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Volcanic activity worldwide 18 Aug 2015: Santiaguito volcano, Pacaya, Fuego, Karymsky, Colima, Popoc...

Tuesday Aug 18, 2015 13:59 PM |

Thermal signal from Karangetang volcano (MIROVA)
Thermal signal from Karangetang volcano (MIROVA)
Eruption column about 2 km high from an explosion at Colima today
Eruption column about 2 km high from an explosion at Colima today
Glow from Popocatépetl at night during a phase of more vigorous degassing
Glow from Popocatépetl at night during a phase of more vigorous degassing
Eruption at Turrialba volcano on 15 Aug
Eruption at Turrialba volcano on 15 Aug
Eruption from Cotopaxi this morning (image: juan jose espinosa p / twitter)
Eruption from Cotopaxi this morning (image: juan jose espinosa p / twitter)
Tupungatito volcano (image:
Tupungatito volcano (image:
Karymsky (Kamchatka): The volcano had an explosion this morning that produced an ash plume that rose to 15,000 ft and drifted SE.

Sakurajima (Kyushu, Japan): Activity has actually decreased and been relatively low at the volcano during the past days. However, the risk of a major eruption remains according to the Japan Meteorological Agency who maintains alert level 4 (preparation for evacuation).

Karangetang (Siau Island, Sangihe Islands, Indonesia): Thermal signals from the volcano have been increasing over the past days, suggesting that the lava output at the summit crater has increased. This could again again to dangerous pyroclastic flows if the lava dome or lava flows become unstable on the steep upper flanks of the volcano. Such flows can easily reach inhabited areas.
During the past months (at least since May) the volcano has been constantly active with a weakly alimented lava flow on the upper southern flank, which has been generating frequent incandescent rock falls. It decreased during July, but a new phase of more violent activity might be in the making now and could make new evacuations necessary. Alert level of the volcano remains at 3 (out of 4).

Raung (East Java): It seems that at least some activity has resumed again. Several observers reported a light ash plume rising from the volcano and drifting SW.

Dukono (Halmahera): Ash emissions from the volcano continue to be intense. This morning, an ash plume extended 50 km ENE.

Colima (Western Mexico): Explosive activity continues with sometimes relatively strong eruptions every few hours.

Popocatépetl (Central Mexico): Activity at the volcano, relatively low at the moment, has remained more or less unchanged. Lava is slowly being extruded in the inner summit crater and occasionally produces small explosions and less vigorous degassing events ("exhalations").
CENAPRED reported yesterday: "In the last 24 hours the seismic records of the survillance system of Popocatepetl volcano registered 9 very-low-intensity exhalations. Through mounted cameras on the volcano, the cloudy conditions not allow to observe the volcano continuously, and it was noticed that some of these were along with emissions of steam and gas.
... [read more]

Santiaguito (Guatemala): Activity at the Caliente lava dome remains essentially unchanged. Some explosions produced ash plumes of up to 500 m height and the eastern blocky lava flow remains weakly active.

Pacaya (Guatemala): Weak strombolian activity continues inside the Mackenney crater and produces small plumes of gas and light ash. Glow is visible at night.

Fuego (Guatemala): Activity has decreased during the past days. INSIVUMEH reported only few and relatively weak explosions occurred during yesterday.

Turrialba (Costa Rica): After 3 months of relative quiet, a small eruption occurred at the volcano on Saturday (15 Aug). At 01:47, an explosion of gas and ash generated a plume that rose 500 m.
The activiy was preceded by more than five hours of sustained volcanic tremor and increased seismic activity since early on 14 Aug.

Cotopaxi (Ecuador): During the night and this morning, some relatively small explosions occurred at the volcano, producing plumes of up to 700 m height.

Tupungatito (Central Chile and Argentina): A volcanic-tectonic earthquake of magnitude 3.2 Richter occurred under the volcano yesterday. The epicenter was at 8.2 km depth 25 kilometers northwest of the main crater. This might announce a period of unrest at the volcano.
SERNAGEOMIN keeps alert level at "green", but with "special attention", according to a newspaper article.
Tupungatito, the northernmost historically active volcano of the central Chilean Andes, is located on the Chile/Argentina border 99 km east of Santiago capital. It is one of the country's more active volcanoes. Since 1829, frequent small explosive eruptions have been recorded, last in 1986.
Previous news

Monday, Aug 17, 2015
Raung (East Java): With a small group we climbed Raung during 14-15 August 2015. We might have witnessed the end of the large 2015 summit eruption, which during June-early August produced large lava flows, lava fountains and significant ash plumes. ... [more]
Seismic signal of Sakurajima's SKRB station on 15 Aug (V-NET)
Sunday, Aug 16, 2015
Sakurajima (Kyushu, Japan): Japanese volcanologist monitoring the volcano warned that a larger eruption could occur in the near future. The alert level of the volcano was raised to the second highest, 4 out of 5, meaning that preparations for evacuations of nearby areas (within a few km from the Showa crater) are in progress. ... [more]
Webcam view of Cleveland volcano 11 Aug
Wednesday, Aug 12, 2015
Raung (East Java): (12 Aug) Small ash emissions continue. This morning, a plume of ash approx. 500 m high drifted 15 km to the west of the volcano. ... [more]
Heat signal from Raung volcano (MIROVA)
Tuesday, Aug 11, 2015
Raung (East Java): Activity has decreased at the volcano. During the past days, the ash plume was much lower and only extended several tens of kilometers in southerly directions. ... [more]
Sunday, Aug 09, 2015
Karymsky (Kamchatka): Tokyo VAAC reports continuous ash emissions from the volcano. ... [more]

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