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ash emission from Bocca Nuova this morning
Although tremor dropped significantly yesterday evening, mild strombolian activity from the New SE crater continued throughout the night. This morning, new ash emissions from the Bocca Nuova occurred again. Whether this announces a new phase of (different) activity will have to be seen...
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Eruption column and pyroclastic flow over water at Sangeang Api yesterday (picture: Sofyan Efendi)
Eruptions continue at the volcano after yesterday's major explosion. Dense ash plumes rising from the summit crater can be seen on this morning's satellite images, and a MODIS hot spot is visible on the latest satellite data, suggesting fresh magma continues to arrive at the volcano's summit crater.
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Today's eruption column at Sangeang Api (photo: @Bambang_Bimawan / Twitter)
: A major explosive eruption occurred at the remote volcano this morning at around 08:30 UTC. A subplinian eruption column quickly rose to an estimated 50-65,000 ft (15-20 km) altitude and drifted several hundred km to the east and southeast.
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SO2 plume over Central America (NOAA)
The volcano could be becoming more active with increased degassing. An elevated SO2 concentration in the atmosphere above and near the volcano was visible on satellite data yesterday. Seismic activity appears to be elevated.
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Seismic activity at Turrialba volcano yesterday (VTUC station, OVSICORI)
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Ash explosion at Reventador today (IGPEN webcam)
A moderate explosion at the volcano produced an ash plume that rose to flight level 210 (21,000 ft / 6.5 km altitude), a pilot reported.
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Today's eruption column at Sangeang Api (photo: @Bambang_Bimawan / Twitter)
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Seismic signal at Fuego volcano (FG3 station, INSIVUMEH)
Activity has decreased a bit. Strombolian explosions produced incandescent ejections to up to about 100 m and ash plumes rose to approx. 500 m.
Fri, 30 May 2014, 10:03Seismic activity associated with rock fracturing processes under the volcano showed a slight increase during the past week. The earthquakes occurred mainly under the Paletará valley, approximately 12 km northeast of the volcano at depths between 6 and 10 km, and had local magnitudes between .3 and 2.2 on the Richter scale.
Fri, 30 May 2014, 09:58
Activity at the volcano is currently low.
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Fri, 30 May 2014, 09:55Seismic unrest continues at the volcano, still on alert status Yellow, with little variation over the past months. The Pasto volcano observatory reported a 50% increase in earthquakes during the past week.
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Fri, 30 May 2014, 09:49
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Tremor amplitude at Chaparrastique volcano over the past weeks (MARN)
The amplitude of internal vibration (tremor) at Chaparrastique volcano has suddenly dropped during the past 24 hours indicating that the volcanic system remains unstable, MARN informs in its latest special bulletin. Gas emissions remain elevated.
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Fri, 30 May 2014, 09:42Unrest at the volcano continues in the form of earthquakes under the Chiles-Cerro Negro volcanic massif. During the past week, the monitoring network recorded around 6500 quakes, mostly located less than 4 km SW from the summit at depths ranging between 1 and 8 km and with magnitudes of up to 4.0 on the Richter scale.
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Fri, 30 May 2014, 09:06
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Lahar in the Tambor river yesterday (image: @ConredGuatemala / twitter)
Ongoing rainfall has been causing a number of mud flows (lahars) in the rivers draining from Santiaguito, including Samala, San Isidro and Tambor.
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Fri, 30 May 2014, 08:46USGS reports that "low-level unrest continued at Pagan Volcano throughout the past week. Seismic activity remains above background. A vapor plume was visible in web camera and satellite images.
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Thu, 29 May 2014, 14:32
Thu, 29 May 2014, 10:50
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Shiveluch volcano today (KVERT webcam)
: The volcano produced a steam and ash plume during today that rose to estimated 20,000 ft (6 km) altitude and drifted east.
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Thu, 29 May 2014, 10:49
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Ash explosion at Ubinas volcano this morning
Activity continues to show an overall decreasing trend. A small explosion occurred this morning at the volcano, producing a dark ash plume that rose several hundred meters.
Thu, 29 May 2014, 10:10
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Current seismic signal at Reventador (CONE station, IGPEN)
Weak to moderate effusive and explosive activity continues at the volcano. Cloud cover prevents direct observations most of the time, but the seismic signal shows tremor and explosion signals. A thermal hot spot indicates that lava continues to build up at the summit lava dome.
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MODIS hot spot at Reventador (MODVOLC, Univ. Hawaii)
Thu, 29 May 2014, 10:07
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Shiveluch volcano today (KVERT webcam)
The volcano produced a steam and ash plume during today that rose to estimated 20,000 ft (6 km) altitude and drifted east.
Thu, 29 May 2014, 10:02Activity continues to be elevated at the volcano. An ash plume at estimated 10,000 ft (3 km) altitude extended 35 nautical miles to the west this morning.
Thu, 29 May 2014, 10:00
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Small ash emission at Popocatépetl yesterday
The number of steam-gas and sometimes ash emissions has increased a bit to approx 8 per hour. No other significant changes occurred at the volcano.
Thu, 29 May 2014, 09:16The new lava flow on the eastern flank of the Caliente dome continues to advance slowly and produce avalanches. Small explosions occurred, generating ash plumes up to 700 m high. Rainfalls caused a medium-sized lahar in the Nima I river yesterday at dawn.
Thu, 29 May 2014, 09:14
The lava flow has disappeared and explosive activity in turn increased. The observatory reported ash plumes up to 600 m high and drifting SW to 8 km distance. Shock waves accompanied the stronger explosions. Rainfalls triggered a lahar in the Las Lajas river canyon.
Wed, 28 May 2014, 06:00Observatorio Vulcanológico del INGEMMET (OVI) reported that during 28-29 May ash emissions at Ubinas continued; gas-and-ash plumes rose .6-2.5 km above the crater and drifted ESE. Ashfall was reported in various towns downwind of the plumes, including Querapi (4 km S), Ubinas (6.5 km SSE), Escacha, Chojata, San Miguel, and Tonohaya. The Buenos Aires VAAC reported that seismicity fluctuated during 2-3 June.
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Wed, 28 May 2014, 06:00
AVO reported that, although cloud cover frequently obscured views of Shishaldin during 28 May-3 June, elevated surface temperatures at the summit were detected in satellite images, and minor steam emissions were observed in webcam images. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
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Wed, 28 May 2014, 06:00KVERT reported that during 23-30 May lava-dome extrusion onto Shiveluch's SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. An explosion on 26 May generated an ash plume that rose as high as 10 km (32,800 ft) a.s.l. and drifted 800 km SSE.
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Wed, 28 May 2014, 06:00
PVMBG reported that during 16-22 May seismicity at Merapi fluctuated at normal levels and deformation measurements showed no significant changes. Solfatara plumes rose 300 m and drifted W on 27 May. The Alert Level remained at 1 (on a scale of 1-4) on 23 May.
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Wed, 28 May 2014, 06:00During 28 May-3 June HVO reported that the circulating lava lake occasionally rose and fell in the deep pit within Kilauea's Halema'uma'u Crater. Gas emissions remained elevated. The plume from the vent continued to deposit variable amounts of ash, spatter, and Pele's hair onto nearby areas; smaller particles may have been dropped several kilometers away.
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