Unisys Weather

RAP Model Forecasts

RAP Analyses

The Rapid Refresh (RAP) model uses a rapid-refresh version of the WRF model. Therefore, the images generated by the NAM/WRF model can be compared with the images of the RAP model. The RAP model covers North America and is updated every hour. The model has a 13 km horizontal resolution with 50 vertical levels. The grid is projected onto a rotated lat-lon grid, with a 759x567 mass-point domain (Arakawa grid). The model uses 1/12-deg NCEP sea-surface temperatures. The web site images are updated every hour.

RAP 4 Panel Forecasts

These 4 panel charts displays the conditions at 4 forecast times for a particular plot type. The upper left panel is the 1 hour forecast, the upper right is the 3 hour forecast, the lower left is the 5 hour forecast and the lower right is the 7 hour forecast.