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Tremor amplitude and spectrum of White Island during the past 30 days (GeoNet)
Volcanic tremor reflecting fluid movements beneath White Island continues its slowly increasing trend.
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Small explosion during the night 28-29 Dec
The rate of small explosions and steam-ash emissions remains at moderate levels with 1-2 events per hour (39 during 28-29 Dec). Glow remains visible at night.
Sun, 30 Dec 2012, 11:05
The Santiaguito lava dome has been comparably calm with few or no explosive activity reported during the past days.
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Image of Fuego early on 29 Dec 2012 showing the lava flow
Activity has remained unchanged with weak strombolian explosions (11 counted during 28-29 Dec) producing small ash plumes up to about 500 m high, and the continuing lava flow, about 500 m long on the upper southern slope.
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Small explosion during the night 28-29 Dec
The rate of small explosions and steam-ash emissions remains at moderate levels with 1-2 events per hour (39 during 28-29 Dec). Glow remains visible at night.
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Seismic signal from RETU station (IG)
Activity at Tungurahua has picked up again. During 29 Dec, the Instituto Geofísico (IG) reported 30 explosions over 24 hours of small to moderate size, sometimes accompanied by loud sounds and ejection of incandescent material. Ash plumes were reported reaching 25,000 ft (7.5 km) altitude.
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Seismic recording during 29 Dec 2012 (VACR station, OVSICORI)
Some elevated internal activity was observed on 29 Dec, but seismic activity has been calm again today.
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Current seismic signal from CONE station (IG)
Sporadic small explosions and ash emissions continue, but at lower levels than during past months.
Sun, 30 Dec 2012, 10:45
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Current seismic signal (CIMA station)
Small deep (12-15 km depth) earthquakes continue to be registered at the volcano.
Sun, 30 Dec 2012, 10:40
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SO2 plume from Nevado del Ruiz on 29 Dec
An SO2 plume drifting from the volcano shows ongoing intense degassing. INGEOMINAS reported occasional steam and ash venting. Small earthquakes and occasional low-level volcanic tremor pulses can be seen on the seismic recordings.
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Seismic recording on 29 Dec (OLL station, INGEOMINAS)
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Current seismic signal (OLL station, INGEEOMINAS)
Sun, 30 Dec 2012, 10:28
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MODIS hot spots on Heard volcano during the past 7 days (MODIS / Univ. Hawai'i)
A thermal hot spot remains visible at the volcano.
Sun, 30 Dec 2012, 10:25
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MODIS thermal anomaly at Copahue (summarized data from 28-30 Dec)
Visual and seismic activity have decreased at Copahue and no more ash emissions or incandescence have been observed since 29 Dec. It is thought that the small eruption that had started on 22 Dec has ended. It has emplaced a small body of lava (a lava dome) inside the crater which is now cooling, but still visible as a thermal anomaly on MODIS satellite data.
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Sun, 30 Dec 2012, 10:10
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Ash emission on 29 Dec (INGEOMINAS)
Mild ash explosions continue to occur sporadically at the volcano, such as recently seen on 29 Dec. For the month of December, this is the 6th time ash emissions were observed (although more could have occurred and gone unnoticed during times of bad weather). In comparison, there have been 2 emissions observed in November, 12 in October, and 5 in September.
Sun, 30 Dec 2012, 10:03
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Current seismogram at CRIN station (INETER)
Activity has calmed down since 11 am on 28 Dec and not produced any new explosions during the second half of the day, but resumed yesterday with some weak ash emissions. Ineter reports continuing degassing but at lower intensity and also lower seismic activity. It is not clear yet if this marks already the end of the current episode or only a temporary break.
Sat, 29 Dec 2012, 11:05
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Seismic recording from morning of 28 Dec showing the explosion signals
Pacaya volcano is waking up. A series of 3 small explosions occurred yesterday morning and generated small ash plumes rising 500 m. The explosions were probably phreatic, but along with the previous explosions 10 days ago they likely indicate that magma has started to rise within the volcano and might reach the surface soon again. Strombolian and/or lava flow effusion activity, Pacaya's typical activity, could thus resume in a relatively short time.
