A mid-April windstorm with drenching rains caused an estimated $56 million of insured property damage in Connecticut, part of the storm’s total $1.225 billion of claims in 18 states and Washington, D.C., an industry group said Tuesday. The Property Claim Services unit of New Jersey-based ISO, which tracks catastrophe claims, reported that U.S. property-casualty insurers are expected to pay $2.175 billon for second-quarter property claims stemming from six catastrophes in 25 states.