| Date: | 2015-05-15 |
| Time: | 1257 |
| Geyser: | Tardy |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | ~2 minutes |
| Standardized Duration: | ~2m |
| Time Entered: | 2015-05-15 22:52:05 |
| Time Uploaded: | 2019-05-13 21:35:49 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | |
| Comments: | Eruption from late 1257 to late 1259. |