The Thunder Storm representation seems a bit excessive - I've been testing different aspects it's weather generation and if you are in a mid size GA aircraft (PC-12)flying into a T-storm.... well forget about it. There's no warning, no clouds, and nothing on radar... Then all of a sudden you right in the middle of a cell... no chance to turn away, it just slams you to the ground. Outside of that poorly represented aspect.. The CLOUDS are AWESOME looking and a much better looking sky. Just watch out for the sneaky t-storms that slam you to the ground.