How Safe is My House?

How Safe is My House?
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Mayon Volcano Update PDF Print
Friday, 29 January 2010 12:12

MAYON VOLCANO UPDATE

29 January 2010; 8:00 AM

 Alert Level: 2

MONITORED PARAMETERS

LATEST OBSERVATIONS

PREVIOUS OBSERVATIONS

 

Seismicity

Five (5) volcanic earthquakes and twelve (12) rockfall events were detected by the seismic network.

The seismic network recorded a total of seventeen (17) volcanic earthquakes and sixty-nine (69) rockfall events (18 - 24 January 2010). 

 

 

 

 

 

 

Ground Deformation

Buang Leveling Line

(05 - 10 January 2010 survey)

Deflation

 

Lidong Leveling Line

(05 - 10 January 2010 survey)

Deflation

 

 

MRHO Tiltmeter

(26 - 28 Jan. 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. survey)

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 Jan. 2010)

Deflation

SO2 Flux Reading

(FlySpec)

1,687 tonnes/day

(28 Jan. 2010)

1,213 tonnes/day

(27 Jan. 2010)

868 tonnes/day

(26 Jan. 2010)

288 tonnes/day

(25 Jan. 2010)

1,076 tonnes/day

(24 Jan. 2010)

Crater glow

 

Intensity II

Intensity II

Steaming Activity

 

Moderate

Wispy – weak

REMARKS/RECOMMENDATION:

Alert 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 rainfall.