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Magnitude 3.9 & Swarm near San Ramon, CA

Sunday, November 24, 2002 at 6:54:23 AM (PST)

Magnitude 3.9
Time Sunday, November 24, 2002 at 14:54:23 (UTC)
Sunday, November 24, 2002 at 6:54:23 AM (PST)
Distance from 0 km (0 miles) NNE (25 degrees) of San Ramon, CA
6 km (4 miles) NNW (327 degrees) of Dublin, CA
6 km (4 miles) SSE (160 degrees) of Danville, CA
17 km (11 miles) NE (41 degrees) of Hayward, CA
Coordinates 37 deg. 45.6 min. N (37.760N)
121 deg. 57.0 min. W (121.950W)
Depth 11.2 km (7.0 miles)
Quality Good
Map of current and past earthquake swarms
Map showing the current (red) sequence together with the 1970 (green) & 1976 (blue) Danville sequences and 1990 Alamo (yellow) sequence.

Detailed information on swarm from USGS & Berkeley

Shake Map
Preliminary map of shaking intensity based on measurements by seismic networks. Usually available within 5 minutes after the earthquake.

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.

  Entire waveform for this event
  First arrivals
  More distant stations

Focal Mechanism
  Focal mechanism 1

Preliminary Earthquake Report
USGS, Menlo Park, CA

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