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The San Francisco earthquake struck at 5:12 AM on April 18, 1906, with an estima
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April 18

San Francisco Shakes: Earthquake and Fire Devastate the City

The San Francisco earthquake struck at 5:12 AM on April 18, 1906, with an estimated magnitude of 7.9, rupturing the San Andreas Fault for 296 miles. The earthquake itself caused significant damage, but the subsequent fires, burning for three days, destroyed 80% of the city. Broken water mains left firefighters helpless. The Army dynamited buildings to create firebreaks, often starting new fires in the process. An estimated 3,000 people died and 225,000 of the city's 400,000 residents were left homeless. The disaster prompted the creation of modern building codes emphasizing seismic resistance. Ironically, San Francisco was rebuilt so quickly that it hosted the Panama-Pacific International Exposition just nine years later in 1915.

April 18, 1906

120 years ago

Key Figures & Places

What Else Happened on April 18

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