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 8:40:00 PM (PST) on
Thursday, March 1, 2007.
The magnitude 4.2 event occurred 2 km (1 miles) NE
of Lafayette, CA.
The hypocentral depth is 17 km (10 miles).
| Magnitude | 4.2 - regional moment magnitude (Mw) |
|---|---|
| Time | Thursday, March 1, 2007 at 8:40:00 PM (PST) Friday, March 2, 2007 at 4:40:00 (UTC) |
| Distance from | Lafayette, CA - 2 km (1 miles) NE (47
degrees) Walnut Creek, CA - 5 km (3 miles) WSW (257 degrees) Pleasant Hill, CA - 6 km (4 miles) SSW (202 degrees) Concord, CA - 10 km (6 miles) SW (225 degrees) San Francisco City Hall, CA - 31 km (20 miles) ENE (63 degrees) |
| Coordinates | 37 deg. 54.1 min. N (37.901N), 122 deg. 5.9 min. W (122.098W) |
| Depth | 16.6 km (10.3 miles) |
| Location Quality | Excellent |
| Location Quality Parameters | Nst=250, Nph=250, Dmin=3 km, Rmss=0.14 sec, Erho=0.1 km, Erzz=0.2 km, Gp=43.2 degrees |
| Event ID# | nc40194055 |
| Additional Information | 2-degree
map 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 ]