HIRESW- High Resolution Window – The HiresWindow is a dual-core modeling system run at ~3 km horizontal spacing and without parameterized convection. There are three versions: the WRF-ARW, WRF-ARWMEM2, and the FV3 (Finite Volume Cubed)

The two main dynamical cores are the Advanced Research Weather Research and Forecasting (WRF-ARW) and a limited area configuration of the Finite Volume Cubed Sphere (FV3).

The primary WRF-ARW runs for the continental US use the Rapid Refresh (RAP) for initial conditions, and the Global Forecast System (GFS) for lateral boundary conditions.

The FV3 runs are initialized by interpolation of GFS model output to generate initial and lateral boundary conditions.

The HiresWindow ARW runs forecast out to 48 hours, while the HiresWindow-FV3 extends out to 60 hours. For the continental US, are run twice daily, at 00z and 12z.