Calling all Citizen Scientists! Yellowstone and the U.S. Geological Survey (USGS) are seeking information regarding the hydrothermal explosion event that took place in Biscuit Basin on July 23rd, 2024.

Who can help:

  • People in Biscuit Basin or surrounding area who directly observed the event.
  • People who have photos or videos of Black Diamond Pool, Black Opal Pool, or Wall Pool during the period of July 16-July 23.

If you are in either of these groups and would like to help, please contact the Yellowstone Geology Program: yell_geology@nps.gov

Hydrothermal explosions are common, but not often witnessed. By sharing your observations and media, you can directly contribute to important scientific research on this underappreciated geologic hazard.

Today's Eruptions

View as
Geyser2025-02-16
No reports yet
Values for Old Faithful Area2025-02-162025-02-17
Civil Twilight Begin06:5006:49
Sunrise07:2007:19
Sunset17:5317:55
Civil Twilight End18:2318:24
Moon Illumination87.26%80.28%
Last Known Eruption
Old Faithful

163d 13h 11m ago

Grand

1y 201d 16h 30m ago

Castle

2y 223d 5h 17m ago

Riverside

2y 223d 7h 14m ago

Daisy

2y 223d 7h 14m ago

Great Fountain

2y 223d 12h 20m ago

Beehive

231d 16h 39m ago

Steamboat

2y 241d 13h 42m ago