Latest Volcanic Activity

The Centro de Informa��o e Vigil�ncia Sismovulc�nica dos A�ores (CIVISA) reported that on 1 April low-magnitude seismic activity was off the NW coast of Pico, in a NE-SW zone along the Faial-Pico channel, W of Madalena to N of Lagido, and encompassing the Cachorro Submarine Volcanic System. The eart...

The Observatoire Volcanologique du Piton de la Fournaise (OVPF) reported that eruptive activity at Piton de la Fournaise resumed on 8 April. Low-amplitude continuous volcanic tremor that began on 3 April, beneath the ESE flank in the same location as during earlier eruptive phases, sharply decreased...

The Observatorio Vulcanol�gico y Sismol�gico de Costa Rica-Universidad Nacional (OVSICORI-UNA) reported an eruption at Po�s on 10 April. An eruption signal was recorded on both seismic and acoustic instruments at 2243 that lasted for several minutes. Weather clouds and darkness prevented visual obse...

The Japan Meteorological Agency (JMA) reported ongoing eruptive activity at Minamidake Crater (Aira Caldera?s Sakurajima volcano) during 6-12 April. An eruptive event on 9 April generated an ash plume that rose 1.5 km above the crater rim. Eruptive events at 0026, 1553, 1625, and 1648 on 10 April pr...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Dukono continued during 9-14 April. Daily white-and-gray ash plumes rose 400-1,200 m above the summit and drifted multiple directions. The Alert Level remained at Level 2 (on a scale of 1-4) and the public ...

The Alaska Volcano Observatory (AVO) reported that slow lava effusion continued to feed a thick flow in Great Sitkin?s summit crater during 8-14 April, with growth concentrated on the SW part of the flow. The seismic network recorded occasional small volcanic earthquakes and seismic signals from sma...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported continuing eruptive activity at Kanlaon during 8-14 April. The seismic network recorded 7-12 daily volcanic earthquakes during 8-11 April, including 1-5 daily periods of tremor lasting four minutes to two hours and 26 minutes...

The Hawaiian Volcano Observatory (HVO) reported that the eruption within Kilauea?s Kaluapele summit caldera, characterized by episodic fountaining, incandescence, and intermittent spatter from craters along the SW margin of Halema?uma?u Crater, continued at variable levels during 9-14 April. Activit...

The Kamchatkan Volcanic Eruption Response Team (KVERT) reported that lava flows at Krasheninnikov continued to effuse onto the ENE and E flanks of the Northern Cone during 8-14 April. A near-daily thermal anomaly was identified in satellite images. Satellite images showed small thermal anomalies alo...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported periodic ash plumes at Lewotobi Laki-laki during 9-14 April. Daily white plumes rose as high as 500 m above the summit and drifted in multiple directions. Gray ash plumes recorded at 0724 and 2216 on 10 April, at 1958 on 12 April, a...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption at Mayon continued during 8-14 April, characterized by lava effusion, pyroclastic density currents (PDCs), incandescent rockfalls, ash plumes, and occasional minor Strombolian activity. Emissions were visibl...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption at Merapi (on Java) continued during 9-14 April with occasional lava avalanches produced by the active lava dome on the upper SW flank. White plumes rose as high as 525 m above the summit on most days and drifted i...

The Instituto Geof�sico-Escuela Polit�cnica Nacional (IG-EPN) reported that eruptive activity at Reventador continued at a high level during 8-14 April. Seismicity included 58-90 daily explosions, long-period earthquakes, harmonic tremor, and tremor associated with emissions. Ash-and-gas plumes were...

The Instituto Geof�sico-Escuela Polit�cnica Nacional (IG-EPN) reported that the eruption continued at Sangay during 8-14 April. Seismic data was not available due to transmission problems. Daily ash-and-gas plumes visible in webcam views, satellite images, and reported by the Washington Volcanic Ash...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity continued at Semeru during 9-14 April, with daily eruptive events recorded by the seismic network. Daily white-to-gray and gray ash plumes were visible generally rising 300-2,500 m above the summit and drifting in mult...

The Kamchatkan Volcanic Eruption Response Team (KVERT) reported continuing eruptive activity at the lava domes along the N crater floor of Young Sheveluch (on the SW flank of Old Sheveluch) during 8-14 April. Growth continued along the N part of the main lava dome. An explosive event on 8 April prod...

The Japan Meteorological Agency (JMA) reported that eruptive activity at Suwanosejima's Ontake Crater continued during 3-10 April. Incandescence was observed nightly in webcam images. Eruptive events produced plumes that rose as high as 700 m above the crater rim. The Alert Level remained at 2 (the ...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported eruptive activity at Taal during 8-14 April. The seismic network recorded 1-7 daily volcanic earthquakes; additionally, there was a two-minute period of tremor on 10 April and another tremor period lasting one hour and 32 min...

The US Geological Survey reported that a 300-400 m long submarine plume of discolored water over Ahyi Seamount was visible in an 8 April satellite image. The last time a similar plume was visible in satellite imagery was on January 9, though persistent cloud cover and limited availability of high-qu...

The Alaska Volcano Observatory (AVO) reported that seismic activity, sulfur dioxide emissions, and thermal anomalies at the Atka volcanic complex had declined to background levels over the past few weeks. At 1547 on 13 April the Volcano Alert Level was lowered to Normal (the lowest level on a four-l...