The magnitude 4.4 quake — centered near Highland Park on Monday — came with an early warning from California’s quake alert system. It was not immediately clear how many people got the alert.

Monday's magnitude 5.2 temblor marked another success for California's earthquake early warning system, with users in some areas saying they received alerts on their phones before they felt shaking.

How earthquake early warning systems work Earthquake early warning systems have long been implemented in quake-prone countries like Mexico and Japan, with California becoming the first state in ...

An earthquake early detection system has been activated in British Columbia to provide the public with a few seconds of warning ahead of a potentially harmful tremor. Federal Energy and ...

The federal government announced Thursday the Earthquake Early Warning (EEW) system is now operational in the province. Using a network of sensors, the EWW will detect earthquakes with a ...

(Robert de Groot / U.S. Geological Survey) Monday's magnitude 5.2 temblor marked another success for California's earthquake early warning system, with users in some areas saying they received ...