Worldwide Volcano News and Updates

• More about El Hierro volcano

Once more, it seems that the eruption is weakening or ending. Although a weak jacuzzi and stain on the ocean remains visible on the webcam, volcanic tremor is now zero since last night (or the instruments are dead). A small number (5-10 per day, typically) of small earthquakes clustered at around 10 km depth in the SW part of the island continue.

• More about El Hierro volcano

From 12:30 hours local time on February 23, a new increase in seismic activity of the Nevado del Ruiz volcano began, characterized by the occurrence of shallow earthquakes associated with fluid movements and fracturing of rock. INGEOMINAS also measured increased SO2 emissions and some changes in strain measurements. Read all

• More about Nevado del Ruiz volcano

Small earthquake swarms occurred at Hengill volcano on 24 and 25 Feb 2012. The seismic activity is thought to be related to the hydrothermal power plane Orkuveita Reykjavíkur which continues to pump down water in this area.

• More about Hengill volcano

An unusual seismic swarm is occurring near the summit of Kīlauea volcano, Hawai`i, and continues to increase as of today. Read all

• More about Kilauea volcano

Weak strombolian activity has resumed inside the New SE crater early on 24 February, Etna Walk reports. The eruptions were not observed directly, but could be clearly heard even from some distance such as Pedara village on the southern flank of Etna, and were occurring at intervals of tens of minutes over the day. No incandescence was seen at night, suggesting that this activity is still deep within the crater. Read all

• More about Etna volcano

From about midnight yesterday, 23 February, a decrease in several parameters of the activity of Tungurahua volcano is reported by Ecuador's Instituto Geofísico who closely monitor the volcano. Read all

• More about Tungurahua volcano

Jón Frímann on his dedicated blog about Icelandic (and not only) volcanoes closely follows what is happening there: a cluster of minor earthquakes has been showing up under the Katla volcano caldera. This has been following a gradual increase in seismic activity under Katla during the past few weeks. It could be a signal of new volcanic activity to be expected on a timescale of few weeks to months. A new eruption would probably be heralded by a strong seismic swarm, and could start and build up rapidly. It did so in July 2011 when a sudden increase in earthquake activity occurred and there was an small eruption without warning.

• More about Katla volcano

No eruptions have occurred at Bulusan volcano in recent weeks, and signs of unrest have decreased compared to end of December last year. Nevertheless, the Philippine Institute of Volcanology and Seismology (PHILVOLCS) keeps the volcano at alert level 1 (unrest, eruptions possible within weeks to months). Read all

• More about Bulusan volcano

Field measurements on 21 February 2012 at the western sector of the Main Crater Lake yielded slight increase in water temperature of 31.8°C from 31.4°C, decrease in water level of .65 meter from .72 meter and slight increase in acidity of pH 2.82 from pH 2.86. Ground deformation survey (precise leveling) on the Volcano Island last 15 - 17 February 2012 indicated no significant change compared with October 2011, but is nonetheless still inflated compared with baseline data. GPS data for the period of February to first week of November 2011 showed slight deflation in Taal Volcano Island beginning August, but nonetheless also indicate that the edifice is still slightly inflated compared to February baseline data. Read all

• More about Taal volcano