Tungurahua volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 31 July-6 August 2013 (New Activity / Unrest)

Wed, 31 Jul 2013, 06:00
06:00 AM | BY: VN
IG reported that activity at Tungurahua remained high during 31 July-5 August; the seismic network detected explosions, emissions, and long-period earthquakes indicating fluid movement. Although cloud cover mostly prevented visual observations of the crater, plumes were occasionally observed. Roaring was also heard.
Steam plumes with low ash content were observed on 31 July, and on 1 August drifting W. Ashfall was reported in Mocha (25 km WNW) on 31 July and in El Manzano (8 km SW) on 1 August. On 2 August a low-energy steam-and-ash emission was noted.
During 2-3 August ash fell in El Manzano and Choglontus (SW).

Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)
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From: Global Volcanism Program, 2013. Report on Tungurahua. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 31 July-6 August 2013. Smithsonian Institution and US Geological Survey.

Previous news

Mon, 29 Jul 2013, 14:19
During the past days, a further increase in activity of the volcano occurred, characterized by the generation of large explosions and a constant ash eruption column, and several small to big explosions that generated strong vibrations and rattled windows in villages near the volcano. An eruption at 07:23 (local time) on 28 July generated a small pyroclastic flow that affected the upper north and north east flank of the volcano. ... Read all
Thu, 25 Jul 2013, 14:38
This morning's seismic signal from Tungurahua (RETU station, IGPEN)
An increase in activity has occurred since yesterday. For 24 July, IGPEN reports an eruption column of steam and ash reaching 5 km above the crater drifting into westerly directions. During the past night, a further rise in activity has likely occurred, as the increasing tremor signal suggests. Read all
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