Image date/time (bottom right corner) is recorded in UTC (Universal Time, Coordinated) AKA Zulu time.
It is 6 hours ahead for MDT or 7 hours ahead for MST.
For example 2011/07/02 20:00:00Z is 7/2/2011 1400 MDT or July 2, 2001 2 PM MDT
Base Reflectivity 0.5
Base Reflectivity 1.5
Composit Reflectivity
Composit Reflectivity 248nm
Echo Tops