Latest Volcanic Activity

The US Geological Survey reported that small plumes of discolored water around the Ahyi Seamount had been intermittently identified in satellite images over the last few months, though recent ones had more discrete plume shapes suggesting more vigorous activity. Plumes on 1, 7, and 11 July drifted l...

The Alaska Volcano Observatory (AVO) reported that a small phreatic explosion originating at Korovin?s summit crater lake within the Atka Volcanic Complex was detected in seismic and infrasound data at 0355 on 16 July. No emissions were identified in satellite images, but regional weather clouds obs...

The Sezione di Catania - Osservatorio Etneo (INGV) reported eruptive activity at Etna?s summit craters during 13-19 July characterized by gas emissions rising along the fissure between Voragine Crater (VOR) and Northeast Crater (NEC), gas emissions rising from Southeast Crater, and explosive activit...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that an eruption at Krakatau continued during 16-22 July. White, gray, and/or black ash plumes rose as high as 200 m above the summit and drifted in multiple directions during 16 and 19-20 July. Incandescence was visible at night on...

The Japan Meteorological Agency (JMA) reported that further analysis of seismic data at Kuchinoerabujima from 9 July and results from field visits indicated that there likely was no increase in volcanic unrest. At 1550 on 17 July the Alert Level was lowered to 1 (on a scale of 1-5). Source: Japan Me...

The Japan Meteorological Agency (JMA) reported ongoing eruptive activity at Minamidake Crater (Aira Caldera?s Sakurajima volcano) during 13-20 July. Volcanologists conducted a field survey on 13 July and measured high sulfur dioxide emissions, averaging 2,200 tons per day. That same day ash plumes r...

The Wellington Volcanic Ash Advisory Center (VAAC) reported that ash-and-gas plumes at Ambae were identified in satellite and webcam views during 15 and 18-20 July rising 2.7-4.3 km (9,000-14,000 ft) a.s.l. and drifting SE, S, and SW. The plumes were brown on 19 July. The same day some flights were ...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Dukono continued during 16-22 July. Daily white plumes rose as high as 200 m above the summit and drifted in multiple directions. At 0650 on 16 July a white-and-gray ash plume rose 2.1 km above the summit a...

The Alaska Volcano Observatory (AVO) reported that slow lava effusion continued to feed a thick flow in Great Sitkin?s summit crater during 15-22 July. The flow advanced ESE based on radar satellite data. Seismicity was minor and likely associated with rockfalls on the growing dome. Elevated surface...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity at Ibu continued during 16-22 July, with daily eruptive events recorded by the seismic network. Daily gray or white-to-gray ash plumes rose 200-800 m above the summit and drifted E, NE, and NW. Incandescence at the sum...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported continuing eruptive activity at Kanlaon during 16-22 July. The seismic network recorded 8-36 daily volcanic earthquakes; the counts included 1-3 daily periods of tremor on most days, lasting 28 minutes to four hours and 43 mi...

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 15-22 July. Gas plu...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity continued at Lewotobi Laki-Laki during 16-22 July. Multiple daily gray ash plumes rose 200-1,600 m above the summit and drifted in various directions. Incandescence in the plume was visible in a webcam image a...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported ongoing eruptive activity at Lewotolok during 16-22 July. Daily white plumes rose as high as 200 m above the summit. Gray ash plumes rose 500-600 m above the summit and drifted W, SW, and SE during 16-17 July. A nighttime webcam ima...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption at Mayon continued during 16-22 July, characterized by lava effusion, periodic pyroclastic density currents (PDCs), incandescent rockfalls, and occasional ash-and-gas plumes. Emissions were visible daily ris...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption at Merapi (on Java) continued during 16-22 July with daily lava avalanches produced by the active lava dome on the upper SW flank. There were 8-14 daily lava avalanches that traveled as far as 2 km down the Sat/Put...

The Servicio Geologico Colombiano (SGC) reported ongoing low-level eruptive activity at Purac� during 14-20 July. Seismic activity associated with rock fracturing processes continued at similar levels compared to the previous week with signals mainly located between Piocollo and Purac� volcanoes at ...

The Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA) reported minor eruptive events at Rinc�n de la Vieja during 16-22 July. At around 2103 on 19 July a phreatic eruption lasting 30 seconds generated lahars on the N flank. At 0115 on 23 July seismic and acou...

The Instituto Geof�sico del Per�?s (IGP) Centro Vulcanol�gico Nacional (CENVUL) reported continuing eruptive activity at Sabancaya during 13-19 July. The seismic network detected 47 seismic events related to the movement of magmatic fluids, along with additional earthquakes indicating rock fracturin...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity continued at Semeru during 16-22 July, with daily eruptive events recorded by the seismic network. White-to-gray or gray ash plumes rose 500-1,100 m above the summit and drifted N, NE, SE, and S on most days. Two pyroc...

The Kamchatkan Volcanic Eruption Response Team (KVERT) reported continuing lava effusion and explosive activity at the lava domes along the N crater floor of Young Sheveluch (on the SW flank of Old Sheveluch) during 16-22 July. A thermal anomaly was identified in satellite images on all or most days...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported eruptive activity at Taal during 16-22 July. The seismic network recorded 0-10 daily volcanic earthquakes during 16-21 July, including daily periods of volcanic tremor that lasted as short as one minute to as long as eight ho...