| Date: | 2020-08-20 |
| Time: | 0300 |
| Geyser: | Steamboat |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | |
| Time Entered: | 2020-08-20 03:34:28 |
| Time Updated: | 2020-08-20 03:36:44 |
| Time Uploaded: | 2020-08-20 04:57:14 |
| Entrant: | cb |
| Observer: | cb |
| Submitted to: | GeyserTimes for Android |
| Comments: | Heard it at the trailer and drove over to confirm. |
| https://www.flickr.com/photos/jsjgeology/50247259623 | Norris Museum seismogram showing Steamboat Geyser's 3:00 AM major eruption on 20 August 2020. | |
| https://www.flickr.com/photos/jsjgeology/50248192197 | Tantalus Creek discharge graph showing Steamboat Geyser's 3:00 AM major eruption on 20 August 2020. |