INSIVUMEH reported that during 11-12 and on 16 January explosions from Santa Mar?a's Santiaguito lava-dome complex generated ash plumes that rose 600-800 m above the complex and drifted SW. Lava flows on 16 January on the SE and SW flanks generated block avalanches and rumbling noises.
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)


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