== PRELIMINARY EARTHQUAKE REPORT ==
California Integrated Seismic Net
USGS/
Caltech/
CGS/
UCB/
UCSD/
UNR
Version #2: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
A microearthquake occurred at 8:31:00 AM (PDT) on Monday, May 4, 2009.
The magnitude 1.1 event occurred 4 km (3 miles) N of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).
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Magnitude |
1.1 - duration magnitude (Md) |
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Time |
Monday, May 4, 2009 at 8:31:00 AM (PDT)
Monday, May 4, 2009 at 15:31:00 (UTC)
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Distance from |
The Geysers, CA - 4 km (3 miles) N (5 degrees)
Cobb, CA - 7 km (4 miles) W (269 degrees)
Anderson Springs, CA - 12 km (7 miles) NW (305 degrees)
Santa Rosa, CA - 44 km (27 miles) N (349 degrees)
Sacramento, CA - 120 km (74 miles) WNW (285 degrees)
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Coordinates |
38 deg. 50.1 min. N (38.834N), 122 deg. 48.1 min. W (122.802W) |
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Depth |
2.1 km (1.3 miles) |
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Location Quality |
Excellent |
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Location Quality Parameters |
Nst= 31, Nph= 31, Dmin=1 km, Rmss=0.06 sec, Erho=0.2 km, Erzz=0.2 km, Gp=82.8 degrees
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Event ID# |
nc51220996 |
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Additional Information |
map with fault names
Google Earth KML (Requires Google Earth.)
Waveforms
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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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