USGS: Calaveras Array Cherry Flat Reservoir Agency Number: 1696 Structure: Inst Shelter A Latitude: 37.3960 Longitude: -121.7560 Instrument: Ground Level Site Geology: Franciscan Volcanics, Metamorphic Volcanic Rock Owner: United States Geological Survey (external link) References Add all data on this page to the download bin View Map Loma Prieta/Santa Cruz Mountains, California 1989-10-18 00:04:15 UTC Closest dist to fault: 31.0 km Summary page for this earthquake Plot Acceleration Component: Up PGA (cm/s/s): 61.10 PGV (cm/s): 6.90 Add this to bin Component: 270 PGA (cm/s/s): 74.80 PGV (cm/s): -8.60 Add this to bin Component: 360 PGA (cm/s/s): 78.20 PGV (cm/s): 8.70 Add this to bin Return to top Home + Login + Download + About Us + Contact Earthquakes + stations + Search + Map + Advanced Search