 In 1959, the Project was moved to Miami and collocated with the Miami hurricane forecast office. The Department of Commerce leased two DC-6 aircraft and received a B-57 jet from the Air Force so that NHRP could continue to carry out airborne experiments on hurricanes. The combination of research project, forecast center, and aircraft facility was dubbed the "National Hurricane Center" (NHC). During the 1960s, while NHRP continued to carry out research flights, the Project also began to create computer models of hurricane circulation, formulated a statistical track program (NHC-64), wrote a manual on hurricane forecasting, and evaluated the accuracy of track forecasts. Starting with Hurricane Esther (1961), NHRP was heavily involved with Project Stormfury, the U. S. Government's experiment in hurricane modification. Late in 1964, the Project was renamed the National Hurricane Research Laboratory in recognition of it becoming a permanent institution within the Weather Bureau. This presaged the creation of the Environmental Research Laboratories the next year.
