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Hudson volcano
stratovolcano 1905 m / 6,250 ft
Southern Chile and Argentina, South America, -45.9°S / -72.97°W
Current status: normal or dormant (1 out of 5)| Reports
Hudson volcano books
Hudson volcano eruptions:
2011, 1991, 1971, 1891
radiocarbon dated: 1740 ± 150, 860 AD ± 100, 390 AD ± 150, 120 BC ± 200, 790 BC ± 75, 1890 BC (?), 2250 BC, 3890 BC ± 500, 4750 BC (?), 4960 BC ± 150, 8010 BC (?)
Typical eruption style:
explosive
Last earthquakes nearby
Latest satellite images
 

News & activity updates:

Cerro Hudson volcano (Southern Chile): new eruption

Friday Oct 28, 2011 10:08 AM |

Hudon volcano's new eruptive fissure (photo taken on October 26, courtesy and copyright Sernageomin.cl)
Hudon volcano's new eruptive fissure (photo taken on October 26, courtesy and copyright Sernageomin.cl)
An eruption has started at Cerro Hudson volcano in Chile. The activity comes from a new eruptive fissure located south of the summit with 3 vents that emit clouds of steam and some ash, rising to 5.5 km elevation.
The authorities are distributing face masks to the population to protect from breathing ash. So far, 128 persons are reported evacuated, while 4 persons refused to leave their homes. More evacuations in a radius of 45 km around the volcano are planned, and the highest alert has been declared for the communities of Aysén, Río Ibáñez and Chile Chico and the Región de Aysén region.
Compared to previous days, seismicity has decreased, Enrique Valdivieso, the director of SERNAGEOMIN told the El Diario de Aysen newspaper. A major concern remains the threat of lahars (mud flows), likely to affect the Río Sorpresa valley.

While the eruption at present is small in scale, it is possible, that this is only a precursory, phreatic phase of a larger eruption still to come. When magma rises towards the surface, overheated ground water often creates small to medium-sized explosions that precede the main phase of an eruption.
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Hudson volcano (Chile): eruption warning, increased seismic activity and evacuations

Thursday Oct 27, 2011 08:08 AM |

Another volcano in Southern Chile, Mt Hudson in the Aysén region, could be close to a new eruption. Starting on Tuesday, over 100 earthquakes have been detected under the volcano by the National Institute of Geology (SERNAGEOMIN), who raised the alert level to Red ("eruption could be imminent").
The Chilean government has already evacuated over 100 residents living within 25 miles of the Hudson volcano.
Eruptions of Hudson volcano are typically highly explosive and although the area is sparsely populated, pose a serious risk of pyroclastic flows, ash falls, and mud flows generated by melting of the ice and snow present on the slopes of the massive volcano. The last eruption in 1991 was Chile's second largest in the 20th century.
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