During 1-30 April white plumes from Ijen rose 100-200 m above the crater; during 1-11 May diffuse white plumes rose 50-100 m. ...plus [lire toutes]

The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows: ...plus [lire toutes]

Since entering the National Park, lava flows have continued to slowly advance towards the ocean but have not made much ground. Pressure variations propagating through Kīlauea volcano have kept the flows from building momentum, but they have persisted sluggishly and lava flows are still visible by means of a 6-7mi / 9-11km round-trip hike from the Kalapana side. When the lava is flowing more slowly (like right now), it actually gives us a chance to approach and interact with it more easily, whereas more vigorous flows require additional safety considerations. For non-hikers, strong glow continues from the summit, visible from Jaggar Overlook & Museum! [lire toutes]

Since about 2 hours ago, tremor from Etna has started to rise steeply, suggesting that the next (26th) paroxysm of the New SE crater is probably imminent. At the moment, visible observations are difficult due to cloud cover, but it could be expected that there is some strombolian activity right now from the crater. ...plus [lire toutes]

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Nicaragua's Masaya volcano, located about 20 km south of Managua city, has entered a new eruptive phase. The latest report of the Instituto Nicaragüense de Estudios Territoriales (INETER) mentions 24 small ash and steam explosions that were recorded between 30 April and 1 May. 9 of these explosions produced ash clouds that rose about 500 m above the Santiago crater rim. ...plus [lire toutes]

A new eruption on the remote Zavodovski Island in the South Sandwich island chain was detected by NASA's Aqua satellite on 27 April 2012. ...plus [lire toutes]

The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows: ...plus [lire toutes]

MVO reported that during 20-27 April activity at the Soufrière Hills lava dome was at a low level. ...plus [lire toutes]

Explosive activity at Shiveluch continued during 20-27 April. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption and was accompanied by fumarolic activity. ...plus [lire toutes]

On 25 April a lahar traveled down Santa María's Rio Nima II drainage, carrying 1.5-m-wide blocks and tree branches. ...plus [lire toutes]

During 24 April-1 May explosions from Sakura-jima produced plumes that rose to altitudes of 1.8-2.7 km (6,000-9,000 ft) a.s.l. and drifted in multiple directions. ...plus [lire toutes]

During 25-26 and 28-30 April gas-and-steam plumes rose 0.5-2 km above Nevado del Ruiz's crater. Seismic signals indicated that an ash plume was emitted at 1248 on 30 April however cloud cover prevented observations. Seismicity fluctuated, but decreased. The Alert Level remained at II (Orange; "eruption likely within days or weeks"). [lire toutes]

Moderate seismic activity from Karymsky continued to be detected during 20-27 April, and indicated that possible ash plumes rose to an altitude of 2.5 km (8,200 ft) a.s.l. during 20 and 24-25 April. ...plus [lire toutes]

PHIVOLCS reported that the Alert Level for Bulusan was lowered to 0 (on a scale of 0-5) on 24 April following a decline in activity after a phreatic eruption on 13 May 2011. ...plus [lire toutes]

CENAPRED reported that gas-and-steam plumes, occasionally containing ash, rose from Popocatépetl during 25-29 April. ...plus [lire toutes]

Lokon volcano produced ash plumes rising to 3.7 km (12,000 ft) altitude and drifting 75 km N, observed from ground and satellite. [lire toutes]

According to a JMA report on 2 May, an eruption at Ioto (Iwo-jima) caused water discoloration to the NE. A new fumarole was also confirmed. [lire toutes]

Elevated surface temperatures were detected over Cleveland in satellite imagery during 25-29 April and possibly on 30 April. ...plus [lire toutes]

Darwin VAAC reported that during 25-26 April ash plumes from Batu Tara rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 37 km W and SW. During 30 April-1 May ash plumes again rose to an altitude of 2.4 km (8,000 ft) a.s.l. then drifted 37-55 km NW. [lire toutes]

Popocatépetl volcano continues to produce ash and steam eruptions several times a day, that generate plumes rising up to 1-2 km above the crater. A more powerful emission is in progress at the time of writing (see image). [lire toutes]

A recently published study shows that Mt Merapi volcano near Yogyakarta has been inflating during the past 2 years, following its last and deadly eruption in 2010. ...plus [lire toutes]

Turrialba had a small phreatic explosion following an increase of seismic and degassing activity. [lire toutes]

Tungurahua volcano had an eruption on 30 April, producing an ash and steam column rising 3 km above the crater. The eruption was accompanied by volcanic earthquakes and tremor, and caused ash fall in nearby communities. A lahar warning was issued as well. [lire toutes]