Preserving. . .
| Geyser: | Event Non-Geyser Related |
| Date/Time: | 2021-08-11 @ 1200 |
| Entrant: | JSJ |
| Observer: | |
| Time Entered: | 2021-08-11 15:16:34 |
| Time Uploaded: | 2021-08-11 15:16:34 |
| Submitted to: | |
| Note: | Shock waves from a magnitude 7.1 earthquake in the Philippines arrived at Yellowstone's seismic network. Good surface waves signal between 1230 and 1300 at some stations. |