Thinking. . .
| Geyser: | Event Non-Geyser Related |
| Date/Time From: | 2020-12-01 @ 0929 |
| Date/Time To: | 2020-12-01 @ 0941 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Time Entered: | 2020-12-01 10:45:28 |
| Time Updated: | 2020-12-01 12:46:26 |
| Time Uploaded: | 2020-12-01 12:46:26 |
| Submitted to: | Geysertimes.org |
| Note: | Shock waves from two Alaska-area earthquakes arrived at Yellowstone's seismic network. The first seismic waves from a magnitude 6.4 subduction zone earthquake offshore from Umnak Island arrived at Yellowstone at 0929-0930. The first waves from a magnitude 5.7 quake south of Patton Seamount (= way offshore from southern Alaska) arrived at Yellowstone at 0941. See: https://www.flickr.com/photos/jsjgeology/50669165681 |