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Volcanic activity worldwide 18 Oct 2013: Klyuchevskoy, Shiveluch, Santa María / Santiaguito, Pacaya...

Friday Oct 18, 2013 13:42 PM |

Ash column rising from Klyuchevskoy volcano this morning
Ash column rising from Klyuchevskoy volcano this morning
Ash explosion from SHiveluch this morning (KVERT webcam)
Ash explosion from SHiveluch this morning (KVERT webcam)
Crater glow from Popocatépel this morning
Crater glow from Popocatépel this morning
Klyuchevskoy (Kamchatka): After perhaps a short decrease in activity or more likely, simply the absence of direct observations due to bad weather, the volcano continues to erupt violently with lava fountains from the summit and lava flows on the flank:

... [read more]

Shiveluch (Kamchatka): As if it was jealous of Klyuchevskoy, the other volcano currently in violent eruption, Shiveluch has increased its activity recently. Dome growth has gained speed again, producing more frequent avalanches as well as explosions. Several explosions occurred during the past 24 hours sending ash plumes to 20-23,000 ft (6-7 km) altitude and drifting east.
A large SO2 plume, indicator of the arrival of fresh magma, can be seen on NOAA satellite data as well.

Semeru (East Java, Indonesia): A pilot observed a small ash eruption this morning. The volcano had recently been very calm, but this could be a sign it is getting more active again.

Dukono (Halmahera): Elevated explosive activity (strombolian to vulcanian type) continues. An explosion this morning produced an ash plume rising to 7,000 ft altitude.

Veniaminof (Alaska Peninsula, USA): AVO has lowered the alert level to yellow, as it appears that no new eruptive activity has occurred during the past days. The eruption is not considered over yet, but might be simply pausing and could resume any time (such as the volcano did before).

Popocatépetl (Central Mexico): Following a small increase in the frequency of small explosive emissions during the previous days, activity has now decreased again to averages of less than 1 emission per hour. At night, crater glow remains visible.

Santa María / Santiaguito (Guatemala): The volcano is in its most typical state of activity. After a few days with less (recorded) activity, the volcano's lava dome has again produced a number of small to moderate explosions with ash plumes rising up to about 700 m yesterday. Glow was observed at the eastern rim of the Caliente dome, which suggests that slow lava extrusion has resumed there as well.

Pacaya (Guatemala): Strombolian activity continues at low to moderate levels with little variations over the past days. Explosions with low ash content eject incandescent lava bombs to up to about 50 m above the rim of Mackenney crater.

Fuego (Guatemala): Activity has decreased and shifted back to be mainly mildly explosive. INSIVUMEH reported a few explosions with ash plumes of about 300 m height yesterday. The lava effusion has decreased. The lava flow was still active yesterday morning, but only 150 m long.

Volcano Activity Summary for 18 Oct 2013:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 16 Sep 2013)
Bagana (Bougainville Island, Papua New Guinea): ash explosions (updated 3 Oct 2013)
Barren Island (Indian Ocean): new eruption in mid October 2013 (updated 17 Oct 2013)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 10 Oct 2013)
Chirinkotan (Northern Kuriles): unspecified activity - possibly lava flows (updated 2 Sep 2013)
Cleveland (Aleutian Islands, Alaska): continuous small eruptions (updated 6 May 2013)
Colima (Western Mexico): lava flow on upper eastern flank (updated 19 Jul 2013)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 18 Oct 2013)
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): lava flow on upper southern flank, small to moderate explosions (updated 18 Oct 2013)
Jebel Zubair (Red Sea): submarine eruption started 28 Sep 2013 (updated 17 Oct 2013)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 13 Oct 2013)
Kilauea (Hawai'i): lava lakes in Halemau'uma'u and Pu'u 'O'o, lava flows on coastal flat and weakly active ocean entries (updated 13 Aug 2013)
Kizimen (Kamchatka): growing lava dome and incandescent rock avalanches (updated 15 Oct 2013)
Klyuchevskoy (Kamchatka): strombolian activity / lava fountains in summit crater, lava flows, flank eruption, strong ash emissions (updated 18 Oct 2013)
Marapi (Western Sumatra, Indonesia): occasional weak explosions (updated 14 Aug 2013)
Nyiragongo (DRCongo): active lava lake in summit crater (updated 12 Jun 2013)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Pacaya (Guatemala): strombolian activity and lava flow (updated 18 Oct 2013)
Paluweh (off Flores Island, Indonesia): active growing lava dome (updated 12 Aug 2013)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): explosions and ash emissions (updated 1 Oct 2013)
Reventador (Ecuador): ash explosions, occasional pyroclastic flows (updated 17 Oct 2013)
Sakurajima (Kyushu, Japan): constant ash emissions and strong explosions (updated 15 Oct 2013)
Santa María / Santiaguito (Guatemala): Santiaguito volcano (Guatemala): lava flow on south flank of dome becomes more active (updated 18 Oct 2013)
Semeru (East Java, Indonesia): growing lava dome, ash venting and small to moderate explosions (updated 18 Oct 2013)
Shiveluch (Kamchatka): slow dome growth, occasional explosions and pyroclastic flows (updated 18 Oct 2013)
Stromboli (Eolian Islands, Italy): continuing lava overflows (updated 10 Oct 2013)
Suwanose-jima (Ryukyu Islands): Mt Ontake volcano of Suwanose-jima Island, Japan (updated 12 Sep 2013)
Telica (Nicaragua): normal (low) seismic activity (updated 26 Sep 2013)
Tungurahua (Ecuador): strombolian activity (updated 17 Oct 2013)
Ulawun (New Britain, Papua New Guinea): steaming, degassing (updated 1 Oct 2013)
Yasur (Tanna Island, Vanuatu): strong strombolian activity (level 3), crater currently closed (updated 10 Sep 2013)

