Magnitude 5.1 - OFFSHORE NORTHERN CALIFORNIA

This webpage is being phased out and is no longer maintained. Please use the new Real-time Earthquake Map instead and update your bookmark. See Quick Tips & User Guide.

2012 July 21 01:52:01 UTC

Earthquake Details

  • This event has been reviewed by a seismologist.
Magnitude5.1
Date-Time
Location40.385°N, 125.528°W
Depth25 km (15.5 miles)
RegionOFFSHORE NORTHERN CALIFORNIA
Distances
  • 106 km (66 miles) W (274°) from Petrolia, CA
  • 109 km (68 miles) W (259°) from Ferndale, CA
  • 118 km (74 miles) WSW (251°) from Humboldt Hill, CA
  • 124 km (77 miles) WSW (249°) from Eureka, CA
  • 395 km (246 miles) NW (318°) from San Francisco City Hall, CA
Location Uncertaintyhorizontal +/- 1.8 km (1.1 miles); depth +/- 15.8 km (9.8 miles)
ParametersNph= 38, Dmin=102 km, Rmss=0.26 sec, Gp=256°,
M-type=regional moment magnitude (Mw), Version=L
Source
Event IDnc71819391
  • Did you feel it? Report shaking and damage at your location. You can also view a map displaying accumulated data from your report and others.

Additional Information