Earthquake Information
Fault Name Index
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San Jose Fault
TYPE OF FAULTING: left-lateral strike-slip; minor reverse component possible
LENGTH: about 18 km
NEARBY COMMUNITIES: Claremont, La Verne, Pomona
LAST SIGNIFICANT QUAKE: Feb. 28, 1990; ML5.4; No surface rupture found
MOST RECENT SURFACE RUPTURE: Late Quaternary
SLIP RATE: between 0.2 and 2.0 mm/yr
INTERVAL BETWEEN SURFACE RUPTURES: unknown
PROBABLE MAGNITUDES: ML6.0 - 6.5
OTHER NOTES: The San Jose fault dips steeply to the north.
This fault is featured on the following maps:
Mojave Fault Map
Southern Fault Map
Los Angeles Fault Map
