| Date: | 2023-06-23 |
| Time: | 1202 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | ≥4m17s |
| Time Entered: | 2023-06-23 12:10:43 |
| Time Updated: | 2023-06-23 12:10:58 |
| Time Uploaded: | 2023-06-23 12:10:59 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | had large preplay around the time of NPS' prediction of 1146, inducing preplay delay |