| Date: | 2020-11-20 |
| Time: | 1012 E |
| Geyser: | Steamboat |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | |
| Time Entered: | 2020-11-20 10:22:59 |
| Time Updated: | 2020-11-20 10:51:22 |
| Time Uploaded: | 2020-11-20 10:51:23 |
| Entrant: | K.Cooper |
| Observer: | YNM Seismograph and YNR seismograph. |
| Submitted to: | |
| Comments: |
| https://www.flickr.com/photos/jsjgeology/50626566967 | Norris Museum seismogram showing Steamboat Geyser's 10:12 AM major eruption on 20 November 2020. | |
| https://www.flickr.com/photos/jsjgeology/50626642142 | Tantalus Creek discharge graph showing Steamboat Geyser's 10:12 AM major eruption on 20 November 2020. |