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Summary of world-wide volcanic activity 25 April -1 May 2012

Thursday May 03, 2012 09:19 AM | BY: T

The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows:

-- new activity ---

Batu Tara (Sunda Islands, Indonesia): occasional ash eruptions, plumes up to 2.4 km altitude
Cleveland (Aleutians, Alaska): new small lava dome 25 m across detected
Iwo-jima (Ioto) (Volcano Islands, Japan): small eruption on 2 May, lake water discoloration
Lokon (North Sulawesi, Indonesia): occasional ash eruptions, plumes reaching 3.7 km altitude
Popocatépetl (Mexico): gas-and-steam emissions, occasional explosions ejecting lava bombs up to 1 km, crater glow

--- ongoing activity ---

Bulusan (Philippines): decline in activity since last phreatic eruption in May 2011, alert lowered to normal
Etna (Sicily, Italy): New SEC paroxysm nr 25 on 24 April
Karmysky (Kamchatka): occasional small ash eruptions, thermal anomaly at summit crater
Kilauea (Hawai'i): active lava lake in Halema'uma'u crater, active lava flows advancing on coastal plain to within about 900 m from coast
Nevado del Ruiz (Colombia): strong degassing, possible phreatic explosions, eruption warning
Sakurajima (Japan): ongoing occasional vulcanian eruptions, ash reaching 2.7 km altitude
Santiaguito (Guatemala): lahar on 25 April, viscous lava flows and occasional explosions
Shiveluch (Kamchatka): continuing strong ash explosions up to 10 km altitude, viscous lava flow in 2010 crater
Soufriere Hills (Montserrat): low level of activity, recent rockfall and pyroclastic deposits observed
Tungurahua (Ecuador): intermittent explosions, ash venting, ash fall
---
Links / Sources:
Previous news
Thursday, Apr 19, 2012
The past week was characterized by an important increase of Popocatéptl volcano's activity in Mexico and one of the Etna's most spectacular recent episodes of fire fountaining. ... [more]
Thursday, Apr 12, 2012
Another unexciting week in terms of volcanic activity has passed. ... [more]
Tuesday, Apr 10, 2012
We have created a new website that provides an easy-to-use interface to view various volcano webcams and some other online data in one site: ... [more]
Thursday, Apr 05, 2012
Another volcanically relatively quiet week has passed. Some exceptions were April's Fool's day eruption at Etna, and ongoing strong eruptions at Shiveluch in Kamchatka (where activity needs to be colossal to make the news.) ... [more]
Thursday, Mar 29, 2012
No major eruptions have occurred during the past week. Iceland, Santorini and Etna remain quiet. In Indonesia, Krakatau and Semeru are very active, Ijen remains at high alert. Soufrière Hills on Montserrat seems to be waking up, while Puyehue in Chile's eruption is fading. ... [more]

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