| Date: | 2021-11-15 |
| Time: | 1336 |
| Geyser: | UNNG-GHG-18 |
| Webcam: | Yes |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | ~1m 42s |
| Standardized Duration: | ~1m 42s |
| Time Entered: | 2021-11-16 12:21:42 |
| Time Updated: | 2021-11-16 21:37:22 |
| Time Uploaded: | 2021-11-16 21:37:06 |
| Entrant: | SantaFe108 |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | Decently sure this was a major. Started off strong. At around ~36s the intensity of the eruption appeared to increase like a major, but the video quality was bad and the wind was shifting quite a bit. Eruption also visibly soaked the runoff channel past Marmot Cave. |