In light of the recent tragic place crash, the City of Yorba Linda would like to remind residents to stay informed through AlertOC. Along with the County of Orange, the City utilizes AlertOC, a mass notification system designed to keep Orange County residents and businesses informed of important information during emergency events. By registering with AlertOC, time-sensitive voice messages from the County or City of Yorba Linda can be sent to your home, cell, or business phone. Alerts can also be sent by text message to cell phones, email accounts, and hearing impaired devices. Registration with AlertOC can be completed online. Residents who have previously registered are encouraged to log in to their account to confirm their contact information is still current and cell phone numbers are listed.