But after the blowback that followed the Ridgecrest quakes July 4 and 5, officials agreed to lower the mark. By the end of July, the app will send alerts for local quakes with a magnitude of at least 4.5 and for any quake that results in "weak" shaking locally despite officials' concern that too many warnings could lead to complacency.

Source: Los Angeles Times July 15, 2019 13:04 UTC