A map of earthquake faults in part of Southern California is seen as a sample of an earthquake early warning system the state that is under development is displayed on a television monitor in the background, during a news conference Thursday, Sept. 29, 2016, in Rancho Cordova, Gov. Jerry Brown has signed legislation to develop a statewide earthquake early warning system in California, after devoting $10 million to the program in the state budget he signed this year. (AP Photo/Rich Pedroncelli)
8.7-magnitude earthquake off Sumatra
An 8.7-magnitude earthquake strikes Indonesia 434 km southwest of Banda Aceh, Sumatra, Indonesia.