| Earthquake Details | Seismogram Explanation |
|---|
| Location: Off the East Coast of Honshu, Japan | P-wave: 08:05:32 UTC; 2:05:32 AM CDT |
| Date: April 20, 2026 | S-wave: 08:15:59 UTC; 2:15:59 AM CDT |
| Time: 07:53:000 UTC; 2:53:00 AM CDT | The vertical axis is in units of displacement in centimeters. |
| Latitude: 39.95 N | The horizontal axis is in units of time in seconds. |
| Longitude: 143.05 E | The beginning of the file is the origin of the event. |
| Magnitude: 7.4 Mw | This earthquake produced a moderate tsunami |
| Depth: 35.5 km | |
| Distance: 85.09 degrees (~ miles from Milwaukee) | |
