In brief
US Geological Survey experts reported a notable mud eruption at Black Diamond Pool, part of Yellowstone National Park, on Saturday morning. This eruption, visibly striking against the snowy backdrop, adds to a series of 'dirty eruptions' which have been occurring sporadically since a significant hydrothermal explosion in July 2024. Enhanced monitoring tools, including a new camera and seismic station, are providing better insights into these geological phenomena.
“Kablooey!”
That's how U.S. Geological Survey (USGS) volcanic experts described a spectacular muddy eruption at Black Diamond Pool on Saturday morning. Videos shared on social media revealed a dramatic spray of mud rising from the pool just before 9:23 a.m. in Biscuit Basin, a location situated between Yellowstone’s notable sites, Old Faithful and Grand Prismatic.
Previous eruptions in the area have largely remained unseen due to timing or ice obscuring visibility; however, this particular eruption was a rare opportunity for spectators. The USGS indicated that the Black Diamond Pool was previously the site of a serious hydrothermal explosion in July 2024, which hurled rocks and mud hundreds of feet into the air, compromising the safety of nearby boardwalks and leading to area closures.
Since that time, eruptions classified as 'dirty' have been intermittently observed, reaching heights of approximately 40 feet. Researchers have responded by installing advanced monitoring equipment, including an improved camera and a new seismic and acoustic monitoring station, this past summer. These tools, along with temperature sensors maintained by the Yellowstone National Park Geology Program, will aid in the detection and characterization of these phenomena.
The Yellowstone Volcano Observatory webcam captured this latest eruption, allowing viewers a front-row seat to nature's spectacle amidst the winter wonderland of Yellowstone.
The USGS commented on the event, stating, “We got a nice clear view of one of these dirty eruptions under bright blue skies, with the surroundings covered in snow (ah, winter in Yellowstone!),” illustrating the remarkable activity that has been ongoing at this location over the past 19 months.
Experts assert that while these eruptions are fascinating, there is currently no identifiable pattern or warning signs leading up to them. Yellowstone National Park remains a site of unparalleled geothermal activity, housing over 10,000 hydrothermal features, including more than 500 geysers.
