Concepción

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 11.538°N
  • 85.622°W

  • 1700 m
    5576 ft

  • 344120
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

10 March-16 March 2010

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)



 Available Weekly Reports


2010: March
2009: December
2007: February | April | July | December
2005: July | August
2003: August


10 March-16 March 2010

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

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

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

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

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

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

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

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

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

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

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


Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
2009 Dec 11 2011 Mar 12 Confirmed 1 Historical Observations
2008 Jul 30 2008 Jul 30 Confirmed 1 Historical Observations
2007 Nov 24 2007 Dec 20 Confirmed 2 Historical Observations
2007 Feb 9 2007 Jul 10 Confirmed 1 Historical Observations
2006 Sep 1 2006 Sep 21 Confirmed 2 Historical Observations
2005 Jul 28 2005 Nov 10 Confirmed 2 Historical Observations
1999 Dec 27 1999 Dec 29 (?) Confirmed 1 Historical Observations
1988 Jun Unknown Confirmed 2 Historical Observations
1985 Dec 2 ± 1 days 1986 Apr 20 (?) Confirmed 1 Historical Observations
1984 Dec 1985 Jan 2 Confirmed 2 Historical Observations
1983 Mar 16 1983 Mar 25 Confirmed 2 Historical Observations
1982 Jan 15 ± 5 days 1982 Feb 14 ± 5 days Confirmed 2 Historical Observations
1978 Mar 30 (in or before) 1978 May (in or after) Confirmed 2 Historical Observations
1977 Apr 4 1977 May 3 Confirmed 2 Historical Observations
1973 Dec 24 1974 Jan 12 Confirmed 2 Historical Observations
1963 May 9 Unknown Confirmed 1 Historical Observations
1962 Jun 1962 Jun Confirmed 2 Historical Observations
[ 1961 Nov 28 ] [ 1961 Dec ] Uncertain 2  
1957 Mar 27 1957 Jul Confirmed 2 Historical Observations
1951 Jul 1955 May Confirmed 2 Historical Observations
1948 1950 Confirmed 1 Historical Observations
1944 Apr 1945 Dec Confirmed 2 Historical Observations
1935 Feb 1935 Feb Confirmed 2 Historical Observations
1929 Aug 1929 Oct Confirmed 2 Historical Observations
1928 Jan 25 Unknown Confirmed 2 Historical Observations
1921 Dec 1926 May Confirmed 2 Historical Observations
1918 Jan 1919 Jul Confirmed 2 Historical Observations
1907 Sep 1910 Confirmed 2 Historical Observations
1902 Unknown Confirmed 2 Historical Observations
1891 Apr 1891 Apr Confirmed 2 Historical Observations
1884 1886 Confirmed 2 Historical Observations
1883 Apr 5 ± 4 days 1883 Jun 30 Confirmed 2 Historical Observations
[ 1800 ± 50 years ] [ Unknown ] Uncertain 2  
0770 BCE ± 50 years Unknown Confirmed 4 Radiocarbon (uncorrected) East flank (Las Pilas, Sintiope)

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Borgia A, van Wyk de Vries B, 2003. The volcano-tectonic evolution of Concepcion, Nicaragua. Bull Volc, 65: 248-265.

Carr M J, 1984. Symmetrical and segmented variation of physical and geochemical characterisitics of the Central American volcanic front. J Volc Geotherm Res, 20: 231-252.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Incer J, 1987. . (pers. comm.).

INETER, 1999-. Volcanoes en Nicaragua. Inst Nicaraguense Estudios Territoriales (http://www.ineter.gob.ni/geofisica/vol/dep-vol.html).

Kutterolf S, Freundt A, Perez W, 2008. Pacific offshore record of plinian arc volcanism in Central America: 2. Tephra volumes and eruptive masses. Geochem Geophys Geosyst, 8: Q02S02, doi:10.1029/2007GC001791.

Mooser F, Meyer-Abich H, McBirney A R, 1958. Central America. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 6: 1-146.

Sapper K, 1925. The Volcanoes of Central America. Halle: Verlag Max Niemeyer, 144 p.

Vallance J W, Schilling S P, Devoli G, Howell M M, 2001. Lahar hazards at Concepcion volcano, Nicaragua. U S Geol Surv Open-File Rpt, 01-457: 1-33.

van Wyk de Vries B, 1993. Tectonics and magma evolution of Nicaraguan volcanic systems. Unpublished PhD thesis, Open Univ, Milton Keynes, 328 p.

van Wyk de Vries B, Borgia A, 1996. The role of basement in volcano deformation. In: McGuire W J, Jones A P and Neuberg J (eds) {Volcano Instability on the Earth and Other Planets}, Geol Soc London Spec Pub, 110: 95-110.

Viramonte J G, Navarro Collado M, Malavasi Rojas E, 1997. Nicaragua-Costa Rica Quaternary volcanic chain. IAVCEI General Assembly, Puerto Vallarta, Mexico, January 19-24, 1997, Fieldtrip Guidebook, 17 p.

Volcán Concepción is one of Nicaragua's highest and most active volcanoes. The symmetrical basaltic-to-dacitic stratovolcano forms the NW half of the dumbbell-shaped island of Ometepe in Lake Nicaragua and is connected to neighboring Madera volcano by a narrow isthmus. A steep-walled summit crater is 250 m deep and has a higher western rim. N-S-trending fractures on the flanks of the volcano have produced chains of spatter cones, cinder cones, lava domes, and maars located on the NW, NE, SE, and southern sides extending in some cases down to Lake Nicaragua. Concepción was constructed above a basement of lake sediments, and the modern cone grew above a largely buried caldera, a small remnant of which forms a break in slope about halfway up the north flank. Frequent explosive eruptions during the past half century have increased the height of the summit significantly above that shown on current topographic maps and have kept the upper part of the volcano unvegetated.