| Date: | 2019-08-04 |
| Time: | 1544 |
| Geyser: | Middle Sister |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2019-08-04 17:33:24 |
| Time Uploaded: | 2019-08-04 17:33:24 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | 1 small burst; heavy roiling-small spouting at 1545; blip at 1546. |