Magnitude 4.0 - SAN FRANCISCO BAY AREA, CALIFORNIA

2011 October 20 21:41:04 UTC

Earthquake Details

  • This event has been reviewed by a seismologist.
Magnitude 4.0
Date-Time
Location 37.856°N, 122.253°W
Depth 8.2 km (5.1 miles)
Region SAN FRANCISCO BAY AREA, CALIFORNIA
Distances
  • 3 km (2 miles) SE (132°) from Berkeley, CA
  • 4 km (2 miles) NE (53°) from Emeryville, CA
  • 4 km (3 miles) NNW (334°) from Piedmont, CA
  • 7 km (4 miles) NNW (342°) from Oakland, CA
Location Uncertainty horizontal +/- 0.1 km (0.1 miles); depth +/- 0.2 km (0.1 miles)
Parameters Nph=258, Dmin=1 km, Rmss=0.17 sec, Gp= 14°,
M-type=regional moment magnitude (Mw), Version=B
Source
Event ID nc71667366
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