There have been a number of recent times where in the lower 48 states, a volcano underwent an episode of unrest or experienced an intrusion of magma that largely went under the radar. This included at Oregon's Three Sisters volcano in 2004, Washington's Mount Baker volcano in 1975, and California's Mammoth Mountain in 1989. Today's videos is dedicated to discussing the 5 strongest episodes of unrest lower 48 volcanoes had which were not followed by a volcanic eruption. However, with the exception of the number one entry in this video, none of these volcanoes were ever seriously close to erupting; just slightly closer than they were during normal quiet periods. 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 Sources/Citations: [1] U.S. Geological Survey [2] Cascades Volcano Observatory 0:00 Closest to Erupting 0:28 Three Sisters Volcano (2004) 1:39 Mammoth Mountain (1989) 2:48 Long Valley Caldera (1982) 3:37 Mt Baker (1975) 4:48 Mono Lake (1890) 5:23 Final Thoughts