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 minor earthquake occurred at 0:01:57 AM (PDT) on Sunday, October 18, 2020.
The magnitude 3.4 event occurred 19 km (12 miles) SSW of Rio Dell, CA.
The hypocentral depth is 29 km (18 miles).



Magnitude 3.4 - local magnitude (Ml)
Time Sunday, October 18, 2020 at 0:01:57 AM (PDT)
Sunday, October 18, 2020 at 7:01:57 (UTC)
Distance from Rio Dell, CA - 19 km (12 miles) SSW (207 degrees)
Hydesville, CA - 24 km (15 miles) SSW (203 degrees)
Ferndale, CA - 26 km (16 miles) S (170 degrees)
Fortuna, CA - 28 km (18 miles) S (189 degrees)
Redway, CA - 41 km (26 miles) NW (308 degrees)
Coordinates 40 deg. 20.8 min. N (40.347N), 124 deg. 12.6 min. W (124.209W)
Depth 28.51 km (17.7 miles)
Quality Fair
Location Quality Parameters Nst=19, Nph=63, Dmin=8.3 km, Rmss=0.39 sec, Erho=3.4 km, Erzz=7.8 km, Gp=103 degrees
Event ID# nc73472226
Additional Information map || waveforms
  

For more information, see https://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