![]() ![]() Each day, seismic stations recorded 241-339 rockfall events and 1-17 PDC events, each lasting up to five minutes. Average daily measurements of sulfur dioxide emissions fluctuated between 507 and 925 tonnes per day. Daily steam-and-gas emissions rose as high as 800 m above the crater and drifted SW, WSW, and W. The collapse material traveled as far as 3.3 km away from the crater. The dome remained unstable and produced incandescent rockfalls and pyroclastic density currents (PDCs, or pyroclastic flows). Previously reported maximum lava flow lengths of 2.5 km along the Mi-isi and 1.8 km along the Bonga drainages were revised on 24 June to 1.3 km and 1.2 km, respectively by 27 June the Mi-isi flow was 1.6 km long. Slow aseismic lava effusion few a growing lava dome in the summit crater and fed lava flows that advanced down the Mi-isi (S) and Bonga (SE) drainages. ![]() PHIVOLCS reported that eruptive activity continued at Mayon during 20-27 June. Mayon | 21 June-27 June 2023 | New Activity / Unrest Cite this Report Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM) The volcano Alert Level remained at 2 (on a scale of 1-4) and the public was reminded not to approach Tompaluan Crater within a radius of 1.5 km. The plumes had variable densities, rose as high as 300 m above the crater rim, and were white on most days plumes were described as white and gray on 21 June. PVMBG reported continuing daily emissions at Lokon-Empung during 21-27 June. Lokon-Empung | 21 June-27 June 2023 | New Activity / Unrest Cite this Report Source: Japan Meteorological Agency (JMA) The public was warned that ejected blocks and pyroclastic flows may impact areas within 2 km of Shindake. The Alert Level was raised to 2 (on a scale of 1-5) on 26 June due to the increased seismicity. No changes at the geothermal area on the W flank of Shindake were observed during a field inspection during 19-20 June. Sulfur dioxide emissions were low, and typical white emissions rose 100-500 m above Shindake on 13 and 25 June. A total of 100 shallow volcanic earthquakes were recorded during 17-26 June with most epicenters located near Furudake Crater and some located near Shindake Crater (just N of Furudake). JMA reported that the number of volcanic earthquakes increased at Kuchinoerabujima. Kuchinoerabujima | 21 June-27 June 2023 | New Activity / Unrest Cite this Report Source: Kamchatkan Volcanic Eruption Response Team (KVERT) The Aviation Color Code was raised to Yellow (the second lowest level on a four-color scale). KVERT reported that a minor Strombolian eruption began at Klyuchevskoy at 2323 on 22 June and a bright thermal anomaly was visible in satellite images. Klyuchevskoy | 21 June-27 June 2023 | New Activity / Unrest Cite this Report Smithsonian / USGS Weekly Volcanic Activity Report for the week of 21 June-27 June 2023Īll times are local unless otherwise stated. ![]()
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