Not so sure about this tbh, green and yellow rain are much stronger. I haven't managed to trigger purple rain (
) yet tho
I've not seen a speck of purple either. R08 usually has light blue with a dark blue band in the middle, often straight lines. When it's patterns instead of straight lines patches of green and yellow show up. There's 2 shades of dark blue, regular pattern only does the lighter dark blue for torrential rain
It seems random whether it chooses the straight lines or broken clouds. R08 generates both, the overcast ones are probably more prone to generate straight lines.
@Roggers Cloudless rain is just overcast, sky is all grey. Looks boring but I guess you get a solid blue patch instead of broken up patches that can miss the track. I've had occasions though where R06 didn't generate anything. The one on the bottom right is the first R06 I used in my 12H race, the second time it produced nothing at all. I had the rain alternating with dry for the 9 states starting with R04, S09, R06, S10, R08, S11, R07, S17, R06.
R04 had broken light blue patches with a couple patches of the second blue state.
R06 had the little blob and second time nothing.
R08 had the big band (3rd pic top row)
S11 had some rain with torrential bits (2nd pic bottom row)
R07 had a band with small darker blue band (2nd pic top row)
And the rest of the race it stayed dry.
You can 'program' the weather but it's still a crap shoot what you'll get during the race.
I've had the rain at the wrong time issues when it shows that broken clouds. Raining before a blob hits or not raining when a blob hits. Of course rain does drift in real life, it doesn't land right under the clouds, yet the scale here is in kilometers. (But with rain moving at supersonic speeds, quite possible
)