RRFS guidance shows a model’s predicted evolution of reflectivity and other weather fields. It is useful for exploring possible timing and structure, separately from observed MRMS radar.
Access: RRFS is free without signing in.
Go to interactive viewerRead the guideCheck the run and forecast hour, choose a weather product, then step or play through the available hours. Read overlay labels and compare forecasts with observations at matching times.
The existing source is labeled experimental RRFS-A. Forecast storm placement and timing can be wrong; simulated reflectivity and lightning are not observations.
Check initialization, valid time and units. Use official forecasts and warnings for safety decisions.