| Date: | 2015-05-15 |
| Time: | 1656 |
| Geyser: | Grand |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 11m31s |
| Standardized Duration: | 11m 31s |
| Grand Code: | D0/T1Q |
| Time Entered: | 2015-05-15 17:20:47 |
| Time Updated: | 2015-05-15 17:21:09 |
| Time Uploaded: | 2019-05-13 21:48:21 |
| Entrant: | JimS |
| Observer: | |
| Submitted to: | GeyserTimes for Android |
| Comments: | grand had a big bubble several minutes before the eruption and dropped. it then recovered and started shortly after turban started. |