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Current seismic signal from Reventador (CONE station, IG)
IG observed a steam column rising 700 m yesterday and glow at night from the summit, indicating that weak effusive activity continues there.
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Current seismic signal from Tungurahua (RETU station, IG)
Seismic activity, including volcanic-tectonic and long period earthquakes have increased in number and magnitudes during the past 2 days, suggesting new magma might have started to rise within the volcano and could herald a new phase of explosive activity soon.
A strong magnitude 4.9 earthquake has occurred at 11:00 GMT west of El Hierro at 20 km depth. This is so far the by far strongest quake during the seismic crisis.
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Current seismic signal at Masaya (MASN station, INETER)
Periods of elevated volcanic tremor continue to appear regularly at the volcano. At the moment, seismic activity is again relatively calm.
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Location of yesterday's 3.8 earthquake
Some felt earthquakes have occurred recently along the southern boundary of Long Valley Caldera, the latest a 3.8 magnitude quakes yesterday. This is not unusual for the volcanic system and does not mean any volcanic eruption should be expected in a near future. The alert status remains green (normal).
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Depth vs time of quakes at the Long Valley caldera (CA)
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Current seismogram from Telica volcano (TELN station INETER)
The earthquake swarm still continues, accompanied by near continuous tremor, although at reduced intensity.
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Santiaguito and Santa Maria on a clear morning yesterday
Activity has remained weak. Only few small explosions occurred from the dome and the block lava flows on the flanks of the dome showed little movement recently, in the form of small avalanches from their steep fronts.
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Typical explosion from Fuego yesterday
Activity has remained stable, with occasional strombolian explosions ejecting glowing lava bombs to about 100 m height above the crater. Ash plumes rose 600-800 m and drifted about 10 km into southerly directions.
Sun, 31 Mar 2013, 10:30
Weak strombolian activity continues, accompanied by white-bluish degassing (SO2). So far, no new lava flow has appeared.
Sun, 31 Mar 2013, 10:21
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View of Popocatépetl this morning
After the period of increased emissions (sometimes near continuous small to moderate explosions) and seismic activity during 28-29 March, the volcano has calmed down again to levels similar to before.
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Sat, 30 Mar 2013, 20:04
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Small lava overflow from the NE crater of Stromboli (thermal webcam, INGV Catania)
: Activity remains elevated. A small lava overflow has started from the NE crater, accompanied by relatively strong tremor and explosion signals visible on the seismic signal.
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Sat, 30 Mar 2013, 11:19
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Small lava overflow from the NE crater of Stromboli (thermal webcam, INGV Catania)
Activity remains elevated. A small lava overflow has started from the NE crater, accompanied by relatively strong tremor and explosion signals visible on the seismic signal.
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Current seismic signal from Stromboli (ST8 station, INGV)
Sat, 30 Mar 2013, 09:32
The frequency of explosions has been comparably low, with 0-2 events recorded per day. Yesterday and today, two stronger ones occurred that produced ash plumes rising up to 10,000 ft (3 km) altitude.
Sat, 30 Mar 2013, 09:28Tokyo VAAC reported a possible eruption occurred yesterday around 11:00 GMT. A volcanic ash plume was observed at 7,000 ft (2.1 km) altitude and drifting eastwards.
Sat, 30 Mar 2013, 09:15
The lava dome remains very active and produces ash plumes (by a mix of effusive-explosive activity comprising ash venting, explosions, rockfalls and pyroclastic flows from the dome) on a daily basis. The height of the plumes varies mostly between 8-12,000 ft (2.4-3.6 km) altitude.
Sat, 30 Mar 2013, 09:11An ash plume rose to an altitude of 10,000 ft (3 km) earlier today, sign that sometimes strong explosions continue from the volcano, in permanent eruption for more than 6 years now.
Sat, 30 Mar 2013, 08:59
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Current seismic recording from Colima volcano (Soma station, Univ. Colima)
The "Volcano of Fire" has become a tourist attraction with now up to 200 weak to moderate explosions per day, and frequent incandescent rockfalls / small pyroclastic flows that descend the flank of the volcano to a length of up to 1.5 km and are a spectacular view at night.
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Fri, 29 Mar 2013, 20:04
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Location of this morning's M4.6 earthquake (IGN)
: Another large quake of magnitude 4.6, which was widely felt on the island, just occurred at 08:14 GMT at 18 km depth about 10 km west of the island under the seabed.
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Fri, 29 Mar 2013, 09:53
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Explosion yesterday night from Popocatépetl
An increase in activity occurred last night from 20:05 h local time. Small to moderate explosions with ash emissions started to become more frequent. Incandescent tephra was thrown to up to 400-700 m distances onto the northern and northeastern slope of the volcano (see picture).
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Fri, 29 Mar 2013, 07:42
The situation has not changed much. Pulsating tremor and strong earthquakes up to magnitudes 4.3 continued throughout the night and have intensified this morning. A further small migration towards the south can be noted. Most quakes remain in the layer at 18-20 km depth.
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Thu, 28 Mar 2013, 17:10
VSI raised the alert level to the third highest level Siaga (3 out of 4), because significant changes were observed at the crater lake. The most spectacular was the change of the lake water color to dark brown on 24 March.
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Thu, 28 Mar 2013, 15:50
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Diffuse CO2 emission for El Hierro (INVOLCAN)
: The latest CO2 measurements show a significantly higher than normal level of gas emission, consistent with fresh magma arriving from deeper sources.
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Thu, 28 Mar 2013, 15:37
The lava dome on the island remains very active with now more or less daily ash plumes observed rising to 10,000 ft (3 km) elevation,- sign that active dome growth continues along with associated rockfalls / pyroclastic flows and explosions / ash venting.
Thu, 28 Mar 2013, 15:18
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Explosion from Fuego volcano this morning (INSIVUMEH webcam)
An increase in explosive activity is apparent from the volcano observatory's daily reports. For the past 24 hours between yesterday and today, 13 explosions (7 weak and 6 moderate in size) were reported with ash plume heights up to 1200 m above the crater.
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Thu, 28 Mar 2013, 15:12
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Current seismic signal from Reventador (CONE station, IG)
A steam column was seen rising 1 km above the crater yesterday. Seismic activity remains alternating between periods of calm and bursts of tremor / explosion signals.
Thu, 28 Mar 2013, 15:05
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This morning's seismic signal at Masaya (MASN station, INETER)
Volcanic tremor has been fluctuating between elevated levels (such as yesterday and this morning) and normal background levels to which is has decreased again now.
Thu, 28 Mar 2013, 15:02
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This morning's seismic signal from San Cristobal (CRIN station, INETER)
A phase of stronger tremor has occurred today.
Thu, 28 Mar 2013, 15:00Volcanic tremor increased slightly and lava continues to effuse from the fissure vent and feed two main flow fields.
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