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San Miguel volcano
stratovolcano 2130 m / 6,988 ft
El Salvador, 13.43°N / -88.27°W
Current status: normal or dormant (1 out of 5)
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San Miguel volcano eruptions:
2015, 2014, 2013, 2002, 1997, 1995, 1985-86, 1976-77, 1970, 1967, 1966 (Jul), 1966 (Feb), 1964, 1954, 1939, 1936(?), 1931, 1930, 1929, 1919-20, 1890-91, 1884, 1882, 1867-68, 1862, 1857, 1855, 1854(?), 1844-48, 1819, 1811(?), 1798(?), 1787, 1769, 1762, 1699, 1510 ± 5 years
Typical eruption style:
small to moderate phreatic and phreatomagmatic summit explosions
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San Miguel volcano news & activity updates

San Miguel (Chaparrastique) volcano, Nicaragua: new ash emissions

Friday Aug 14, 2015 11:05 AM | BY: T

Seismicity at San Miguel since the beginning of 2015 (MARN)
Seismicity at San Miguel since the beginning of 2015 (MARN)
Yesterday (13 Aug), a new ash emission occurred from the volcano, the first eruptive activity since early this year. Light ash fall occurred in areas up to 10 km west of the volcano in the small towns of San Jorge, Las Moritas and Piedrita.
The volcano, however, had remained in state of unrest during the past months, with both elevated seismic and SO2 degassing activity. In particular, seismicity started to rise again in July this year. A peak occurred on 12 August, a day before the eruption.
The volcano remains in institutional orange alert, maintained since December 2013.
Previous news
Ash plume from San Miguel's eruption on Monday (MARN)
Wednesday, Jan 28, 2015
A small explosion occurred last Monday at 06:43 morning. Probably phreatic in nature, it was the first eruptive activity since minor ash emissions past July. ... [more]
Pulsating steam emissions from Chaparrastique on 20 Dec 2014 (MARN)
Sunday, Dec 28, 2014
The volcano remains restless with seismic activity above background and shows occasional pulsating gas and steam emissions. Overall, activity has been slowly decreasing over the past months. ... [more]
Tremor amplitude at Chaparrastique volcano over the past weeks (MARN)
Tuesday, Sep 02, 2014
Seismic activity, in particular the level of internal vibration (tremor), has increased again at the volcano. This follows a month of lower values detected. [more]
Ash emissions from Chaparrastique volcano on 23 July (MARN)
Thursday, Jul 24, 2014
New ash emissions occurred on 23 July, similar to the previous such episode on 13 July. Small plumes rose a few 100 m above the crater. Seismic tremor remains high and authorities keep a close watch on the volcano. [more]
Tremor amplitude at Chaparrastique volcano over the past weeks (MARN)
Wednesday, Jul 23, 2014
The volcano continues to produce important gas emissions as well as occasional small ash explosions. Tremor remains at very high levels (20 times above normal), caused by internal fluid movements. The likelihood of new eruptive activity in the near to medium future remains elevated. [more]

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