How much internet does HTC sense weather updates use?

Im thinking of getting a htc with sense on it like the sensation, with a contract that offers 500mb of internet. But i was wondering how much internet does the htc weather update app thingy use and things like using gps and google maps use? Will 500 mb be enough? I wont be downloading music or wathing utube etc of of my mobile internet jus emails, websites etc ?


thanks|||its enough the weather app takes less than 10 MB the plan will be enough for light usage|||it depends on how much you use the web and downloading music.