| Date: | 2021-11-12 |
| Time: | 0502 E |
| Geyser: | Steamboat |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | |
| Time Entered: | 2021-11-12 05:31:15 |
| Time Updated: | 2021-11-12 05:32:23 |
| Time Uploaded: | 2021-11-12 05:32:23 |
| Entrant: | Polly |
| Observer: | |
| Submitted to: | GeyserTimes for iOS |
| Comments: | YNM and YNR seismographs |
| https://www.flickr.com/photos/jsjgeology/51674981155 | Norris Museum seismogram showing Steamboat Geyser's 5:02 AM major eruption on 12 November 2021. | |
| https://www.flickr.com/photos/jsjgeology/51674981385 | Norris Junction seismogram showing Steamboat Geyser's 5:02 AM major eruption on 12 November 2021. | |
| https://www.flickr.com/photos/jsjgeology/51675012363 | Tantalus Creek discharge graph showing Steamboat Geyser's 5:02 AM major eruption on 12 November 2021. |