PrimeWire

You can now watch the entire National Geographic Witness Tornado Swarm movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.

April 2011 was the most violent month of tornados on record, and the deadliest in modern times. The 'super outbreak' of April 26-27 alone involved more than a hundred separate twisters, killing over 300 people and cutting a swath of destruction across the south. Using dozens of amateur and professional sources, Witness tells the story of this once-in-a-century event, as captured by those who lived through it.