This amazing supercell has persisted since just after 1900 UTC and its now 2330.  Used  Using All Tilts Base Data since FSI is not available to us.   The radar base data is still the goto basis for warnings, while algorithm output can increase confidence or alert or provide a “safety net” if storms develop in areas you might not be monitoring or while you are busy issuing warnings.  Can you see the NOAA seagull signature?  MrSnow/Shasta