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 1:22:08 AM (PDT) on Monday, August 17, 2026.
The magnitude 1.1 event occurred 2 km (1 miles) SE of Concord, CA.
The hypocentral depth is 16 km (10 miles).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Monday, August 17, 2026 at 1:22:08 AM (PDT) Monday, August 17, 2026 at 8:22:08 (UTC) |
| Distance from |
Concord, CA - 2 km (1 miles) SE (131 degrees) Pleasant Hill, CA - 6 km (3 miles) E (80 degrees) Waldon, CA - 6 km (4 miles) NE (56 degrees) Clayton, CA - 6 km (4 miles) WNW (288 degrees) Pacheco, CA - 7 km (5 miles) ESE (114 degrees) |
| Coordinates | 37 deg. 57.4 min. N (37.957N), 121 deg. 59.9 min. W (121.999W) |
| Depth | 15.80 km (9.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=13, Nph=13, Dmin=7.9 km, Rmss=0.10 sec, Erho=0.5 km, Erzz=1.92999995 km, Gp=101 degrees |
| Event ID# | nc75419937 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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