| Date: | 2021-07-10 |
| Time: | 1537:12 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | N/A |
| Duration: | 3m26s |
| Standardized Duration: | 3m 26s |
| Time Entered: | 2021-07-10 15:37:41 |
| Time Updated: | 2021-07-10 15:43:30 |
| Time Uploaded: | 2021-07-10 15:43:26 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 1524 | NPS 1521; medium |