MRMS combines radar information into observation-based products. Use the loop to follow recent echo development and motion, checking the displayed valid time and available frames.
Access: MRMS radar is free without signing in.
Go to interactive viewerRead the guideStart with reflectivity, pause on a frame to read its time, and examine other layers where available. Open RRFS separately when you want model forecast guidance.
Radar processing has a delay. Coverage gaps, beam effects and artifacts can occur; reflectivity alone does not establish exact ground rainfall or storm severity.
Check initialization, valid time and units. Use official forecasts and warnings for safety decisions.