Santiaguito volcano (Guatemala): large mud flows triggered by rainfall
Thu, 15 May 2014, 08:24 | BY: T
As expected, heavy rainfalls triggered a hot lahar (turbulent flow of mud, boulders and ash deposits mixed with water) that traveled down the Nima I river valley yesterday. The lahar carried lava blocks up to 2 m in diameter as well as many tree branches and trunks. Abundant steam and sulfur gasses were released from the flowing masses. The lahar passed near the volcano observatory like a mix of "cement", where it let the ground vibrate, increased water content and speed as it reached the Samala river.
Similar rainfall could cause other lahars in the river San Isidro, the other important tributary of the Samala river. (INSIVUMEH)
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Previous news
Wed, 14 May 2014, 06:00
Santa Maria volcano (Guatemala) - Smithsonian / USGS Weekly Volcanic Activity Report for 14 May-20 May 2014 (New Activity / Unrest)
INSIVUMEH reported that on 14 May a lahar, the first since the 9 May eruption at Santa María's Santiaguito lava-dome complex, carried blocks up to 2 m in diameter as well as tree trunks. During 15-16 May explosions generated ash plumes that rose 700 m and drifted W and SW. During an overflight on 16 May, experts from both CONRED and INSIVUMEH observed affected areas from the 9 May eruption including deposits in the Nima I river drainage. ... Read all
Sat, 10 May 2014, 11:05
Santiaguito volcano (Guatemala): collapse of lava flows triggers pyroclastic flows
A strong eruptive phase occurred yesterday from around 10 am local time and produced a series of pyroclastic flows that affected the southern and eastern slopes of the Caliente lava dome. Associated co-igimbrite ash plumes rose to estimated 7-8 km altitude. Read all
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