A new intrusion of magma appears to be ongoing at a Sumatran volcano which has not erupted in nearly a century. Meanwhile, in Russia, a lava field is continuing to expand at the Krasheninnikov volcano. And, in Alaska, two ash plumes were generated within Katmai National Park despite there not being a volcanic eruption there. Today's video will discuss these stories through the opinion and analysis of a geologist and list the 42 world volcanoes that are actively erupting. Note: This video's thumbnail image shows a prior photo of the erupting Fuego volcano in Guatemala. Also, the magma intrusion in Sumatra is not confirmed, but merely an interpretation of seismic activity near the Bur ni Telong volcano. NASA EOSDIS Worldview satellite imagery Copyright © 2012-2025 United States Government as represented by the Administrator of the National Aeronautics and Space Administration. All Rights Reserved. Associated license for NASA EOSDIS Worldview: https://github.com/nasa-gibs/worldview/blob/main/LICENSE.md We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Observing System Data and Information System (EOSDIS). We acknowledge the use of imagery from the NASA Worldview application (https://worldview.earthdata.nasa.gov/), part of the NASA Earth Observing System Data and Information System (EOSDIS). If you would like to support this channel, consider using one of the following links: (Patreon: http://patreon.com/geologyhub) (YouTube membership: https://www.youtube.com/channel/UCYeGh5VML5XPr5jYnzh3J6g/join) (Gemstone & Mineral Etsy store: http://prospectingarizona.etsy.com) (GeologyHub Merch Etsy store: http://geologyhub.etsy.com) Google Earth imagery used in this video: ©Google & Data Providers This video is protected under "fair use". If you see an image and/or video which is your own in this video, and/or think my discussion of a scientific paper (and/or discussion/mentioning of the data/information within a scientific paper) does not fall under the fair use doctrine, and wish for it to be censored or removed, contact me by email at [email protected] and I will make the necessary changes. Various licenses used in sections of this video (not the entire video, this video as a whole does not completely fall under one of these licenses) and/or in this video's thumbnail image (and this list does not include every license used in this video and/or thumbnail image): Public Domain: https://creativecommons.org/publicdomain/mark/1.0/ CC BY 3.0 NZ: https://creativecommons.org/licenses/by/3.0/nz/legalcode CC BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] NASA Worldview, EOSDIS Worldview, (Satellite imagery: NOAA-21 / VIIRS, Aqua / MODIS), (Thermal signatures: Terra / MODIS, NOAA-20 / VIIRS, Aqua / MODIS), at https://worldview.earthdata.nasa.gov/ [2] VEIs, dates/years, composition, tephra layer name, DRE estimates, and bulk tephra volume estimates for volcanic eruptions shown in this video which were assigned a VEI 4 or larger are sourced from the LaMEVE database (British Geological Survey © UKRI), https://www2.bgs.ac.uk/vogripa/view/controller.cfc?method=lameve, Used with Permission [3] Source of Volcanic Explosivity Index (VEI) methodology and criteria: Newhall, C. G., and Self, S. (1982), The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism, J. Geophys. Res., 87(C2), 1231–1238, doi:10.1029/JC087iC02p01231. Accessed / Read by Youtube.com/GeologyHub on Oct 5th, 2022. [4] Geonet (New Zealand) [5] CIVISA (Azores) [6] Rabaul Volcano Observatory [7] Japanese Meteorological Agency [8] Vedur.is / Iceland Met Office [9] PVMBG (Indonesia) (Pusat Vulkanologi dan Mitigasi Bencana Geologi) (Indonesia) [10] Hawaiian Volcano Observatory [11] Vanuatu Meteorology and Geo-hazards Department [12] Alaska Volcano Observatory [13] Tonga Geological Services [14] Observatorio Vulcanológico y Sismológico de Costa Rica (OVSICORI) [15] Sernageomin [16] Vanuatu Meteorology & Geo-Hazards Department [17] Servicio Geológico Colombiano [18] Instituto Geofísico Escuela Politécnica Nacional [19] U.S. Geological Survey [20] Phivolcs 0:00 Santa Maria Erupts 0:41 This Week's Top Stories 1:23 Bur ni Telong Unrest 2:56 Krashenninikov Eruption 4:08 Alaska Ash Plume 4:50 List of Erupting Volcanoes