| Date: | 1983-08-28 |
| Time: | 1358 |
| Geyser: | Steamboat |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | |
| Time Entered: | 2017-07-21 00:09:18 |
| Time Uploaded: | 2017-10-03 21:33:50 |
| Entrant: | research-mab |
| Observer: | Geo box 8 |
| Submitted to: | |
| Comments: | 11th major eruption of the year at 1358 MDT – an interval of 65 days 18 hours & 33 minutes- Water phase very short – 3 to 4 min- Still plummeting out steam 19 hours later |