Florida is heading into a new storm season with some good news for once. The state-created fund that backs up private insurers in Florida is in the best financial shape it has been in years — maybe the best since it was created in 1993. And new estimates drawn by financial consultants and Wall Street firms suggest that the fund should be able to borrow enough moneyto cover its obligations for the coming hurricane season, which starts June 1. “We’re as healthy as we have ever been,” said Jack Nicholson, executive director of the Florida Hurricane Catastrophe Fund.