Acceleration Station: Sierra Madre, CA - Cogswell Dam Station Owner: California Strong Motion Instrumentation Program Station Latitude & Longitude: 34.2450, -117.9640 Earthquake: Sierra Madre 1991-06-28 14:43:54 UTC Hypocentral Distance: 12.6 km (Use the back button on your browser to return to the previous page) Component: 65 Ctr Crest Component: 155 Ctr Crest Component: Up Ctr Crest Component: Up Right Crest Component: 155 Right Crest Component: 65 Right Crest Component: 155 Right Abutment Component: 65 Right Abutment Component: Up Right Abutment Home + Login + Download + About Us + Contact Earthquakes + stations + Search + Map + Advanced Search