| Date: | 2018-09-08 |
| Time: | 0724 |
| Geyser: | Giant Hot Period |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 5m 50s |
| Standardized Duration: | 5m 50s |
| Time Entered: | 2018-09-08 07:56:20 |
| Time Updated: | 2018-09-08 07:58:38 |
| Time Uploaded: | 2019-05-13 21:38:32 |
| Entrant: | Kyle |
| Observer: | Kyle, Brian G., Karen, Suzanne, hk |
| Submitted to: | GeyserTimes for Android |
| Comments: | strong GHP large ovfl from Mastiff. India covered, Mastiff surges to 4 ft. restart D=3m 09s. some vertical surging in Giant to 1/3-1/2 height of cone |