Angelenos received no warning about the temblors from an alert app introduced earlier this year that was marketed as the country's first early warning system for earthquakes. That caused some to ...

Two earthquakes ... and in the center of Chile, with Chilean authorities calling to evacuate the coastal areas due to the risk of a tsunami, as a consequence of confusing alert messages.

The MyShake app — which alerts Californians that an earthquake is about to hit  — surpassed 4 million downloads, Gov. Gavin ...