| Date: | 2017-11-27 |
| Time: | 1339 ns |
| Geyser: | Castle |
| Webcam: | Yes |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | |
| Time Entered: | 2017-11-27 21:06:45 |
| Time Updated: | 2017-11-27 21:08:30 |
| Time Uploaded: | 2017-11-27 21:07:47 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | Time from GOSA playback. Castle off-camera, but unmistakeable eruption steam plume first visible on web camera at 1339. |