News and Updates on Volcanoes and Earthquakes

The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported that elevated eruptive activity at Fuego was characterized by explosions and ash plumes, incandescent material ejected above the summit, incandescent avalanches, and pyroclastic flows. The stronger activity began at around 0255 on 9 March with explosions detected in seismic and acoustic data and increasing thermal radiance at the summit detected in satellite data. Explosions ejected incandescent material onto the upper flanks on all directions and caused avalanches of incandescent material. ... Leggi tutto

On 3 March the Observatorio Vulcanológico y Sismológico de Costa Rica-Universidad Nacional (OVSICORI-UNA) reported that over the previous few days small collapses occurred from the inner SW wall of Turrialba's West Crater, in the same area that is sometimes incandescent. Material from the collapses was mostly deposited inside the crater, though some ash rose above the rim. At 0933 a small ash eruption that lasted for 15 seconds produced an ash-and-gas plume that rose 100 m and drifted SW. ... Leggi tutto

Another episode in the Halemaʻumaʻu crater floor commenced at 07:30 AM local time yesterday. ... Leggi tutto

On 27 February the Vanuatu Meteorology and Geohazards Department (VMGD) reported that activity at Yasur continued at a level of “major unrest,” as defined by the Alert Level 2 status (on a scale of 0-5). Satellite and webcam images indicated that explosions continued, producing emissions of gas, steam, and/or ash. Gas emissions were identified in satellite images, and seismic data confirmed continuing volcanic activity with explosions that were occasionally strong. ... Leggi tutto

The Instituto Geofísico del Perú (IGP) reported that a lahar carrying blocks descended the Volcánmayo drainage on the SE flank of Ubinas at 1727 on 26 February. The public was warned to stay away from the drainage and to avoid driving on the Querapi-Ubinas-Huarina highway. The Alert Level remained at Yellow (the second level on a four-color scale) and the public was warned to stay 2 km away from the crater. ... Leggi tutto

The Japan Meteorological Agency (JMA) reported that eruptive activity at Suwanosejima's Ontake Crater continued during 24 February-3 March. Incandescence was observed nightly in webcam images. An explosion at 0601 on 24 February generated an ash plume that rose 900 m above the crater rim and drifted SE. ... Leggi tutto

On 28 February the Alaska Volcano Observatory (AVO) reported that ongoing unrest at Spurr was characterized by elevated seismicity and continuing deformation. Seismicity remained elevated, though had slightly decreased during the past few days. The seismic network recorded over 70 earthquakes with most located beneath the summit and some located beneath Crater Peak. ... Leggi tutto

The Kamchatkan Volcanic Eruption Response Team (KVERT) reported that lava extrusion may have continued at Sheveluch's “300 years of RAS” dome on the SW flank of Old Sheveluch and at the Young Sheveluch dome during 20-28 February. Daily thermal anomalies over the domes were identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). ... Leggi tutto

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity continued at Semeru during 26 February-4 March, with daily eruptive events recorded by the seismic network. Daily white-and-gray or gray ash plumes rose 400-1,300 m above the summit and drifted in multiple directions. The Alert Level remained at 2 (the second lowest level on a scale of 1-4). ... Leggi tutto

The Instituto Geofísico del Perú (IGP) reported no explosions, thermal anomalies, or significant deformation at Sabancaya during 24 February-2 March. Gas-and-steam plumes rose as high as 700 m above the summit and drifted W, SW, and NW. Sulfur dioxide emissions were at moderate levels, averaging 216 tons per day. ... Leggi tutto