Weather Gone Viral - Season 4

Powerful winds flip a 30 tonne truck, a tornado tears through a school gym, and a gigantic wave drags tourists down a 12-story drop. Watch these heart-stopping moments that strike hard and fast.

In life, everything can change in an instant, and that's never more true than when weather is involved; whether documenting a devastating tornado or intentionally putting oneself in danger, Mother Nature always keeps people on their toes.

Satellites and computer modeling make weather prediction admirably reliable; weather is a complex stew of potent global forces; it can churn itself into an explosive force of terrifying ferocity, one that levels cities and snuffs out lives.

Nature's wrath comes in many forms: torrential, unforgiving rain, a vicious blast of unseen wind, a turbulent, powerful flood; a calm day is worth embracing; nature puts people who aren't careful in their place.

Some weather events are so weird they defy explanation -- even from the most seasoned meteorologists; they're the rarely-seen phenomena that puzzle and capture one's imagination.

Weather emergencies test everyone - first responders, meteorologists, motorists and anyone caught in the path of storms, raging rivers, and mudslides.

Weather has a potent arsenal when it comes to tormenting humankind; how to defy the most powerful forces of nature.

Challenging the weather is a bold move on anyone's part, but Mother Nature is always stronger, and yet, it's human nature to test the limits, whether for sport, for knowledge or as a reaction to a surprise event.