I should note that I didn't take those pictures, just ran across them on weather.com. Mammatus clouds are pretty rare, only seen in super unstable atmospheres (so before and after storms). I've never seen a cloudpunch though, I think we get so much air traffic here that there's no way to isolate that. Really neat though!

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth