The NEXRAD display can be useful, but it NO substitute for onboard radar. If you avoid the "NEXRAD" storms, you are avoiding storms that happened 10-20 minutes ago. Sometimes the "clear" area is where the storm went
@BG47
As for the discussion about radar in cockpits...radars are behind the times not only in the airline industry but also in the corporate world...these aircraft/glass cockpit manufactures should have real time weather overlay like the handheld gps that the civil light aircraft owners use they are excellent at navigating around weather. It’s interesting to see even the Indonesia navy pilots searching for this plane had one on their dash as a back up.