Volcanos

Roundup of Global Volcanic Activity:

Etna (Sicily, Italy): Except for a small swarm of earthquakes on 20 June, Etna continues to be calm.

Ambrym (Vanuatu): The lava lakes in Benbow and Ambrym craters have been very active during the recent weeks. A large SO2 plume is visible today on NOAA satellite data.

Pagan (Mariana Islands): The volcano continues to emit a strong steam and ash plume visible on satellite images. This activity has been typical of Pagan in the recent months, but no ash emissions could be detected.

Veniaminof (Alaska Peninsula, USA): Volcanic tremor and small explosions continue to be detected in seismic data indicating that the eruption of lava and minor amounts of ash and steam continues. Satellite images obtained over the past 24 hours show elevated surface temperatures at the intracaldera cone. Web camera images from Perryville show a small light-coloured plume rising above the intracaldera cone to just above the rim of the caldera to about 8,000 to 10,000 feet above sea level and night time images showed a persistent incandescent glow at the cone.

Pavlov (Alaska Peninsula, USA): Eruptive activity is continuing, but at a much lower level than earlier this week. The level of seismicity over the past 24 hours has continued to decline and now consists primarily of low level continuous tremor. Periods of continuous tremor are likely associated with lava fountaining and minor ash production, but at this level, emission rates are probably very low. Satellite data over the past 24 hours has shown strong thermal signals at the summit. Pilot reports from last evening have indicated that plumes are rising to levels not much above the summit of the volcano. AVO has received no reports of ash fall on nearby communities today.

Telica (Nicaragua): A new earthquake swarm started this morning, visible on INETER's seismograms.

San Cristobal (Nicaragua): Seismic activity has been at normal, low levels during the recent days.

Masaya (Nicaragua): Seismic activity remains low.

Galeras (Colombia): Weak ash emissions occurred on Wednesday (26 June). Seismic activity otherwise has remained at low levels.

Cumbal (Colombia): INGEOMINAS reports a decrease in seismic activity during the past week, but maintains "yellow" alert level for the volcano.

Reventador (Ecuador): Weak eruptive activity continues with occasional steam and ash emissions during small explosions that create plumes reaching about 1 km.