| Date: | 2018-08-12 |
| Time: | 0934 |
| Geyser: | Giant Hot Period |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 2m15s |
| Standardized Duration: | 2m 15s |
| Time Entered: | 2018-08-12 09:45:52 |
| Time Uploaded: | 2019-05-13 21:40:45 |
| Entrant: | Tara |
| Observer: | Jim, Tara, Tom |
| Submitted to: | GeyserTimes for Android |
| Comments: | SW Vents preceded Feather by about 2 minutes. Feather's Satellite and Rusr on about 25s after Feather but Mastiff had only one push of overflow and then dropped. No other vents active. |