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| Mayon Volcano. AFP file photo |
Mayon Volcano’s (13.2500°N, 123.6833°E) seismic network recorded five (5) volcanic earthquakes during the past 24-hour observation period. Steaming activity and crater glow could not be observed due to thick rain clouds that covered the summit. Sulfur dioxide (SO2) emission on 25 October 2013 was measured at an average of 84 tonnes/day. Ground deformation survey (precise leveling) on the 2nd week of November 2013 showed slight deflation of the edifice compared to August 2013 survey, with the volcano still slightly inflated compared to January 2010 baselines.
Mayon Volcano’s alert status remains at Alert Level 1, which means that it is at abnormal condition. Although this means that presently no magmatic eruption is imminent, it is strongly advised that the public refrain from entering the 6-kilometer radius Permanent Danger Zone (PDZ) due to the perennial life-threatening dangers of rockfalls, landslides/avalanches at the middle to upper slope, sudden ash puffs and steam-driven or phreatic eruptions from the summit. Active stream/river channels and those identified as perennially lahar-prone areas on all sectors of the volcano should also be avoided especially during extreme weather conditions when there is heavy and prolonged rainfall. DOST-PHIVOLCS maintains its close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders.
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The most dangerous volcano in the U.S. roars to life.
Yellowstone trembles again - new earthquake swarm underway
Posted by Adonai on
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| Yellowstone Volcano |
A new earthquake swarm is currently underway at Yellowstone National Park, USA. According to the earthquake list of University of Utah, a new series of relatively stronger earthquakes started on November 23, 2013. Almost all of them are located approximately 19 km (12 miles) NNE of West Yellowstone, MT.
Most noticeable earthquakes are M 3.3 that struck on November 23 at 20:47 UTC (13:47 local time) and M 3.1 that struck on November 24 at 07:18 UTC (00:18 local time).
There are still 7 days when the new YVO monthly update report with more data will be available.
