Well if you are avoiding TMNTs or want something different, check this movie out
it has a bunch of people in it including Lori from Walking Dead.
Saw it last night. There was no IMAX/3d release as it probably would have been perfect for that format. The last movie I saw that had a tornado in it was in 2004's Day after tomorrow, and of course Twister. I must say this was better than both movies. Although all computer generated, it looked so realistic. With all the tornado footage taken over the years, the fx people got it down to such amazing details when showing the tornados on screen.
Check it out if you can.