The radar was replaced with a WSR-88D NEXRAD system in April 1993 installed near Metro Zoo, near where Hurricane Andrew made landfall. In 1995, the NHC moved into a new hurricane-resistant facility on the campus of Florida International University, capable of withstanding 130 mph (210 km/h) winds. Its name was changed to the Tropical Prediction Center in 1995. After the name change to TPC, the Hurricane Specialists were grouped as a separate NHC unit under the Tropical Prediction Center, separating themselves from the Tropical Analysis and Forecast Branch. On October 1, 2010, the Tropical Prediction Center was renamed the NHC, and the group formerly known as the NHC became known as the Hurricane Specialists Unit (HSU). Tropical cyclone forecasting uses statistical methods based on tropical cyclone climatology, as well as methods of numerical weather prediction where computers use mathematical equations of motion to determine their movement. The World Meteorological Organization continues to create and maintain the annual hurricane naming lists. Naming lists use a six-year rotation, with the deadliest or most infamous storm names retired from the rotation. The current acting director of the National Hurricane Center is Edward Rappaport following the retirement of Richard Knabb on May 15, 2017. Rappaport was succeeded by Kenneth Graham on April 1, 2018. For the fiscal year of 2008, the budget for the NHC was $6.8 million. The NHC staff has 66 members including 12 managers. The NHC is one of nine national centers which compose the National Centers for Environmental Prediction (NCEP). Known as the NHC from 1995 through 2010, the hurricane specialists within the hurricane specialists unit (HSU) are the chief meteorologists that predict the actions of tropical storms. The specialists work rotating eight-hour shifts from May through November, monitoring weather patterns in the Atlantic and Eastern Pacific oceans. Whenever a tropical or subtropical cyclone forms, they issue advisories every six hours until the storm is over. Public advisories are issued more often when the storm expected to be of tropical storm or hurricane intensity threatens land. The specialists coordinate with officials in each country likely to be affected. They forecast and recommend watches and warnings. During the hurricane season, the HSU routinely issues their Tropical Weather Outlook product, which identifies areas of concern within the tropics which could develop into tropical cyclones. If systems occur outside the defined hurricane season, the HSU issues special Tropical Weather Outlooks. Backup responsibility for their northeast Pacific area resides at the Central Pacific Hurricane Center (CPHC), and vice versa if CPHC were to have communication issues.