Petra Nemcova is looking back on the life-changing tsunami that she survived 20 years ago. The supermodel, now 45, clung to a palm tree in Thailand for eight hours to stay alive.

Petra Nemcova recalled the "split seconds" before her Thailand bungalow was hit by a tsunami that left her with a shattered pelvis. The supermodel survived by holding onto a tree.

There was no warning before a tsunami consumed Petra Nemcova's vacation bungalow in Thailand on Dec. 26, 2004, where she was staying with then-boyfriend Simon Atlee ...

There was no warning before a tsunami consumed Petra Nemcova's vacation bungalow in Thailand on Dec. 26, 2004, where she was staying with then-boyfriend Simon Atlee ...

Model Petra Nemcova opens up on 'GMA' about surviving the 2004 tsunami that killed 5,000 in Thailand. 'It's always difficult to go back in that moment.' Petra Nemcova recalls deadly Thailand ...

Model Petra Nemcova survived the Asian tsunami that killed over 280,000 people, including her fiancé. Her ordeal inspired the creation of her childrens' charity, which has helped thousands ...

In 2004, supermodel Petra Nemcova was on a dream vacation in Thailand with her boyfriend, fashion photographer Simon Atlee, when a tsunami tore through their bungalow.. Atlee was swept away in the ...

Supermodel Petra Nemcova, who miraculously survived a deadly tsunami in 2004 by clinging to a tree with a crushed pelvis, opened up about the horror she faced two decades ago.

Petra Nemcova Says Being Mom to Son Bodhi, 5, Makes 'Every Day Full of Magic' (Exclusive) Twenty years after losing her boyfriend in the 2004 tsunami, Nemcova found joy again through her global ...

Philanthropist Petra Nemcova on what's next for the Happy Hearts Fund 01:19. She didn't have a choice in what happened that day, she says, but she does now.

Petra Nemcova had never even heard the word “tsunami” until one hit her. Now, the Czech supermodel is calling on the United Nations to help the world better prepare natural disasters.