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Canlaon volcano (also spelled Kanlaon) on Negros Island is one of the most active volcanoes of the Philippines and the most active one of the Central Philippines. It forms the highest peak of Negros Island and is located west of Canlaon about 36 km southeast of Bacolod City and belongs to Canlaon National Park.
On 5 May PHIVOLCS reported that activity of the volcano has been generally decreasing since the last phreatic eruption on 15 June 2016. ...more
Seismicity had returned to baseline levels, no significant deformation had been detected since August 2016, sulfur dioxide emissions were low, and no steaming had been observed since 29 September 2016. The Alert Level was lowered to 0 (on a scale of 0-5), though the public was warned to not enter the 4-km-radius Permanent Danger Zone (PDZ). [less]
PHIVOLCS reported that during 20-25 July diffuse white plumes rose above Kanlaon; On 20 July plumes were a dirty-white color, and on 25 July they rose 200 m and drifted NW and SW. The Alert Level remained at 1 (on a scale of 0-5). ...more
The volcano remains restless. A small explosion occurred Saturday morning at 09:19 local time. ...more
According to PHILVOLCS, the eruption which lasted less than 30 minutes was entirely steam-driven (phreatic or hydrothermal), i.e. caused by overheated ground water flashing into steam inside the hydrothermal system overlying a (probably small) body of magma, but no magma itself was projected to the surface. A small plume of ash rose approx. 400 m and caused minor ash fall in San Miguel, Gintubdan and Araal in La Carlota, Negros Occidental. [less]
Two small explosions occurred at the volcano yesterday evening, at around 18:20 and 19:18 local time. An ash plume rose to approx. 1500 m above the summit and some freshly ejected incandescent bombs could be seen at the crater rim. ...more
Light ash falls occurred in areas northwest from the volcano in up to 35 km distance including Bago City. Whether the explosions were caused by fresh (juvenile) magma that had risen or were the result of overheated ground water flashing to steam (phreatic explosions) is impossible to say without a more detailed analysis of the erupted ash. The volcano has been showing signs of unrest for several months, including slight inflation of the edifice and increased earthquake activity. A nearby magnitude 3.0 quake was felt on 18 March and might have a relation with the new volcanic activity as well. [less]
Ash emission from Canlaon volcano on 24 Nov 2015 (image: Jigz Santiago)
PHIVOLCS raised the alert level of the volcano following an increase in activity. Starting from 21:55 local time on 24 Nov, a series of phreatic explosions occurred from the summit crater, producing ash plumes that rose up to approx. 1 km. ...more
According to PHILVOLCS, this explosive activity was followed by increased seismicity and volcanic tremor probably caused by degassing. An exclusion zone of 4 km radius around the crater was put in place, to prevent similar accidents as when 3 climbers were killed by a sudden explosion in the 1990s. [less]
Three 50 m wide cracks have appeared on on the upper flank of Canlaon volcano (also spelled Kanlaon) near the crater after the M6.7 earthquake on Negros island in the Philippines on 6 Feb 2012. ...more
According to PHILVOLCS, the Philippine volcano monitoring agency, the cracks were caused by the earthquake and are not likely a precursor for a new eruption, which would be the first since 2006, although Canalon is one of the country's most active volcanoes. A more detailed investigation is planned and the mountain was for now closed for climbers. Erik Klemetti on his more detailed post on Eruptions Blog mentions rightly that a major hazard from Canlaon volcano are landslides and mud flows, and that these are not necessarily related to an eruption, but can be triggered as well by heavy rain and gravitational instability caused by earthquake movements. In this context, the cracks should be examined and monitored carefully. [less]
Based on interpretations of seismic data, an explosion at Canlaon that lasted more than 10 minutes occurred on 23 July. An ash column was not observed due to cloud cover. Trace deposits of ash fell up to 9 km ENE of the crater in the neighborhoods of Pula, Malaiba, and Lumapao. On 24 July, PHIVOLCS reported a total of 16 volcanic earthquakes, 3 short-duration tremors, and 2 earthquakes indicating small explosions. Ash was not observed.
As PHILVOLCS reports, brief periods of ash and steam emissions continue at Kanlaon Volcano. This is a manifestation of the ongoing low-level unrest. Alert Level 1 remains enforced. For the latest significant event and bulletin issued, see the Chronology of Events file published by PHILVOLCS.
Weak activity continues at Kanlaon volcano: Between 3 and 12 June, 4 small phreatic explosions occurred at the summit crater of Kanlaon volcano (3 June, 10 June, 2 times on 12 June). The explosions produced mainly steam and gas as well as small quantities of ash to heights up to 1000 m. Light ash-fall occurred on the upper slopes of the volcano. An exclusion zone of 4 km around the crater is being maintained. --->more on Kanlaon volcano
3 May, 2005: Canlaon continues to produce mild steam and ash clouds, which rise up to around 5-700 m above the active crater and sometimes causing problems with local air traffic and shutdown of nearby airports.
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