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 3:40:24 AM (PDT) on Tuesday, July 20, 2021.
The magnitude 1.3 event occurred 4 km (2 miles) SE of Hercules, CA.
The hypocentral depth is 9 km ( 6 miles).
|Magnitude||1.3 - duration magnitude (Md)|
|Time||Tuesday, July 20, 2021 at 3:40:24 AM (PDT)
Tuesday, July 20, 2021 at 10:40:24 (UTC)
Hercules, CA - 4 km (2 miles) SE (128 degrees)|
El Sobrante, CA - 4 km (3 miles) ENE (62 degrees)
Pinole, CA - 4 km (3 miles) ESE (105 degrees)
Rodeo, CA - 4 km (3 miles) SSE (164 degrees)
Tara Hills, CA - 6 km (3 miles) E (88 degrees)
|Coordinates||37 deg. 59.7 min. N (37.995N), 122 deg. 15.2 min. W (122.253W)|
|Depth||9.27 km (5.8 miles)|
|Location Quality Parameters||Nst=19, Nph=19, Dmin=3.3 km, Rmss=0.05 sec, Erho=0.24 km, Erzz=0.76 km, Gp=69 degrees|
|Additional Information|| Map
For more information, see https://earthquake.usgs.gov
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)