Intensified activity occurred at Mayon volcano, Philippines over the past 24 hours with 197 volcanic earthquakes. There were 18 explosions and emissions reached a maximum height of 2000 m above the summit. Harmonic tremor was continuously recorded by the seismometers. Night observation showed an intensified crater glow and continuous avalanche of incandescent materials down the slopes. The lava flow has extended 4 kilometers downslope from the crater along Bonga Gully. Sulphur Dioxide emission increased from 1,065 to 2,034 tonnes per day.
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