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Santa Maria volcano (Guatemala) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 December-15 December 2020 (Continuing Activity)

Wed, 9 Dec 2020, 06:00
06:00 AM | BY: VN
INSIVUMEH reported that during 9-15 December explosions at Santa María's Santiaguito lava-dome complex generated ash plumes that rose as high as 900 m above the complex. The extrusion of blocky lava at the WSW part of Caliente dome generated block-and-ash flows that descended the NW, WSW, SW, and E flanks often reaching the base of the complex. The activity increased at 0430 on 11 December with notable avalanches of material and block-and-ash flows lava dome traveling down the W and SW flanks.
Ash plumes drifted 15 km SW, causing ashfall in areas downwind including Finca Montebello, Loma Linda, and San Marcos Palajunoj. Activity remained elevated at least through 13 December; ash plumes drifted as far as 20 km W, SW, and S, and pyroclastic flows descended the flanks.

Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
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From: Global Volcanism Program, 2020. Report on Santa Maria. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 9 December-15 December 2020. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 18 Nov 2020, 06:00
INSIVUMEH reported that explosions at Santa María's Santiaguito lava-dome complex generated ash plumes that rose 1.1 km above the complex and caused ashfall in areas SW and E, based on El Observatorio Vulcanológico del Complejo Volcánico Santa María-Santiaguito (OVSAN) observations. Weak pyroclastic flows descended the W flank of Caliente cone. ... Read all
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