| Date: | 2021-07-12 |
| Time: | 1848:14 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | ≥4m31s |
| Time Entered: | 2021-07-12 18:48:46 |
| Time Updated: | 2021-07-12 18:55:33 |
| Time Uploaded: | 2021-07-12 18:55:34 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 1849 | NPS 1846; duration within seconds of or at end |