| Date: | 2021-07-06 |
| Time: | 0545 |
| Geyser: | Event Non-Geyser Related |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2021-07-06 06:13:18 |
| Time Uploaded: | 2021-07-06 06:13:18 |
| Entrant: | JSJ |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | Shock waves from a magnitude 4.1 earthquake that hit east-central Montana arrived at Yellowstone's seismic network. See: https://earthquake.usgs.gov/earthquakes/eventpage/us7000ej2y/executive |