Solar storms are a problem.
A big problem. Chances are you have never heard of them at all because unlike the conventional storms that produce rain and thunder, solar storms are remote and distant. It really all depends on where you are and who you are. If you are an astronaut walking on the moon, a solar storm could give you a lethal dose of radiation in a matter of a few minutes. If you were dialing '911' from a cellphone, the solar storm would have prevented your call from going through.