This page provide information of how to be notified about emergencies in which an alert is possible.
Homeland Security Advisory System (U.S. Dept. of Homeland Security). Terrorism alert scale. Emergency Alert System (Federal Communications Commission) Sucesor to the Emergency Broadcast System (EBS). Emergency Digital Information Service (EDIS).(State of California). Has email alert system one can subscribe to. Update LA Offical Los Angeles City emergency information.
West Coast & Alaska Tsunami Warning Center Global Incident Map California Independent System Operator (Cal ISO)