The earth has been around in its current state for 100's of millions of years and I am sure it has seen much worse from the Sun. For you to take "Worst storms in 30 years" as a serious threat is laughable. By saying that, that are basically saying it has been even worse if you go back more than 30 years, and we seem to have survived that.

Aside from a Gamma Ray Burst from a nearby HyperNova, I don't think there is much that Earth's atmoshpere can't handle.