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 minor earthquake occurred at 6:39:53 PM (PDT) on Thursday, September 4, 2003.
The magnitude 3.9 event occurred 5 km (3 miles) SE of Berkeley, CA.
The hypocentral depth is 12 km ( 8 miles).
| Magnitude | 3.9 - regional moment magnitude (Mw) |
|---|---|
| Time | Thursday, September 4, 2003 at 6:39:53 PM (PDT) Friday, September 5, 2003 at 1:39:53 (UTC) |
| Distance from | Berkeley, CA - 5 km (3 miles) SE (124 degrees) Orinda, CA - 5 km (3 miles) SW (228 degrees) Oakland, CA - 6 km (4 miles) NE (43 degrees) San Francisco City Hall, CA - 19 km (12 miles) ENE (66 degrees) |
| Coordinates | 37 deg. 50.7 min. N (37.845N), 122 deg. 13.3 min. W (122.222W) |
| Depth | 12.4 km (7.7 miles) |
| Location Quality | Excellent |
| Location Quality Parameters | Nst= 84, Nph= 84, Dmin=4.4 km, Rmss=0.13 sec, Erho=0.2 km, Erzz=0.4 km, Gp=32.4 degrees |
| Event ID# | nc40146204 |