Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California


Version #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 4:40:36 AM (PDT) on Monday, April 5, 2021.
The magnitude 0.5 event occurred 7 km (4 miles) NNE (27 degrees) of Lake Henshaw, CA.
The hypocentral depth is 13 km ( 8 miles).


Magnitude 0.5 - local magnitude (Ml)
Time Monday, April 5, 2021 at 4:40:36 AM (PDT)
Monday, April 5, 2021 at 11:40:36 (UTC)
Distance from Lake Henshaw, CA - 7 km (4 miles) NNE (27 degrees)
Warner Springs, CA - 9 km (6 miles) W (280 degrees)
Palomar Observatory, CA - 14 km (9 miles) ESE (118 degrees)
Aguanga, CA - 21 km (13 miles) SE (143 degrees)
Julian, CA - 27 km (17 miles) NNW (334 degrees)
Coordinates 33 deg. 17.8 min. N (33.296N), 116 deg. 43.8 min. W (116.731W)
Depth 12.62 km (7.8 miles)
Quality Excellent
Location Quality Parameters Nst=15, Nph=21, Dmin=7.2 km, Rmss=0.09 sec, Erho=0.29 km, Erzz=0.47 km, Gp=75 degrees
Event ID# ci39838904
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)