Simple one-in-sixty rule. If you are at high level say FL350,tilt the radar down to -1, the waht you see at a 30nm range is half a nm below,that is 3000ft below you. Work like magic. Try tilt the radar all the way down to -8 or -9 then "walk" it upwardwards and note what shown on every 1 degree up. This way you can paint a very clear picture of shape of the cell ahead and work together with the freezing level,wha-la! The storm is naked!!!!