Learn more about KnowDisaster at : https://github.com/MadhavShroff/KnowDisaster SMS API for KnowDisaster allows users to sign up for and recieve SMS alerts with disaster relief information If and when a disaster strikes near their location. They can also sign friends onto the service, right through sms.
Register yourself at https://knowdisasterapp.azurewebsites.com, with location and phone number. Use the same website to update location. You will recieve a confirmation SMS.
Note: Currently Only works for users in India.