Tornado Warning

A teenager boy bonds with his stepfather while battling a series of killer twisters.

A deadly patchwork of destructive cyclones is on an apocalyptic path of convergence at a populated Midwest city center. There, the twisters will merge into one mega tornado that threatens to obliterate the cities for hundreds of miles around.

Liz McAdams is haunted by the memories of a tornado that destroyed her home 25 years ago. Now a professional storm tracker, she and her family are in danger once again as another devastating twister rapidly gains momentum. Caught in the path of destruction, Liz and her estranged husband struggle to save those they love...

Despite scientist Nathan's warnings, his boss continues an experiment meant as publicity for his satellite firm: exploding an asteroid. Instead it splits, and the major piece, the size of Iceland, changes course to earth. It is deflected but so close that it shift our course closer to the sun, causing rapid extreme heating, hopefully only mid-term. Nathan warns his sister, TV journalist Carly, and she her lover, police detective Tom. He brings his unruly daughter Kim, her ex-con lover C.J. and her mother, nurse Bonnie, when Nathan offers a flight to a friend's Arctic weather station. Tom takes charge of a dangerous trip to the airport, as everywhere on earth things catch fire and people fight for water, transport and sheer looting.

Three tornadoes converge to wreak havoc on Chicago, disrupting the power grid and creating the worst super-storm in history: a category 6 twister.