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
Geyser2024-10-17
No reports yet
Values for Old Faithful Area2024-10-172024-10-18
Civil Twilight Begin07:1207:13
Sunrise07:4207:43
Sunset18:3418:33
Civil Twilight End19:0419:02
Moon Illumination99.92%99.07%
Last Known Eruption
Old Faithful

42d 3h 46m ago

Grand

1y 80d 7h 5m ago

Castle

2y 101d 19h 52m ago

Riverside

2y 101d 21h 49m ago

Daisy

2y 101d 21h 49m ago

Great Fountain

2y 102d 2h 55m ago

Beehive

110d 7h 14m ago

Steamboat

2y 120d 4h 17m ago