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March 2010 activity at Concepción, Nicaragua 27 March 2010

Posted by admin in activity reports, Concepción, eruptions, Nicaragua.
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Among the volcanic events that passed unrecorded here during my recent absence through illness was a burst of activity from Nicaragua’s Concepción volcano (which is among the country’s most active volcanoes).

On 8 March an ash and gas plume from Concepción rose to 2,100 metres altitude and light ashfall was reported in nearby communities. Low levels of seismic activity and occasional small explosions producing light ashfall were reported during subsequent days. On 12 March Washington VAAC issued a volcanic ash advisory reporting an eruption producing an ash cloud that reached FL100 (10,000 feet / 3,000 metres altitude). According to news reports there were two further explosions on 14 March. No casualties or damage resulted, although civil defence alerts remained in place for communities around the volcano. The Nicaraguan geological service INETER described the volcano on 19 March as ‘practically in a full eruptive phase’, with 34 explosions between 18:00 on 17 March and 11:45 on 18 March. On 19 March it was reported that the Nicaraguan government was sending army and navy units to the area around Concepción to strengthen civil defence preparations and prepare evacuation routes, ‘just in case’. The location of Concepción, on the island of Ometepe in Lake Nicaragua, makes floods and tsunamis a potential danger if the volcano were to erupt.

However, shortly afterwards activity at the volcano began to decline, with INETER reporting on 22 March that degassing and seismic activity had fallen to low levels in comparison with the preceding days. On 24 March INETER confirmed a ‘considerable reduction in activity’ but reported continuing ‘anomalous’ levels of seismicity. The current situation is that activity remains low, but the volcano continues to be carefully monitored.

News
El volcán Concepción lanza gases y cenizas sin causar víctimas en Nicaragua – El Norte de Castilla, 8 March 2010
Nicaragua: volcán Concepción presenta columna de cenizas de 20 metros – 123.cl, 10 March 2010
Volcán en Nicaragua lanza toneladas de cenizas y gases, sin causar víctimas – Agencia EFE, 12 March 2010
Volcán nicaragüense vuelve a lanzar columnas de cenizas sin causar víctimasABC, 14 March 2010
Concepción está en plena erupciónLa Prensa, 19 March 2010
Ejército se prepara ante cualquier escenarioEl Nuevo Diario, 20 March 2010
Disminuye actividad del volcán ConcepciónNicaragua Hoy, 22 March 2010
Concepción mantiene sismicidad ‘anómala’La Prensa, 24 March 2010

Information
Global Volcanism Program: Concepción – summary information for Concepción (1404-12=)
Instituto Nicaragüense de Estudios Territoriales – INETER main page
INETER Comunicados Oficiales – INETER volcano bulletins (hopelessly out of date)

The Volcanism Blog