In the film, tornadoes whip through Los Angeles and New York is buried by a storm surge of Biblical proportions – all in a matter of days. Could an eco-Armageddon really happen so quickly with these effects?

Science:
No. When scientists refer to abrupt changes in the earth's climate, they are generally referring to changes that occur over a 10- to 20-year time horizon, not a week to 10 days. According to the National Research Council, "Greenhouse warming and other human alterations of the earth system may increase the possibility of large, abrupt, and unwelcome regional or global climatic events … Future abrupt changes cannot be predicted with confidence, and climate surprises are to be expected."[5]

Hollywood :
The movie depicts a massive freeze sweeping across Europe and then striking the northern half of the United States , forcing a mass migration to Mexico for survival. Is this how global warming will shake down?

Science:
No. First of all, the ocean's role in the North Atlantic is very important, but it is not the only influence on Europe ’s climate. In addition, weather systems in the Northeastern U.S. are mostly controlled by Canadian air masses, not the North Atlantic . So it is not clear what impact a disturbance in the North Atlantic would have upon the U.S.