Don’t be in the Dark – Sign-up/Update for Emergency Alerts Havre de GraceDon’t be in the Dark – Sign-up/Update for Emergency Alerts Of the 6,000+ people signed up to receive Havre de Grace emergency alerts, only 35%-41% are successfully delivered. If you have changed your contact information since signing up for emergency alerts, you will need to update your information. If you never signed up for emergency alerts, but would like to be notified of road closures, water main breaks, severe weather, etc. you may register online. Click below to sign up or to confirm that the City has your correct contact information. You may also sign up to receive alerts from Harford County and other Harford County municipalities. https://harfordcounty.bbcportal.com/