Early Warning Labs is on the forefront of earthquake early warning.  Our users are getting live alerts now and taking action.

From Wired Magazine:

ON MONDAY NIGHT, residents of the Los Angeles neighborhoods of Westwood, Los Feliz, Silver Lake, and parts of the San Fernando Valley experienced a mild earthquake—a magnitude 3.6. Most people slept through the temblor and no damage was reported.

But a select group of 150 LA residents got a text alert on their mobile phone a full eight seconds before the quake hit at 11:10 pm—enough time for people to drop, cover, and hold on.

Read more:

https://www.wired.com/story/the-united-states-needs-an-earthquake-warning-system-already/