Florida declares state of emergency as Hurricane Irma becomes a 'life-threatening' Category 4 storm with 140mph winds
Read more: Hurricane Irma is now a powerful Category 4 storm | Daily Mail Online
- Hurricane Irma strengthened into a powerful Category 4 storm on Monday
- Florida Governor Rick Scott declared a state of emergency for all 67 counties
- Meteorologists had earlier predicted the storm posed a 'serious threat' to the US
- Irma grew in intensity as it approached the northeastern Caribbean with winds of 140 mph
- It is forecast to begin buffeting the region on Tuesday but it is still unclear what path Irma will take as it inches closer to the US
Read more: Hurricane Irma is now a powerful Category 4 storm | Daily Mail Online