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Sat, 29 Dec 2012, 11:05The lava flows from the southern fissure continue to be alimented and KVERT reports that tremor is still strong (although much less than 1-2 weeks ago). The plume and visible glow from the eruption are smaller as well but still present.
Fri, 28 Dec 2012, 11:05
Yesterday, KVERT declared the official end of the last eruption of Kizimen that had started in Nov 2011 and set the aviation color code back to green, meaning that no explosive ash emissions are expected for the time being.
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Fri, 28 Dec 2012, 11:05Mild but frequent ash venting continues from San Cristobal and the ash is increasingly impacting the local communities. According to the newspaper El Nuevo Diario, almost 300 people have evacuated their homes voluntarily, only 68 more were evacuated by Civil protection and transferred to relatives or constructed shelters ("albergues"). Currently, there are still about 200 families who refused evacuation despite the insistence of authorities and in some villages even the church, and are now at risk from ash and gas. In addition, Civil Protection has a list of other 400 people to be evacuated if the eruption intensifies.
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Fri, 28 Dec 2012, 10:54
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Thermal webcam image of the crater area (INGV)
Activity remains elevated. A small lava overflow continues to issue from a breach or a new vent at the northern crater terrace rim and descend on the upper Sciara del Fuoco. Explosion signals on the seismic recording are stronger than usual.
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Current seismic signal (INGV)
Fri, 28 Dec 2012, 09:13
Lokon volcano in North Sulawesi has had another explosion yesterday (27th) at 16:50 local time. The ash plume appears to be of considerable height, although Darwin VAAC has not (yet) published a warning.
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Fri, 28 Dec 2012, 09:10
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Current seismic signal from RETU station (IG)
The eruption continues at fluctuating, but generally reduced intensity compared to the previous week, but there are still occasional weak to moderate explosions and near constant steam and ash emissions that produce a column rising up to about 2 km above the crater.
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Fri, 28 Dec 2012, 08:50
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Time and depth of quakes near Mammoth Mountain
Another (weak) earthquake swarm has started yesterday evening at Mammoth Mountain. Most quakes are at about 20 km depth in an area 5 km SW of the mountain.
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Seismic signal from Mammoth Mountain (MRD station, USGS)
Fri, 28 Dec 2012, 08:36
The number of gas, steam and sometimes ash emissions has dropped to only about 1-2 per hour, but otherwise, the volcano's activity remains unchanged.
Fri, 28 Dec 2012, 01:09
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SO2 plume from Copahue volcano on 27 Dec 2012 (NOAA)
New ash emissions occurred today. Ash clouds at 10,000 ft (3 km) altitude extending about 50 km NE along with strong SO2 emissions visible on satellite data.
Thu, 27 Dec 2012, 11:05
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Ash emission from San Cristobal (image: SINAPRED)
The series of small ash explosions starting on 25 Dec at around 20h00 local time continued throughout the night and increased in intensity during the morning of 26 Dec. Activity decreased around noon yesterday, but resumed again in the afternoon with 4 more explosions between 13:25 - 16:11 h local time at intervals of 20-60 minutes, accompanied by strong pulses of tremor.
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Thu, 27 Dec 2012, 11:05
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Explosion of Lokon this morning (GMT 09:50)
Another strong explosion strong occurred at 16:50 local time today. The ash plume appears to be of considerable height, although Darwin VAAC has not (yet) published a warning.
Wed, 26 Dec 2012, 13:43
Stromboli volcano has greeted us again with a Christmas present - since the evening of 23 Dec, a lava flow has been issueing, at least intermittently, from the eastern crater area and spreading over the upper part of the Sciara del Fuoco. Activity at the volcano has been elevated since some time, and we will have a look ourselves in the near future.
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Wed, 26 Dec 2012, 12:29
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This morning's seismic signal (CRIN station, INETER) showing continuous tremor
New eruptive activity has been reported from San Cristobal volcano in Nicaragua. It appears that small ash emissions started late in the evening of 25 Dec (local time). Plumes reach 8,000 ft (2.4 km) altitude VAAC Washington reports.
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