If the locals have pulled the pin, there's often a good reason why !![/quote]That's not always a good way to decide to fly or not. Local operators might be quicker to cancel their flights not because of out of limit weather, but because they can solve the resulting problems with rebooking easier if they have a "stable" new, if reduced, schedule. Cancelling flights ahead of time also prevents hugh amounts of waiting and disrupted passengers.
On AMS KLM is ussually the first to cancel a lot of flights proactively when a storm is predicted. That would mean nobody could be flying into AMS anymore if your reasoning holds true 100%