| Date: | 2021-08-16 |
| Time: | 1556:23 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | 4m00s |
| Standardized Duration: | 4m 0s |
| Time Entered: | 2021-08-16 15:56:40 |
| Time Updated: | 2021-08-16 16:02:59 |
| Time Uploaded: | 2021-08-16 16:03:01 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT & NPS 1555 |