The Night the Bridge Fell Down (1980)

An outbreak of avian flu mutates into a virus that becomes transmittable from human to human.

Mitch Buchannon, believed to have died in a boating accident survived and only has amnesia, he has been recovering in a Los Angeles hospital. His new fiancée, Allison Ford, resembles his old lover, Lt. Stephanie Holden who died years ago.

Charlie Price, a former scientist turned science fiction author, starts living one of his novels when the Federal Science Foundation's weather experiments escape control and turn disastrous.

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...

A showdown decades in the making brings the Donovan family legacy full circle. As the events that made Ray who he is today finally come to light, the Donovans find themselves drawn back to Boston to face the past. Each of them struggles to overcome their violent upbringing, but destiny dies hard, and only their fierce love for each other keeps them in the fight.

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.

When his aging mob boss is whacked, Charlie Swift, a loyal friend and hired gun, will stop at nothing to destroy the upcoming crew that took him out.

Yellowstone is a park, but it's also the deadliest volcano on Earth. Beneath it, a sleeping 'dragon' is stirring. When an earthquake opens a crack for magma to seep through, other warning signs of an eruption start popping up, but they are ignored or dismissed as 'minor'. But when they learn an eruption will happen, panic breaks out through people of the USA and the world.

Twin sisters secretly swap places on their thirtieth birthday. The harmless prank becomes a nightmare when one of them is murdered.

An emotionally unavailable flight attendant meets a potential love interest and later finds out that her "perfect guy" has ulterior motives. As the clock ticks down on New Year's Eve, she must fight to keep her murdered ex-boyfriend's secrets or find herself dead.