The RUC (Rapid Update Cycle) Model was upgraded today with the Rapid Refresh Model. All of the links and graphics may still contain the acronym RUC but data is from the RAP model. The links and menus will be updated over the next few days to reflect the name change.
Here is a link to more information about the new Rapid Refresh Model.
http://www.nws.noaa.gov/os/notification/tin11-53ruc_rapaae.htm