| Date: | 2021-04-21 |
| Time: | 0958:28 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | ≥3m35s |
| Time Entered: | 2021-04-21 09:59:02 |
| Time Updated: | 2021-04-21 10:08:57 |
| Time Uploaded: | 2021-04-21 10:08:56 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 0956 | NPS 0953 |