jump to navigation

Mayon update, 22 December 2009 22 December 2009

Posted by admin in activity reports, eruptions, Mayon, Philippines.
Tags: , , ,
trackback

The latest Mayon bulletin, no. 9, reports little change in the volcano’s behaviour over the previous 24 hours:

Seismic activity remained elevated in number and size as the seismic network detected a total of 1,266 volcanic earthquakes. Many of these volcanic earthquakes were recorded at maximum deflection and have continuously occurred since 12:21 PM, 20 December 2009. Harmonic tremors were still continuously being recorded.

Sulphur dioxide emission remained high at 6,529 tonnes/day. An intensified crater glow was observed during a break in the cloud cover, and booming and rumbling noises continued to be audible. Lava continued to flow downslope to a distance of about 5 km from the crater.

The Manila Bulletin is reporting that an increase in alert level at Mayon from 4 to 5 is ‘imminent’. Level 5, the highest level, indicates that a hazardous eruption is ongoing, and presently, for all the disruption, that is not the case. There would have to be a marked upswing in activity from Mayon before level 5 would be justified – which is precisely what the Phivolcs official quoted in the story says. Meanwhile, Phivolcs has warned people to the south of the volcano to stay clear of potential lahar channels.

Fears of infectious disease among the c. 47,000 evacuees crowded into shelters have led to the deployment of extra medical teams by the Philippines Department of Health. The psychological health of the thousands of people now facing a Christmas away from their homes and in the shelters is also being considered: soldiers in Santa hats have been distributing presents to children, and an appeal has gone out for ‘clowns and actors’ to provide entertainment and lift the evacuees’ spirits. Those who have ignored the evacuation order receive no such consideration: the authorities are considering making anyone who insists on staying within the danger zone sign a waiver to the effect that anything that happens to them when the volcano erupts is their own responsibility.

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

News
Alert level 5 for Mayon imminentManila Bulletin, 22 December 2009
Residents told: avoid lahar-prone areas near MayonPhilippine Daily Inquirer, 22 December 2009
Most of 47,000 Filipinos safe from raging volcano – Associated Press, 22 December 2009
DOH deploys more medical teams to Albay – ABS-CBN News, 22 December 2009
Clowns, actors needed in Albay evacuation centers – GMANews.TV, 22 December 2009
Albay residents who refuse to leave may need to sign waiver – GMANews.TV, 22 December 2009

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

The Volcanism Blog

Comments

1. RevDrMarkSr - 22 December 2009

is there a URL for live webcam of Mayon??

2. George - 22 December 2009

Associated Press reports a reduction in number but increase in magnitude of earthquakes at Mayon but the volcano remains obscured by clouds so there are no visual reports of what is going on at the vent.

3. Chance Metz - 22 December 2009

I wish there was a webcam for Mayon but I can’t find any.

4. Chance Metz - 22 December 2009

Pretty much the same thing as the last bulletin.

Mayon Volcano Bulletin 10
23 December 2009

7:00 AM

Mayon Volcano (13.2576 N, 123.6856 E) continued to show an intense level of activity during the past 24-hour observation period. Seismic activity remained elevated in number and size as the seismic network detected 1,051 volcanic earthquakes and continuously recorded harmonic tremors. Many of these volcanic earthquakes were recorded at maximum deflection. Sixty six (66) ash explosions were observed during times of good visibility. These explosions produced grayish to light brown ash columns that reached height from 100 to 1000 meters above the summit before drifting towards southwest.

Sulfur Dioxide (SO2) emission rate remained very high and was measured at an average of 6,737 tons per day (t/d) yesterday. Two hundred eighty (280) audible booming and rumbling sounds were intermittently heard for the past 24 hours. Red hot lava also continuously flowed down along the Bonga-Buyuan, Miisi and Lidong gullies.

Alert Level 4 remains 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 should be free from human activity. 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.

5. Chance Metz - 23 December 2009

More ash, this time to just 4,000 feet asl.

Received FVFE01 at 01:56 UTC, 23/12/09 from RJTD
VA ADVISORY

DTG: 20091223/0156Z
VAAC: TOKYO
VOLCANO: MAYON 0703-03
PSN: N1315E12341
AREA: PHILIPPINES
SUMMIT ELEV: 2462M
ADVISORY NR: 2009/9
INFO SOURCE: MTSAT-1R RPLL
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA OBS FL040 EXTD SW WAS REPORTED AT 20091223/0137Z

OBS VA DTG: 23/0059Z
OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS ABV THE
VO
LCANO AT 22/0050Z FL040 070/28KT FROM JMA NWP MODEL.
FCST VA CLD +6HR: NIL
FCST VA CLD +12HR: NIL
FCST VA CLD +18HR: NIL
RMK: NIL
NXT ADVISORY: NO FURTHER ADVISORIES=

Received FVFE01 at 01:38 UTC, 23/12/09 from RJTD
VA ADVISORY


Sorry comments are closed for this entry