There is a app for that
People who have smart phones can carry a complete severe weather alert system wherever they go. The American Red Cross has released its Tornado App for smartphones. Besides warning people in the path of a tornado, it can also turn a phone into a survival tool. The app can use the camera flash and a siren to guide rescue workers to trapped storm victims. It can also let friends and family know the cell phone owner is safe. By linking the user with an "I’m safe" button, a person can sending it out to social media, text messages, and email. The free app is available for iPad, iPhone, and Android phones. You can also add other apps including first aid, hurricane, and wildfire alerts.
Click Here to learn more or download the app from American Red Cross