To dream about tornado means that you are in emotional turbulence. Perhaps you feel very confused about some situation in your waking life. Some people who have unhealthy relationships and fighting a lot dream about twister, because it is the part of their lives.
Dream dictionary: waking up from peaceful sleep dream meanings
When you dream of the abortion, then such dream indicates some kind of problems, but only if you are the female. For a man, it is different explanation which signifies minor troubles within his family affair or business. Overall, the abortion signifies the failures you will meet while dealing with various things in your life that are taking the huge part of your waking life.