== PRELIMINARY EARTHQUAKE REPORT ==
California Integrated Seismic Net
USGS/
Caltech/
CGS/
UCB/
UCSD/
UNR
Version #4: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
A light earthquake occurred at 9:27:10 AM (PST) on Sunday, January 4, 2009.
The magnitude 4.2 event occurred 3 km (2 miles) ESE of The Geysers, CA.
The hypocentral depth is 4 km ( 3 miles).
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Magnitude |
4.2 - regional moment magnitude (Mw) |
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Time |
Sunday, January 4, 2009 at 9:27:10 AM (PST)
Sunday, January 4, 2009 at 17:27:10 (UTC)
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Distance from |
The Geysers, CA - 3 km (2 miles) ESE (119 degrees)
Cobb, CA - 7 km (4 miles) SW (216 degrees)
Anderson Springs, CA - 7 km (4 miles) W (278 degrees)
Santa Rosa, CA - 38 km (23 miles) N (351 degrees)
San Francisco City Hall, CA - 116 km (72 miles) NNW (345 degrees)
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Coordinates |
38 deg. 47.0 min. N (38.783N), 122 deg. 46.3 min. W (122.772W) |
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Depth |
4.3 km (2.7 miles) |
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Location Quality |
Excellent |
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Location Quality Parameters |
Nst=179, Nph=179, Dmin=1 km, Rmss=0.1 sec, Erho=0.1 km, Erzz=0.2 km, Gp=54 degrees
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Event ID# |
nc51214595 |
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Additional Information |
map with fault names
Google Earth KML (Requires Google Earth.)
Did you feel it?
ShakeMap shaking intensity maps
NCSN First Motion Mechanism 1
Waveforms
Waveforms for ShakeMap
Berkeley moment tensor solution
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Did you feel it? ||
Shake Map North
For more information, see http://quake.wr.usgs.gov/
|| Contacts
Back to map
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