
Yellowstone's Biscuit Basin Closed After Hydrothermal Explosion Launches Debris into Air
Yellowstone's Biscuit Basin closed after hydrothermal explosion launches debris. No injuries, but more blasts possible. Park known for thermal activity.

In light of the recent hydrothermal explosion that occurred at Yellowstone National Park, specifically in the Biscuit Basin area, park officials have announced the indefinite closure of the affected zone for the safety of visitors. The explosion, which took place at approximately 10 a.m., resulted in the ejection of steam and debris into the air, causing widespread concern among onlookers. While no injuries were reported, the dramatic event was captured on video, with some witnesses seen fleeing the scene in the aftermath of the blast.
Geological Survey Findings
According to the U.S. Geological Survey, the hydrothermal explosion was triggered by the abrupt conversion of water into steam within the shallow hydrothermal system beneath the Black Diamond Pool in the Biscuit Basin. The violent nature of the explosion has led to concerns about the potential for similar incidents in the foreseeable future. The USGS issued a statement indicating that due to recent alterations in the hydrothermal plumbing system, there is a continued risk of small explosions resulting from boiling water in the Biscuit Basin area, which may persist for several days to months.
Closure and Safety Measures
In response to the ongoing hazard, park authorities have declared the complete closure of the Biscuit Basin for the remainder of the 2023 season, with the intention of reassessing the situation before considering its reopening. However, it is important to note that the Grand Loop Road remains accessible to vehicles, and other thermal basins in the vicinity are not affected by the closure and remain open to the public.
Impact and Debris
The ramifications of the hydrothermal explosion were substantial, with the geyser ejecting plumes of steam and debris hundreds of feet into the air. Furthermore, rocks as large as grapefruits were discovered at a significant distance from the blast site, underscoring the sheer force of the explosion. The destructive effects also led to the obliteration of a section of the boardwalk, with some blocks in the immediate vicinity of the explosion measuring up to 3 feet (1 meter) in width and weighing hundreds of pounds, as detailed in the USGS statement.
Frequency of Hydrothermal Explosions
Yellowstone National Park is no stranger to hydrothermal explosions, given its renowned geothermal features. Park officials noted that such occurrences take place several times a year, with the USGS confirming that they are relatively common, albeit often transpiring in remote backcountry areas, away from the presence of park visitors.
As the temporary closure of the Biscuit Basin takes effect, visitors are urged to adhere to all safety protocols and warnings issued by the park authorities. It is imperative to prioritize the well-being of all individuals within the park by maintaining a vigilant stance and promptly reporting any unusual geothermal activities or signs of potential disturbances. By fostering a collective commitment to safety and awareness, both park management and visitors can work in unison to uphold a secure environment within Yellowstone National Park.
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