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The Philippines raised the alert level at the popular Mayon volcano by a notch on Thursday, after detecting volcanic earthquakes and hundreds of rockfall events. At "alert level 3" on a scale of 5 ...
Villagers living within a 6-kilometer (3.7-mile) radius of Mayon volcano’s crater were told to leave the long-designated permanent danger zone and move to safer grounds due to the danger of ...
On December 20, PHIVOLCS raised Mayon's status level to alert level 4 because of an increasing lava flow in the southern portion of the volcano and an increase in sulfur dioxide emission to 750 tonnes per day. Almost 460 earthquakes in the volcano were monitored. In the border of the danger zone, rumbling sounds like thunder were heard.
Incandescent lava was seen flowing slowly from the mouth of the 2,462-metre (8,077-foot) Mayon volcano, which was placed on a high alert level last week following seismic tremors and hundreds of ...
To help prevent harm when living or working on or near a volcano, countries have adopted classifications to describe the various levels and stages of volcanic activity, the two main volcano warning systems being colour codes and/or numeric alert levels. [7] United States Alert System; Indonesia Alert System [8] Russia; Alaska Alert System
On December 9, PHIVOLCS raised the alert level of Kanlaon from level 2 to level 3 after an explosive eruption occurred at the summit vent at 3:03 p.m. The eruption produced a large plume that rose 4,000 m (13,000 ft) above the vent and drifted west-southwest, with pyroclastic flow moving down the south-southeastern side of the volcano.
MANILA (Reuters) -The alert level has been raised at a volcano in the central Philippines after it erupted, sending a 5-kilometre (3.1-miles) high ash cloud into the sky, the country's seismology ...
Going from the alert level chart of Mayon Volcano alone does not lead to a definite conclusion on whether the volcano's current activity can be considered an eruption, the citations include statements from PHIVOLCS representatives that show the present status of the volcano. --112.203.95.233 09:28, 30 December 2009 (UTC)