Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 2:01:56 AM (PDT) on Tuesday, April 21, 2026.
The magnitude 1.0 event occurred 3 km (2 miles) NNW of Piedmont, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Tuesday, April 21, 2026 at 2:01:56 AM (PDT) Tuesday, April 21, 2026 at 9:01:56 (UTC) |
| Distance from |
Piedmont, CA - 3 km (2 miles) NNW (347 degrees) Berkeley, CA - 4 km (2 miles) ESE (123 degrees) Emeryville, CA - 5 km (3 miles) ENE (57 degrees) Albany, CA - 6 km (4 miles) SE (126 degrees) Orinda, CA - 6 km (4 miles) WSW (244 degrees) |
| Coordinates | 37 deg. 51.3 min. N (37.854N), 122 deg. 14.4 min. W (122.240W) |
| Depth | 5.24 km (3.30 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=40, Nph=46, Dmin=2.2 km, Rmss=0.06 sec, Erho=0.15 km, Erzz=0.2 km, Gp=37 degrees |
| Event ID# | nc75348992 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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