Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 7:34:31 PM (PDT) on Saturday, July 15, 2023.
The magnitude 1.2 event occurred 8 km (5 miles) SW of Tamalpais-Homestead Valley, CA.
The hypocentral depth is 6 km ( 3 miles).
|Magnitude||1.2 - duration magnitude (Md)|
|Time||Saturday, July 15, 2023 at 7:34:31 PM (PDT)
Sunday, July 16, 2023 at 2:34:31 (UTC)
Tamalpais-Homestead Valley, CA - 8 km (5 miles) SW (231 degrees)|
Mill Valley, CA - 10 km (6 miles) SW (214 degrees)
Marin City, CA - 10 km (6 miles) WSW (245 degrees)
Bolinas, CA - 11 km (7 miles) SE (142 degrees)
Strawberry, CA - 11 km (7 miles) SW (231 degrees)
|Coordinates||37 deg. 49.9 min. N (37.831N), 122 deg. 36.6 min. W (122.609W)|
|Depth||5.54 km (3.4 miles)|
|Location Quality Parameters||Nst=29, Nph=32, Dmin=10.2 km, Rmss=0.07 sec, Erho=0.39 km, Erzz=0.48 km, Gp=157 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)