SCEDC Home
Home

== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California



Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 7:47:08 AM (PST) on Thursday, December 6, 2018.
The magnitude 2.1 event occurred 3 km (2 miles) E (94 degrees) of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 2.1 - duration magnitude (Md)
Time Thursday, December 6, 2018 at 7:47:08 AM (PST)
Thursday, December 6, 2018 at 15:47:08 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) E (94 degrees)
Cobb, CA - 5 km (3 miles) S (175 degrees)
Middletown, CA - 9 km (6 miles) WNW (286 degrees)
Hidden Valley Lake, CA - 14 km (9 miles) WSW (255 degrees)
Lower Lake, CA - 18 km (11 miles) SSW (212 degrees)
Coordinates 38 deg. 46.5 min. N (38.775N), 122 deg. 43.1 min. W (122.718W)
Depth 1.99 km (1.2 miles)
Quality Good
Location Quality Parameters Nst=20, Nph=21, Dmin=5.3 km, Rmss=0.08 sec, Erho=0.18 km, Erzz=0.89 km, Gp=64 degrees
Event ID# nc73119601
Additional Information map || waveforms
  

For more information, see http://earthquake.usgs.gov

[ Index map || big earthquake list || all earthquake list || glossary of terms || top page ]
[ Did you feel it? || ShakeMaps || Relative2Me ]
[ Data Sources || Contacts ]

Research Tools
General Earthquake Information
Stations/ Instrumentation
About the Data Center