Recent Earthquakes in California and
Nevada
== PRELIMINARY EARTHQUAKE REPORT ==California Integrated Seismic Net
USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR
Version #3: This report supersedes any earlier reports of this event.
This event has been reviewed by a
seismologist.
A light earthquake occurred at 4:42:22 AM (PDT) on
Friday, July 20, 2007.
The magnitude 4.2 event occurred 4 km (2 miles) ENE of
Oakland, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 4.2 - regional moment magnitude (Mw) |
|---|---|
| Time | Friday, July 20, 2007 at 4:42:22 AM (PDT) Friday, July 20, 2007 at 11:42:22 (UTC) |
| Distance from | Oakland, CA - 4 km (2 miles) ENE (69
degrees) Piedmont, CA - 4 km (3 miles) ESE (113 degrees) Moraga, CA - 7 km (4 miles) SW (234 degrees) Alameda, CA - 8 km (5 miles) NE (51 degrees) |
| Coordinates | 37 deg. 48.4 min. N (37.807N), 122 deg. 11.3 min. W (122.188W) |
| Depth | 5.8 km (3.6 miles) |
| Location Quality | Excellent |
| Location Quality Parameters | Nst=226, Nph=226, Dmin=3 km, Rmss=0.12 sec, Erho=0.1 km, Erzz=0.3 km, Gp=32.4 degrees |
| Event ID# | nc40199209 |
| Additional Information | 2-degree
map Google Earth KML (Requires Google Earth.) Topo map centered at earthquake (This link takes you offsite.) ShakeMap shaking intensity maps Did you feel it? NCSN First Motion Mechanism 1 Waveforms Waveforms for ShakeMap Berkeley moment tensor solution |
For more information, see http://quake.wr.usgs.gov/
[ Data Sources || Contacts ]