Simon King tells Newsround what's next for Hurricane Matthew
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Where is Hurricane Matthew heading next?

5 October 2016 Last updated at 14:23 BST

Hurricane Matthew has swept north across the Caribbean, bringing with it heavy rain and strong winds of 145mph.

The storm has devastated areas of Haiti and the Dominican Republic, passing on towards Cuba and onwards to North America.

So why do hurricanes form and where is Matthew predicted to move to next?

BBC weather presenter Simon King can explain.