How can you

... capture the fleeting rain shower on paper? You know, just that slight silvery mist that marks out the distance between you and those trees over there...
... get that iridescent yellow grey just before the thunder strikes? And don't forget about the ever so slight red purple glow in amongst them.
... draw the splash of a rain drop? And the reflections when it bursts.
... follow the line of the water overflowing from the rooftop? And don't forget the sound too: Drip, drop... drip, drop

You cannae really, or can you?

I wonder...