Version #3: This report supersedes any earlier reports of this event.
This event has been reviewed by a
seismologist.
A light earthquake occurred at 9:00:15 PM (PDT) on
Friday, September 5, 2008.
The magnitude 4.0 event occurred 3 km (2 miles)
ENE of Alamo, CA.
The hypocentral depth is 16 km (10 miles).
Magnitude | 4.0 - regional moment magnitude (Mw) |
---|---|
Time | Friday, September 5, 2008 at 9:00:15 PM (PDT) Saturday, September 6, 2008 at 4:00:15 (UTC) |
Distance from | Alamo, CA - 3 km (2 miles) ENE (77
degrees) Diablo, CA - 5 km (3 miles) NW (315 degrees) Danville, CA - 6 km (4 miles) NNW (343 degrees) Concord, CA - 11 km (7 miles) S (172 degrees) Oakland, CA - 22 km (14 miles) ENE (69 degrees) |
Coordinates | 37 deg. 51.9 min. N (37.866N), 121 deg. 59.7 min. W (121.996W) |
Depth | 16.2 km (10.1 miles) |
Location Quality | Excellent |
Location Quality Parameters | Nst=250, Nph=250, Dmin=1 km, Rmss=0.14 sec, Erho=0.1 km, Erzz=0.2 km, Gp=46.8 degrees |
Event ID# | nc51207740 |
Additional Information | 2-degree
map Google Earth KML (Requires Google Earth.) ShakeMap shaking intensity maps Did you feel it? NCSN First Motion Mechanism 1 Waveforms Waveforms for ShakeMap Berkeley moment tensor solution Tsunami Information Statement from the WC/ATWC |
For more information, see http://quake.wr.usgs.gov/