I've edited the tornadoes question for writing clarity and to be more clearly on-topic, without, I think, changing what the OP meant to ask.
Any other reasons not to re-open it?
Dronz, I consider that your edit was a good improvement. I took your edit because the title was straight to the point but I could have either rolled back to KeithS's edit or made my own.
The original question was unclear and misleading. Several people made complains in the comments and downvoted the question because of this. Although I understand it's the user's post, everyone is free to edit it and improvements to the post should be kept as long as they do not change the meaning of the question.
We prefer to have questions that are clear and thus answerable by the community. Misleading question might have answers that are off the track. Bad question tend to get donwovoted and with enough time, there is the risk of deletion by the system. We don't want that if the question has already several answers and a potential to gather a few others. If the question is salvageable, we should try to keep it so the answers have not been for nothing.
From that, I'd say that if you want the revised question answered, you should ask your own. If you were just trying to be helpful, the original asker has pretty clearly indicated that your changes were unhelpful to him.
I actually think that @Vincent was wrong to revert to your changes. If your version is better, then someone else should ask it. The original asker shouldn't have to work with a question with which he disagrees. If the question as asked was bad, it could be closed and then possibly deleted.
Oh, and since the original asker isn't likely to say it, thanks for trying to make the site better. Even if it's not working out as you hoped, others may appreciate your efforts more in the future.