News and Updates on Volcanoes and Earthquakes

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that an eruption at Lewotolok was ongoing during 23-29 April. White steam-and-gas plumes rose as high as 100 m above the summit of the cone and drifted E and SE. Nighttime webcam images showed incandescent material being ejected above the summit. ... Leggi tutto

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Lewotobi Laki-laki continued during 23-29 April. Gray or gray-to-black ash plumes rose 500 m above the summit, to as high as 4 km above the summit, and drifted multiple directions during 24-28 April. Though the view was often obscured due to weather or volcanic plumes, incandescence around the upper flanks was visible in a webcam image at 0215 on 25 April. ... Leggi tutto

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported continuing eruptive activity at Kanlaon during 22-28 April. The seismic network recorded 7-36 daily volcanic earthquakes and one period of volcanic tremor (10 minutes long) on 28 April. Daily sulfur dioxide emissions ranged from 1,693 to 2,736 tonnes per day. ... Leggi tutto

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption at Ibu continued during 23-29 April. Dense gray ash plumes rose 400-700 m above the summit and drifted E and NE on most days. Eruptive events were recorded by the seismicity network on 24 and 26 April, though weather conditions prevented visual observations. ... Leggi tutto

The Alaska Volcano Observatory (AVO) reported that slow lava effusion continued to feed a thick flow in Great Sitkin's summit crater during 23-29 April. Small daily earthquakes were detected by the seismic network. Weather clouds often obscured satellite and webcam views of the volcano. ... Leggi tutto

On 24 April the Vanuatu Meteorology and Geohazards (VMGD) reported that unrest continued at Gaua. Sulfur dioxide emissions were identified in satellite images during 2-3 and 6-8 April, and steam and/or gas emissions from the vent were visible in images on 17 April. A low-level thermal anomaly was identified in satellite images on 4, 11, and 19 April, indicative of increased surface temperatures. ... Leggi tutto

The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported a few explosions and the ejection of incandescent material at Fuego during 22-29 April. White steam-and-gas plumes rose as high as 100 m above the summit during the week. At night a few incandescent blocks occasionally collapsed and formed minor avalanches. ... Leggi tutto

The Sezione di Catania - Osservatorio Etneo (INGV) reported continuing activity at Etna during 21-27 April, characterized by Strombolian activity with lava overflows at SE Crater and gas emissions at Bocca Nuova Crater, NE Crater, and Voragine. Strombolian activity at SE Crater began at 2000 on 22 April that involved at least three vents and was followed by lava overflowing onto the SE flank. At 2145 a second lava flow descended the S flank. ... Leggi tutto

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption at Dukono continued during 23-29 April. White-and-gray ash plumes rose 600-1,100 m above the crater rim and drifted E on most days; no plumes were visible on 24 April. The Alert Level remained at Level 2 (on a scale of 1-4) and the public was warned to stay 4 km away from the Malupang Warirang Crater. ... Leggi tutto

A small, short-lived explosion from the summit of Korovin, one of the volcanoes at the Atka volcanic complex, was detected at 1034 on 25 April, prompting the Alaska Volcano Observatory (AVO) to raise the Volcano Alert Level to Advisory (the second lowest level on a four-level scale) and the Aviation Color Code to Yellow (the second lowest color on a four-color scale). High weather clouds obscured views at the time of the explosion, preventing confirmation of the event in satellite observations. Similar past events at the Atka complex did not result in ash emissions of noticeable ashfall. ... Leggi tutto