I heard a rumour that when they were testing the dynamic weather system, they put in all the enviromentally correct parameters for the South East of England and it rained every single day for the entire period of the campaign, thus negating any possiblity of actually flying.
Also, as the weather conditions for every single day of the Battle of Britain is readily availiable having a dynamic weather system would be rewriting history and spoil any chances of the virtual pilots getting sun tans as they waited for the scramble to be sounded!
What they didn't factor into the weather model was that the Summer of 1940 was unseasonally warm and that their model was infact completely correct.
Cheers!
