| Date: | 2021-08-14 |
| Time: | 1353:14 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | 4m09s |
| Standardized Duration: | 4m 9s |
| Time Entered: | 2021-08-14 13:53:40 |
| Time Updated: | 2021-08-14 14:03:24 |
| Time Uploaded: | 2021-08-14 14:03:24 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 1354 | NPS 1401; very large preplay 1352:55 followed by distinct break, therefore not the start |