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Mayon: slight increase in activity 7 January 2010

Posted by admin in activity reports, Mayon, Philippines.
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The latest Mayon bulletin, no. 25 of 7 January 2010, from the Philippine Institute of Volcanology and Seismology (Phivolcs) records a slight increase in activity compared to the previous day’s bulletin: ’20 volcanic quakes and 20 rockfall events’ compared to the ‘4 volcanic quakes and 21 rockfall events’ reported in bulletin no. 24. Sulphur dioxide emission was lower: 672 tonnes/day compared to 1,914 tonnes/day on 6 January. An overflight revealed ‘remnants of lava pile inside the crater’.

Yesterday the interaction of rain with hot lava deposits caused 50-metre steam plumes that drifted south-west: Phivolcs reassured local residents that there was no cause for alarm. Almost all the 47,000 people evacuated from area around Mayon last month have now returned to their homes; meanwhile, the Philippine Government is considering the permanent removal of residents from the 6-km radius ‘permanent danger zone’ around the volcano, a measure that would affect over 12,000 people according to a report on GMANews.tv.

Phivolcs has warned that ‘small explosions’ are still possible at Mayon. The hazard level for Mayon remains at 3.

For all our Mayon coverage: Mayon « The Volcanism Blog.

News
96% of Mayon evacuees decamped – Albay gov – GMANews.tv, 3 January 2010
Permanent relocation of Mayon’s 6-km zone residents eyed – gov – GMANews.tv, 4 January 2010
Mayon steam no cause for alarmPhilippine Daily Inquirer, 7 January 2010
Small explosions still possible at MayonPhilippine Star, 7 January 2010
Mayon activity up anew; alert level 3 remains – GMANews.tv, 7 January 2010

Information
Global Volcanism Program: Mayon – summary information for Mayon (0703-03=)
Philippine Institute of Volcanology and Seismology – website for Phivolcs

The Volcanism Blog