SCEDC Home
Home

== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 7:47:43 AM (PST) on Thursday, December 6, 2018.
The magnitude 1.9 event occurred 23 km (14 miles) NNW of Hayfork, CA.
The hypocentral depth is 27 km (17 miles).



Magnitude 1.9 - duration magnitude (Md)
Time Thursday, December 6, 2018 at 7:47:43 AM (PST)
Thursday, December 6, 2018 at 15:47:43 (UTC)
Distance from Hayfork, CA - 23 km (14 miles) NNW (328 degrees)
Weaverville, CA - 32 km (20 miles) W (270 degrees)
Willow Creek, CA - 35 km (22 miles) SE (132 degrees)
Lewiston, CA - 44 km (27 miles) W (273 degrees)
Blue Lake, CA - 58 km (36 miles) ESE (107 degrees)
Coordinates 40 deg. 43.7 min. N (40.728N), 123 deg. 19.5 min. W (123.325W)
Depth 27.09 km (16.8 miles)
Quality Excellent
Location Quality Parameters Nst=12, Nph=15, Dmin=11.7 km, Rmss=0.1 sec, Erho=0.6 km, Erzz=0.71 km, Gp=75 degrees
Event ID# nc73119606
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