A lava dome that appeared within the summit crater of Caliente in October 2016 has continued to grow, producing frequent block avalanches down the flanks. The Caliente vent has an elevation of about 2.5 km, and the summit of Santa Maria is at about 3.7 km elevation. Ash explosions, pyroclastic flows, and lava flows have emerged from Caliente, the youngest of the four vents in the complex, for more than 40 years. The lava dome-complex formed within a large crater on the SW flank of Santa Maria that formed during the 1902 eruption. The Santiaguito lava-dome complex of Guatemala's Santa María volcano has been actively erupting since 1922. Most Recent Bulletin Report: April 2023 (BGVN 48:04) Cite this ReportĪctive lava flows, explosions, ash plumes, and ashfall during December 2022-March 2023 Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH) On 8 February ashfall was observed in the direct vicinity of the volcano. Explosions generated short-range pyroclastic flows that descended the E and SE flanks on 9 February and the S, SW, and W flanks on 12 February. The explosions produced block avalanches around the dome and along the SE, S, SW, and W flanks. Daily explosions generated gas-and-ash plumes that rose as high as 900 m above the dome and drifted S, SW, W, and NW. Incandescence from the dome and upper lava flow was visible during most nights and early mornings. Weak, moderate, and sometimes abundant degassing was observed daily and rose as high as 200 m above the crater. INSIVUMEH reported that eruptive activity continued at Santa Maria’s Santiaguito lava dome complex during 7-13 February with lava extrusion at the Caliente dome. Most Recent Weekly Report: 7 February-13 February 2024 Cite this Report
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