Fuego volcano Dec 2015 - strong strombolian activity and pyroclastic flow deposits

Our recent Guatemala volcano tour coincided with the beginning of another (the 14th in 2015) paroxysm at Fuego volcano, which we observed from close during 29 Dec - 1 Jan. We used two different viewpoints at the base of the volcano, at approx. 5 and 7 km distances: first from near the INSIVUMEH volcano observatory (SW flank, first 3 rows of pictures), and from the SE (last pictures). The latter was chosen instead of initially planned Acatenango because of very bad weather and the presence of a new lava flow on that side.
Many thanks for support goes to the friendly staff from OVFGO/INSIVUMEH, in particular Edgar Barrios!
Stombolian eruption from Fuego after sunset (Photo: Tom Pfeiffer)
Stombolian eruption from Fuego after sunset (Photo: Tom Pfeiffer) [info]
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Strong strombolian explosion, sending incandescent bombs to several hundred meters of height above the crater. (Photo: Tom Pfeiffer)
Strong strombolian explosion, sending incandescent bombs to several hundred meters of height above t... [info]
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Fuego volcano during a strong strombolian explosion seen from the southwest. (Photo: Tom Pfeiffer)
Fuego volcano during a strong strombolian explosion seen from the southwest. (Photo: Tom Pfeiffer) [info]
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A powerful explosion showers the upper cone with glowing lava bombs, generating abundant avalanches and an ash plume. (Photo: Tom Pfeiffer)
A powerful explosion showers the upper cone with glowing lava bombs, generating abundant avalanches ... [info]
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Powerful explosion with bombs in all directions and many hundred meters height / distance. Our viewpoint in approx. 5 km distance is hit by a strong shock wave. (Photo: Tom Pfeiffer)
Powerful explosion with bombs in all directions and many hundred meters height / distance. Our viewp... [info]
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A weaker explosion with the volcano in moonlight. (Photo: Tom Pfeiffer)
A weaker explosion with the volcano in moonlight. (Photo: Tom Pfeiffer) [info]
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Strombolian activity occurs at intervals of 1-10 minutes. (Photo: Tom Pfeiffer)
Strombolian activity occurs at intervals of 1-10 minutes. (Photo: Tom Pfeiffer) [info]
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Medium-sized strombolian explosion at Fuego. (Photo: Tom Pfeiffer)
Medium-sized strombolian explosion at Fuego. (Photo: Tom Pfeiffer) [info]
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During the second half of the night 29-30 Dec, activity seemed to decrease, but ... (Photo: Tom Pfeiffer)
During the second half of the night 29-30 Dec, activity seemed to decrease, but ... (Photo: Tom Pfei... [info]
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A pyroclastic flow occurs on the southern side, probably as a result of a larger collapse of accumulated pyroclastic material on the steep upper flank. We only see the ash plume rising ... (Photo: Tom Pfeiffer)
A pyroclastic flow occurs on the southern side, probably as a result of a larger collapse of accumul... [info]
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... and soon feel the effects of ash fall on our gear. (Photo: Tom Pfeiffer)
... and soon feel the effects of ash fall on our gear. (Photo: Tom Pfeiffer) [info]
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View of Fuego from the east on 31 Dec 2015: the prominent ravine is one of the main channels of pyroclastic flows into the Las Lajas and San Antonio canyons further downslope. (Photo: Tom Pfeiffer)
View of Fuego from the east on 31 Dec 2015: the prominent ravine is one of the main channels of pyro... [info]
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Strombolian activity at dusk. (Photo: Tom Pfeiffer)
Strombolian activity at dusk. (Photo: Tom Pfeiffer) [info]
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Strong strombolian explosion after dusk. (Photo: Tom Pfeiffer)
Strong strombolian explosion after dusk. (Photo: Tom Pfeiffer) [info]
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A small lava flow is active on the upper eastern flank, generating near-constant glowing rockfalls channeled into the eastern ravine. (Photo: Tom Pfeiffer)
A small lava flow is active on the upper eastern flank, generating near-constant glowing rockfalls c... [info]
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Abundant glowing rockfalls also occur on the southern flank (l). (Photo: Tom Pfeiffer)
Abundant glowing rockfalls also occur on the southern flank (l). (Photo: Tom Pfeiffer) [info]
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Rain of bombs after a moderate strombolian explosion. (Photo: Tom Pfeiffer)
Rain of bombs after a moderate strombolian explosion. (Photo: Tom Pfeiffer) [info]
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A stronger strombolian eruption throws thousands of lava bombs onto the southern flank (l), while rockfalls continue through the eastern ravine (r). (Photo: Tom Pfeiffer)
A stronger strombolian eruption throws thousands of lava bombs onto the southern flank (l), while ro... [info]
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Ash emission on 1 Jan 2016. (Photo: Tom Pfeiffer)
Ash emission on 1 Jan 2016. (Photo: Tom Pfeiffer) [info]
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Strombolian activity continues into the new year. (Photo: Tom Pfeiffer)
Strombolian activity continues into the new year. (Photo: Tom Pfeiffer) [info]
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Short visit of the San Antonio canyon, filled by pyroclastic flow deposits only a few weeks old. We have to keep a close watch on the volcano, which seems calmer this morning. (Photo: Tom Pfeiffer)
Short visit of the San Antonio canyon, filled by pyroclastic flow deposits only a few weeks old. We ... [info]
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Fresh block and ash flow deposit. (Photo: Tom Pfeiffer)
Fresh block and ash flow deposit. (Photo: Tom Pfeiffer) [info]
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Tongues of lag breccia where individual pyroclastic flow units came to a halt. (Photo: Tom Pfeiffer)
Tongues of lag breccia where individual pyroclastic flow units came to a halt. (Photo: Tom Pfeiffer) [info]
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Vegetation knocked over at the margin of the flow. The deposits of such flows have amazingly sharp margins: vegetation behind seems completely intact and shows no signs of damage at all. (Photo: Tom Pfeiffer)
Vegetation knocked over at the margin of the flow. The deposits of such flows have amazingly sharp m... [info]
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