On Oct. 17, 1989, the Loma Prieta earthquake struck Northern California, causing widespread damage and loss. The National Geographic Society highlights its impact on infrastructure and the region’s seismic awareness.
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The Great 1906 San Francisco Earthquake, documented by USGS, struck with a magnitude of 7.9, devastating the city and sparking widespread fires. It remains one of the most catastrophic natural disasters in U.S. history.