Tungurahua volcano news & eruption updates:
Tungurahua volcano (Ecuador) activity update: stean and ash venting, occasional explosions, moderate to strong tremor
Tuesday Aug 28, 2012 10:05 AM | BY: T
At the time of writing, a strongly rising tremor signal is visible, possibly associated with new explosions and ash emissions.
Spectrogram of current seismic signal showing rising tremor (PAT1 station, IG)
Over the past days, the volcano's activity was moderate judged from seismicity, but due to near-constant cloud cover difficult to assess.
No larger explosions have occurred over the past 2 days and no ash fall was recorded. At 20h27 local time on 26 Aug, a small volcanic quake was felt in the Cusúa and Juive Grande sectors.
Sunday, Aug 26, 2012
The Instituto Geofísico published a very informative and detailed summary of the current eruption of Tungurahua: ... [more]
Saturday, Aug 25, 2012
Activity has further calmed down over the past day. Only small explosions occurred and the maximum height of the steam and ash plume above the volcano has decreased to 2 km. ... [more]
Tungurahua volcano (Ecuador) activity update: occasional explosions with plumes rising up to 4 km height, constant steaming, moderate tremor
Friday, Aug 24, 2012
Activity remains at similar moderate levels as yesterday. Explosions every few hours are accompanied by strong cannon-shot noises and eject glowing bombs to up to 500 m height. Steam and ash plumes rise up to 4 km above the crater. Light ash fall was reported to the W and NW in the sectors of Chacauco, Cotaló and El ... [more]
Thursday, Aug 23, 2012
Tungurahua's activity has been decreasing since yesterday, which is also visible on the seismograms. Weak explosions could be heard occasionally, but visual observations were impossible due to cloud cover. [more]
Wednesday, Aug 22, 2012
IG reported that on 15 August three small explosions from Tungurahua were detected along with continuous tremor. An ash plume rose 1 km above the crater and drifted W, producing ashfall in El Manzano (8 km SW) and Pillate (7 km W). Activity increased the next day, characterized by increased tremor, roaring sounds, and instances of vibrating windows. An ash plume again rose 1 km, drifted W, and produced ashfall in El Manzano and Pillate. On 17 August two long periods of tremor associated with emissions were detected; 10 explosions were also recorded. Periodic clear views of the crater showed continuous steam-and-ash plumes rising 1.5-3 km above the crater and drifting WNW. Ash fell in Pillate and Bilbao (8 km W). Activity significantly increased at 2100, and strong explosions were detected. Cloud cover prevented visual observations. ... [more]