Deviating 1nm for every 1000' of altitude that the storm has reached may be a good idea but is not practical and does not happen. If it is a monster give it a wide berth if downwind but 45nm is a bit much. Until you start flying round weather it is hard to give a rule that fits all situations as you will see. Experience dealing with it is the only way to really learn about getting round weather safely and efficiently. There is no problem going left or right, preferable upwind but sometimes you have to find a way through a line and that means upwind of some, downwind of others.