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 10:28:27 PM (PDT) on Saturday, August 8, 2026.
The magnitude 1.1 event occurred 1 km (1 miles) SSW of Blackhawk, CA.
The hypocentral depth is 1 km ( 1 mile).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Saturday, August 8, 2026 at 10:28:27 PM (PDT) Sunday, August 9, 2026 at 5:28:27 (UTC) |
| Distance from |
Blackhawk, CA - 1 km (1 miles) SSW (196 degrees) Diablo, CA - 5 km (3 miles) SE (125 degrees) San Ramon, CA - 7 km (4 miles) ENE (60 degrees) Danville, CA - 8 km (5 miles) E (100 degrees) Alamo, CA - 12 km (7 miles) ESE (113 degrees) |
| Coordinates | 37 deg. 48.6 min. N (37.810N), 121 deg. 54.7 min. W (121.912W) |
| Depth | 1.24 km (0.80 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=3.1 km, Rmss=0.06 sec, Erho=0.31 km, Erzz=8.52000046 km, Gp=118 degrees |
| Event ID# | nc75414472 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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