| Date: | 2018-05-20 |
| Time: | 1216 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | >3m51s |
| Standardized Duration: | >3m 51s |
| Time Entered: | 2018-05-20 12:16:45 |
| Time Updated: | 2018-05-20 12:20:30 |
| Time Uploaded: | 2019-05-13 21:42:28 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 1207 | NPS 1204 |