Version #3: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
A moderate earthquake occurred at 8:04:54 PM (PDT) on
Tuesday, October 30, 2007.
The magnitude 5.6 event occurred 8 km (5 miles) NNE of Alum Rock, CA.
The hypocentral depth is 9 km ( 6 miles).
|Magnitude||5.6 - regional moment magnitude (Mw)|
|Time||Tuesday, October 30, 2007 at 8:04:54 PM (PDT)|
Wednesday, October 31, 2007 at 3:04:54 (UTC)
|Distance from||Alum Rock, CA - 8 km (5 miles) NNE (31
Milpitas, CA - 11 km (7 miles) E (91 degrees)
San Jose City Hall, CA - 15 km (9 miles) NE (45 degrees)
Sunol-Midtown, CA - 17 km (10 miles) NE (45 degrees)
|Coordinates||37 deg. 25.9 min. N (37.432N), 121 deg. 46.5 min. W (121.776W)|
|Depth||9.2 km (5.7 miles)|
|Location Quality Parameters||Nst=250, Nph=250, Dmin=3 km, Rmss=0.07 sec, Erho=0.1 km, Erzz=0.3 km, Gp=32.4 degrees|
Google Earth KML (Requires Google Earth.)
Topo map centered at earthquake (This link takes you offsite.)
Rupture Directivity from Peak Motions
ShakeMap shaking intensity maps
Did you feel it?
NCSN First Motion Mechanism 1
Waveforms for ShakeMap
Berkeley moment tensor solution
Tsunami Information Statement from the WC/ATWC
For more information, see http://quake.wr.usgs.gov/