| Date: | 2021-04-16 |
| Time: | 1433 E |
| Geyser: | Steamboat |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | |
| Time Entered: | 2021-04-16 14:42:20 |
| Time Updated: | 2021-04-16 14:44:55 |
| Time Uploaded: | 2021-04-16 16:40:03 |
| Entrant: | K.Cooper |
| Observer: | YNM and YNR seismographs. |
| Submitted to: | |
| Comments: |