Hurricane Irma caused $36 billion to $53 billion in flood and wind damage to homes in Florida, Georgia, Alabama, North Carolina, and South Carolina, according to just-released estimates by CoreLogic, which provides risk data to major insurance companies.Just over half of that estimate—$20 to $30 billion—was due to flood damage and was not insured. The big uninsured flood losses are a stark reminder of the need for all homeowners to periodically check and update their homeowners insurance to make