Two (2) volcanic
earthquakes and eleven (11) rockfall events were detected by the seismic
The seismic network
recorded a total of twenty-six (26) volcanic earthquakes and fifty seven (57)
rockfall events (01 – 07 Feb 2010).
Buang Leveling Line (05-10 January 2010 survey) Deflation
Lidong Leveling Line (05-10 January 2010 survey) Deflation
MRHO Tiltmeter (29 January to 12 February 2010) Deflation
Buang Leveling Line
(27 Nov.– 03
Dec. 2009 survey)
No change relative to 08-10 Nov. 2009 survey.
Overall, the volcano remained inflated by five (5.0) mm. cumulative to February
2008 baseline data
Lidong Leveling Line
(27Nov – 03 Dec.
One (1.0) mm. inflation relative to 05 -06 Nov. 2009 survey. Overall, the volcano
remained inflated by four (4.0) mm. cumulative to October 2007 baseline data
MRHO Tiltmeter (11-17 January 2010)
SO2 Flux Reading (FlySpec)
Level 2 is
in effect over Mayon Volcano. PHIVOLCS-DOST recommends that the public should
not enter the six (6) kilometer radius Permanent Danger Zone and the 7-km
Extended Danger Zone on the southeast of the volcano due to continuing threat
from sudden explosions, rockfalls from the upper slopes and pyroclastic flows
due to sudden collapse of unstable lava deposits. Active river channels and those perennially
identified as lahar prone in the southern sector should also be avoided
especially during bad weather conditions or when there is heavy and prolonged
Note:This serves as
the official PHIVOLCS bulletin for today.