Fun for Friday

As I come up out of the basement [Why do we have all of this crap???] to post the handy dandy brain bender courtesy of the discount MENSA calendar.

Ready to play?

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1) Take a word that means "to rupture" and change one letter to find a word that means "austere."

2) Take a word that means "to mount" and change one letter to find the word for a weather area.

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Alrighty then, you know what to do. The answers will be found later in the comments. See you then!