Alert Hamilton County and Smart 911Hamilton County EMHSA encourages residents to have multiple ways of receiving alerts and warnings. Alert Hamilton County (Alert HC) is a mass notification system used to notify residents about emergencies and other important information throughout Hamilton County. When registering for Alert HC, users can also create a Smart911 profile, allowing first responders to have quicker access to important information in case of an emergency. Sign up for alerts: www.Smart911.com