News and Updates on Volcanoes and Earthquakes

The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Sangay during 11-17 June. The seismic network recorded 122-217 explosions each day during 10-15 June, no explosion count was reported on 16 June, and on 17 June there were 64 explosions. Daily ash-and-gas plumes were observed in webcam and/or satellite images rising as high as 2.5 km above the summit and drifting downwind, though weather clouds often obscured views. ... Leggi tutto

The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that eruptive activity continued at Reventador during 10-17 June. Seismicity included 51-94 daily explosions, long-period earthquakes, harmonic tremor, and tremor associated with emissions. Multiple daily ash-and-gas plumes rose 400-1,600 m above the crater rim and drifted downwind. ... Leggi tutto

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption continued at Raung during 11-17 June. Plumes were reported on 11 June reaching 750 m above the summit and drifting E, NE, and W. On 12 June PVMBG issued a special report noting that ongoing eruptions had increased in intensity and that ash plumes were rising approximately 1,000 m above the summit. ... Leggi tutto

The Centro Nacional de Prevención de Desastres (CENAPRED) reported that eruptive activity continued at Popocatépetl during 11-17 June. Between 15 and 73 low-energy, long-period (LP) seismic events occurred daily, accompanied by primarily gas and steam emissions. At 0951 on 11 June, the Washington VAAC reported that ash was observed in GOES-19 satellite imagery rising to 5.8 km (19,000 ft) a.s.l. (approximately 400 m above the crater rim) and drifting WNW; activity ended by 1526. ... Leggi tutto

The Observatorio Vulcanológico y Sismológico de Costa Rica-Universidad Nacional (OVSICORI-UNA) reported continued activity at Poás during 10-17 June. Due to a sustained decrease in seismicity, a shift from inflation to deflation of the crater, gas compositions that appear less magmatic, and a lack of significant eruptions since 19 May, the Alert Level was lowered from 3 to 2 (the second lowest level on a four-level scale) and the Aviation Color Code was lowered from Orange to Yellow (the second lowest color on a four-color scale) on 13 June. Moderate emissions of ash, water vapor, and sulfur-rich gas continued during 11-17 June, primarily from vent A. ... Leggi tutto

The Balai Penyelidikan dan Pengembangan Teknologi Kebencanaan Geologi (BPPTKG) reported that the eruption at Merapi (on Java) continued during 11-17 June. The SW lava dome produced 27 lava avalanches that traveled as far as 2.km SW down the Bebeng drainage, 19 that traveled as far as 1.8 km SW down the Krasak drainage, and 18 that traveled as far as 2 km W down the Sat/Putih drainage. Seismicity increased relative to last week. ... Leggi tutto

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity at Marapi (on Sumatra) continued during 11-17 June. An eruptive event at 0745 on 17 June was recorded by the seismic network, though a plume was not visible. The Alert Level remained at 2 (on a scale of 1-4) and the public was warned to stay 3 km away from the active crater. ... Leggi tutto

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that an eruption at Lewotolok continued during 11-17 June. Gray or white-to-gray ash plumes rose 400-700 m above the summit of the cone and drifted primarily to the NW and W. Clear nighttime webcam images showed incandescent material at the summit cone, being ejected above the summit cone, and on the upper flanks. ... Leggi tutto

The Kamchatkan Volcanic Eruption Response Team (KVERT) reported that a bright thermal anomaly at Klyuchevskoy was identified in satellite images during 29-30 May and 2-4 June. The Far Eastern Branch of the Russian Academy of Sciences (FEB RAS) reported that acoustic signals from explosive activity was detected on 9 June. Ash plumes rose as high as 250 m above the summit on 9 and 11 June. ... Leggi tutto

The Hawaiian Volcano Observatory (HVO) reported that the eruption within Kilauea's Kaluapele summit caldera, characterized by episodic fountaining and intermittent spattering at two vents along the SW margin of Halema'uma'u Crater, continued at varying levels during 11-17 June. Over the night of 10-11 June there was incandescence, gas pistoning, lava spattering, and lava flows visible from the N vent, and gas emissions from both the N and S vents. Gas pistoning activity at the N vent intensified until a small sustained dome fountain at the N vent began to feed lava flows onto the crater floor at 1157 on 11 June; by 1300 the lava fountains were rising over 300 m. ... Leggi tutto