| Magnitude | 4.5 |
| Region | OFFSHORE NORTHERN CALIFORNIA |
| Date time | 2023-03-21 23:18:20.4 UTC |
| Location | 40.550 ; -124.400 |
| Depth | 25 km |
| Distance | 236 km W of Chico, United States / pop: 121,000 / local time: 16:18:20.4 2023-03-21 21 km WSW of Fortuna, United States / pop: 12,000 / local time: 16:18:20.4 2023-03-21 |
All data providers for this event:
GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)Alaska Tsunami Warning Seismic System, West Coast and Alaska Tsunami Warning Center -- Anchorage, United States (AT)
Geophysical Survey of the Russian Academy of Sciences -- Obninsk, Russia (GSRAS)
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)
USGS Northern California Regional Network, USGS-Menlo Park, California -- Menlo Park, United States (NC)
Further information can be found at:
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)