OK, do you want to know more about them? If not, stop reading and go to some other blog. If you do, just read on. . .
CMEs are quite fast. They travel out into space from the sun at about 2000 miles per second, that is 7.2 million miles per hour. I bet you can't outrun them, even in a really fast car or jet or rocket. They can also contain ten billion tons of mass. Imaging being punched in the face with that much mass.
Of course, if we do take a direct hit, the part of the world closer to the poles will be affected the most. Canada and northern US, England, Europe, etc will get the strongest affects. But, even though this is Halloween, make sure you treat all those ghosts and goblins with a lots of real sweet candy and have a great day, you hear?