J.K. NakataCarol MeyerH. G. WilshireJohn C. TinsleyW.S. Updergrove
04:15 PM (PDT) a 7.1 magnitude earthquake severely shook the greater San Francisco and Monterey Bay areas.The epicenter was located approximately 14.5 km (9 mi) northeast of Santa Cruz and 96.6 km (60 mi) south-southeast of San Francisco near Loma Prieta Peak in the Santa Cruz Mountains.The hypocenter was at a depth of 13.5 km (8.4 mi) along the boundary of the Pacific and the North American plates.
R. B. ShephardPeter WoodJ. B. BerrillN. R. GillonPhilip NorthA. K. PerryD. P. Bent
David K. KeeferMichael W. MansonGary GriggsNathaniel G. PlantRobert L. SchusterGerald F. WieczorekDavid G. HopeEdwin L. HarpJordan NolanGerald E. WeberWilliam F. ColeDale R. MarcumPatrick O. ShiresBruce R. Clark