The NCEP High-Resolution Window Forecast System (HIRESW) consists of daily runs of the NEMS Non-hydrostatic Multiscale Model on B-grid (NEMS-NMMB) and the NCAR Advanced Research WRF (ARW) at ~3-4 km resolution. Initial conditions are provided by the NCEP Global Forecast System (GFS) for the Alaska, Hawaii, Puerto Rico, and Guam domains. The Rapid Refresh (RAP) analysis initializes the CONUS domain.