Magnitude 5.3 - OFFSHORE BAJA CALIFORNIA, MEXICO
2004 June 15 22:28:48 UTC

Preliminary Earthquake Report
California Integrated Seismic Net
USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR

A moderate earthquake occurred at 22:28:48 (UTC) on Tuesday, June 15, 2004. The magnitude 5.3 event has been located OFFSHORE BAJA CALIFORNIA, MEXICO. The hypocentral depth was poorly constrained. (This event has been reviewed by a seismologist.)

Magnitude 5.3 Date-Time Tuesday, June 15, 2004 at 22:28:48 (UTC) = Coordinated Universal Time Tuesday, June 15, 2004 at 3:28:48 PM = local time at epicenter Location 32.329°N, 117.918°W Depth 10 km (6.2 miles) (poorly constrained) Region OFFSHORE BAJA CALIFORNIA, MEXICO Distances 80 km (50 miles) WSW (241°) from Coronado, CA 80 km (50 miles) WSW (250°) from Imperial Beach, CA 83 km (52 miles) W (270°) from Rosarito, Baja California, Mexico 86 km (54 miles) W (259°) from Tijuana, Baja California, Mexico 87 km (54 miles) WSW (255°) from Tijuana, Baja California, Mexico Location Uncertainty horizontal +/- 4.8 km (3.0 miles); depth +/- 31.6 km (19.6 miles) Parameters Nst=027, Nph=027, Dmin=169 km, Rmss=0.4 sec, Gp= 68°, M-type=local magnitude (ML), Version=P Source California Integrated Seismic Net USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR Event ID ci14065544

Waveforms Location Maps: NEIC Maps Topo map centered at earthquake (This link takes you offsite. Not all regions have topo maps available.) 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. ShakeMap shaking intensity maps Berkeley moment tensor solution Historical Moment Tensor Solutions Seismic Hazard Map Historical Seismicity Theoretical P-Wave Travel Times Earthquake Information for CALIFORNIA Archive of newsworthy events

News Links 5.2 Earthquake Strikes Baja Crews check rails, roads and rides across county

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The official magnitude for this earthquake is indicated at the top of this page. This was the best available estimate of the earthquake's size, at the time that this page was created. Other magnitudes associated with web pages linked from here are those determined at various times following the earthquake with different types of seismic data. Although, given the data used, they are legitimate estimates of magnitude, they are not considered the official magnitude.

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