"The faster the CME, the more potentially destructive it can be, so for a worst-case scenario, we now know we have at least 12 hours to take preventative measures," according to Nat Gopalswamy of NASA's Goddard Space Flight Center.
http://www.space.com/scienceastronom...ed_040614.html
12 hours warning. Now, what happens if NASA don't warn any one? will any one else?