When will the next solar storm hit the earth?

With little asteroids, they are so small that we generally cannot see them until they actually hit. The first ever asteroid detected in time was detected in October 2008, and the asteroid did strike the Earth 16 hours later, exploding high in the atmosphere over the Sudan, a nation in Africa. (There were no known casualties.)

As of now, there are no known asteroids that are on a collision course with the Earth.