On Fri, 22 Oct 2004 15:37:18 GMT, Matt Young
wrote:

A question about something that I guess I just didn't get enough info on
during my instrument training. What exactly are you looking for when
looking at a radar image. Are you trying to avoid all returns? Is an
area of just green ok? Any other things in particular to look for?

I fly a PA28-180 equipped with WxWorx Nexrad. My experience has been:

light green = little/no rain (might be virga)
dk green = solid rain, but still not too heavy, certainly ok for IFR
flight
yellow = strong rain. Strong enough that I will only fly through it
if it is a small return.
orange = deviation
red = no way
purple = no way

I have not flown through orange, red, or purple intensities, and do
not intend to do so.

-Nathan