Kanlaon volcano (Philippines) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 December-19 December 2017 (New Activity / Unrest)
PHIVOLCS reported between 1 and 7 volcanic earthquakes at Kanlaon were recorded each day during 2-8 December, prior to the phreatic eruption on 9 December. Only three events were detected on 10 December, and then the number increased to 155 the next day. The number of daily volcanic earthquakes increased to 578 on 13 December, rising to 1,007 the next day, and peaking at 1,217 on the 15th.
Wed, 13 Dec 2017, 06:0006:00 AM | BY: VN
The earthquake count dropped to 149 on 16 December before returning to six or less through 19 December. White steam plumes rose 800 and 300 m above the crater on 13 and 14 December, respectively. White plumes were diffuse on 15 December; weather clouds prevented views of the summit area during 16-18 December.
Sulfur dioxide emissions were 603-687 tons per day during 13-14 December. The Alert Level remained at 2 (on a scale of 0-5).
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
From: Global Volcanism Program, 2017. Report on Kanlaon. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 13 December-19 December 2017. Smithsonian Institution and US Geological Survey.
Wed, 6 Dec 2017, 06:00
Kanlaon volcano (Philippines) - Smithsonian / USGS Weekly Volcanic Activity Report for 6 December-12 December 2017 (New Activity / Unrest)
PHIVOLCS reported that an approximately 10-minute-long, low-energy phreatic eruption at Kanlaon began at 0947 on 9 December. A plume of voluminous steam and dark ash rose 3-4 km above the summit vent. The event was heard as far away as La Castellana, Negros Occidental. ... Read all
Wed, 16 Aug 2017, 06:00
Kanlaon volcano (Philippines) - Smithsonian / USGS Weekly Volcanic Activity Report for 16 August-22 August 2017 (New Activity / Unrest)
PHIVOLCS reported that between 24 June and 18 August the seismic network at Kanlaon detected 244 volcanic earthquakes. The report stated that the increased seismic activity could be followed by phreatic explosions at the summit crater, despite the absence of visible degassing or steaming from the active vent during 2017. The Alert Level was raised to 1 (on a scale of 0-5), and the public was warned to not enter the 4-km-radius Permanent Danger Zone (PDZ). ... Read all