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 is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 2:47:12 AM (PST) on Sunday, February 21, 2021.
The magnitude 0.4 event occurred 3 km (2 miles) NNW of The Geysers, CA.
The hypocentral depth is 0.33 km (0.2 miles).


Magnitude 0.4 - duration magnitude (Md)
Time Sunday, February 21, 2021 at 2:47:12 AM (PST)
Sunday, February 21, 2021 at 10:47:12 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) NNW (335 degrees)
Cobb, CA - 5 km (3 miles) WSW (241 degrees)
Middletown, CA - 15 km (9 miles) WNW (292 degrees)
Lower Lake, CA - 18 km (11 miles) SW (229 degrees)
Hidden Valley Lake, CA - 18 km (11 miles) W (268 degrees)
Coordinates 38 deg. 48.1 min. N (38.802N), 122 deg. 46.3 min. W (122.771W)
Depth 0.33 km (0.2 miles)
Quality Excellent
Location Quality Parameters Nst=13, Nph=13, Dmin=1.0 km, Rmss=0.04 sec, Erho=0.26 km, Erzz=0.52 km, Gp=77 degrees
Event ID# nc73525901
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)