https://www.greenmatters.com/pn/a-chicago-sized-bulge-has-appeared-near-yellowstones-volcano-and-scientists-say-its-growing

Does the wide bulge indicate that an eruption is on the horizon? Experts have slashed the speculations without any fluff. “That doesn't mean that the volcano is about to erupt. It’s Yellowstone being Yellowstone," Poland said. The reply makes perfect sense, given that the ground uplift has happened a few times before. Under the outlet's Facebook post, people reacted similarly to the news, not making too much of a big deal out of the development. "Is it time for the annual Yellowstone is gonna erupt stories again?" one person wrote. "A whole inch, huh? Wowsers," another wrote, sarcastically. "Not a bad thing. Upheavals in Yellowstone happen all the time," a third added. The slight movement of the surface above the dormant volcano of Yellowstone, a deformation known as the Norris Uplift Anomaly, occurred once between 1996 and 2000 near Norris Geyser Basin. The instance repeated in 2004 and then again in 2020.

(http://www.autoadmit.com/thread.php?thread_id=5829523&forum_id=2...id.#49637777)