News and Updates on Volcanoes and Earthquakes

The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported ongoing, high-level eruptive activity at Santa Maria's Santiaguito dome complex during 2-8 April with continuing lava extrusion at Caliente dome. Daily explosions, as many as five per hour when reported, generated gas-and-ash plumes that rose as high as 1.2 km above the dome and possibly drifted as far as 40 km N, NW, W, and SW. Effusion of blocky lava and collapses of material produced block avalanches that were sometimes heard several kilometers away; these mainly descended the SE, S, SW, and W flanks. ... Read all

The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that moderate levels of eruptive activity continued at Sangay during 1-8 April. The seismic network recorded 36-185 daily explosions. Weather clouds obscured views most of the week, but on most of the days several gas-and-ash plumes were visible rising as high as 2 km above the summit and drifting SW. ... Read all

The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that eruptive activity continued at Reventador during 1-8 April. Seismicity included 52-127 daily explosions, long-period earthquakes, harmonic tremor, and tremor associated with emissions. Multiple daily ash-and-gas plumes rose as high as 1.3 km above the crater rim and drifted mainly NW, W, and SW. ... Read all

The Balai Penyelidikan dan Pengembangan Teknologi Kebencanaan Geologi (BPPTKG) reported that the eruption at Merapi (on Java) continued during 28 March-4 April. Seismicity was at higher levels than the previous week. The SW lava dome produced 28 lava avalanches that traveled as far as 1.8 km SW down the Bebeng drainage, 50 that traveled as far as 1.8 km SW down the Krasak drainage, and 37 that traveled as far as 1.8 km W down the Sat/Putih drainage. ... Read all

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Marapi's Verbeek Crater (on Sumatra) continued during 2-8 April. An eruptive event at 2233 on 1 April was recorded by the seismic network but not observed. At 0625 on 2 April a gray ash plume rose 350 m above the summit and drifted NE and at 1604 a dense gray ash plume rose 1 km above the summit and drifted E. ... Read all

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that an eruption at Lewotolok was ongoing during 2-8 April. White steam-and-gas plumes rose as high as 120 m above the summit of the cone and drifted NE, E, and SE on most days; white-and-gray plumes rose 30 m and drifted E on 3 April. Nighttime webcam images accompanying the daily reports often showed incandescent material being ejected above the summit, as far as 600 m from the vent during 3-4 April. ... Read all

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Lewotobi Laki-laki continued during 2-8 April. Dense gray ash plumes rose 300-1,200 m above the summit during 4-6 and 8 April and mainly drifted N, NE, and E, and occasionally SW. Minor incandescent at the summit was occasionally visible in webcam images posted with the daily reports. ... Read all

The Hawaiian Volcano Observatory (HVO) reported that the eruption within Kilauea's Kaluapele summit caldera, from vents along the SW margin of Halema'uma'u Crater, continued at variable levels during 1-8 April. Weak spattering at the N vent that had begun on 31 March changed to low lava fountaining and lava pond activity that ceased at 2122 on 1 April. Lava fountaining began at the S vent around 0800 on 1 April and rapidly increased in height, with fountains rising to 245 m. ... Read all

The Alaska Volcano Observatory (AVO) reported that during 6-7 and 9 April strong winds in the vicinity of Katmai and the Valley of Ten Thousand Smokes dispersed unconsolidated ash up to 1.5-1.8 km (5,000-6,000 ft) a.s.l. to the SE. The ash was originally deposited during the Novarupta-Katmai eruption in 1912. ... Read all

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption at Ibu continued during 2-7 April. Daily dense gray ash plumes rose 300-1,000 m above the summit and drifted in multiple directions. Incandescence at the summit was visible in several webcam images posted with the reports. ... Read all