M(area) = 5.8 -  Toppozada, T. R. and D. Branum (2002) California M >= 5.5 earthquakes, history and areas damaged, in Lee, W. H., Kanamori, H. and Jennings, P., International Handbook of Earthquake and Engineering Seismology, International Association of Seismology and Physics of the Earth's Interior.

M(intensity) = 5.6 - Bakun, W. H. (1999). Seismic activity of the San Francisco Bay region, Bull. Seism. Soc. Am. 89, 764-784