A new hydrothermal feature has appeared at Yellowstone National Park, according to a report by park scientist Jefferson Hungerford. The feature was detected on August 5 in the Roadside Springs thermal area, which is located near a rhyolite lava flow. Initial readings showed the feature had a temperature of 77°C (171°F), and a thin layer of grey clay covered its surface.
This discovery echoes an earlier event that occurred on March 10, 2003, on the other side of the same lava flow, near Nymph Lake. Hungerford notes that while the activity has persisted, it is currently less energetic than when it first formed.
The feature remained prominent in the fall but disappeared as winter began to set in. While the feature remains active, steam release has decreased. The fate of the strong steam plume, which was visible during chilly mornings, remains uncertain and will depend on the summer of 2025.
Source: https://buckrail.com/new-hydrothermal-feature-popped-up-in-yellowstone-last-year