Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 10:03:48 AM (PDT) on Tuesday, August 18, 2026.
The magnitude 1.0 event (a probable quarry explosion) occurred 9 km (5 miles) N of Big Bear City, CA.
The hypocentral depth is -2 km (-1 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Tuesday, August 18, 2026 at 10:03:48 AM (PDT) Tuesday, August 18, 2026 at 17:03:48 (UTC) |
| Distance from |
Big Bear City, CA - 9 km (5 miles) N (355 degrees) Big Bear Lake, CA - 12 km (7 miles) NNE (27 degrees) Lucerne Valley, CA - 16 km (10 miles) SE (138 degrees) Running Springs, CA - 28 km (17 miles) ENE (58 degrees) Lake Arrowhead, CA - 32 km (20 miles) ENE (72 degrees) |
| Coordinates | 34 deg. 20.3 min. N (34.338N), 116 deg. 51.2 min. W (116.853W) |
| Depth | -1.55 km (-1.00 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=17, Nph=18, Dmin=10.4 km, Rmss=0.17 sec, Erho=0.56 km, Erzz=31.61 km, Gp=106 degrees |
| Event ID# | ci41529376 |
| 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)
