PREVIOUS QUAKES IN ORANGE COUNTY

Listed below are some of the notable earthquakes that have been centered in Orange County.

Dec. 17, 1988: A mild earthquake measuring 3.4 on the Richter scale, centered in the Pacific Ocean south of Seal Beach, shook parts of Southern California, but no damage or injuries were reported in Orange County.

Nov. 19, 1988: A moderate earthquake in the Pacific Ocean off Huntington Beach rumbled through Orange and Los Angeles counties, but no damage or injuries were reported here.

Oct. 27, 1969: A quake centered off the coast near Laguna Beach measured 4.3. No injuries. The quake occurred on coastal extensions of the Newport-Inglewood Fault.

Oct. 20, 1961: Nine sharp shocks centered near Huntington Beach cracked plaster, broke windows and damaged merchandise. No injuries were recorded. The magnitude was about 4.3.

March 10, 1933: Four people in Orange County were among the 100 dead in what is known as the Long Beach quake. But the 6.3 quake was actually centered in Orange County at the intersection of Brookhurst Street and Pacific Coast Highway in Huntington Beach, along the Newport-Inglewood Fault.

Dec. 21, 1812: Two major quakes in Southern California, estimated to measure 7 to 7.5 each, caused widespread damage, including destruction of the chapel of Mission San Juan Capistrano; 34 people were killed.

July 28, 1769: Five strong quakes were felt by the Portola expedition between 1 p.m. and 4:30 p.m.. Father Juan Crespi modified the name that had been given to the river they were camped by to Dulcisimo Nombre de Jesus de los Temblores, the River of the Sweetest Name of Jesus of the Earthquakes. The name that stuck, however, was the Santa Ana River.