Smithsonian Institution
Global Volcanism Network Bulletin v. 19, no. 12, December 1994

Bulusan (Philippines)  Phreatic eruptions continue, but at a slower

Luzon, Philippines (12.77N, 124.05E)
All times are local (= GMT + 8 hours)

The phreatic eruptions that started in late November (Bulletin v.
19, no. 11) slowed in December, as evident from an apparent
increase in intervals between ash explosions. There was no great
change in seismic character, with only a few daily earthquakes plus
a few episodes of low-frequency tremor, some of which were probably
related to steam jetting. An explosion at 2213 on 31 December
ejected ash and was accompanied by rumbling and lightning flashes
observed at Salvacion Monitoring Station (South). Areas affected
were Cogon, Tinampo, Monbon, Bagsanga. Another explosion at 0008 on
7 January caused light ashfall at Barangay Cogon, Irosin (5-6 km
from summit). At 1344 on 10 January, an ash explosion sent a plume
1 km above the summit (1.5 km elevation) that drifted SSW. Very
light ashfall was reported in villages up to 7 km SW.

Information Contacts: Same as for Pinatubo.