| Date: | 2021-01-12 |
| Time: | 0858 E |
| Geyser: | Steamboat |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | |
| Time Entered: | 2021-01-12 09:02:35 |
| Time Updated: | 2021-01-12 09:15:52 |
| Time Uploaded: | 2021-01-12 09:17:09 |
| Entrant: | K.Cooper |
| Observer: | YNM and YNR seismographs. |
| Submitted to: | |
| Comments: | Either very late 0858 or very early 0859, I could argue both ways, left as 0858. Hopefully someone can confirm start time in person. |
| https://www.flickr.com/photos/jsjgeology/50829236342 | Norris Museum seismogram showing Steamboat Geyser's 8:58 AM major eruption on 12 January 2021. | |
| https://www.flickr.com/photos/jsjgeology/50830027091 | Tantalus Creek discharge graph showing Steamboat Geyser's 8:58 AM major eruption on 12 January 2021. |