I recently discovered and signed up to The Early Warning Network, which is an Australian weather alert system that operates over SMS. Since the storm I had often thought to myself that weather warnings need to come to my mobile phone, not over the radio or TV. I usually don't have either of those devices on, but my phone is always with me. If I'd had an SMS warning about that storm, I might have gone back and closed the windows. Next time, I will have that warning.
Mokalus of Borg
PS - It's a free service based on the Bureau of Meteorology weather warnings.
PPS - And given all that, I don't see why you wouldn't sign up.