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Seismic signal last night / this morning from Pacaya (PCG station, INSIVUMEH)
As the seismic signal suggested, a strong increase in activity occurred yesterday evening and culminated in the effusion of a lava flow from the Mackenney crater which lasted about 2 hours.
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Current seismic recording from Popocatépetl
: Based on satellite imagery, the volcanic activity (evidenced by a significant degassing plume) was no longer visible after 25 May and has probably ended or is pausing at the moment.
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Hazard map of Copahue and threatened villages (graphics created by El Mercurio newspaper)
The seismic crisis continues, but has decreased in intensity. An eruption in the near future still remains a likely scenario, SERNAGEOMIN scientists emphazise, as this decrease in energy could be temporary. It is impossible to predict whether this is a question of days or weeks, or even if an eruption actually will occur.
Thu, 30 May 2013, 13:27Based on satellite imagery, the volcanic activity (evidenced by a significant degassing plume) was no longer visible after 25 May and has probably ended or is pausing at the moment.
Thu, 30 May 2013, 13:24
After a few days of relatively calmness, the volcano erupted at least 3 times today already. It seems to have begun another cycle of increased explosion frequency, which seem typically to last a few days.
Thu, 30 May 2013, 13:23Activity has remained generally low, with occasional small to medium-sized ash explosions and small avalanches from the Caliente dome.
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Current seismic signal from Fuego volcano (FG3 station, INSIVUMEH)
Activity remains weak. As it's rainy season, the volcano is mostly in clouds, but the seismogram and INSIVUMEH reports indicate occasional small explosions, some rockfalls and degassing events.
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Today's seismic recording from Pacaya (PCG station, INSIVUMEH)
The volcano has been mostly hidden in clouds, but strombolian (and perhaps effusive) activity continues as can be seen from glow at night and noises from explosions and degassing. A strong increase of seismic activity seems to have started a few hours ago as suggested by the current seismogram.
Thu, 30 May 2013, 13:13
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Current seismic recording from Popocatépetl
An earthquake swarm and tremor pulses occurred today, which could suggest new magma on the rise, but this has (not yet) resulted in particular surface activity which remained rather calm. Degassing (SO2 emissions) remains strong.
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SO2 plume from Popocatépetl yesterday (NOAA)
Wed, 29 May 2013, 14:06
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Steam and ash plume from Yasur on 8 May 2013 and hazard map of Yasur volcano and explanation of status levels (Geohazards)
: Eruptive activity continues, with fluid lava flows from the southern fissure being still emitted. However, also a very slow trend of decreasing tremor is visible.
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Wed, 29 May 2013, 13:56
Eruptive activity continues, with fluid lava flows from the southern fissure being still emitted. However, also a very slow trend of decreasing tremor is visible.
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Wed, 29 May 2013, 13:47
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Seismic recording this morning at Nevado del Ruiz (OLL station, INGEOMINAS)
Small earthquake swarms at shallow depth continue to plague the volcano. They suggest ongoing (small) magmatic intrusions.
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Wed, 29 May 2013, 13:44
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SO2 plume from Nyiragongo (NOAA)
A significant SO2 plume is visible today on NOAA satellite data, suggesting continuing lava lake activity at the volcano. Unfortunately, security issues in the Goma-Virunga area continue to prevent us from organizing expeditions for the time being.
Wed, 29 May 2013, 13:40
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Current webcam view of Popocatépetl
Since yesterday morning's explosion, the volcano has been relatively quiet and only produced about 1 weak emission of mostly steam per hour.
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Wed, 29 May 2013, 13:32
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Steam and ash plume from Yasur on 8 May 2013 and hazard map of Yasur volcano and explanation of status levels (Geohazards)
Explosive (strombolian) activity level has been increasing recently, the latest bulletin of Geohazard today indicates. The alert level remains at 2, but an increase to 3 is possible in the near future.
