Phivolcs Alert: Mt. Bulusan Spews Ash In Bicol, Alert Level Raised

By on Nov 6, 2010 in Announcement, Headlines, Natural Disasters, Science, World Comments
bulusan volcano
Image Credit: Flickr User Agapbulusan

The Philippine Institute of Volcanology and Seismology (Phivolcs) issued a notice on their website regarding the alert level status of Bulusan Volcano in Sorsogon Province. Phivolcs raised Alert Level 1 from Alert Level 0 after the volcano spewed ash on Saturday morning.

According to Phivolcs Chief Renato Solidum in a radio interview of dzMM, the volcano ejected a light graying steam and ash around 8:11 a.m. that reached an approximate height of 600 meters above the crater rim.

He added that the public should not enter Bulusan’s 4-kilometer permanent danger zone.

Phivolcs said on their notice that the residents near the valleys and streams should be on extra alert against sediment-laden stream flows in the event of heavy rains. A magnitude 6.0 earthquake at 12:41 a.m. was reported with its epicenter located at 24 kilometers southeast of Burias Island in Masbate, a province in Bicol region. Hours after the earthquake, the ash explosion happened.

Here is the full text of Phivolcs notice.

Bulusan Volcano Bulletin

This is a notice for the raising of the alert level status of Bulusan Volcano in Sorsogon Province.

At 8:11 A.M., Bulusan Volcano (12°46.2’ 124°03’) ejected a light grayish steam and ash column that reached an approximate height of 600 meters above the crater rim. The ash ejection was reflected as an explosion type earthquake with a duration of 57 seconds. Seismic records before the event showed four (4) volcanic earthquakes. Field investigation by PHIVOLCS volcanologists disclosed that areas 6-10 km NW of the crater were affected by traces of ash. These are Brgys. Rangas, Aniog, Cogon and Juban Proper, (Juban Municipality), Casiguran Proper and San Antonio (Casiguran Municipality).

In view of the above activity, PHIVOLCS is now raising the Alert Level status of Bulusan Volcano from Alert level 0 to Alert Level I (abnormal). This current activity may indicate hydrothermal disturbance underneath the volcano which may lead to more steam and ash ejections. In view of this, the public is strictly prohibited to enter the 4-kilometer Permanent Danger Zone. People residing near the valleys and streams should be on extra alert against sediment-laden stream flows in the event of heavy rains.



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