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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 (San Salvador): eruption warning

Fri, 23 May 2014, 09:55
09:55 AM | BY: T
Ash puffs from Chaparrastique volcano on 19 May
Ash puffs from Chaparrastique volcano on 19 May
Tremor amplitude over the past years (SNET)
Tremor amplitude over the past years (SNET)
An eruption of the Chaparrastique volcano in the near future is becoming more and more likely. Tremor continues to rise and pulsating gas emissions have become stronger and sometimes contain small amounts of volcanic ash.
The increased tremor and gas emissions suggest movements of hot fluids (gasses, water, magma) into the volcano's shallow plumbing system. MARN expects an eruption either from the central crater or a flank vent on the northern side (where most microseismic activity has been focused).
According to SNET, the fine ash that was observed during recent days was "juvenile", i.e. originating from fresh magma (as opposed to fragmented old material). Technically, the volcano is therefore already in eruption.
Civil Protection ordered the immediate eviction of 800 to 1,000 people living near the volcano.
Previous news
Thu, 15 May 2014, 08:52
Microseismic activity at Chaparrastique volcano (SNET)
During the past 2 days, seismic activity at the volcano has shown a sharp increase after it had been gradually decreasing since late February. ... read all
Mon, 28 Apr 2014, 15:32
View of the steam plume from Charrapastique volcano (La Prensa Grafica)
The Chaparrastique volcano remains restless. An increase in degassing and seismic activity on Sunday was reported. According to a local press article, MARN observed pulsating gas emissions that reached heights between 200 and 600 meters between 9-11 pm yesterday local time as well after midnight. ... read all
Mon, 10 Mar 2014, 09:30
Tremor amplitude at San Miguel volcano over the past weeks (MARN)
NO significant changes in activity have been noted. Seismic activity remains elevated, but at stable levels lower than during the second half of February. ... read all
Sun, 2 Mar 2014, 08:55
Tremor intensity at San Miguel volcano (MARN)
Seismic and degassing activity at the volcano decreased during the past days at bit, but remain elevated. The gas plume reached 100 m above the crater and drifted S-SW yesterday. read all
Fri, 21 Feb 2014, 13:29
Tremor intensity at San Miguel volcano (MARN)
The situation has remained essentially unchanged and the volcano has (not yet) erupted again. Seismic activity remains high and continues to increase overall, while surface activity consists of pulsating gas emissions reaching a height of 200 m. ... read all
 

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