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Mayon Alert Raised to Level 4

Posted by feww on December 20, 2009

Mayon Major Eruption Expected Within Days

Fire Earth Forecast: 76% chance Mayon explodes before 2010

State volcanologist in the Philippines raised the Mayon Volcano (13.2576 N, 123.6856 E) alert status  to level on Sunday at 14:30 local time, which means they expect a major eruption within days.

PHIVOLCS reported Sunday that the advancing lava flow had traveled about 4.5 kilometers from the crater along Bonga-Buyuan Gully. Sulfur Dioxide (SO2) emission had increased from 2,034 MT per day (t/d) to 7,024 t/d.

Their seismic network had recorded a total of two hundred twenty two (222) volcanic quakes and tremors in the previous 24 hours, they said.

According to other reports rumbling sounds were heard in Santa Misericordia village near Santo Domingo town, about 8.5 km to the east of Mt Mayon.

Related Links to Mayon Posts and Updates:

6 Responses to “Mayon Alert Raised to Level 4”

  1. […] Mayon Alert Raised to Level 4 […]

  2. […] Mayon Alert Raised to Level 4 […]

  3. […] Mayon Alert Raised to Level 4 […]

  4. […] Mayon Alert Raised to Level 4 […]

  5. […] Mayon Alert Raised to Level 4 […]

  6. feww said

    Mayon Volcano Bulletin 8 Issued by Phivolcs on 21 December 2009 [7:00AM Local Time]

    Mayon Volcano’s (13.2576 N, 123.6856 E) activity escalated during the past 24-hour observation period. Seismic activity dramatically increased in number and size. A total of 1,942 volcanic earthquakes was detected by the seismic network. Many of these volcanic earthquakes were recorded at maximum deflection and continually occurred beginning at 1221H yesterday. Harmonic tremors were also continuously recorded.

    Sulfur Dioxide (SO2) emission rate remained very high at 6,089 tonnes per day (t/d). Audible booming and rumbling sounds were first reported in the eastern flank of the volcano at about 1455H then occasionally occurred beginning 2200H last night. Intensified crater glow and rolling down of incandescent lava fragments from the crater was also persistent. Red hot lava also continuously flowed down along the Bonga-Buyuan, Miisi and Lidong gullies. Lava fountains rising approximately 200 meters above the crater were observed at 2007H, 2008H and 2018H. The lava front has now reached about 5 kilometers downslope from the summit along the Bonga-Buyuan gullies.

    Alert Level 4 is hoisted over Mayon Volcano, meaning a hazardous eruption is possible within days. Thus, PHIVOLCS-DOST reiterates that the Extended Danger Zone (EDZ) from the summit of 8 km on the southern sector of the volcano and 7 km on the northern sector be strictly observed. Areas just outside of this EDZ should prepare for evacuation in the event hazardous explosive eruptions intensify. 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. PHIVOLCS–DOST is closely monitoring Mayon Volcano’s activity and any new significant development will be immediately posted to all concerned.

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