When they allow ops during typhoons, some guys complain about being sent to war for the sake of someone else's profits and bonuses, but when they are being overly cautious they get lashed too?
Pick a side, but stick to it...
A planned cancellation of ops can be less damaging than the myriad of ad hoc diversions and last minute flight cancellations entailed by a large storm.
And weather prediction isn't exactly an accurate science.