| Date: | 2021-09-04 |
| Time: | 2103 |
| Geyser: | East Sentinel |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | 10m |
| Standardized Duration: | 10m |
| Time Entered: | 2021-09-04 21:15:57 |
| Time Updated: | 2023-09-09 16:19:51 |
| Time Uploaded: | 2023-09-09 16:19:52 |
| Entrant: | Graham |
| Observer: | |
| Submitted to: | GeyserTimes for Android |
| Comments: | After normal splashy cycle, pool dropped and went calm 2039. Side vents were steamy and noisy for 7m. Pool stayed calm and did not rise for 10m. 2049 water rose with strong North River side boil this time and then dropped. Side vents steamy and noisy 2056. 2059 water rising. Right side boil, then left joined in and it erupted! |