau (Sunda Strait, Indonesia): degassing (updated 31 Mar 2014)
Kuchinoerabu-jima (Ryukyu Islands): explosion on 3 Aug 2014 (updated 5 Dec 2014)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 13 Sep 2014)
Lopevi (Vanuatu): eruption warning (updated 16 Dec 2014)
Manam (Papua New Guinea): seismic unrest (updated 20 Mar 2015)
Mayon (Luzon Island): steaming (updated 18 Dec 2014)
Nevado del Ruiz (Colombia): ash emissions (updated 16 Dec 2014)
Nyamuragira (DRCongo): active lava lake (updated 29 Nov 2014)
Ontake-san (Honshu): steaming, low seismic activity (updated 18 Dec 2014)
Pacaya (Guatemala): ash emissions (updated 7 Feb 2015)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Pavlof (Alaska Peninsula, USA): steaming, elevated seismic activity (updated 22 Dec 2014)
Piton de la Fournaise (La Réunion): new eruption on 4 Feb 2015 (updated 16 Feb 2015)
Rasshua (Central Kuriles)
Rincón de la Vieja (Costa Rica): phreatic explosions from crater lake (updated 21 Sep 2014)
Sacabaya (Northern Chile, Bolivia and Argentina)
San Cristobal (Nicaragua): possible ash emission on 11 April (updated 9 Mar 2015)
San Miguel (El Salvador): elevated seismic activity, pulsating gas emissions (updated 28 Jan 2015)
Shishaldin (United States, Aleutian Islands): mild explosive activity, intermittent more intense phases (updated 20 Mar 2015)
Slamet (Central Java): intense strombolian explosions (updated 12 Jan 2015)
Stromboli (Eolian Islands, Italy): weak strombolian activity at summit vents (updated 13 Mar 2015)
Tungurahua (Ecuador): steaming, sporadic small explosions (updated 4 Mar 2015)
Turrialba (Costa Rica): ash eruptions (updated 16 Mar 2015)
Ubinas (Peru): sporadic ash emissions (updated 20 Mar 2015)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)
Villarrica (Central Chile): pulsating gas and ash emissions (updated 20 Mar 2015)

Previous news
Degassing plume from Klyuchevskoy this morning (KVERT)
Wednesday, Mar 18, 2015
Kliuchevskoi (Kamchatka): (18 Mar) Mild activity is again occurring at the summit vent of the tall stratovolcano. Aviation color code is orange. ... [more]
Explosion at Shiveluch this afternoon (night in Kamchatka)
Monday, Mar 16, 2015
Shiveluch (Kamchatka): An explosion occurred a few hours ago. Webcam images show bright blow from incandescent material ejected. VAAC Tokyo estimates an ash plume was produced that rose to 25,000 ft (7.5 km) altitude. ... [more]
Turrialba volcano today
Sunday, Mar 15, 2015
Dukono (Halmahera): A relatively large ash plume reaching 13,000 ft (4.2) km altitude was observed yesterday extending 50 km ENE (Tokyo VAAC). ... [more]
Eruption of Colima around 1 am on 12 March (photo: Hernando Rivera)
Friday, Mar 13, 2015
Stromboli (Eolian Islands, Italy): Access to the summit area (accompanied by certified guides) has been re-opened, which means excursions to the Pizzo can again run as normal. ... [more]

Thursday, Mar 12, 2015
Santiaguito (Guatemala): Join us on an exciting volcano expedition to visit 3 active volcanoes: Pacaya, Fuego, Santiaguito. The tour over the Holidays 2015-16 can now be guaranteed! ... [more]

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