Reventador continues to be mildly active with ongoing weak to moderate steam and ash emissions. The Instituto Geofísico reports a 2 km high column of steam and ash rising from Reventador volcano on 18 April. The ash cloud moved to the NW. ...more [read all]

During 25-26 March incandescence from a high part of the volcano was observed. On 26 March a steam emission rose 500 m above the crater. Based on analysis of satellite imagery and seismic data, the Washington VAAC reported that an ash plume drifted 25 km NNW on 26 March. [read all]

Continued small lava flow on NE flank, visible as thermal anomaly. Washington VAAC reported an ash plume that drifted 19 km SE on 16 February. IG observed an ash plume that rose 100 m above the crater on 18 February. [read all]

New activity was detected on 10-13 February. Satellite images showed a thermal anomaly on 10 February. Based on pilot observations, the Washington VAAC reported an ash plume that rose to an altitude of 5.2 km (17,000 ft) a.s.l. and drifted NW. On 11 February ash-and-steam emissions drifted NW. Seismicity increased on 12 February and a lava flow descended the NE flank during 12-13 February. Crater incandescence was observed during 10-13 February. [read all]

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IG reported that staff conducting fieldwork at Reventador during 6-7 January observed constant emissions of gas-and-steam rising about 300 m above the crater and drifting WNW. The emissions originated from a growing lava dome that was a few tens of meters above the crater rim and almost filled the base. ...more [read all]

On Reventador's crater a slight incandescence was seen during 11-12 November and a high number of rockfalls was reported by seismic signals on 13-18 November. Probably from the lava-flow-fronts. [read all]

The new eruption of Reventador volcano has calmed down, but continues, as news reports and the Istituto Geofisico report. [read all]

Reventador volcano in Ecuador has started a new eruption on 10 November with spectacular strombolian activity and lava flows on both its north and south side. The, the fist after its last eruption in July, eruption followed increased seismicity that started at 13h00 on Saturday (8 Nov). ...more [read all]

A new eruption is reported from Reventador volcano. The Ecuadorian Institute of Geophysics (Istituto Geofisico, IG) reports eruptive tremor starting on 27 July from 15h00 local time. In the evening of that day, incandscence became visible from the summit of the volcano, indicating lava flows. An ash plume rose to 500-2000m and light ashfall was reported in the area around Olmedo. ...more [read all]

Infrequent, mostly small ash eruptions continue at Reventarod volcano. On 11 October, the volcano produced an ash plume that rose to an altitude of 4.6 km (15,000 ft) a.s.l. and drifted S. [read all]

Based on seismic interpretation, IG reported that lahars occurred on the flanks of Reventador on 15 and 19 June.  According to the Washington VAAC, the IG reported that activity on 18 June possibly produced ash plumes that drifted NW. Ash was not visible on satellite imagery.

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On 16 May, IG reported that a steam plume from Reventador rose to an altitude of 3.6 km (11,900 ft) a.s.l. and drifted to the NW. The plume was visible on satellite imagery. On 18 May, strong rains resulted in a lahar that lasted approximately 40 minutes. A lahar was also noted on 22 May. Visual observations were hindered during most of the reporting period due to inclement weather.

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On 18, 20, and 23 April, steam-and-gas emissions from Reventador hung near the summit. On 18 April, a plume was seen drifting NW on satellite imagery. On 20 April, a bluish haze of gases was observed. Clouds occasionally inhibited views of the summit during 18-24 April.

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On 28 March, an eruption from Reventador produced an ash plume that rose to an altitude of 5.6 km (18,400 ft) a.s.l. and drifted W. A small lava flow traveled 200 m down the S flank. Incandescent material and ash emissions were observed during 29-31 March. On 1 April, ash plumes rose to an altitude of 7.6 km (24,900 ft)  a.s.l. and incandescent rocks were ejected about 50 m above the crater. Incandescent material was again seen at the summit on 2 April. The
Washington VAAC reported that a strong hotspot was present on satellite imagery during 1-3 April. Based on pilot reports, IG reported that a steam-and-gas plume with little ash content rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted W on 3 April.

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New activity has started at Reventador volcano. In early March, the number of tectonic earthquakes from Reventador had increased. During 8-22 March, steam-and-ash plumes rising to altitudes of 4 km (13,000 ft) a.s.l. were observed sporadically.
On 21 March, noises were reported. The next day, seismic signals changed and indicated possible emissions. On 24 March, local people saw ash plumes and incandescent material near the crater and heard roaring noises. An explosion produced a plume that rose to an altitude of 6.6 km (21,700 ft) a.s.l. and drifted W. Based on reports from IG, the Washington VAAC reported an ash plume to altitudes of 3.7-7 km (12,000-23,000 ft) a.s.l. that drifted NE and WNW during 26-27 March. A thermal anomaly was present on satellite imagery during 24-27 March.

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REVENTADOR Ecuador 0.078°S, 77.656°W

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From the GVP/USGS Weekly Volcanic Activity Report 17-23 August 2005:

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The eruptions at Reventador volcano in Ecuador's eastern cordillera continues into early July with the emission of overlapping, thick blocky lava flows, occasional vulcanian explosions, new fumarolic activity on the N flank of the cone, and the emission of steam, gas and ash. 

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Reventador Volcano in Ecuador has started to erupt again on Tuesday. According to Hugo Yepez, director of Geophysics Institute of the National Polytechnical School (IGEPN), a lava flow inside the crater has appeared. There is an increased possibility of explosive events in the near future.
Reventador, 3,485 meters high, is a symmetrical stratovolcano that had a major explosion on November 3, 2002, when a thick layer of ash reached the capital Quito.

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