Old News 2015, 02 to 06

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++++ BATU TARA – INDONESIA – 2015-06-30 ++++

During 30 June-4 July observers at Batu Tara noted Strombolian eruptions of varying intensity at intervals ranging between 10 and 50 minutes. Three pyroclastic flows traveled as far as 200 m over the sea during a 16-hour period of elevated activity between 2 and 3 July.


++++ HAKONE – JAPAN – 2015-06-30 ++++

JMA reported that on 29 June scientists visiting Hakoneyama observed new fumaroles in a landslide-prone area, appearing after a possible landslide had occurred. Fresh sediment deposits within 2 km were possibly caused by the formation of the fumaroles. Seismicity began increasing at 19:30, and a 5-minute-period of volcanic tremor began at 19:32. At 12:30 on 30 June a small-scale eruption occurred. The Alert Level was raised to 3 (on a 5-level scale).


++++ RAUNG – INDONESIA – 2015-06-29 ++++

Also from mid-June on satellite imagery showed high temp. hot spots on G. Raung. BNPB reported that increased activity on 28 June was characterized by Strombolian activity, roaring, ash plumes that rose 300 m, and a loud thumping sound heard 20 km away at 2000. Incandescence from the crater was clearly visible from the observation post in Banyuwangi. PVMBG raised the Alert Level to 3 (on a scale of 1-4) on 29 June.


++++ CONCEPCION – NICARAGUA – 2015-06-23 ++++

INETER reported that gas explosions continued to be detected at Concepción; by 23 June a total of 2,304 explosions, 320 since 15 June, had been detected by the network since activity increased (date not specified).


++++ BULUSAN – PHILIPPINES – 2015-06-21 ++++

PHIVOLCS reported that the seismic network at Bulusan recorded an explosion-type event that lasted for two minutes on 18 June A phreatic explosion that occurred at 14:55 on 19 June, and lasted for seven minutes, produced a 1.5-km-high grayish ash plume that drifted WSW. A low-level ash cloud on the upper NW flank, possibly from a short pyroclastic flow, was also observed. At 13:15 on 21 June an event which lasted 111 seconds generated a steam-and-ash plume that rose 150 m and drifted E. The Alert Level remained at 1, indicating abnormal conditions and a 4-km radius Permanent Danger Zone (PDZ).


++++ ASAMA – JAPAN – 2015-06-16 ++++

On 16 June 2015 JMA reported that a small-scale eruption from Asama’s summit crater generated ashfall to the NE within 4 km of the crater. Scientists aboard an overflight later that day observed gas venting of blue and white plumes.


++++ SINABUNG – INDONESIA – 2015-06-03 ++++

(PVMBG) RED allert has finally been called for Sinabung. After the previous lava dome collapse in April a new dome has been growing to about twice the size of the last one, fears are now that this could lead to a still more dramatic collapse event.


++++ PACAYA – GUATEMALA – 2015-06-07 ++++

INSIVUMEH reported that during 7-8 June white and blue fumarolic plumes rose above Pacaya’s Mackenney cone. Ash emissions were observed about every 3-4 hours, and the seismic network detected signals indicating a collapse within the crater along with ash emissions.


++++ KUCHINOERABU-JIMA – JAPAN – 2015-05-29 ++++

The volcano which had been on alert level 3 since its last eruption on Aug. 3, 2014 cranked up its powers and did a full on eruption from Mt. Shindake (one volcano of the island’s volcanic complex) causing a level 5 alert and the entire population being evacuated from the island. This was the first time the maximum level was called since the alert system was established in December 2007. Thanks to timely evacuation there were no fatalities.


++++ VOLCAN WOLF – ECUADOR – 2015-05-25 ++++

According to IGEPN, a quite powerful eruption has started in Volcán Wolf, Island of Isabela, Galápagos Islands, with an initial ash plume over 10km high and following lava flows mainly to the NE-SE, reaching the Sea on the eastern shore.
Update June 11: Wolf is still erupting. (Foto de Diego Paredes, click to enlarge). No fatalities ocurred; the island has only very few inhabitants.


++++ TELICA – NICARAGUA – 2015-05-08 ++++

According to INETER, Volcan Telica, 18 km N of the city of Leon, had 7 ash producing explosions and 15 minor ash and gas emissions in the previous 24 hrs. Seismicity remained low, which indicates that the explosions may have been phreatic. Further investigation/field survey will be carried out. On saturday, 09 May, several more ash explosions were visible on the webcam. Also volcan Conception, an island volcano in the Great Lake Nicaragua, is showing increased seismic activity.


