No one seems to mention the option of asking for 20 degrees either side of track to pass a cumulus of larger proportions??? Also my friend was talking only yesterday of a rule of thumb for calculating the height of clouds in your path, but he is on his way to Orlando for a 2 moth break away from aviation!!! Soon as i have comms with him i will let you in on the secret. Aparently he was within 200' of the line training pilots figures and he was using a texas instrument £9.99 special!!
But seriously, why not ask for a routing round the cloud, especially if it is lighting up like a crimbo tree on free electric
