The US property and casualty market is likely to post strong second quarter earnings over the next few weeks.New-York based investment bank Keefe, Bruyette & Woods (KBW) Inc is reported as telling Business Insurance magazine that negligible losses and rising prices across most lines of business have made for strong financial results for the second quarter of 2012.The report said KBW expects particularly robust numbers from commercial lines insurers because most losses incurred due to hailstorms, wildfires and tornadoes during the second quarter likely will impact personal lines insurers the most.KBW said the lack of large catastrophe losses would also buoy the Bermuda-based reinsurance market. Weak investment returns were highlighted as a mitigating factor likely to partially offset the good underwriting returns for insurers and reinsurers.