For a 5.3 quake near the Channel Islands, beta-testers in Downtown LA had 10+ seconds notice
From Curbed:
Beta-testers of the app have been able to experience how well the technology works over the last few months. Today, when the app issued an alert about a 5.3 earthquake epicentered near the Channel Islands, people near Downtown LA had about more than 10 seconds notice before shaking started.
