Response Spectra Station: Mt.St.Helena South Station Owner: Northern Calfornia Seismic Network Station Latitude & Longitude: 38.6565, -122.6144 Earthquake: 2024 Offshore Cape Mendocino, California Earthquak Hypocentral Distance: 281.4 km Processing Info: CGS (Use the back button on your browser to return to the previous page)  Reconfigure Plots: % Damping 0251020 Accleration Units cm/s/s g Max Period (sec) Scale Factor for Data Overlay response spectrum:   None   UBC 1997 Help   Ca   Cv   IBC 2000   or    Ground-motion Help   SDS   SD1   Generic design spectrum Help   Max   Ca   T1   T2   T3  Component: 90 Free field  PGA: 1.80 cm/s/s        standard   Home + Login + Download + About Us + Contact Earthquakes + stations + Search + Map + Advanced Search