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Santa Maria volcano (Guatemala) - Smithsonian / USGS Weekly Volcanic Activity Report for 14 July-20 July 2021 (Continuing Activity)

Wed, 14 Jul 2021, 06:00
06:00 AM | BY: VN
INSIVUMEH reported that during 13-20 July daily explosions at Santa María's Santiaguito lava-dome complex generated ash plumes that rose as high as 1 km above the summit and drifted as far as 12 km SW and W. Collapses of blocky lava from Caliente dome sent avalanches down the SW and W flanks, often reaching the base, and caused minor ashfall mostly on the volcano's flank. Ashfall was also reported in San Marcos (8 km SW) and Loma Linda Palajunoj (6 km WSW) during 14-15 and 19-20 July.
On 15 July blocks of extruded lava formed a lava flow on the W flank that was 700 m long. Block-and-ash flows descended the W and NE flanks.

Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
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From: Global Volcanism Program, 2021. Report on Santa Maria. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 14 July-20 July 2021. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 2 Jun 2021, 06:00
INSIVUMEH reported that during 1-8 June daily explosions at Santa María's Santiaguito lava-dome complex generated ash plumes that rose as high as 1.1 km above the summit and drifted SE, SW, and W. Collapses of blocky lava from Caliente dome sent avalanches down the S, SW, and W flanks, sometimes reaching the base, and caused minor ashfall mostly on the volcano's flank. Ashfall was also reported in San Marcos (8 km SW) and Loma Linda Palajunoj (6 km WSW) during 4-5 June. ... Read all
Wed, 12 May 2021, 06:00
INSIVUMEH reported that on 15 May lahars descended Santa María's Cabello de Ángel (a tributary of Nimá I) drainage, carrying tree trunks, branches, and blocks 1-3 m in diameter. The lahars reached the El Faro estate. The next day lahars descended the Cabello de Ángel and Nimá I drainages carrying blocks up to 1 m in diameter. ... Read all
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