Yellowstone Volcano Observatory monthly update September 2, 2025, 2:08 p.m. MDT https://ow.ly/F3T250WPSAw Video shows a small eruption of Black Diamond Pool in Biscuit Basin in August 12, 2025. Not a spectacular event, but what a sunset!!! AUGUST SUMMARY - background activity - 94 located earthquakes (Max=M3.7) - summertime pause in long-term subsidence - small Black Diamond Pool eruption on August 12 RECENT WORK AND NEWS Minor eruptions of Steamboat Geyser in Norris Geyser Basin remain muted, i

This month, #Yellowstone Volcano Observatory Scientist-in-Charge Mike Poland reports from the site of a 3000-year-old hydrothermal explosion crater on the north side of Yellowstone Lake. He describes this underappreciated volcanic hazard before reviewing seismicity and deformation that occurred in the Yellowstone region during the month of August. Geyser activity is also featured, with a short video (recorded by Yellowstone National Park scientist Stan Mordensky) showing the eruption of Gantess

99K views · 1.9K reactions | Small eruption from Black Diamond Pool,...

Yellowstone Volcano Observatory monthly update July 1, 2025, 10:27 a.m. MDT https://ow.ly/NmoN50WjbVj SUMMARY Yellowstone Caldera activity remains at background levels, with 60 located earthquakes in June (largest = M2.7). Deformation measurements indicate that the annual summertime pause in long-term caldera subsidence started in June. Another small eruption of Black Diamond Pool in Biscuit Basin was recorded by a webcam on June 12 at 6:25 a.m. MDT (see attached video). RECENT WORK AND NEWS Min

Mike Poland, scientist-in-charge of the Yellowstone Volcano Observatory, describes activity at Yellowstone in this monthly update for August 1, 2022. The August 1 update comes to you from beautiful Mammoth Hot Springs in Yellowstone National Park. Tens of millions of years ago, this area was a shallow inland sea. The bedrock geology includes sandstones and slates, and even limestones composed of the shells of small marine organisms that accumulated over time. This area is also a zone of persiste