Mayon volcano (Luzon Island, Philippines) activity update: extrusion of viscous lava flow, warning of possible explosive eruption
A viscous lava flow started to descend from the summit crater of the volcano on the southeast slope. On Sunday, it was approx. 350 m long and advancing slowly, with incandescence visible at night.
Mon, 13 Oct 2014, 18:1218:12 PM | BY: T
According to an interview with Philvolcs scientists, the present situation is similar to the days before a large explosion occurred in 1986. The currently slow extrusion could be the foreplay of a potentially dangerous and large explosive eruption. This scenario could occur if the lava flow is caused by new, gas-rich magma, which is now rising and currently pushing out an overlying column of older, degassed and viscous lava above it in the conduit.
According to press articles, more than 12,000 people have been evacuated from areas close to the volcano and a 6 km exclusion zone is in place. Other hazards include landslides and pyroclastic flows if parts of the lava flow collapse.
Wed, 24 Sep 2014, 11:05
During 17-18 September the network recorded 142 volcanic earthquakes and 251 rockfall events. Although rain clouds prevented visual observations of the crater, white steam plumes drifting SSW were noted. ... read all
Wed, 17 Sep 2014, 09:40
The volcano could to be heading towards a new eruption. PHILVOLCS raised the alert level of the volcano was raised from 2 to 3 (on a scale of 1-5) on 15 Sep, following increased seismic activity and observation of small incandescent rockfalls on the southeastern upper flank. ... read all
Sun, 17 Aug 2014, 10:37
A small lava dome is present at the top of the volcano. During a field survey on 12 August, PHIVOLCS scientists observed a new lava dome, approx. 30-50 m high. It is not known when exactly the dome had grown, but it seems likely that it was relatively recently. ... read all
Mon, 1 Jul 2013, 16:33
PHILVOLCS maintains alert level 1 for the volcano. No significant seismic activity is taking place, and no crater glow has been observed recently. Degassing is at normal levels, but ground deformation measurements show that the edifice is still slightly inflated compared to January 2010 baselines. read all
Mon, 3 Jun 2013, 10:56
The alert level for the volcano has been raised by PHILVOLCS. A weak incandescence is sometimes observed at the summit, and slight inflation has been detected, suggesting that magma has started to intrude into the volcanic edifice. ... read all