<div class="at-above-post addthis tool" data-url="http://www.metro.us/california-earthquake-puts-early-warning-system-to-the-test/"></div>SACRAMENTO, Calif. (AP) As sensors picked up the first signs of a strong earthquake jolting the Northern California coast, an alert was blasted to 3 million smartphone users telling them to “drop, cover, hold on.” It was hailed as the biggest test yet of the warning system since its public launch. But the people […]<! AddThis Advanced Settings above via filter on get the excerpt ><! AddThis Advanced Settings below via filter on get the excerpt ><! AddThis Advanced Settings generic via filter on get the excerpt ><! AddThis Share Buttons above via filter on get the excerpt ><! AddThis Share Buttons below via filter on get the excerpt ><div class="at-below-post addthis tool" data-url="http://www.metro.us/california-earthquake-puts-early-warning-system-
California earthquake puts early warning system to the test wfmj.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from wfmj.com Daily Mail and Mail on Sunday newspapers.
California earthquake puts early warning system to the test kesq.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from kesq.com Daily Mail and Mail on Sunday newspapers.