| Date: | 2018-12-25 |
| Time: | 2321 E |
| Geyser: | Steamboat |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | |
| Time Entered: | 2018-12-25 23:53:05 |
| Time Updated: | 2018-12-25 23:57:11 |
| Time Uploaded: | 2018-12-25 23:57:11 |
| Entrant: | Polly |
| Observer: | |
| Submitted to: | |
| Comments: | YNM seismograph trace |
| https://www.flickr.com/photos/jsjgeology/32595649188 | Seismogram showing Steamboat Geyser's 11:21 PM-onward major eruption on 25 December 2018. | |
| https://www.flickr.com/photos/jsjgeology/45750890214 | Tantalus Creek discharge graph showing spike from Steamboat Geyser's major eruption near midnight on 25 December 2018. |