Sam Spade's San Francisco

U.S. Geological Survey Report

Note: No damage has been reported in the City and County of San Francisco

In the photo: Click to enlarge this USGS Seismogram of this morning's earthquake from the USGS Pinole Ridge Station

Region: SAN FRANCISCO BAY AREA, CALIF.

Geographic coordinates: 37.807N, 122.188W

Magnitude: 4.1 Ml

Depth: 5 km

Date & Time (UTC): 20-Jul-2007 at 4:42 AM PDT

Location with respect to nearby cities: 4 km (2 miles) ENE (69 degrees) of Oakland, CA 4 km (3 miles) ESE (113 degrees) of Piedmont, CA 7 km (4 miles) SW (234 degrees) of Moraga, CA 21 km (13 miles) E (80 degrees) of San Francisco City Hall, CA

Event ID # : NC 40199209

Important Earthquake-related Links:
24-Hour Aftershock Forecast Map
U.S. Geological Survey (USGS) Earthquake News
Berkeley (U.C.) Seismological Lab
Northern California Earthquake Data Center
San Francisco Bay Faultlines
Real Time Seismogram Display
California Integrated Seismic Network
California Governor's Office of Emergency Services (State OES)
San Francisco Office of Emergency Services (SF OES)
San Francisco Neighborhood Emergency Response Team (NERT)
U. S. Coast Guard Station, Alameda
San Francisco Fire Department Community Services Contact Page
San Francisco Fire Department Fire Station Locator
American Red Cross, San Francisco Chapter