The alert level was recently raised at a volcano which has not erupted in more than 5,000 years. Specifically, at the Nevado de Longaví volcano within Chile. This change was made due to an ongoing earthquake swarm, which even involved a magnitude 4 range earthquake. Today's video will discuss the ongoing unrest, and what we do know about this particular volcano through the knowledge, analysis, and opinion of a geologist. Thumbnail Photo Credit: This work "LongaviVolcano4", is a derivative of (resized, cropped, sharpened image, increased image color saturation, text overlay, GeologyHub made graphics overlay (the image border & the GeologyHub logo)) from "File:Nevados del longavi.JPG", by: Dentren, 2009, Posted on Wikimedia Commons at: https://upload.wikimedia.org/wikipedia/commons/archive/7/73/20170618215904%21Nevados_del_longavi.JPG, Wikimedia profile link: https://commons.wikimedia.org/wiki/User:Dentren, CC BY-SA 3.0. "LongaviVolcano4" is used & licensed under CC BY-SA 3.0 by Youtube.com/GeologyHub Longavi is not actively erupting, or deemed to have the imminent potential to erupt in the opinion of YouTube.com/GeologyHub as of May 27th 2026. 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 2.0: https://creativecommons.org/licenses/by/2.0/legalcode CC BY-SA 3.0: https://creativecommons.org/licenses/by-sa/3.0/legalcode CC BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] Sernageomin [2] SENAPRED [3] Selles, Daniel & Dungan, M. & Langmuir, Charles & Rodriguez, Carolina & Leeman, William. (2022). Magma and Mineral Composition Response to Increasing Slab-Derived Fluid Flux: Nevado de Longaví Volcano, Southern Chilean Andes. Frontiers in Earth Science. 10. 10.3389/feart.2022.846997. CC BY 4.0. [4] 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. [5] 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 and are not from the Nevado de Longaví volcano are sourced from the LaMEVE database (British Geological Survey © UKRI), https://www2.bgs.ac.uk/vogripa/view/controller.cfc?method=lameve, Used with Permission 0:00 Alert Level Raised 0:24 Nevado de Longavi 1:15 Seismic Activity 3:13 Holocene Eruptions 4:10 Hypothetical Lahar Hazard