++++ BULUSAN – Phillipines – 2015-05-01 ++++

PHIVOLCS: a steam and ash explosion of Bulusan occured Friday which lasted for 5 minutes based on seismic records. Very few volcanic earthquakes were detected during the preceding week. Alert level 0 is maintained but the public are reminded that entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the possibility of sudden and hazardous steam-driven or phreatic eruptions. Also, river valleys pose the threat of lahars/mud flows.


++++ BARREN-ISLAND – India – 2015-04-27 ++++

According to the Darwin VAAC from 27 April, a pilot observed an ash plume from Barren Island that rose to an altitude of 3 km (10,000 ft) a.s.l., though ash was not identified in satellite imagery. However, from MODIS hotspot images it appears that Barren Island has been erupting with lava and/or PFs since mid-March. (…read more)


++++ CALBUCO – Chile – 2015-04-22 ++++

Calbuco

Volcán Calbuco erupted on Wednesday, April 22, 2015, and caused airline flight cancellations and evacuation of the surrounding countryside. An ash plume ~15-20 km high accompanied the first eruption. The following night, a second, longer lasting eruption ocurred and a flow of lava was reported into Chapo Lake. So far, no casualties have been reported. Read more…


++++ Nevado del Ruiz – Colombia – 2015-04-19 ++++

In the night of 19/20 April 2015 SGC, OVS de Manizales reported increased activity of Nevado del Ruiz (Colombia) with high tremors and light explosions producing steam and ash emissions.


++++ UBINAS – Peru – 2015-04-08 ++++
IGP reported several explosions at Ubinas in the early morning of April 8 with the highest ash column reaching 2.5 km. As of today, April 9, the eruption is still ongoing with strong harmonic tremors. Villages in the vicinity of the volcano have been evacuated, while in the wider area protection measures for people and water resources have been taken. The eruption is still classified as a small event.


++++ BATU TARA – Indonesia – 2015-04-07 ++++

Ash advisory from VAAC Darwin at 12:11 PM states: Eruption details: PIREP OBS VA plume at 0728Z to FL100 drifting NW; RMK: PIREP indicates recent ash in vicinity of Batu Tara. Precise ash boundary and movement not able to be determined from available information and SAT imagery. A more detailed advisory will be issued on receipt of more information.


++++ BAGANA – P.N.G. – 2015-03-30 ++++
Although no status report on the volcanic activity seems to be available, the aviation color code for Bagana is orange and ash emissions have been reported for the last three or four days by VAAC Darwin.


++++ SINARKA – Russia – 2015-03-21 ++++
SVERT reported that satellite images showed steam-and-gas emissions from Sinarka on 16 March and a weak thermal anomaly on 21 March.


++++ CHIRINCOTAN – Russia – 2015-03-20 ++++
SVERT reported that during 19-21 March a thermal anomaly over Chirinkotan was detected in satellite images. The Aviation Color Code was raised to Yellow on 20 March.


++++ MOYORODAKE [MEDVEZHIA] – Japan/Russia – 2015-03-18 ++++
SVERT reported that satellite images showed a weak thermal anomaly over Kudryavy, a stratovolcano of the Medvezhia volcanic complex, on 18 March.


++++ TURRIALBA – Costa Rica – 2015-03-12/13 ++++
OVSICORI reports renewed activity of Costa Rica’s volcano Turrialba on Thursday/Friday. Several Turrieruptions, stronger than those of the last weeks, have dispersed ash as far as to the capital San Jose, with a plume up to 1.5 km high. Analysis of collected ash samples showed almost all “old” material, rock blasted out of the duct, but a very tiny part was apparently fragments of fresh magma, suggesting that new magma could be moving in. One of the stronger blasts has also taken a new “bite” out of the crater rim.


++++ Ruang – Indonesia – 2015-03-13 ++++
Volcano Ruang in North Sulawesi (not to be confused with Raung in East Java) has been raised to alert level two. It showed no visible signs yet, but the number of shallow volcanic earthquakes has risen considerably. Ruang is a small volcano (725 m a.s.l.) that has produced an ash column of 20 km in its last eruption in 2002, together with pyroclastic flows and lahars. Keep an eye on!


++++ SANTIAGUITO – Guatemala – 2015-03-10 ++++
Increased activity of Santiaguito reported: From the Boletín Informativo no. 3879 (CONRED, INSIVUMEH), 10 March 2015 – During the last hours explosions and ash columns were observed in Santiaguito volcano and Fuego. […] Observed in the Santiaguito volcano was a white plume from the lava dome in the crater of Caliente. Several explosions occured, accompanied by plumes of ash 3000 meters above sea level which moved to the S, SW. Fine ash falling on communities in areas close to Santiaguito volcano. The population is reminded to cover containers for food and storing drinking water and to wear protective masks.


