One of the things I noticed about this movie is that they don't really focus on the tornado aspect of the Sharknado. In the opening scene, the plane is not really affected by a giant funnel of 200-300 mph winds, just flying sharks. Then, you would think that the tornadoes would actually destroy buildings like they do in real life, but instead, they are just basically transporting sharks. If 3 tornadoes hit New York, even if they did last forever like they do in these movies, they would destroy many buildings instead of just decapitating the Statue of Liberty. Also, if those 3 tornadoes then combined to form a super-tornado, and it would leave no Empire State Building left to blow up. They just disregard the "nado" part of the Sharknado until they talk about destroying the anomaly.