In May I got delayed by a typhoon but the airline put us up in a swanky Manila hotel and I got an extra day and night with my wife. Nice
I like to use the 'weather' tab on Google Earth to monitor the weather over Luzon where we live, it gives you some sort of live indication of where the centre of the typhoon is and direction of travel. I am sure that your airline will be ok, they will only delay if things get bad enough to worry the insurance companies lol
