Complex sentence: However, with several insurers on the island, the actual damage total was likely much higher; in a report to the World Meteorological Organization, the Bermuda Weather Service speculated that all insurance claims from Fay totaled "tens of millions of dollars".
Split into simpler sentences: However, with several insurers on the island, the actual damage total was likely much higher. Indeed, in a report to the World Meteorological Organization, the Bermuda Weather Service speculated that all insurance claims totaled "tens of millions of dollars".