| Date: | 2021-07-17 |
| Time: | 1031:01 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | ≥4m09s |
| Time Entered: | 2021-07-17 10:32:16 |
| Time Updated: | 2021-07-17 10:38:14 |
| Time Uploaded: | 2021-07-17 10:38:15 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 1027 | NPS 1026 |