![]() The magnitude of an earthquake isn’t enough to determine how much death and destruction it will cause. Science & Medicine Why some huge earthquakes cause great destruction while others do little damage The Hayward fault is so dangerous because it runs through some of the most heavily populated parts of the Bay Area, spanning the length of the East Bay from the San Pablo Bay through Berkeley, Oakland, Hayward, Fremont and into Milpitas.įor all the devastation of the 1906 San Francisco earthquake, it was centered off the coast in the Pacific Ocean. ![]() More than 400 fires could ignite, burning the equivalent of 52,000 single-family homes, and a lack of water for firefighters caused by old pipes shattering underground could make matters worse, researchers said. Hundreds more could die from fire following a quake along the 52-mile fault. Geological Survey in 2018 estimates that at least 800 people could be killed and 18,000 more injured in a magnitude 7 earthquake on the Hayward fault centered below Oakland. The San Andreas fault produced the epic 1906 quake that destroyed San Francisco.īut the Hayward fault in the East Bay also poses a major threat, experts say.Ī landmark report by the U.S. When the Big One hits, will Californians be ready for a lack of modern communication connections? Extended periods without essential utilities such as water and gas? Damage to homes? The mental health effects that often follow disaster? But the worst damage was concentrated in relatively small areas and did not halt daily life across all of Southern California.Įxperts have long warned that a significantly larger quake will eventually strike and that the toll will be far greater.Ĭalifornia These are some of the major earthquake risks facing California The last two big earthquakes to strike Los Angeles - the 1971 Sylmar quake and 1994 Northridge quake - caused destruction and loss of life. (The magnitude 6.7 Northridge earthquake, which occurred on a much smaller fault in the San Fernando Valley, was 45 times weaker than the so-called Ft. In Southern California, a magnitude 7.8 quake struck in 1857. The last California seismic event that reached magnitude 7.8 was the great San Francisco earthquake of 1906. The milestone comes seven years after the City Council passed the nation’s most sweeping earthquake safety legislation, requiring that more than 14,000 buildings be retrofitted. hits $1-billion earthquake milestone: 8,000 buildings retrofitted
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