On October 21, 1868, at approximately 7:53 a.m., a powerful earthquake ruptured the Hayward Fault, shaking communities across the San Francisco Bay Area. Estimated at magnitude 6.8–7.0, it became one of the most destructive earthquakes in California history. In Hayward, then a town of about 500 residents, almost every building was wrecked or severely damaged. Across the region, approximately 30 people died.
The destruction was especially severe in Hayward and nearby communities along the fault, including San Leandro. Oakland, with its predominantly wood-frame buildings, suffered less extensive damage. Across the bay, San Francisco recorded five deaths and approximately $350,000 in property losses, measured in 1868 dollars. The disaster highlighted the vulnerability of masonry construction and the dangers of building on unstable, reclaimed ground along the waterfront.
Known as the “Great San Francisco earthquake” until the catastrophe of 1906, the 1868 shock prompted warnings about heavy cornices, weak masonry, and unsafe building sites. Many of those lessons were later forgotten. Today, historical photographs and eyewitness accounts help scientists reconstruct the earthquake’s shaking and understand the threat posed by the Hayward Fault to the modern Bay Area.
Photo Caption:
A House Damaged — The 1868 Hayward Earthquake
An archival photograph shows a damaged house in Hayward, California, following the earthquake of October 21, 1868. The earthquake devastated the small town and became known as the “Great San Francisco earthquake” before the disaster of 1906.
