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Concepción
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Nicaragua
México and Central America
Stratovolcano
2011 CE
Country
Volcanic Region
Primary Volcano Type
Last Known Eruption
11.538°N
85.622°W
1700 m
5577 ft
344120
Latitude
Longitude
Summit
Elevation
Volcano
Number
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2015: May | June | July | October
2010: March
2009: December
2007: February | April | July | December
2005: July | August
2003: August

14 October-20 October 2015
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Based on seismic data, INETER reported that a lahar at Concepción detected between 1210 and 1305 on 14 October impacted local communities. Material was deposited in the streets of La Chirca (N), La Unión (SE), and Los Ramos (SE).
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

1 July-7 July 2015
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INETER reported that gas explosions continued to be detected at Concepción; by 7 July a total of 2,417 explosions, 117 since 30 June, had been detected by the network since activity increased (date not specified).
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

24 June-30 June 2015
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INETER reported that gas explosions continued to be detected at Concepción; by 30 June a total of 2,417 explosions, 113 since 23 June, had been detected by the network since activity increased (date not specified).
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

17 June-23 June 2015
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INETER reported that gas explosions continued to be detected at Concepción; by 23 June a total of 2,304 explosions, 320 since 15 June, had been detected by the network since activity increased (date not specified).
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

10 June-16 June 2015
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INETER reported that gas explosions continued to be detected at Concepción; by 15 June a total of 1,984 explosions, 309 since 9 June, had been detected by the network since an unspecified date of increased activity.
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

3 June-9 June 2015
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In a 9 June statement, INETER noted that 38 gas explosions had been detected in a 24-hour period, bringing the total number to 1,675 detected by the network since an unspecified date of increased activity.
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

27 May-2 June 2015
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INETER noted that 159-177 gas explosions had been detected during 27 May-1 June, bringing the total number to 1,493 detected by the network since an unspecified date of increased activity.
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

20 May-26 May 2015
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According to a 6 May news article, activity at Concepción had increased about three weeks prior and was characterized by fluctuating levels of seismicity and gas explosions. In a 8 May statement, INETER noted that seismic activity and gas explosions at Concepción had decreased since the day before; 15 gas explosions has been detected in a 24-hour period. By 24 May there had been a total of 987 gas explosions detected by the network since an unspecified date of increased activity.
Sources: Instituto Nicaragüense de Estudios Territoriales (INETER)​; La Vanguardia

10 March-16 March 2010
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According to the Washington VAAC, INETER reported an eruption from Concepción on 12 March. A rapidly-dissipating ash cloud was seen on satellite imagery almost 60 km E of the summit.
Source: Washington Volcanic Ash Advisory Center (VAAC)

3 March-9 March 2010
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Based on information from INETER and analyses of satellite imagery, the Washington VAAC reported that on 8 March an ash plume from Concepción rose to an estimated altitude of 2.1 km (7,000 ft) a.s.l. The plume was last seen in satellite imagery later that day 227 km W.
Source: Washington Volcanic Ash Advisory Center (VAAC)

9 December-15 December 2009
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According to a news article, INETER reported that an explosion of ash and gas from Concepción on 11 December produced a plume that rose 150 m above the crater. Ashfall was reported in three nearby communities.
Source: Reuters

19 December-25 December 2007
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According to a news article, INETER reported that an explosion from Concepción on 20 December was followed by gas-and-ash plumes. Ashfall was reported in nearby communities.
Source: Associated Press

4 July-10 July 2007
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INETER reported that explosions in the crater of Concepción on 10 July produced ash-and-gas plumes that drifted NW. Ashfall was reported from areas downwind.
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

18 April-24 April 2007
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INETER reported that explosions in the crater of Concepción on 22 April produced ash-and-gas plumes that drifted WSW.
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

11 April-17 April 2007
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INETER reported that explosions in the crater of Concepción on 8 April produced an ash-and-gas plume that rose to an altitude of 2.7 km (8,900 ft) a.s.l. and drifted W.
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

7 February-13 February 2007
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INETER reported that explosions in the crater of Concepción produced ash-and-gas plumes that traveled down the WSW flanks on 9 February. Explosions continued on 10 February and produced minor ash-and-gas plumes. No seismicity was registered.
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

3 August-9 August 2005
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According to INETER by 0400 on 3 August, 38 earthquakes had occurred on the Island of Ometepe. The strongest earthquake (ML 5.6) occurred at 0603 and was felt in the surrounding region. The epicenter was estimated to be underneath Lake Nicaragua, SE of the Island of Ometepe, ~10-15 km SE of Volcán Maderas. This earthquake did not cause significant damage because the epicenter was not close to populated areas. The magnitude of this event was comparable to the 1972 earthquake in Managua.
Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

27 July-2 August 2005
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According to INETER, an eruption occurred at Concepción on the island of Ometepe on 28 July at dawn. Ash fell in the town of Moyagalpa (W of Ometepe island), and in the zones of Rivas, San Jorge, Buenos Aires, Potosí, and Belén. Seismic tremor was recorded at a seismic station N of the volcano, but no large earthquakes were recorded. By the afternoon, ashfall had reduced considerably or completely ceased, while gas emission continued. No thermal anomalies were observed on satellite imagery. On 29 July during 0500-0800, a series of volcanic earthquakes occurred that may have been associated with small explosions in the crater. At 1025 the seismic station recorded a moderate explosion in the crater. On 31 July, seismic tremor occurred with slight variations. According to news articles, no one was injured by the eruptions.
Sources: Instituto Nicaragüense de Estudios Territoriales (INETER)​; Associated Press

20 August-26 August 2003
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According to news articles, INETER reported increased seismicity at Concepción on 21 August. People on the island of Ometepe did not feel the tremor, which ended on 22 August.
Sources: La Prensa (Nicaragua)​; El Nuevo Diario

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