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Santa Maria volcano (Guatemala) - Smithsonian / USGS Weekly Volcanic Activity Report for 30 December-5 January 2021 (Continuing Activity)

Wed, 30 Dec 2020, 06:00
06:00 AM | BY: VN
INSIVUMEH reported that during 29 December-5 January explosions at Santa María's Santiaguito lava-dome complex generated ash plumes that rose 800-900 m above the complex. Plumes sometimes drifted about 1 km SW. The extrusion of blocky lava at Caliente dome generated block-and-ash flows that descended the NW, W, SW, and E flanks, often reaching the base of the complex.
Ashfall on the flanks was noted almost daily, though during 1-2 January ashfall was also reported in Loma Linda (6 km WSW) and San Marcos Palajunoj (8 km SW).

Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
From: Global Volcanism Program, 2020. Report on Santa Maria. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 30 December-5 January 2021. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 16 Dec 2020, 09:44
Strong degassing from Santiaguito volcano (image: @ConredGuatemala/twitter)
After the moderate-to-strong pyroclastic flows as we reported in the last update, fumarolic activity continues to be observed characterized by moderate-to-strong near-constant degassing as can be seen in the image. Gas-steam plumes containing some amount of ash rose 1,640 ft (500 m) above the summit and drifted W-SW. ... Read all
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