On July 23, 2024, at around 10:00 AM MST, a small hydrothermal explosion occurred in Yellowstone National Park’s Biscuit Basin thermal area. This event took place approximately 2.1 miles northwest of Old Faithful and was captured on video by several visitors. The explosion originated near Black Diamond Pool, resulting in damage to the boardwalk. Fortunately, there were no reported injuries.
For visitor safety, Biscuit Basin, including the parking lot and boardwalks, has been temporarily closed. However, the Grand Loop road remains open. Yellowstone National Park geologists are currently investigating the incident.
Hydrothermal explosions, caused by water suddenly flashing to steam underground, are relatively common in Yellowstone. Previous notable events include an explosion at Porkchop Geyser in 1989 and another small event in Norris Geyser Basin on April 15, 2024. A similar explosion also occurred in Biscuit Basin on May 17, 2009.
Monitoring data indicates no changes in the Yellowstone region’s volcanic activity, which remains at normal background levels. These hydrothermal explosions are not indicative of impending volcanic eruptions and are not caused by magma rising to the surface.
For more information on hydrothermal explosions, visit the USGS website. Additional updates will be provided as more information becomes available.
The Yellowstone Volcano Observatory (YVO) continues to monitor volcanic and earthquake activity in Yellowstone National Park to ensure public safety. YVO is part of a collaboration that includes several universities and geological surveys from surrounding states.
