One of the deadliest natural disasters in modern history, the 2004 Indian Ocean tsunami in which 230,000 people perished, will be National Geographic's biggest docuseries of autumn, 'Tsunami: Race Against Time.'

This episode of Big Blend Radio features Barry Hirshorn, the seismologist who, in 2004, was tracking all the data as it trickled in. During the chaos, Hirshorn had to make sense of data so extreme as to be unreal. In 2004, Indian Ocean countries lacked the technology that could warn them, so Hirshorn knew that, based on his data, untold numbers of deaths were happening live. He raced to get the message to the remaining countries oblivious to the imminent calamity.

Premiering November 24, 2024, the series provides a 360-degree view into the heart-stopping events of 2004. It features personal accounts from survivors and scientists who raced against time to understand the catastrophe and warn the world. Told minute-by-minute through harrowing videos of survival – some seen for the first time – the four-part series offers an immersive look at the destructive wave as it surged across 14 countries.

TSUNAMI: RACE AGAINST TIME Premieres Across Two Nights, beginning Nov. 24, 2024 at 9/8c on National Geographic. All Episodes Stream Nov. 25 on Disney+ and Hulu