A dangerous storm spawns tornadoes across the southern US on Easter Sunday, and flooding in Indonesia leaves residents stranded in high water peril.

Tornadoes ravage towns in Oklahoma, Texas and Louisiana, a snow mobile rider gets lost in the Swedish mountains, and a record-breaking typhoon crashes a wedding in the Philippines.

Cameras focus on the Philippines, where the Taal Volcano violently erupts, blasting ash and debris over nearby towns and villages.

Police officers form a human chain as they attempt the dramatic rescue of a family of four during Tropical Storm Imelda, which unleashed record-breaking floods on Texas.

Bushfires in California destroy communities as a passer-by saves stranded drivers from a flaming freeway, and a Swedish skier records the moment he gets buried by an avalanche.

We hear stories of survival and see what it's like to endure raging wildfires, biblical floods and deadly avalanches. Sometimes these death-defying escapes are down to luck, but often its people fighting back against the force of nature — helped by fearless first responders and heroic good Samaritans, who swoop in just in time. Get ready to experience the most extreme elements on earth! In the Grand Canyon, a massive microburst causes a dangerous deluge of mud and rocks to barrel down on a group of kayakers — leaving them in need of urgent medical assistance. In Iowa, a rare derecho storm — similar to an inland hurricane — is caught on camera by a 14-year-old storm junkie. A snowboarder in Utah is left in agony after an off-piste adventure goes wrong — leaving him to rescue himself from a snowy mountain. In a suburban Californian community, wildfires leave families fleeing for their lives. And in Australia, a category three cyclone barrels into a coastal community.

Firefighters battle through apocalyptic scenes on Australia's Kangaroo Island as it is besieged by deadly bushfires.

In New Zealand, the White Island volcano erupts, with deadly consequences.

In downtown Nashville, Tennessee, a violent tornado rakes through the city and interrupts a live news broadcast. At the Hamma Hamma Falls in the State of Washington, a kayaker races to rescue his friend from a terrifying ordeal above a 60-foot waterfall.

This week we visit New South Wales, Australia, where the worst bushfires in recent history are attacking multiple towns, overwhelming firefighters and trapping tourists at a lakefront caravan park. The Philippines is usually resilient to natural disasters, but a 6.4-magnitude earthquake catches everyone off-guard — including a family who are trapped in a swimming pool. In England, it's a fight for survival, as a group of cavers attempt to rescue their colleague from the flooded section of an active cave. And in Kansas, two tornado chasers intercept a terrifying twister.

In Arkansas, two storm-chasers help warn people that a tornado is barrelling towards them, wreaking havoc on downtown Jonesboro and leaving a trail of destruction. In Idaho, a daredevil adventurer decides to swim beneath a frozen lake — but his helpless girlfriend watches on as the wild stunt goes horribly wrong. A pair of fishermen get caught in chaos when 40mph winds and lightning surround their boat. And in the Italian Alps, scary weather strands a father and his young daughter in their cable car.

A man and his 19-year-old daughter struggle to survive raging fires in Australia.

A mother and her child are forced to swim through shark-infested waters.