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Since the three damaging earthquakes that occurred in the American Midwest and the United States East Coast (1755 Cape Ann, 1811–1812 New Madrid, 1886 Charleston) were well known, it became apparent to settlers that the earthquake hazard was different in California.
The 1994 Northridge earthquake affected the Los Angeles area of California on January 17, 1994, at 04:30:55 PST. The epicenter of the moment magnitude 6.7 ( M w ) blind thrust earthquake was beneath the San Fernando Valley . [ 3 ]
The 1980 Eureka earthquake (also known as the Gorda Basin earthquake) occurred on November 8 at 02:27:34 local time along the northern coastal area of California in the United States. With a moment magnitude of 7.3 and a maximum Mercalli intensity of VII (Very strong), this strike-slip earthquake was the largest to occur in California in 28 years.
1975 Hawaii earthquake [12] November 8, 1980: California 7.2 M w 5 1980 Eureka earthquake [13] May 2, 1983: California: 6.5 M w 0: 1983 Coalinga earthquake: November 16, 1983: Hawaii 6.7 M w 0 1983 Kaoiki earthquake [2] October 28, 1983: Idaho: 7.3 M w 2: 1983 Borah Peak earthquake: April 24, 1984: California: 6.2 M w 0: 1984 Morgan Hill ...
By RYAN GORMAN A massive earthquake that struck the Bay Area on October 17, 1989 forever changed the region, and potentially altered the course of baseball history. The 6.9-magnitude Loma Prieta ...
On October 17, 1989, at 5:04 p.m. local time, the Loma Prieta earthquake occurred at the Central Coast of California. The shock was centered in The Forest of Nisene Marks State Park in Santa Cruz County, approximately 10 mi (16 km) northeast of Santa Cruz on a section of the San Andreas Fault System and was named for the nearby Loma Prieta Peak in the Santa Cruz Mountains.
Earthquake locations are taken from the Centennial Catalog [1] and the updated Engdahl, van der Hilst and Buland earthquake catalog, [2] which is complete to December 2005. From January 2006, earthquake locations are from the United States Geological Survey 's Preliminary Determination of Epicenters (PDE) [ 3 ] monthly listing.
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 ...