1984 Morgan Hill earthquake
|Date||24 April 1984|
|Depth||8 kilometers (5.0 mi)|
|Countries or regions||United States
The 1984 Morgan Hill Earthquake (also Halls Valley Earthquake) was a magnitude 6.2 earthquake that occurred on April 24, 1984 at 1:15 p.m. local time, in the south San Francisco Bay Area, California. The epicenter of the quake was located near Mount Hamilton in the Diablo Range of the California Coast Ranges, although nearby communities, including Morgan Hill, sustained serious damage. Damages from the earthquake totaled US$7 million, not taking into account damages to high-tech industrial facilities.
The earthquake occurred along the Calaveras Fault, with the epicenter 16 kilometers (9.9 mi) northeast of San Jose, and at a depth of 8 km (5.0 mi). The outline of aftershocks show that the rupture propagated southeast over a 25 km (16 mi) section of the fault, as far as San Martin.
The earthquake was reported to be felt over an area of 120,000 square kilometers (46,000 sq mi) and caused over $7 million in damages. Morgan Hill was the worst affected, with a number of mobile homes sliding off foundations, and moderate damage to several masonry buildings in the city. The communities of San Jose, San Martin and Coyote were some areas that received minor damage from the earthquake. In Santa Clara County, over 550 buildings were reported to have received at least minor damage.
See also 
- "The Morgan Hill Earthquake of 1984". Earthquakes in Your Backyard - And Tsunamis. Archived from the original on 2009-06-01. Retrieved 2009-05-29.
- Toppozada, Tousson R. "Morgan Hill Earthquake of April 1984". California Division of Mines and Geology. Archived from the original on 2009-06-01. Retrieved 2009-05-29.
- "Remembering the 1984 Morgan Hill Earthquake". West Coast Earthquakes. Archived from the original on 2009-06-01. Retrieved 2009-05-29.