| Date: | 2015-07-09 |
| Time: | 1858 |
| Geyser: | Gemini |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 1m13s |
| Standardized Duration: | 1m 13s |
| Time Entered: | 2015-07-09 22:56:33 |
| Time Updated: | 2015-07-09 22:59:19 |
| Time Uploaded: | 2019-05-13 21:39:10 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | |
| Comments: | Eruption from 1858 + 40s to 1859 + 53s. Fifth eruption of a series of 5 from 1820 to 1859. Crash/drain from a full pool at 1915 + 06s. |