Early Warning System Sounded Ahead Of California Quake

Early Warning System Sounded Ahead Of California Quake
(Undated) -- An early warning system for earthquakes is still in development, but it showed some great results in yesterday's earthquake. It gave scientists at UC Berkley an advance warning of about ten seconds. When the system goes online across the state it's expected that some people could receive an early warning alert nearly a full minute before the earthquake actually hits.