Make sure you are signed up with BTX Alert, the city’s mass notification system if you want to receive alerts for tornado warnings, severe thunderstorm warnings, chemical emergencies, a state emergency declared by the governor, a national emergency declared by the president, or other emergencies as directed by the mayor, city management, or coordinator of emergency management. With BTX Alert, you control how you receive messages. Messages can be sent by cell phone, landline, email, text message, and more, but you must register that information by opting in. This service is free to the public. Sign up for BTX Alert now.