paris cost hurricane irma describe one powerful atlantic storm century see cost least 1.2 billion euros 1.44 billion saint martin saint barthelemy french public reinsurance body say saturday irma wallop cuba northern coast saturday category storm expect hit florida sunday morning threaten massive damage wind flood fourth-largest u.s. state population france caisse centrale de reassurance state-owned reinsurance group say irma would go one damage disasters decades french territory saint barthelemy lie 35 km southeast saint martin whose territory divide france netherlands french interior ministry say saturday 10 people report dead two islands irma see cost billion euros saint martin saint barth