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The probability of a serious earthquake on various faults has been estimated in the 2008 Uniform California Earthquake Rupture Forecast. According to the United States Geological Survey, Southern California experiences nearly 10,000 earthquakes every year. [3] Details on specific faults can be found in the USGS Quaternary Fault and Fold Database.
Following a series of earthquakes on nearby minor faults in late July 2019, the Garlock Fault was observed moving about 2 cm (0.8 in) [6] between July and October accompanied by numerous minor earthquakes, a state known as fault creep, and producing a bulge in land observed by satellite radar images. [6] [7] [8]
The recurrence interval for a series of large earthquakes starting in 1899 (including the 5.9 1937 Terwilliger Valley earthquake) was 18, 5, 14, 5, 12, 14, and 19 years, yet there has not been a strong earthquake for 37 years (since the 1987 Superstition Hills and Elmore Ranch sequence).
Northern California was rocked by a 7.0 magnitude earthquake late Thursday morning.. After the tremor struck at 10:45 a.m., just over 60 miles to the west-southwest of Humboldt County’s Ferndale ...
The National Weather Service said that the tsunami warning that extended along 500 miles (800 km) of the California and Oregon coasts was called off about 90 minutes after the earthquake struck at ...
Large earthquakes also occurred near the junction in northern California in previous Decembers, according to the geological survey. There were two, a 6.1 and 6.0, near Petrolia in 2021 and a 6.4 ...
Since the 1960s, when it was known as the California Division of Mines and Geology, CGS has produced many maps that depict landslide features and potential slope-failure areas. CGS products have included geologic maps and reports for land-use planning, landslide hazard identification maps, watershed maps, and earthquake-triggered landslide-zone ...
Residents clean up in the Van Nuys neighborhood following the 1994 Northridge earthquake in Los Angeles on January 17, 1994. - Vinnie Zuffante/Getty Images