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
Geyser2024-11-20
No reports yet
Values for Old Faithful Area2024-11-202024-11-21
Civil Twilight Begin06:5506:56
Sunrise07:2707:28
Sunset16:5116:50
Civil Twilight End17:2217:22
Moon Illumination76.72%67.43%
Last Known Eruption
Old Faithful

76d 58m ago

Grand

1y 114d 4h 17m ago

Castle

2y 135d 17h 4m ago

Riverside

2y 135d 19h 1m ago

Daisy

2y 135d 19h 1m ago

Great Fountain

2y 136d 7m ago

Beehive

144d 4h 26m ago

Steamboat

2y 154d 1h 29m ago