Eruption warning / minor activity:

Bezymianny (Central Kamchatka Depression): slow lava flow extrusion from dome (updated 13 Oct 2013)
Chirpoi (Kurile Islands, Russia): hot spot visible on satellite imagery (updated 14 Oct 2013)
Dieng (Central Java): increased degassing (updated 28 Mar 2013)
Etna (Sicily, Italy): sporadic ash emissions from New SE crater (updated 10 Oct 2013)
Heard (Australia, Southern Indian Ocean): likely lava lake in summit crater (updated 3 Oct 2013)
Ibu (Halmahera, Indonesia): growing lava dome, seismic unrest (updated 9 Jun 2013)
Iliwerung (Lesser Sunda Islands): possible submarine eruption from Mt Hobal on 20 August (updated 20 Aug 2013)
Karangetang (Siau Island, Sangihe Islands, Indonesia): lava extrusion at summit crater, strombolian activity, glowing avalanches (updated 4 Sep 2013)
Kerinci (Sumatra): occasional ash explosions (updated 5 Jun 2013)
Ketoi (Kurile Islands, Russia)
Kirishima (Kyushu): degassing, slightly increased seismic activity (updated 30 Jul 2012)
Langila (New Britain, Papua New Guinea): occasional ash explosions (updated 11 Feb 2013)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 24 Sep 2013)
Manam (Papua New Guinea): occasional explosions (updated 12 Sep 2013)
Merapi (Central Java): moderate gas and ash plume on 22 july (updated 3 Oct 2013)
Nevado del Ruiz (Colombia): seismic unrest (updated 7 Oct 2013)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Poas (Costa Rica): occasional small phreatic explosions from lake (updated 22 Aug 2013)
Popocatépetl (Central Mexico): steam/gas/ash emissions (updated 18 Oct 2013)
Raung (East Java): strombolian activity in summit crater (updated 5 Aug 2013)
Tangkubanparahu (West Java): occasional phreatic explosions (updated 15 Oct 2013)
Turrialba (Costa Rica): ash venting, strong degassing (updated 24 Jul 2013)
White Island (New Zealand): strong degassing, volcanic tremor (updated 13 Oct 2013)

Previous news
Ash explosion at Reventador volcano this morning
Thursday, Oct 17, 2013
Klyuchevskoy (Kamchatka): VAAC Anchorage sent out a message shortly before midnight (UTC) that the "eruption has ended" based on the absence of ash emissions from satellite imagery and pilot observations. This followed a particularly strong explosive phase that apparently occurred last night, when seismic data suggested strong emissions and an ash plume rose to possibly 33,000 ft (10 km) altitude. Webcam images from last night showed strong glow from lava flows and summit activity, but today the volcano has been hidden in clouds and no direct views have been possible so far. ... [more]
Klyuchevskoy volcano this morning (KVERT webcam)
Wednesday, Oct 16, 2013
Klyuchevskoy (Kamchatka): Strong eruptive activity continues. VAAC Tokyo reports an ash plume rising to estimated 33,000 ft (10 km) altitude, i.e. about 5 km tall above the volcano, and drifting SW. ... [more]
Klyuchevskoy volcano half an hour ago (KVERT webcam)
Tuesday, Oct 15, 2013
Klyuchevskoy (Kamchatka): KVERT reported a small decrease in activity, although it seems during the past hours (after the report) to have increased again (see video below). The activity in any case can be considered high. An ash plume rises to up to 26,200 ft (8 km) a.s.l. and extends to the east-north-east of the volcano. ... [more]

Monday, Oct 14, 2013
Reykjanes (Reykjanes peninsula (SW Iceland)): (13 Oct) A shallow (10 km) magnitude 4.8 earthquake with many pre- and aftershocks (or a seismic swarm) occurred this morning (Sun) at 07:34 UTC at the SW tip of the Reykjanes peninsula, on the SW active rift zone. The swarm of earthquakes included several quakes of magnitude 3 and higher. The strongest earthquake was widely felt in SE Iceland. ... [more]
Eruption from Klyuchevskoy volcano, Kamchatka (KVERT webcam)
Sunday, Oct 13, 2013
Gorely (Southern Kamchatka): No changes in activity (strong degassing, moderate seismic activity) have occurred. ... [more]

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