Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #0: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 3:36:38 AM (PDT) on Wednesday, July 21, 2021.
The magnitude 2.8 event occurred 54 km (33 miles) WSW of Ferndale, CA.
The hypocentral depth is 19 km (12 miles).


Magnitude 2.8 - local magnitude (Ml)
Time Wednesday, July 21, 2021 at 3:36:38 AM (PDT)
Wednesday, July 21, 2021 at 10:36:38 (UTC)
Distance from Ferndale, CA - 54 km (33 miles) WSW (252 degrees)
Fortuna, CA - 63 km (39 miles) WSW (252 degrees)
Rio Dell, CA - 65 km (40 miles) W (263 degrees)
Humboldt Hill, CA - 66 km (41 miles) WSW (240 degrees)
Hydesville, CA - 67 km (41 miles) WSW (258 degrees)
Coordinates 40 deg. 25.4 min. N (40.423N), 124 deg. 52.0 min. W (124.867W)
Depth 18.91 km (11.8 miles)
Quality Poor
Location Quality Parameters Nst=25, Nph=52, Dmin=44.3 km, Rmss=0.59 sec, Erho=4.9 km, Erzz=11.4 km, Gp=231 degrees
Event ID# nc73596741
Additional Information Map

For more information, see https://earthquake.usgs.gov

[ Index map || Big earthquake list || All earthquake list || Glossary of terms || Top page ]
[ Did you feel it? || ShakeMaps || Relative2Me ]
[ Data Sources ]

Special maps
Long Valley || Los Angeles || San Francisco

Data Sources
US and World - USGS/NEIC = National Earthquake Information Center
Northern California - UCB = University of California, Berkeley
Southern California - Caltech = California Institute of Technology
Nevada - UNR = University of Nevada, Reno
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)