++++ LOKON – Indonesia – 2015-03-07 ++++
Jakarta Post (March 9): Mount Lokon in Tomohon, North Sulawesi, has been showing increasing activity since Friday, when the frequency of eruptions was recorded at more than 15 times every six hours. […] “But this time, the activity escalated. We have informed the Tomohon city administration to take the necessary steps and to keep the people away from the danger zone,” Farid said. […] In September last year, the volcano erupted forcing many people to leave the area.


++++ SOPUTAN – Indonesia – 2015-03-07 ++++
Mount Soputan in Southeast Minahasa Regency, North Sulawesi erupted. PVMBG Geological soputanAgency noted at 17:09 pm (18:09 GMT) “High eruption reaches 4,500 meters tilted towards the southeast. Pyroclastic to the west with a sliding distance of approximately 2,500 meters,” said BNPB, Sutopo Purwo Nugroho, via short message, Saturday (03/07/2015). […] Mount Soputan’s status is currently on the alert level 3. Mount Soputan has undergone several eruptions. Sutopo describes the general nature of the eruption as explosive with the activity center at the top. – Mount Soputan is one of the most active volcanoes in Indonesia, however, as the nearest population lives abt. 8 km away it does not pose a great danger during its usual eruptions.


++++ SAN CRISTOBAL – Nicaragua – 2015-03-05 ++++
SINAPRED: Two explosions of gas and ash occurred Thursday afternoon in San Cristóbal Volcano, located in the department of Chinandega. Dr. Guillermo Gonzalez said at a press conference that the first explosion produced a column of volcanic material reached 200 meters, while the second explosion went up to 500 meters. San Cristóbal remains on Yellow Alert. In addition, the INETER is to monitor the phenomenon and performing measurement of gases and other studies to determine the cause of both explosions. Note that the San Cristóbal is the highest volcano in Nicaragua and one of the most active.


++++ SINABUNG – Indonesia – 2015-03-05 ++++
A large eruption occurred again in Sinabung, Karo, North Sumatra, on Thursday (03/05/2015) morning, Sinabungand undermined the lava dome that formed in 19 February eruptions. At least 1.5 million cubic meters of volcanic material, causing ash thrown up to a radius of 10 kilometers and avalanches of hot clouds as far as 4.7 kilometers. PVMBG, Hendra Gunawan said, the lava dome collapsed after power driven eruption of stomach sizable crater. (Google translation)
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++++ SANGAY – Ecuador – 2015-03-02 ++++
(GVP weekly) According to the VAAC, on 27 February IG reported a lava flow and a possible diffuse ash plume that rose to an altitude below 5.5 km (18,000 ft) a.s.l. within 15 km of the summit. On 2 March a local pilot observed an ash plume that rose to an altitude of 7.6 km (25,000 ft) a.s.l. On 3 March an ash plume rose to an estimated altitude of 5.2 km (17,000 ft) a.s.l. and drifted 13 km W.


++++ UBINAS – Peru – 2015-02-26 ++++
Moquegua: […] reported that the eruptive activity of the volcano crater Ubinas increased. He explained, apparently water ingress caused by heavy rains into the magma in the crater of the volcano, could be the cause, as the micro earthquakes increased from 20 to 100 per day, while the fumaroles rose from 700 meters to 900 meters high and ash issue is considerable.


++++ VILLARRICA – Chile – 2015-02-06 ++++
Villarica030315
On 4 February, the south Chilean volcano Villarrica displayed increased seismic activity for the first time
since April 2012, which culminated in the start of small Strombolian eruptions on the 6th and 7th. Activity decreased after that, but still remains above background levels and a YELLOW alert is still maintained.
2 March 2015: Alert level has been raised to ORANGE because of hightened activity.
3 March 2015: Alert level has been raised to RED. A major eruption had occurred during the night ejecting a dense ash plume and lots of lava….
read more…


++++ PITON DE LA FOURNAISE – La Réunion – 2015-02-04 ++++
OVPDLF reported that 180 earthquakes at Piton de la Fournaise were recorded from 04.00 to 09.00 on 201502124 February. A seismic crisis began at 09.10, tremor was recorded at 10.50, and an eruption began at 11.00. … observers noted that a fissure had opened on the south flank, triggering an Alert Level 2-2 and the restriction of access by the public to the summit area. The fissure was 500 m long, starting from an area located 100 m outside and to the west of Bory Crater… read more…


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