News and Updates on Volcanoes and Earthquakes

The explosive eruption at the volcano goes on. ... Leer todo

The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported high levels of eruptive activity at Sangay during 13-20 May. The seismic network recorded 98-194 daily explosions. Ash-and-gas plumes were observed in webcam and/or satellite images on most days rising as high as 2 km above the summit and drifting in multiple directions. ... Leer todo

The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that eruptive activity continued at Reventador during 13-20 May. Seismicity included 68-106 daily explosions, long-period earthquakes, harmonic tremor, and tremor associated with emissions. Multiple daily ash-and-gas plumes rose 200-2,000 m above the crater rim and drifted in multiple directions. ... Leer todo

Escalating seismicity coupled with minor inflation at Ontakesan in January caused the Japan Meteorological Agency (JMA) to raise the Alert Level to 2 (on a scale of 1-5). Beginning in February deformation stagnated and only a few volcanic earthquakes were recorded by the seismic network through 20 May. The Alert Level was lowered to 1 at 1100 on 20 May. ... Leer todo

The Servicio Geológico Colombiano's (SGC) Observatorio Vulcanológico y Sismológico de Manizales reported that eruptive activity at Nevado del Ruiz continued during 13-19 May. Seismic data indicated that events associated with fluid movement decreased in both number and intensity compared to the previous week. Seismicity associated with rock fracturing increased in both number and intensity compared to the previous week. ... Leer todo

The Darwin Volcanic Ash Advisory Centre (VAAC) reported that an ash plume from Manam was identified in a satellite image at 1020 on 16 May drifting SE. The plume had dissipated by 1220. ... Leer todo

The Japan Meteorological Agency (JMA) reported ongoing eruptive activity at Minamidake Crater (Aira Caldera's Sakurajima volcano). No eruptive events were recorded during 5-15 May, though inflation continued to be detected in deformation data, notably starting at 2000 on 12 May. Sulfur dioxide emissions were slightly low, averaging 300 tons per day (t/d); the last measurement was 900 t/d on 2 May. ... Leer todo

A spectacular eruption took place from the volcano yesterday. ... Leer todo

On 13 May GeoNet reported near-continuous emissions of gas, steam, and minor amounts of ash at Whakaari/White Island based on visual observations during overflights, visual observations from the Bay of Plenty coast, and from webcams located at Whakatane and Te Kaha. Additionally, minor amounts of ash were identified in satellite data as reported by the Wellington Volcanic Ash Advisory Center (VAAC). As seen from the coast, the plume occasionally rose 300-600 m above the summit during calm weather conditions, but during windier conditions the plume was lower and was visible downwind for tens of kilometers. ... Leer todo

The Japan Meteorological Agency (JMA) reported that eruptive activity at Suwanosejima's Ontake Crater continued during 5-12 May. Incandescence was observed nightly in webcam images. No explosions were detected, though plumes from eruptive events rose 900 m above the crater rim. ... Leer todo