You should be fine, so as long as you aren't outside in the middle of a plain field, you won't get struck by lightning or something. If you want to check out live lightning to past the time, you can use
this site. (it'll be rather quiet since only strong strikes will be detected as it isn't the same as getting paid lightning data obtained by larger and more sensitive networks.) And assuming the right region,
this site for tracking the storm on radar. Otherwise just use wunderground, since you probably won't have use for most of the other products.
Honestly I'd like some storms that were actually severe in my area, but guess storm season is over here.
EDIT: Found a lightning mapping array site for Oklahoma, which can also be of some use I guess:
http://lightning.nmt.edu/oklma/ That's untrue. Being the tallest object in a large, flat area definitely makes you susceptible to being struck by lightning. However, many people are struck without that being the case.
I also partially implied that he'd be inside, and that alone would greatly reduce chances of being struck by lightning, however obviously not make him invincible from it.