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09/28/2004 M5 Aftershock
California Integrated Seismic Net
USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR
Version #6: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
A moderate earthquake occurred at 11:54:28 AM (PDT) on Thursday, September 30, 2004.
The magnitude 5.0 event occurred 14 km (9 miles) NW of Parkfield, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 5.0 - regional moment magnitude (Mw) |
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| Time | Thursday, September 30, 2004 at 11:54:28 AM (PDT) Thursday, September 30, 2004 at 18:54:28 (UTC) |
| Distance from | Parkfield, CA - 14 km (9 miles) NW (311 degrees) Coalinga, CA - 25 km (15 miles) SW (225 degrees) Bradley, CA - 26 km (16 miles) ENE (59 degrees) San Miguel, CA - 29 km (18 miles) NNE (27 degrees) San Jose City Hall, CA - 193 km (120 miles) SE (141 degrees) |
| Coordinates | 35 deg. 59.0 min. N (35.984N), 120 deg. 33.0 min. W (120.550W) |
| Depth | 10.1 km (6.3 miles) |
| Location Quality | Excellent |
| Location Quality Parameters | Nst=242, Nph=242, Dmin=6 km, Rmss=0.13 sec, Erho=0.2 km, Erzz=0.4 km, Gp=54 degrees |
| Event ID# | nc51149146 |
| Additional Information | map with fault names Topo map centered at earthquake (This link takes you offsite). |
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Northern California Management Center |
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Last modified: Wed Jan 17 18:17:55 PST 2007