​The HRRR (High Resolution Rapid Refresh) is regional weather model for North America made by the National Oceanic and Atmospheric Administration of the US (NOAA). It provides a great forecast for the continental United States, Canada and Mexico based on radars' data — the unique advantage of HRRR. It is assimilated every 15 min over a 1 h period. It gives short-range weather forecasts with pretty good accuracy.