Yellowstone Explosion: Black Diamond Pool erupts twice in 2 days
Black Diamond Pool triggered a yellowstone explosion twice in two days at Yellowstone National Park, erupting on Tuesday, April 28, and again on Wednesday, April 29, according to the USGS. The second eruption was the more dramatic of the two and sent muddy water and steam surging toward a nearby camera.
That week of activity stood out because the Wednesday eruption was still smaller than the July 23, 2024 blast, when visitors ran from the area and wooden walkways were damaged. Black Diamond Pool sits about 2 miles from Old Faithful geyser.
Black Diamond Pool eruptions
Black Diamond Pool is a large, murky, blue hot spring with an average temperature of 148.5°F and a history of sporadic eruptions. The pool erupted in 2006 after an earthquake, according to the National Park Service, and its recent activity added another recorded episode to that pattern.
The two eruptions came close together, with the Tuesday event followed by a stronger Wednesday burst. The difference between those events and the July 23, 2024 eruption is the scale: this week’s second eruption was more dramatic than the first, but not nearly as large as the 2024 blast.
Old Faithful area
Black Diamond Pool is part of Yellowstone’s hydrothermal system, where trails and boardwalks guide visitors through areas the National Park Service treats as unpredictable and scalding. Hot springs form when superheated water rises to the surface, cools, and is replaced by even hotter water from below.
When that circulation is disrupted, pressure can build and sometimes cause an eruption. At Black Diamond Pool, the result this week was a burst visible to a nearby camera and another reminder that one of the park’s most watched hydrothermal features can change quickly.
For visitors near Old Faithful, the practical takeaway is straightforward: stay on the designated trails and boardwalks the park has placed in hydrothermal areas, especially around features with a record of sudden eruptions.
July 23, 2024 eruption
The July 23, 2024 eruption remains the benchmark for the area because it sent visitors running and damaged wooden walkways. This week’s pair of eruptions did not match that scale, but they showed that Black Diamond Pool is still active and capable of changing from one day to the next.
