Aircraft radar show precipitation rates, is essence where it is raining harder or conversely, less so. The radar doesn't give any indication of where or when lightning will strike....there is no real way other than a bit of meteorological knowledge and the application of common sense and experience to avoid lightning.
I've been flying an aircraft 40nm's from an active storm cell in clear air, and still been struck by lightning.
Last edited by haughtney1; 21st July 2007 at 21:40.
Reason: Lightening....and for any other pedants out there