At the moment the Met Office is providing forecasts based on computor models
at the moment AND for the foresseable future!
Do you have any evidence at all that the tuned-up models currently in use are actually giving incorrect track and coverage data for the VA?
Or, alternatively, any evidence that 'safe corridors' actually could / have exist(ed) for useable periods of time, in conflict with data from the models.
(...thought not!)