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Wed, 29 May 2013, 08:41The eruption might have ended already, or is at least pausing for the moment. Over the past few days, the eruptive and seismic activity have greatly declined, the Alaska Volcano Observatory reports.
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Wed, 29 May 2013, 08:34
The earthquake swarm has increased and continues today, but the volcano has not yet erupted. The earthquakes are occurring at very high frequency (130 per hour) and are mostly "hybrid", i.e. related to both rock-fracturing and fluid-movements within the volcanic edifice.
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Wed, 29 May 2013, 06:00KVERT reported that the S fissure along the W side of Tolbachinsky Dol, a lava plateau on the SW side of Tolbachik, continued to produce very fluid lava flows during 24-31 May that traveled to the W, S, and E sides of the plateau. Cinder cones continued to grow along the S fissure and weak gas-and-steam plumes were observed. A large thermal anomaly on the N part of Tolbachinsky Dol was visible daily in satellite imagery.
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Wed, 29 May 2013, 06:00
Based on visual observations and analyses of satellite data, KVERT reported that during 24-31 May a viscous lava flow effused on the N flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. The Aviation Color Code remained at Orange.
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Wed, 29 May 2013, 06:00INSIVUMEH reported that on 29 May white gas plumes rose 200 m above Santa María's Santiaguito lava-dome complex and drifted W. Avalanches occurred on the NE and S flanks of the dome. An explosion on 30 May generated an ash plume that rose 500 m; ashfall was reported in Calahuaché village.
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Wed, 29 May 2013, 06:00
The Washington VAAC reported that on 1 June gas emissions from Reventador possibly contained diffuse ash. Ash was not detected in satellite images.
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Wed, 29 May 2013, 06:00RVO reported that during 17-31 May white vapor plumes sometimes containing fine ash rose at most 800 m from Rabaul caldera's Tavurvur cone and drifted NW and SE. Ashfall was reported in areas downwind including Rabaul town (3-5 km NW). Roaring and rumbling noises also continued.
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Wed, 29 May 2013, 06:00
OVSICORI-UNA reported that during May temperatures of the cryptodome at Poás were high enough to produce nighttime incandescence. Maximum temperatures of 575 and 450 degrees Celsius were recorded on 8 and 30 May, respectively. Activity of the lake was very similar to that reported for May 2012, characterized by sporadic phreatic eruptions and a slow decline in the water level.
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Wed, 29 May 2013, 06:00INSIVUMEH reported that incandescence from Pacaya's crater was observed late at night on 28 May. Weather conditions prevented observations the next day. On 30 May a small effusive eruption occurred for about two hours.
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Wed, 29 May 2013, 06:00
KVERT reported that during 24-31 May moderate seismic activity continued at Kizimen. Video and satellite data showed that lava continued to extrude from the summit, producing incandescence, strong gas-and-steam activity, and hot avalanches on the W and E flanks. A thermal anomaly was detected daily in satellite images.
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Wed, 29 May 2013, 06:00During 29 May-4 June HVO reported that the circulating lava lake occasionally rose and fell in the deep pit within Kilauea's Halema'uma'u Crater. The plume from the vent continued to deposit variable amounts of ash, spatter, and Pele's hair onto nearby areas.
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Wed, 29 May 2013, 06:00
KVERT reported that weak seismic activity was detected at Karymsky during 25-26 May; technical problems prevented seismic data collection on the other days during 24-31 May. Satellite data showed a thermal anomaly on the volcano on 25 and 28 May, during periods of clearer weather conditions. The Aviation Color Code remained at Orange.
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Wed, 29 May 2013, 06:00INSIVUMEH reported that rumbling and sounds resembling jet engines were heard from Fuego during 28-30 May; cloud cover often inhibited visual observations of the crater. On 29 May a lahar carrying blocks up to 50 cm in diameter traveled SE down the Las Lajas and El Jute drainages. On 30 May a plume was observed rising 200 m above the crater and drifting S.
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