== 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 8:00:42 PM (PDT) on Thursday, May 7, 2009.
The magnitude 1.8 event occurred 17 km (10 miles) SSE of Willow Creek, CA.
The hypocentral depth is 27 km (17 miles).
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Magnitude |
1.8 - duration magnitude (Md) |
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Time |
Thursday, May 7, 2009 at 8:00:42 PM (PDT)
Friday, May 8, 2009 at 3:00:42 (UTC)
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Distance from |
Willow Creek, CA - 17 km (10 miles) SSE (164 degrees)
Blue Lake, CA - 33 km (20 miles) ESE (114 degrees)
Arcata, CA - 40 km (25 miles) ESE (108 degrees)
Eureka, CA - 45 km (28 miles) E (94 degrees)
Sacramento, CA - 307 km (191 miles) NW (324 degrees)
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Coordinates |
40 deg. 45.6 min. N (40.760N), 123 deg. 38.1 min. W (123.635W) |
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Depth |
27.3 km (17.0 miles) |
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Location Quality |
Fair |
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Location Quality Parameters |
Nst= 6, Nph= 6, Dmin=27 km, Rmss=0.04 sec, Erho=1.3 km, Erzz=2 km, Gp=169.2 degrees
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Event ID# |
nc71218056 |
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Additional Information |
map with fault names
Google Earth KML (Requires Google Earth.)
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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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