| Date: | 2018-05-27 |
| Time: | 1915 |
| Geyser: | Steamboat |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | 19 minutes water phase |
| Standardized Duration: | 19m |
| Time Entered: | 2018-05-27 22:07:56 |
| Time Updated: | 2018-05-31 23:05:19 |
| Time Uploaded: | 2019-05-13 21:36:15 |
| Entrant: | Suzanne |
| Observer: | |
| Submitted to: | GeyserTimes for Android |
| Comments: | 1915 was the exact start time, witnessed by over a dozen gazers. Eruption started on the fifth of a series of very strong minors over a period of about 12 to 15 minutes, each minor increasing in volume and height. Observed times for minors 2, 3, and 4 prior to the eruption were at 1906, 1908, and 1912. I did not get an exact time for minor #1 and estimated that it started sometime between 1900 and 1903. |
| https://quake.utah.edu/station/heli2/20180527/YNM_SHZ_WY_01-20180527.png | YNM Seismograph Webicorder |